diff --git a/.gitignore b/.gitignore
index b004739b..e161118d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,9 @@ components/*/.output/
 tools/toolchains
 .ccache
 bin
+version.txt
+managed_components/
+dependencies.lock
 
 #ignore Eclipse project files
 .cproject
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 983ee9b1..b67bdf03 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -1,15 +1,19 @@
-# .readthedocs.yaml
-# Read the Docs configuration file
+# Read the Docs configuration file for MkDocs projects
 # See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
 
 # Required
 version: 2
 
+# Set the version of Python and other tools you might need
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.12"
+
 mkdocs:
   configuration: mkdocs.yml
 
-# Optionally set the version of Python and requirements required to build your docs
+# Optionally declare the Python requirements required to build your docs
 python:
-  version: "3.7"
   install:
-    - requirements: docs/requirements.txt
+  - requirements: docs/requirements.txt
\ No newline at end of file
diff --git a/components/base_nodemcu/CMakeLists.txt b/components/base_nodemcu/CMakeLists.txt
index 72072637..50114b1f 100644
--- a/components/base_nodemcu/CMakeLists.txt
+++ b/components/base_nodemcu/CMakeLists.txt
@@ -2,6 +2,6 @@ idf_component_register(
   SRCS "ip_fmt.c" "user_main.c"
   INCLUDE_DIRS "include"
   REQUIRES "lua"
-  PRIV_REQUIRES "nvs_flash" "spiffs"
+  PRIV_REQUIRES "nvs_flash" "spiffs" "esp_netif" "driver"
   LDFRAGMENTS "nodemcu.lf"
 )
diff --git a/components/base_nodemcu/user_main.c b/components/base_nodemcu/user_main.c
index 0735c2a4..8f13d6be 100644
--- a/components/base_nodemcu/user_main.c
+++ b/components/base_nodemcu/user_main.c
@@ -17,8 +17,8 @@
 #include "esp_system.h"
 #include "esp_event.h"
 #include "esp_spiffs.h"
+#include "esp_netif.h"
 #include "nvs_flash.h"
-#include "flash_api.h"
 
 #include "task/task.h"
 #include "sections.h"
@@ -64,7 +64,7 @@ static void relay_default_loop_events(
   if (task_post_medium(relayed_event_task, (intptr_t)&event))
     xSemaphoreTake(relayed_event_handled, portMAX_DELAY);
   else
-    printf("ERROR: failed to forward esp event %s/%d", base, id);
+    printf("ERROR: failed to forward esp event %s/%ld", base, id);
 }
 
 
diff --git a/components/driver_can/CAN.c b/components/driver_can/CAN.c
index ddd6b619..d3ca24ba 100644
--- a/components/driver_can/CAN.c
+++ b/components/driver_can/CAN.c
@@ -32,6 +32,9 @@
 #include "freertos/FreeRTOS.h"
 #include "freertos/queue.h"
 
+#include "soc/gpio_sig_map.h"
+#include "rom/gpio.h"
+
 #include "esp_intr_alloc.h"
 #include "soc/dport_reg.h"
 #include <math.h>
diff --git a/components/driver_can/CMakeLists.txt b/components/driver_can/CMakeLists.txt
index 44bde7b9..35ffaee3 100644
--- a/components/driver_can/CMakeLists.txt
+++ b/components/driver_can/CMakeLists.txt
@@ -3,6 +3,7 @@ if(IDF_TARGET STREQUAL "esp32")
 idf_component_register(
   SRCS "CAN.c"
   INCLUDE_DIRS "include"
+  PRIV_REQUIRES "driver" "esp_rom"
 )
 
 endif()
diff --git a/components/driver_i2c/CMakeLists.txt b/components/driver_i2c/CMakeLists.txt
index 99b83882..64ae54bd 100644
--- a/components/driver_i2c/CMakeLists.txt
+++ b/components/driver_i2c/CMakeLists.txt
@@ -1,5 +1,6 @@
 idf_component_register(
   SRCS "i2c_sw_master.c"
   INCLUDE_DIRS "include"
-  REQUIRES "esp32"
+  REQUIRES "esp_rom"
+  PRIV_REQUIRES "driver"
 )
diff --git a/components/driver_i2c/include/driver/i2c_sw_master.h b/components/driver_i2c/include/driver/i2c_sw_master.h
index ac8b8d30..5cb6d801 100644
--- a/components/driver_i2c/include/driver/i2c_sw_master.h
+++ b/components/driver_i2c/include/driver/i2c_sw_master.h
@@ -1,14 +1,14 @@
 #ifndef __I2C_SW_MASTER_H__
 #define __I2C_SW_MASTER_H__
 
-#include "rom/ets_sys.h"
+#include "esp_rom_sys.h"
 
 #define I2C_NUM_MAX 1
 
 void i2c_sw_master_gpio_init(uint8_t sda, uint8_t scl);
 void i2c_sw_master_init(void);
 
-#define i2c_sw_master_wait ets_delay_us
+#define i2c_sw_master_wait esp_rom_delay_us
 void i2c_sw_master_stop(void);
 void i2c_sw_master_start(void);
 void i2c_sw_master_setAck(uint8_t level);
diff --git a/components/lua/Kconfig b/components/lua/Kconfig
index f41170ef..695101a5 100644
--- a/components/lua/Kconfig
+++ b/components/lua/Kconfig
@@ -2,7 +2,7 @@ menu "Lua configuration"
 
     choice LUA_VERSION
         prompt "Lua version"
-        default LUA_VERSION_51
+        default LUA_VERSION_53
         help
             The version of Lua interpreter to use.
 
diff --git a/components/lua/lua-5.1/lobject.c b/components/lua/lua-5.1/lobject.c
index 39512b8c..2a0b0530 100644
--- a/components/lua/lua-5.1/lobject.c
+++ b/components/lua/lua-5.1/lobject.c
@@ -20,9 +20,7 @@
 #include "lstate.h"
 #include "lstring.h"
 #include "lvm.h"
-#ifndef LUA_CROSS_COMPILER
-#include "flash_api.h"
-#else
+#ifdef LUA_CROSS_COMPILER
 #include <limits.h>
 #endif
 const TValue luaO_nilobject_ = {LUA_TVALUE_NIL};
diff --git a/components/lua/lua-5.3/lnodemcu.c b/components/lua/lua-5.3/lnodemcu.c
index f9cba0f5..7eb70fcd 100644
--- a/components/lua/lua-5.3/lnodemcu.c
+++ b/components/lua/lua-5.3/lnodemcu.c
@@ -177,7 +177,7 @@ static void platform_flash_erase_sector(lu_int32 i) {
   lockFlashWrite();
 }
 
-static void platform_s_flash_write(const void *from, lu_int32 to, lu_int32 len) {
+static void platform_flash_write(const void *from, lu_int32 to, lu_int32 len) {
   lua_assert(to >= LFSbase && to + len < LFSbase + LFS_SIZE);  /* DEBUG */
   unlockFlashWrite();
   memcpy(byteptr(LFSregion) + (to-LFSbase), from, len);
@@ -449,7 +449,7 @@ static const char *readF (lua_State *L, void *ud, size_t *size) {
 static void eraseLFS(LFSflashState *F) {
   lu_int32 i;
 #ifdef LUA_USE_ESP
-  printf("\nErasing LFS from flash addr 0x%06x", F->addrPhys);
+  printf("\nErasing LFS from flash addr 0x%06lx", F->addrPhys);
 #endif
   unlockFlashWrite();
   for (i = 0; i < F->size; i += FLASH_PAGE_SIZE) {
@@ -464,7 +464,7 @@ static void eraseLFS(LFSflashState *F) {
     platform_flash_erase_sector(s);
   }
 #ifdef LUA_USE_ESP
-  printf(" to 0x%06x\n", F->addrPhys + F->size-1);
+  printf(" to 0x%06lx\n", F->addrPhys + F->size-1);
 #endif
   flush_icache(F);
   lockFlashWrite();
@@ -483,7 +483,7 @@ LUAI_FUNC void luaN_flushFlash(void *vF) {
   lu_int32 size    = F->oNdx * WORDSIZE;
   lua_assert(start + size < F->addrPhys + F->size); /* is write in bounds? */
 //printf("Flush Buf: %6x (%u)\n", F->oNdx, size);                      //DEBUG
-  platform_s_flash_write(F->oBuff, start, size);
+  platform_flash_write(F->oBuff, start, size);
   F->oChunkNdx += F->oNdx;
   F->oNdx = 0;
 }
diff --git a/components/modules/CMakeLists.txt b/components/modules/CMakeLists.txt
index 4b84e26e..9397ca4f 100644
--- a/components/modules/CMakeLists.txt
+++ b/components/modules/CMakeLists.txt
@@ -60,13 +60,14 @@ if(IDF_TARGET STREQUAL "esp32")
 elseif(IDF_TARGET STREQUAL "esp32s2")
   list(APPEND module_srcs
     "dac.c"
-    "rmt.c"
     "pulsecnt.c"
+    "rmt.c"
   )
 elseif(IDF_TARGET STREQUAL "esp32s3")
   list(APPEND module_srcs
-    "rmt.c"
     "pulsecnt.c"
+    "rmt.c"
+    "sdmmc.c"
   )
 elseif(IDF_TARGET STREQUAL "esp32c3")
   list(APPEND module_srcs
@@ -82,9 +83,11 @@ idf_component_register(
     "base_nodemcu"
     "bt"
     "driver_can"
+    "esp_eth"
     "esp_http_client"
-    "fatfs"
     "esp_http_server"
+    "esp_hw_support"
+    "fatfs"
     "libsodium"
     "lua"
     "mbedtls"
@@ -92,10 +95,12 @@ idf_component_register(
     "platform"
     "qrcodegen"
     "sdmmc"
+    "spi_flash"
     "sjson"
     "soc"
     "u8g2"
     "ucg"
+    "vfs"
 )
 
 # Match up all the module source files with their corresponding Kconfig
diff --git a/components/modules/adc.c b/components/modules/adc.c
index 86af249c..33f334a9 100644
--- a/components/modules/adc.c
+++ b/components/modules/adc.c
@@ -54,9 +54,9 @@ static int adc_read( lua_State *L )
 // Lua: read_hall_sensor( )
 static int read_hall_sensor( lua_State *L )
 {
-  int sample = platform_adc_read_hall_sensor( );
-  lua_pushinteger( L, ( lua_Integer ) sample );
-  return 1;
+  const char *msg = "ADC hall sensor no longer supported in IDF, sorry";
+  platform_print_deprecation_note("msg", "IDFv5");
+  return luaL_error(L, msg);
 }
 
 // Module function map
diff --git a/components/modules/can.c b/components/modules/can.c
index 6f748057..3816bafa 100644
--- a/components/modules/can.c
+++ b/components/modules/can.c
@@ -29,7 +29,7 @@ CAN_device_t CAN_cfg = {
 static task_handle_t can_data_task_id;
 static int can_on_received = LUA_NOREF;
 
-static xTaskHandle  xCanTaskHandle = NULL;
+static TaskHandle_t  xCanTaskHandle = NULL;
 
 // LUA
 static void can_data_task( task_param_t param, task_prio_t prio ) {
diff --git a/components/modules/eth.c b/components/modules/eth.c
index 7ccefad5..7aaed53f 100644
--- a/components/modules/eth.c
+++ b/components/modules/eth.c
@@ -14,6 +14,7 @@
 #include "esp_eth.h"
 #include "esp_eth_phy.h"
 #include "driver/gpio.h"
+#include "esp_mac.h"
 
 
 typedef esp_eth_phy_t *(*new_eth_phy_fn)(const eth_phy_config_t *config);
@@ -21,9 +22,8 @@ typedef esp_eth_phy_t *(*new_eth_phy_fn)(const eth_phy_config_t *config);
 typedef enum {
   ETH_PHY_DP83848,
   ETH_PHY_IP101,
-  ETH_PHY_KSZ8041,
-  ETH_PHY_KSZ8081,
-  ETH_PHY_LAN8720,
+  ETH_PHY_KSZ80XX,
+  ETH_PHY_LAN87XX,
   ETH_PHY_RTL8201,
   ETH_PHY_MAX
 } eth_phy_t;
@@ -31,9 +31,8 @@ typedef enum {
 static const new_eth_phy_fn new_eth_phy[] = {
   [ETH_PHY_DP83848] = esp_eth_phy_new_dp83848,
   [ETH_PHY_IP101]   = esp_eth_phy_new_ip101,
-  [ETH_PHY_KSZ8041] = esp_eth_phy_new_ksz8041,
-  [ETH_PHY_KSZ8081] = esp_eth_phy_new_ksz8081,
-  [ETH_PHY_LAN8720] = esp_eth_phy_new_lan8720,
+  [ETH_PHY_KSZ80XX] = esp_eth_phy_new_ksz80xx,
+  [ETH_PHY_LAN87XX] = esp_eth_phy_new_lan87xx,
   [ETH_PHY_RTL8201] = esp_eth_phy_new_rtl8201,
 };
 _Static_assert(sizeof(new_eth_phy) == (sizeof(new_eth_phy[0]) * ETH_PHY_MAX),
@@ -273,13 +272,15 @@ static int leth_init( lua_State *L )
   // temporarily copy option table to top of stack for opt_ functions
   lua_pushvalue( L, stack );
 
-  eth_mac_config_t mac_cfg = ETH_MAC_DEFAULT_CONFIG();
+  eth_esp32_emac_config_t emac_cfg = ETH_ESP32_EMAC_DEFAULT_CONFIG();
 
-  mac_cfg.smi_mdc_gpio_num =
+  emac_cfg.smi_mdc_gpio_num =
     opt_checkint_range( L, "mdc",   -1, GPIO_NUM_0, GPIO_NUM_MAX-1 );
-  mac_cfg.smi_mdio_gpio_num =
+  emac_cfg.smi_mdio_gpio_num =
     opt_checkint_range( L, "mdio",  -1, GPIO_NUM_0, GPIO_NUM_MAX-1 );
 
+  eth_mac_config_t mac_cfg = ETH_MAC_DEFAULT_CONFIG();
+
   eth_phy_config_t phy_cfg = ETH_PHY_DEFAULT_CONFIG();
 
   phy_cfg.phy_addr = opt_checkint_range( L, "addr", -1, -1, 31 );
@@ -290,7 +291,7 @@ static int leth_init( lua_State *L )
 
   lua_settop( L, top );
 
-  esp_eth_mac_t *mac = esp_eth_mac_new_esp32(&mac_cfg);
+  esp_eth_mac_t *mac = esp_eth_mac_new_esp32(&emac_cfg, &mac_cfg);
   esp_eth_phy_t *phy = new_eth_phy[phy_type](&phy_cfg);
 
   esp_eth_config_t eth_cfg = ETH_DEFAULT_CONFIG(mac, phy);
@@ -302,10 +303,6 @@ static int leth_init( lua_State *L )
   esp_netif_config_t netif_cfg = ESP_NETIF_DEFAULT_ETH();
   esp_netif_t *new_eth = esp_netif_new(&netif_cfg);
 
-  err = esp_eth_set_default_handlers(new_eth);
-  if (err != ESP_OK)
-    goto cleanup_netif;
-
   void *glue = esp_eth_new_netif_glue(eth_handle);
   err = esp_netif_attach(new_eth, glue);
   if (err != ESP_OK)
@@ -320,8 +317,6 @@ static int leth_init( lua_State *L )
 
 cleanup_glue:
   esp_eth_del_netif_glue(glue);
-
-cleanup_netif:
   esp_netif_destroy(new_eth);
 
 cleanup_mac_phy:
@@ -354,9 +349,11 @@ LROT_BEGIN(eth, NULL, 0)
 
   LROT_NUMENTRY( PHY_DP83848, ETH_PHY_DP83848 )
   LROT_NUMENTRY( PHY_IP101,   ETH_PHY_IP101 )
-  LROT_NUMENTRY( PHY_KSZ8041, ETH_PHY_KSZ8041 )
-  LROT_NUMENTRY( PHY_KSZ8081, ETH_PHY_KSZ8081 )
-  LROT_NUMENTRY( PHY_LAN8720, ETH_PHY_LAN8720 )
+  LROT_NUMENTRY( PHY_KSZ80XX, ETH_PHY_KSZ80XX )
+  LROT_NUMENTRY( PHY_KSZ8041, ETH_PHY_KSZ80XX ) // deprecated in favour of 80XX
+  LROT_NUMENTRY( PHY_KSZ8081, ETH_PHY_KSZ80XX ) // deprecated in favour of 80XX
+  LROT_NUMENTRY( PHY_LAN87XX, ETH_PHY_LAN87XX )
+  LROT_NUMENTRY( PHY_LAN8720, ETH_PHY_LAN87XX ) // deprecated in favour of 87XX
   LROT_NUMENTRY( PHY_RTL8201, ETH_PHY_RTL8201 )
 LROT_END(eth, NULL, 0)
 
diff --git a/components/modules/heaptrace.c b/components/modules/heaptrace.c
index 8a5966f4..d8f023ee 100644
--- a/components/modules/heaptrace.c
+++ b/components/modules/heaptrace.c
@@ -1,7 +1,10 @@
 #include "module.h"
 #include "lauxlib.h"
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wcpp"
 #include "esp_heap_trace.h"
+#pragma GCC diagnostic pop
 
 static heap_trace_record_t *buffer = NULL;
 
diff --git a/components/modules/i2c_hw_master.c b/components/modules/i2c_hw_master.c
index f0709292..e4055fc4 100644
--- a/components/modules/i2c_hw_master.c
+++ b/components/modules/i2c_hw_master.c
@@ -1,10 +1,11 @@
-
 #include "module.h"
 #include "lauxlib.h"
 #include "lmem.h"
+#include "platform.h"
 #include "driver/i2c.h"
 #include "soc/i2c_reg.h"
 #include "hal/i2c_ll.h"
+#include "rom/gpio.h"
 
 #include "i2c_common.h"
 
@@ -73,7 +74,7 @@ static void vTransferTask( void *pvParameters )
     xQueueReceive( xQueue, job, portMAX_DELAY );
 
     job->err = i2c_master_cmd_begin( job->port, job->cmd,
-                                     job->to_ms > 0 ? job->to_ms / portTICK_RATE_MS : portMAX_DELAY );
+                                     job->to_ms > 0 ? job->to_ms / portTICK_PERIOD_MS : portMAX_DELAY );
 
     task_post_medium( i2c_transfer_task_id, (task_param_t)job );
   }
@@ -202,11 +203,11 @@ int li2c_hw_master_setup( lua_State *L, unsigned id, unsigned sda, unsigned scl,
   memset( &cfg, 0, sizeof( cfg ) );
   cfg.mode = I2C_MODE_MASTER;
 
-  luaL_argcheck( L, GPIO_IS_VALID_OUTPUT_GPIO(sda), 2, "invalid sda pin" );
+  luaL_argcheck( L, platform_gpio_output_exists(sda), 2, "invalid sda pin" );
   cfg.sda_io_num = sda;
   cfg.sda_pullup_en = GPIO_PULLUP_ENABLE;
 
-  luaL_argcheck( L, GPIO_IS_VALID_OUTPUT_GPIO(scl), 3, "invalid scl pin" );
+  luaL_argcheck( L, platform_gpio_output_exists(scl), 3, "invalid scl pin" );
   cfg.scl_io_num = scl;
   cfg.scl_pullup_en = GPIO_PULLUP_ENABLE;
 
@@ -357,7 +358,7 @@ int li2c_hw_master_transfer( lua_State *L )
     // note that i2c_master_cmd_begin() implements mutual exclusive access
     // if it is currently in progress from the transfer task, it will block here until 
     esp_err_t err = i2c_master_cmd_begin( job->port, job->cmd,
-                                          job->to_ms > 0 ? job->to_ms / portTICK_RATE_MS : portMAX_DELAY );
+                                          job->to_ms > 0 ? job->to_ms / portTICK_PERIOD_MS : portMAX_DELAY );
 
     switch (err) {
     case ESP_OK:
diff --git a/components/modules/i2s.c b/components/modules/i2s.c
index 88fab401..cd213c57 100644
--- a/components/modules/i2s.c
+++ b/components/modules/i2s.c
@@ -30,11 +30,11 @@ typedef struct {
 
 typedef struct {
   struct {
-    xTaskHandle taskHandle;
+    TaskHandle_t taskHandle;
     QueueHandle_t queue;
   } tx;
   struct {
-    xTaskHandle taskHandle;
+    TaskHandle_t taskHandle;
     QueueHandle_t queue;
   } rx;
   int cb;
@@ -152,8 +152,8 @@ static int node_i2s_start( lua_State *L )
   //
   i2s_config.channel_format = opt_checkint(L, "channel", I2S_CHANNEL_FMT_RIGHT_LEFT);
   i2s_config.communication_format = opt_checkint(L, "format", I2S_COMM_FORMAT_STAND_I2S);
-  i2s_config.dma_buf_count = opt_checkint_range(L, "buffer_count", 2, 2, 128);
-  i2s_config.dma_buf_len = opt_checkint_range(L, "buffer_len", i2s_config.sample_rate / 100, 8, 1024);
+  i2s_config.dma_desc_num = opt_checkint_range(L, "buffer_count", 2, 2, 128);
+  i2s_config.dma_frame_num = opt_checkint_range(L, "buffer_len", i2s_config.sample_rate / 100, 8, 1024);
   i2s_config.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1;
   //
   pin_config.bck_io_num = opt_checkint(L, "bck_pin", I2S_PIN_NO_CHANGE);
@@ -176,9 +176,9 @@ static int node_i2s_start( lua_State *L )
 
   esp_err_t err;
   if (i2s_config.mode & I2S_MODE_RX) {
-    err = i2s_driver_install(i2s_id, &i2s_config, i2s_config.dma_buf_count, &is->rx.queue);
+    err = i2s_driver_install(i2s_id, &i2s_config, i2s_config.dma_desc_num, &is->rx.queue);
   } else {
-    err = i2s_driver_install(i2s_id, &i2s_config, i2s_config.dma_buf_count, NULL);
+    err = i2s_driver_install(i2s_id, &i2s_config, i2s_config.dma_desc_num, NULL);
   }
   if (err != ESP_OK)
     luaL_error( L, "i2s can not start" );
@@ -265,7 +265,7 @@ static int node_i2s_read( lua_State *L )
   int wait_ms = luaL_optint(L, 3, 0);
   char * data = luaM_malloc( L, bytes );
   size_t read;
-  if (i2s_read(i2s_id, data, bytes, &read, wait_ms / portTICK_RATE_MS) != ESP_OK)
+  if (i2s_read(i2s_id, data, bytes, &read, wait_ms / portTICK_PERIOD_MS) != ESP_OK)
     return luaL_error( L, "I2S driver error" );
 
   lua_pushlstring(L, data, read);
diff --git a/components/modules/idf_component.yml b/components/modules/idf_component.yml
new file mode 100644
index 00000000..ae9c5301
--- /dev/null
+++ b/components/modules/idf_component.yml
@@ -0,0 +1,7 @@
+## IDF Component Manager Manifest File
+dependencies:
+  ## Required IDF version
+  idf:
+    version: ">=5.0.0"
+  # Component dependencies
+  libsodium: "~1.0.20"
diff --git a/components/modules/mqtt.c b/components/modules/mqtt.c
index ecc8aca4..2a456ce6 100644
--- a/components/modules/mqtt.c
+++ b/components/modules/mqtt.c
@@ -50,6 +50,13 @@ typedef struct {
     };
 } mqtt_context_t;
 
+
+typedef struct {
+  mqtt_context_t *ctx;
+  esp_mqtt_event_t event;
+} event_info_t;
+
+
 // event_handler_t is the function signature for all events
 typedef void (*event_handler_t)(lua_State* L, mqtt_context_t* mqtt_context, esp_mqtt_event_handle_t event);
 
@@ -64,10 +71,12 @@ task_handle_t event_handler_task_id = 0;
 
 // event_clone makes a copy of the mqtt event received so we can pass it on
 // and the mqtt library can discard it.
-static esp_mqtt_event_handle_t event_clone(esp_mqtt_event_handle_t ev) {
+static event_info_t *event_clone(esp_mqtt_event_handle_t ev, mqtt_context_t *ctx) {
     // allocate memory for the copy
-    esp_mqtt_event_handle_t ev1 = (esp_mqtt_event_handle_t)malloc(sizeof(esp_mqtt_event_t));
+    event_info_t *clone = (event_info_t *)malloc(sizeof(event_info_t));
     ESP_LOGD(TAG, "event_clone(): event %p, event id %d, msg %d", ev, ev->event_id, ev->msg_id);
+    clone->ctx = ctx;
+    esp_mqtt_event_handle_t ev1 = &clone->event;
 
     // make a shallow copy:
     *ev1 = *ev;
@@ -95,11 +104,12 @@ static esp_mqtt_event_handle_t event_clone(esp_mqtt_event_handle_t ev) {
             ev1->topic = NULL;
         }
     }
-    return ev1;
+    return clone;
 }
 
 // event_free deallocates all the memory associated with a cloned event
-static void event_free(esp_mqtt_event_handle_t ev) {
+static void event_free(event_info_t *clone) {
+    esp_mqtt_event_handle_t ev = &clone->event;
     if (ev->data != NULL) {
         ESP_LOGD(TAG, "event_free():free: event %p, msg %d, data %p", ev, ev->msg_id, ev->data);
         free(ev->data);
@@ -108,7 +118,7 @@ static void event_free(esp_mqtt_event_handle_t ev) {
         ESP_LOGD(TAG, "event_free():free: event %p, msg %d, topic %p", ev, ev->msg_id, ev->topic);
         free(ev->topic);
     }
-    free(ev);
+    free(clone);
 }
 
 // event_connected is run when the mqtt client connected
@@ -235,10 +245,9 @@ static void event_data_received(lua_State* L, mqtt_context_t* mqtt_context, esp_
 // event_task_handler takes a nodemcu task message and dispatches it to the appropriate event_xxx callback above.
 static void event_task_handler(task_param_t param, task_prio_t prio) {
     // extract the event data out of the task param
-    esp_mqtt_event_handle_t event = (esp_mqtt_event_handle_t)param;
-
-    // recover the mqtt context from the event user_context field:
-    mqtt_context_t* mqtt_context = (mqtt_context_t*)event->user_context;
+    event_info_t *info = (event_info_t *)param;
+    esp_mqtt_event_handle_t event = &info->event;
+    mqtt_context_t* mqtt_context = info->ctx;
 
     // Check if this event is about an object that is in the process of garbage collection:
     if (!luaX_valid_ref(mqtt_context->self)) {
@@ -290,14 +299,17 @@ static void event_task_handler(task_param_t param, task_prio_t prio) {
     lua_settop(L, top);  // leave the stack as it was
 
 task_handler_end:
-    event_free(event);  // free the event copy memory
+    event_free(info);  // free the cloned event info
 }
 
 // mqtt_event_handler receives all events from the esp mqtt library and converts them
 // to a task message
-static esp_err_t mqtt_event_handler(esp_mqtt_event_handle_t event) {
-    task_post_medium(event_handler_task_id, (task_param_t)event_clone(event));
-    return ESP_OK;
+static void mqtt_event_handler(void *handler_arg, esp_event_base_t base, int32_t event_id, void *event_data) {
+  (void)base;
+  (void)event_id;
+  event_info_t *clone = event_clone(event_data, handler_arg);
+  if (!task_post_medium(event_handler_task_id, (task_param_t)clone))
+    event_free(clone);
 }
 
 // Lua: on()
@@ -330,7 +342,15 @@ static int mqtt_connect(lua_State* L) {
     memset(&config, 0, sizeof(esp_mqtt_client_config_t));
 
     // process function parameters populating the mqtt config structure
-    config.host = luaL_checkstring(L, 2);
+    const char *host = luaL_checkstring(L, 2);
+    bool is_mqtt_uri = strncmp(host, "mqtt://", 7) == 0;
+    bool is_mqtts_uri = strncmp(host, "mqtts://", 8) == 0;
+    bool is_ws_uri = strncmp(host, "ws://", 5) == 0;
+    bool is_wss_uri = strncmp(host, "wss://", 6) == 0;
+    if (is_mqtt_uri || is_mqtts_uri || is_ws_uri || is_wss_uri)
+      config.broker.address.uri = host;
+    else
+      config.broker.address.hostname = host;
 
     // set defaults:
     int secure = 0;
@@ -340,34 +360,44 @@ static int mqtt_connect(lua_State* L) {
     const char * cert_pem = NULL;
     const char * client_cert_pem = NULL;
     const char * client_key_pem = NULL;
-
+    size_t cert_pem_len = 0;
+    size_t client_cert_pem_len = 0;
+    size_t client_key_pem_len = 0;
 
     if (lua_isnumber(L, n)) {
+        if (is_mqtt_uri || is_mqtts_uri)
+          return luaL_error(L, "port arg must be nil if giving full uri");
         port = luaL_checknumber(L, n);
         n++;
+    } else if (lua_type(L, n) == LUA_TNIL) {
+        n++;
     }
 
     if (lua_isnumber(L, n)) {
+        if (is_mqtt_uri || is_mqtts_uri)
+          return luaL_error(L, "secure on/off determined by uri");
         secure = !!luaL_checkinteger(L, n);
         n++;
 
+    } else if (lua_type(L, n) == LUA_TNIL) {
+        n++;
     } else {
         if (lua_istable(L, n)) {
             secure = true;
             lua_getfield(L, n, "ca_cert");
-            if ((cert_pem = luaL_optstring(L, -1, NULL)) != NULL) {
+            if ((cert_pem = luaL_optlstring(L, -1, NULL, &cert_pem_len)) != NULL) {
                 luaX_set_ref(L, -1, &mqtt_context->cert_pem);
             }
             lua_pop(L, 1);
             //
             lua_getfield(L, n, "client_cert");
-            if ((client_cert_pem = luaL_optstring(L, -1, NULL)) != NULL) {
+            if ((client_cert_pem = luaL_optlstring(L, -1, NULL, &client_cert_pem_len)) != NULL) {
                 luaX_set_ref(L, -1, &mqtt_context->client_cert_pem);
             }
             lua_pop(L, 1);
             //
             lua_getfield(L, n, "client_key");
-            if ((client_key_pem = luaL_optstring(L, -1, NULL)) != NULL) {
+            if ((client_key_pem = luaL_optlstring(L, -1, NULL, &client_key_pem_len)) != NULL) {
                 luaX_set_ref(L, -1, &mqtt_context->client_key_pem);
             }
             lua_pop(L, 1);
@@ -393,24 +423,26 @@ static int mqtt_connect(lua_State* L) {
 
     ESP_LOGD(TAG, "connect: mqtt_context*: %p", mqtt_context);
 
-    config.user_context = mqtt_context;        // store a pointer to our context in the mqtt client user context field
-                                               // this will be useful to identify to which instance events belong to
-    config.event_handle = mqtt_event_handler;  // set the function that will be called by the mqtt client everytime something
-                                               // happens
-
-    config.client_id = mqtt_context->client_id;
-    config.lwt_msg = mqtt_context->lwt_msg;
-    config.lwt_topic = mqtt_context->lwt_topic;
-    config.username = mqtt_context->username;
-    config.password = mqtt_context->password;
-    config.keepalive = mqtt_context->keepalive;
-    config.disable_clean_session = mqtt_context->disable_clean_session;
-    config.port = port;
-    config.disable_auto_reconnect = (reconnect == 0);
-    config.transport = secure ? MQTT_TRANSPORT_OVER_SSL : MQTT_TRANSPORT_OVER_TCP;
-    config.cert_pem = cert_pem;
-    config.client_cert_pem = client_cert_pem;
-    config.client_key_pem = client_key_pem;
+    if (config.broker.address.uri == NULL)
+    {
+      config.broker.address.port = port;
+      config.broker.address.transport =
+        secure ? MQTT_TRANSPORT_OVER_SSL : MQTT_TRANSPORT_OVER_TCP;
+    }
+    config.broker.verification.certificate = cert_pem;
+    config.broker.verification.certificate_len = cert_pem_len;
+    config.credentials.authentication.certificate = client_cert_pem;
+    config.credentials.authentication.certificate_len = client_cert_pem_len;
+    config.credentials.authentication.key = client_key_pem;
+    config.credentials.authentication.key_len = client_key_pem_len;
+    config.credentials.authentication.password = mqtt_context->password;
+    config.credentials.client_id = mqtt_context->client_id;
+    config.credentials.username = mqtt_context->username;
+    config.network.disable_auto_reconnect = (reconnect == 0);
+    config.session.disable_clean_session = mqtt_context->disable_clean_session;
+    config.session.keepalive = mqtt_context->keepalive;
+    config.session.last_will.msg = mqtt_context->lwt_msg;
+    config.session.last_will.topic = mqtt_context->lwt_topic;
 
     // create a mqtt client instance
     mqtt_context->client = esp_mqtt_client_init(&config);
@@ -419,6 +451,10 @@ static int mqtt_connect(lua_State* L) {
         return 0;
     }
 
+   // register the event handler with mqtt_context as the handler arg
+   esp_mqtt_client_register_event(
+     mqtt_context->client, ESP_EVENT_ANY_ID, mqtt_event_handler, mqtt_context);
+
     // actually start the mqtt client and connect
     esp_err_t err = esp_mqtt_client_start(mqtt_context->client);
     if (err != ESP_OK) {
diff --git a/components/modules/node.c b/components/modules/node.c
index af25ccd3..b16c67f0 100644
--- a/components/modules/node.c
+++ b/components/modules/node.c
@@ -5,6 +5,7 @@
 #include "platform.h"
 #include "task/task.h"
 #include "esp_system.h"
+#include "esp_timer.h"
 #include "esp_log.h"
 #include "esp_sleep.h"
 #include "driver/rtc_io.h"
diff --git a/components/modules/otaupgrade.c b/components/modules/otaupgrade.c
index 2444ebcf..3c206f2f 100644
--- a/components/modules/otaupgrade.c
+++ b/components/modules/otaupgrade.c
@@ -37,6 +37,7 @@
 #include "esp_system.h"
 #include "esp_ota_ops.h"
 #include "esp_partition.h"
+#include "spi_flash_mmap.h"
 
 static esp_ota_handle_t ota_handle;
 static const esp_partition_t *next;
diff --git a/components/modules/pulsecnt.c b/components/modules/pulsecnt.c
index 4f4df34b..62030e61 100644
--- a/components/modules/pulsecnt.c
+++ b/components/modules/pulsecnt.c
@@ -114,7 +114,7 @@ static void pulsecnt_task(task_param_t param, task_prio_t prio)
   (void)prio;
 
   // we bit packed the unit number and status into 1 int in the IRAM interrupt so need to unpack here
-  uint32_t unit = (uint32_t)param & 0xffu;
+  uint8_t unit = (uint8_t)param & 0xffu;
   int status = ((uint32_t)param >> 8);
   
   // int16_t cur_count, evt_count = 0;
@@ -217,7 +217,7 @@ static void pulsecnt_task(task_param_t param, task_prio_t prio)
     // lua_pushinteger (L, status);
     luaL_pcallx (L, 6, 0);
   } else {
-    if (pc->is_debug) ESP_LOGI("pulsecnt", "Could not find cb for unit %d with ptr %d", unit, pc->cb_ref);
+    if (pc->is_debug) ESP_LOGI("pulsecnt", "Could not find cb for unit %d with ptr %ld", unit, pc->cb_ref);
   }
 }
 
@@ -599,7 +599,7 @@ static int pulsecnt_create( lua_State *L ) {
     pc->is_debug = true;
   }
 
-  if (pc->is_debug) ESP_LOGI("pulsecnt", "Created obj for unit %d with callback ref of %d", pc->unit, pc->cb_ref );
+  if (pc->is_debug) ESP_LOGI("pulsecnt", "Created obj for unit %d with callback ref of %ld", pc->unit, pc->cb_ref );
 
   return 1;
 }
diff --git a/components/modules/sdmmc.c b/components/modules/sdmmc.c
index e4cd94cb..d800ba14 100644
--- a/components/modules/sdmmc.c
+++ b/components/modules/sdmmc.c
@@ -13,6 +13,7 @@
 #include "driver/sdspi_host.h"
 
 #include "common.h"
+#include "platform.h"
 
 // We're limiting ourselves to the number of FAT volumes configured.
 #define NUM_CARDS FF_VOLUMES
@@ -20,8 +21,12 @@ sdmmc_card_t *lsdmmc_card[NUM_CARDS];
 
 // local definition for SDSPI host
 #define LSDMMC_HOST_SDSPI 100
+#ifdef CONFIG_IDF_TARGET_ESP32
 #define LSDMMC_HOST_HSPI (LSDMMC_HOST_SDSPI + HSPI_HOST)
 #define LSDMMC_HOST_VSPI (LSDMMC_HOST_SDSPI + VSPI_HOST)
+#endif
+#define LSDMMC_HOST_SPI2 (LSDMMC_HOST_SDSPI + SPI2_HOST)
+#define LSDMMC_HOST_SPI3 (LSDMMC_HOST_SDSPI + SPI3_HOST)
 
 typedef struct {
   sdmmc_card_t *card;
@@ -31,25 +36,21 @@ typedef struct {
 } lsdmmc_ud_t;
 
 
-static void choose_partition(uint8_t pdrv, uint8_t part)
+static bool is_field_present(lua_State *L, int idx, const char *field)
 {
-  // Update the volume->partition mapping in FatFS
-  for (unsigned i = 0; i < FF_VOLUMES; ++i)
-  {
-    if (VolToPart[i].pd == pdrv)
-      VolToPart[i].pt = part;
-  }
+  lua_getfield(L, idx, field);
+  bool present = !lua_isnoneornil(L, -1);
+  lua_pop(L, 1);
+  return present;
 }
 
 
-static esp_err_t sdmmc_mount_fat(lsdmmc_ud_t *ud, const char *base_path, uint8_t partition)
+static esp_err_t sdmmc_mount_fat(lsdmmc_ud_t *ud, const char *base_path)
 {
   esp_err_t err = ff_diskio_get_drive(&ud->pdrv);
   if (err != ESP_OK)
     return err;
 
-  choose_partition(ud->pdrv, partition);
-
   ff_diskio_register_sdmmc(ud->pdrv, ud->card);
 
   char drv[3] = { (char)('0' + ud->pdrv), ':', 0 };
@@ -73,7 +74,6 @@ fail:
     ud->fs = NULL;
   }
   esp_vfs_fat_unregister_path(base_path);
-  choose_partition(ud->pdrv, 0);
   ff_diskio_unregister(ud->pdrv);
 
   return err;
@@ -101,7 +101,10 @@ static int lsdmmc_init( lua_State *L )
 
   int slot = luaL_checkint( L, ++stack );
   luaL_argcheck( L, slot == SDMMC_HOST_SLOT_0 || slot == SDMMC_HOST_SLOT_1 ||
-                    slot == LSDMMC_HOST_HSPI || slot == LSDMMC_HOST_VSPI,
+#ifdef CONFIG_IDF_TARGET_ESP32
+                    slot == LSDMMC_HOST_HSPI || slot == LSDMMC_HOST_VSPI ||
+#endif
+                    slot == LSDMMC_HOST_SPI2 || slot == LSDMMC_HOST_SPI3,
                  stack, "invalid slot" );
 
   bool is_sdspi = false;
@@ -115,10 +118,7 @@ static int lsdmmc_init( lua_State *L )
   int wp_pin   = SDMMC_SLOT_NO_WP;
   int freq_khz = SDMMC_FREQ_DEFAULT;
   int width    = SDMMC_HOST_FLAG_1BIT;
-  // additional entries for SDSPI configuration
-  int sck_pin  = -1;
-  int mosi_pin = -1;
-  int miso_pin = -1;
+  // additional cs for SDSPI configuration
   int cs_pin   = -1;
 
   if (lua_type( L, ++stack ) == LUA_TTABLE) {
@@ -131,9 +131,12 @@ static int lsdmmc_init( lua_State *L )
 
     // mandatory entries for SDSPI configuration
     if (is_sdspi) {
-      sck_pin  = opt_checkint_range( L, "sck_pin", -1, 0, GPIO_NUM_MAX );
-      mosi_pin = opt_checkint_range( L, "mosi_pin", -1, 0, GPIO_NUM_MAX );
-      miso_pin = opt_checkint_range( L, "miso_pin", -1, 0, GPIO_NUM_MAX );
+      if (is_field_present(L, -1, "sck_pin") ||
+          is_field_present(L, -1, "mosi_pin") ||
+          is_field_present(L, -1, "miso_pin"))
+      {
+        platform_print_deprecation_note("SCK/MOSI/MISO ignored; please configure via spimaster instead", "IDFv5");
+      }
       cs_pin   = opt_checkint_range( L, "cs_pin", -1, 0, GPIO_NUM_MAX );
     }
 
@@ -166,16 +169,16 @@ static int lsdmmc_init( lua_State *L )
   }
   if (res == ESP_OK || res == ESP_ERR_INVALID_STATE) {
 
+    sdmmc_host_t sdspi_host_config = SDSPI_HOST_DEFAULT();
+    sdmmc_host_t sdmmc_host_config = SDMMC_HOST_DEFAULT();
+
     if (is_sdspi) {
       // configure SDSPI slot
-      sdspi_slot_config_t slot_config = SDSPI_SLOT_CONFIG_DEFAULT();
-      slot_config.gpio_miso = miso_pin;
-      slot_config.gpio_mosi = mosi_pin;
-      slot_config.gpio_sck = sck_pin;
-      slot_config.gpio_cs = cs_pin;
-      slot_config.gpio_cd = cd_pin;
-      slot_config.gpio_wp = wp_pin;
-      res = sdspi_host_init_slot( slot, &slot_config );
+      sdspi_device_config_t dev_config = SDSPI_DEVICE_CONFIG_DEFAULT();
+      dev_config.gpio_cs = cs_pin;
+      dev_config.gpio_cd = cd_pin;
+      dev_config.gpio_wp = wp_pin;
+      res = sdspi_host_init_device(&dev_config, &sdspi_host_config.slot);
     } else {
       // configure SDMMC slot
       sdmmc_slot_config_t slot_config = SDMMC_SLOT_CONFIG_DEFAULT();
@@ -184,10 +187,7 @@ static int lsdmmc_init( lua_State *L )
       res = sdmmc_host_init_slot( slot, &slot_config );
     }
     if (res == ESP_OK) {
-
       // initialize card
-      sdmmc_host_t sdspi_host_config = SDSPI_HOST_DEFAULT();
-      sdmmc_host_t sdmmc_host_config = SDMMC_HOST_DEFAULT();
       sdmmc_host_t *host_config = is_sdspi ? &sdspi_host_config : &sdmmc_host_config;
       host_config->slot = slot;
       host_config->flags &= ~SDMMC_HOST_FLAG_8BIT;
@@ -352,13 +352,21 @@ static int lsdmmc_mount( lua_State *L )
   (void)card;
 
   const char *ldrv = luaL_checkstring(L, 2);
-  int part = luaL_optint(L, 3, 0);
+  if (!lua_isnoneornil(L, 3))
+  {
+    // Warn that this feature isn't around
+    platform_print_deprecation_note(
+      "partition selection not supported", "IDFv5");
+    // ...and error if used to select something we can no longer do
+    if (luaL_optint(L, 3, 0) > 1)
+      return luaL_error(L, "only first partition supported since IDFv5");
+  }
 
   lua_settop(L, 2);
 
   if (ud->fs == NULL)
   {
-    esp_err_t err = sdmmc_mount_fat(ud, ldrv, part);
+    esp_err_t err = sdmmc_mount_fat(ud, ldrv);
     if (err == ESP_OK)
     {
       // We need this when we unmount
@@ -408,8 +416,12 @@ LROT_BEGIN(sdmmc, NULL, 0)
   LROT_FUNCENTRY( init,  lsdmmc_init )
   LROT_NUMENTRY(  HS1,   SDMMC_HOST_SLOT_0 )
   LROT_NUMENTRY(  HS2,   SDMMC_HOST_SLOT_1 )
+#ifdef CONFIG_IDF_TARGET_ESP32
   LROT_NUMENTRY(  HSPI,  LSDMMC_HOST_HSPI )
   LROT_NUMENTRY(  VSPI,  LSDMMC_HOST_VSPI )
+#endif
+  LROT_NUMENTRY(  SPI2,  LSDMMC_HOST_SPI2 )
+  LROT_NUMENTRY(  SPI3,  LSDMMC_HOST_SPI3 )
   LROT_NUMENTRY(  W1BIT, SDMMC_HOST_FLAG_1BIT )
   LROT_NUMENTRY(  W4BIT, SDMMC_HOST_FLAG_1BIT |
                          SDMMC_HOST_FLAG_4BIT )
diff --git a/components/modules/spi.c b/components/modules/spi.c
index 3424e173..a6751780 100644
--- a/components/modules/spi.c
+++ b/components/modules/spi.c
@@ -17,7 +17,9 @@ LROT_BEGIN(lspi, NULL, 0)
 #endif
   LROT_NUMENTRY( SPI1,   SPI1_HOST )
   LROT_NUMENTRY( SPI2,   SPI2_HOST )
+#ifdef SPI3_HOST
   LROT_NUMENTRY( SPI3,   SPI3_HOST )
+#endif
 LROT_END(lspi, NULL, 0)
 
 int luaopen_spi( lua_State *L ) {
diff --git a/components/modules/time.c b/components/modules/time.c
index 155fb409..9c72dd62 100644
--- a/components/modules/time.c
+++ b/components/modules/time.c
@@ -32,8 +32,8 @@ static int time_get(lua_State *L)
 {
   struct timeval  tv;
   gettimeofday (&tv, NULL);
-  lua_pushnumber (L, tv.tv_sec);
-  lua_pushnumber (L, tv.tv_usec);
+  lua_pushinteger (L, tv.tv_sec);
+  lua_pushinteger (L, tv.tv_usec);
   return 2;
 }
 
diff --git a/components/modules/touch.c b/components/modules/touch.c
index a1d2137b..e8bb2abd 100644
--- a/components/modules/touch.c
+++ b/components/modules/touch.c
@@ -190,7 +190,7 @@ static int touch_create( lua_State *L ) {
   tp->is_intr = opt_checkbool(L, "intrInitAtStart", true);
   tp->thresTrigger = opt_checkint_range(L, "thresTrigger", TOUCH_TRIGGER_BELOW, TOUCH_TRIGGER_BELOW, TOUCH_TRIGGER_MAX);
 
-  if (tp->is_debug) ESP_LOGI(TAG, "isDebug: %d, filterMs: %d, lvolt: %d, hvolt: %d, atten: %d, slope: %d, intrInitAtStart: %d, thresTrigger: %d", 
+  if (tp->is_debug) ESP_LOGI(TAG, "isDebug: %d, filterMs: %lu, lvolt: %d, hvolt: %d, atten: %d, slope: %d, intrInitAtStart: %d, thresTrigger: %d",
     tp->is_debug, tp->filterMs, tp->lvolt, tp->hvolt, tp->atten, tp->slope, tp->is_intr, tp->thresTrigger);
 
   // get the field pad. this can be passed in as int or table of ints. pad = 0 || {0,1,2,3,4,5,6,7,8,9}
@@ -277,7 +277,7 @@ static int touch_create( lua_State *L ) {
     // Initialize and start a software filter to detect slight change of capacitance.
     if (tp->filterMs > 0) {
       touch_pad_filter_start(tp->filterMs);
-      if (tp->is_debug) ESP_LOGI(TAG, "Set filter period to %d ms", tp->filterMs );
+      if (tp->is_debug) ESP_LOGI(TAG, "Set filter period to %lu ms", tp->filterMs );
     }
 
     // Register touch interrupt ISR
@@ -320,7 +320,7 @@ static int touch_create( lua_State *L ) {
     // prevent false triggering when detecting slight change of capacitance. Need to call 
     // touch_pad_filter_start before all touch filter APIs
     if (tp->filterMs > 0) {
-      if (tp->is_debug) ESP_LOGI(TAG, "You provided a filter so turning on filter mode. filterMs: %d", tp->filterMs);
+      if (tp->is_debug) ESP_LOGI(TAG, "You provided a filter so turning on filter mode. filterMs: %lu", tp->filterMs);
       esp_err_t err = touch_pad_filter_start(tp->filterMs);
       if (err == ESP_ERR_INVALID_ARG) {
         ESP_LOGI(TAG, "Filter start parameter error");
diff --git a/components/platform/CMakeLists.txt b/components/platform/CMakeLists.txt
index 1e7148e8..955f8dbb 100644
--- a/components/platform/CMakeLists.txt
+++ b/components/platform/CMakeLists.txt
@@ -1,8 +1,27 @@
 idf_component_register(
-  SRCS "dht.c" "flash_api.c" "onewire.c" "platform.c"
-    "platform_flash.c" "platform_partition.c" "platform_rmt.c"
-    "u8x8_nodemcu_hal.c" "ucg_nodemcu_hal.c" "wdt.c" "ws2812.c"
+  SRCS
+    "dht.c"
+    "onewire.c"
+    "platform.c"
+    "platform_flash.c"
+    "platform_partition.c"
+    "platform_rmt.c"
+    "u8x8_nodemcu_hal.c"
+    "ucg_nodemcu_hal.c"
+    "wdt.c"
+    "ws2812.c"
   INCLUDE_DIRS "include"
-  REQUIRES "spiffs" "u8g2" "ucg" "driver_i2c" "task"
-  PRIV_REQUIRES "bootloader_support" "lua" "esp32"
+  REQUIRES
+    "driver"
+    "driver_i2c"
+    "spi_flash"
+    "spiffs"
+    "task"
+    "u8g2"
+    "ucg"
+  PRIV_REQUIRES
+    "bootloader_support"
+    "esp_rom"
+    "lua"
+    "soc"
 )
diff --git a/components/platform/flash_api.c b/components/platform/flash_api.c
deleted file mode 100644
index 9b6383a4..00000000
--- a/components/platform/flash_api.c
+++ /dev/null
@@ -1,179 +0,0 @@
-/******************************************************************************
- * Flash api for NodeMCU
- * NodeMCU Team
- * 2014-12-31
-*******************************************************************************/
-#include "flash_api.h"
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include "rom/spi_flash.h"
-#include "platform_wdt.h"
-#include "esp_image_format.h"
-#include "esp_flash_partitions.h"
-
-#define FLASH_HDR_ADDR 0x1000
-
-static inline esp_image_header_t flash_load_rom_header (void)
-{
-  esp_image_header_t hdr;
-  if (ESP_OK !=
-      spi_flash_read (FLASH_HDR_ADDR, (uint32_t *)&hdr, sizeof (hdr)))
-  {
-    NODE_ERR("Failed to load flash header block!\n");
-    abort();
-  }
-  return hdr;
-}
-
-#define IRAM_SECTION __attribute__((section(".iram1")))
-static void IRAM_SECTION update_flash_chip_size (uint32_t sz)
-{
-  esp_rom_spiflash_config_param (
-    g_rom_flashchip.device_id,
-    sz,
-    g_rom_flashchip.block_size,
-    g_rom_flashchip.sector_size,
-    g_rom_flashchip.page_size,
-    g_rom_flashchip.status_mask);
-}
-
-static uint32_t __attribute__((section(".iram1"))) flash_detect_size_byte(void)
-{
-#define DETECT_SZ 32
-  uint32_t detected_size = FLASH_SIZE_1MBYTE;
-  uint8_t data_orig[DETECT_SZ] PLATFORM_ALIGNMENT = {0};
-  uint8_t data_new[DETECT_SZ] PLATFORM_ALIGNMENT = {0};
-  // Ensure we read something which isn't just 0xff...
-  const uint32_t offs = ESP_PARTITION_TABLE_OFFSET;
-  // Detect read failure or wrap-around on flash read to find end of flash
-  if (ESP_OK == spi_flash_read (offs, (uint32_t *)data_orig, DETECT_SZ))
-  {
-    update_flash_chip_size (FLASH_SIZE_16MBYTE);
-    while ((detected_size < FLASH_SIZE_16MBYTE) &&
-           (ESP_OK == spi_flash_read (
-              detected_size + offs, (uint32_t *)data_new, DETECT_SZ)) &&
-           (0 != memcmp(data_orig, data_new, DETECT_SZ)))
-    {
-        detected_size *= 2;
-    }
-
-    update_flash_chip_size (detected_size);
-  };
-  return detected_size;
-#undef FLASH_BUFFER_SIZE_DETECT
-}
-
-uint32_t flash_safe_get_size_byte(void)
-{
-  static uint32_t flash_size = 0;
-  if (flash_size == 0)
-  {
-    flash_size = flash_detect_size_byte();
-  }
-  return flash_size;
-}
-
-
-uint16_t flash_safe_get_sec_num(void)
-{
-  return (flash_safe_get_size_byte() / (SPI_FLASH_SEC_SIZE));
-}
-
-uint32_t flash_rom_get_size_byte(void)
-{
-  static uint32_t flash_size = 0;
-  if (flash_size == 0)
-  {
-    switch (flash_load_rom_header ().spi_size)
-    {
-      default: // Unknown flash size, fall back mode.
-      case ESP_IMAGE_FLASH_SIZE_1MB:  flash_size = FLASH_SIZE_1MBYTE; break;
-      case ESP_IMAGE_FLASH_SIZE_2MB:  flash_size = FLASH_SIZE_2MBYTE; break;
-      case ESP_IMAGE_FLASH_SIZE_4MB:  flash_size = FLASH_SIZE_4MBYTE; break;
-      case ESP_IMAGE_FLASH_SIZE_8MB:  flash_size = FLASH_SIZE_8MBYTE; break;
-      case ESP_IMAGE_FLASH_SIZE_16MB: flash_size = FLASH_SIZE_16MBYTE; break;
-    }
-  }
-  return flash_size;
-}
-
-static bool flash_rom_set_size_type(uint8_t size_code)
-{
-    // Dangerous, here are dinosaur infested!!!!!
-    // Reboot required!!!
-    // If you don't know what you're doing, your nodemcu may turn into stone ...
-    NODE_DBG("\nBEGIN SET FLASH HEADER\n");
-    esp_image_header_t *hdr = (esp_image_header_t *)malloc (SPI_FLASH_SEC_SIZE);
-    if (!hdr)
-      return false;
-
-    if (ESP_OK == spi_flash_read (FLASH_HDR_ADDR, (uint32_t *)hdr, SPI_FLASH_SEC_SIZE))
-    {
-      hdr->spi_size = size_code;
-      if (ESP_OK == spi_flash_erase_sector (FLASH_HDR_ADDR / SPI_FLASH_SEC_SIZE))
-      {
-        NODE_DBG("\nERASE SUCCESS\n");
-      }
-      if (ESP_OK == spi_flash_write(FLASH_HDR_ADDR, (uint32_t *)hdr, SPI_FLASH_SEC_SIZE))
-      {
-        NODE_DBG("\nWRITE SUCCESS, %u\n", size_code);
-      }
-    }
-    free (hdr);
-    NODE_DBG("\nEND SET FLASH HEADER\n");
-    return true;
-}
-
-
-bool flash_rom_set_size_byte(uint32_t size)
-{
-    // Dangerous, here are dinosaur infested!!!!!
-    // Reboot required!!!
-    bool ok = true;
-    uint8_t size_code = 0;
-    switch (size)
-    {
-      case FLASH_SIZE_1MBYTE:  size_code = ESP_IMAGE_FLASH_SIZE_1MB; break;
-      case FLASH_SIZE_2MBYTE:  size_code = ESP_IMAGE_FLASH_SIZE_2MB; break;
-      case FLASH_SIZE_4MBYTE:  size_code = ESP_IMAGE_FLASH_SIZE_4MB; break;
-      case FLASH_SIZE_8MBYTE:  size_code = ESP_IMAGE_FLASH_SIZE_8MB; break;
-      case FLASH_SIZE_16MBYTE: size_code = ESP_IMAGE_FLASH_SIZE_16MB; break;
-      default: ok = false; break;
-    }
-    if (ok)
-      ok = flash_rom_set_size_type (size_code);
-    return ok;
-}
-
-
-uint16_t flash_rom_get_sec_num(void)
-{
-  return ( flash_rom_get_size_byte() / (SPI_FLASH_SEC_SIZE) );
-}
-
-
-uint8_t flash_rom_get_mode(void)
-{
-  return flash_load_rom_header ().spi_mode;
-}
-
-
-uint32_t flash_rom_get_speed(void)
-{
-  switch (flash_load_rom_header ().spi_speed)
-  {
-    case ESP_IMAGE_SPI_SPEED_40M: return 40000000;
-    case ESP_IMAGE_SPI_SPEED_26M: return 26700000; // TODO: verify 26.7MHz
-    case ESP_IMAGE_SPI_SPEED_20M: return 20000000;
-    case ESP_IMAGE_SPI_SPEED_80M: return 80000000;
-    default: break;
-  }
-  return 0;
-}
-
-esp_err_t flash_erase(size_t sector)
-{
-  platform_wdt_feed();
-  return spi_flash_erase_sector(sector);
-}
diff --git a/components/platform/include/cpu_esp32.h b/components/platform/include/cpu_esp32.h
index f8ae6968..6a8fe104 100644
--- a/components/platform/include/cpu_esp32.h
+++ b/components/platform/include/cpu_esp32.h
@@ -2,7 +2,7 @@
 #define _CPU_ESP32_H_
 
 #include "sdkconfig.h"
-#include "esp_spi_flash.h"
+#include "spi_flash_mmap.h"
 
 #define NUM_UART SOC_UART_NUM
 
@@ -10,12 +10,4 @@
 #define INTERNAL_FLASH_WRITE_UNIT_SIZE  4
 #define INTERNAL_FLASH_READ_UNIT_SIZE	  4
 
-#define FLASH_SEC_NUM   (flash_safe_get_sec_num())
-
-// Determine whether an address is in the flash-cache range
-static inline bool is_cache_flash_addr (uint32_t addr)
-{
-  return addr >= 0x3F400000 && addr < 0x3FC00000;
-}
-
 #endif
diff --git a/components/platform/include/flash_api.h b/components/platform/include/flash_api.h
deleted file mode 100644
index fb703d44..00000000
--- a/components/platform/include/flash_api.h
+++ /dev/null
@@ -1,25 +0,0 @@
-#ifndef __FLASH_API_H__
-#define __FLASH_API_H__
-#include "platform.h"
-#include "esp_spi_flash.h"
-
-uint32_t flash_safe_get_size_byte(void);
-uint16_t flash_safe_get_sec_num(void);
-
-uint32_t flash_rom_get_size_byte(void);
-    bool flash_rom_set_size_byte(uint32_t);
-uint16_t flash_rom_get_sec_num(void);
- uint8_t flash_rom_get_mode(void);
-uint32_t flash_rom_get_speed(void);
-
-#define FLASH_SIZE_1MBYTE   ( 1 * 1024 * 1024)
-#define FLASH_SIZE_2MBYTE   ( 2 * 1024 * 1024)
-#define FLASH_SIZE_4MBYTE   ( 4 * 1024 * 1024)
-#define FLASH_SIZE_8MBYTE   ( 8 * 1024 * 1024)
-#define FLASH_SIZE_16MBYTE  (16 * 1024 * 1024)
-
-#define flash_write spi_flash_write
-esp_err_t flash_erase(size_t sector);
-#define flash_read spi_flash_read
-
-#endif // __FLASH_API_H__
diff --git a/components/platform/include/platform.h b/components/platform/include/platform.h
index 786e9ab5..5c0929a4 100644
--- a/components/platform/include/platform.h
+++ b/components/platform/include/platform.h
@@ -90,7 +90,7 @@ typedef struct {
 
 typedef struct {
   QueueHandle_t queue;
-  xTaskHandle taskHandle;
+  TaskHandle_t taskHandle;
   int receive_rf;
   int error_rf;
   char *line_buffer;
@@ -137,7 +137,6 @@ int platform_adc_channel_exists( uint8_t adc, uint8_t channel );
 uint8_t platform_adc_set_width( uint8_t adc, int bits );
 uint8_t platform_adc_setup( uint8_t adc, uint8_t channel, uint8_t attn );
 int platform_adc_read( uint8_t adc, uint8_t channel );
-int platform_adc_read_hall_sensor( );
 enum {
     PLATFORM_ADC_ATTEN_0db   = 0,
     PLATFORM_ADC_ATTEN_2_5db = 1,
@@ -220,9 +219,6 @@ int platform_ws2812_send( void );
 uint32_t platform_flash_get_sector_of_address( uint32_t addr );
 uint32_t platform_flash_write( const void *from, uint32_t toaddr, uint32_t size );
 uint32_t platform_flash_read( void *to, uint32_t fromaddr, uint32_t size );
-uint32_t platform_s_flash_write( const void *from, uint32_t toaddr, uint32_t size );
-uint32_t platform_s_flash_read( void *to, uint32_t fromaddr, uint32_t size );
-uint32_t platform_flash_get_num_sectors(void);
 int platform_flash_erase_sector( uint32_t sector_id );
 
 
diff --git a/components/platform/onewire.c b/components/platform/onewire.c
index 4bc455f6..4d5888e5 100644
--- a/components/platform/onewire.c
+++ b/components/platform/onewire.c
@@ -63,6 +63,8 @@ sample code bearing this copyright.
 
 #include "driver/rmt.h"
 #include "driver/gpio.h"
+#include "rom/gpio.h" // for gpio_matrix_out()
+#include "soc/gpio_periph.h"
 #include "esp_log.h"
 
 #define TRUE (1==1)
@@ -108,7 +110,7 @@ static const uint8_t owDefaultPower = 0;
 
 static int onewire_rmt_init( uint8_t gpio_num )
 {
-  if(!GPIO_IS_VALID_GPIO(gpio_num)) {
+  if(!platform_gpio_exists(gpio_num)) {
     return PLATFORM_ERR;
   }
 
@@ -187,7 +189,7 @@ static void onewire_flush_rmt_rx_buf( void )
 // check rmt TX&RX channel assignment and eventually attach them to the requested pin
 static int onewire_rmt_attach_pin( uint8_t gpio_num )
 {
-  if(!GPIO_IS_VALID_GPIO(gpio_num)) {
+  if(!platform_gpio_exists(gpio_num)) {
     return PLATFORM_ERR;
   }
 
diff --git a/components/platform/platform.c b/components/platform/platform.c
index 5fc404d4..ea759c34 100644
--- a/components/platform/platform.c
+++ b/components/platform/platform.c
@@ -5,7 +5,9 @@
 #include "soc/uart_reg.h"
 #include <stdio.h>
 #include <string.h>
-#include <freertos/semphr.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/queue.h"
+#include "freertos/semphr.h"
 #include "lua.h"
 #include "rom/uart.h"
 #include "esp_log.h"
@@ -22,8 +24,24 @@ int platform_init (void)
 // *****************************************************************************
 // GPIO subsection
 
-int platform_gpio_exists( unsigned gpio ) { return GPIO_IS_VALID_GPIO(gpio); }
-int platform_gpio_output_exists( unsigned gpio ) { return GPIO_IS_VALID_OUTPUT_GPIO(gpio); }
+int platform_gpio_exists(unsigned gpio)
+{
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wtype-limits"
+  // Suppress ">= is always true" due to unsigned type here
+  return GPIO_IS_VALID_GPIO(gpio);
+#pragma GCC diagnostic pop
+}
+
+
+int platform_gpio_output_exists(unsigned gpio)
+{
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wtype-limits"
+  // Suppress ">= is always true" due to unsigned type here
+  return GPIO_IS_VALID_OUTPUT_GPIO(gpio);
+#pragma GCC diagnostic pop
+}
 
 
 // ****************************************************************************
@@ -136,7 +154,7 @@ static void task_uart( void *pvParameters ){
   uart_event_t event;
 
   for(;;) {
-    if(xQueueReceive(uart_status[id].queue, (void * )&event, (portTickType)portMAX_DELAY)) {
+    if(xQueueReceive(uart_status[id].queue, (void * )&event, (TickType_t)portMAX_DELAY)) {
       switch(event.type) {
         case UART_DATA: {
           // Attempt to coalesce received bytes to reduce risk of overrunning
@@ -222,6 +240,7 @@ uint32_t platform_uart_setup( unsigned id, uint32_t baud, int databits, int pari
      .baud_rate = baud,
      .flow_ctrl = flow_control,
      .rx_flow_ctrl_thresh = UART_FIFO_LEN - 16,
+     .source_clk = UART_SCLK_DEFAULT,
   };
   
   switch (databits)
@@ -523,14 +542,6 @@ int platform_adc_read( uint8_t adc, uint8_t channel ) {
   return value;
 }
 
-int platform_adc_read_hall_sensor( ) {
-#if defined(CONFIG_IDF_TARGET_ESP32)
-  int value = hall_sensor_read( );
-  return value;
-#else
-  return -1;
-#endif
-}
 // *****************************************************************************
 // I2C platform interface
 
diff --git a/components/platform/platform_flash.c b/components/platform/platform_flash.c
index d6e00b36..acabdccd 100644
--- a/components/platform/platform_flash.c
+++ b/components/platform/platform_flash.c
@@ -1,5 +1,6 @@
 #include "platform.h"
-#include "flash_api.h"
+#include "platform_wdt.h"
+#include "esp_flash.h"
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
@@ -21,183 +22,43 @@ static uint32_t flashh_find_sector( uint32_t address, uint32_t *pstart, uint32_t
   return sect_id;
 }
 
+
 uint32_t platform_flash_get_sector_of_address( uint32_t addr )
 {
   return flashh_find_sector( addr, NULL, NULL );
 }
 
-uint32_t platform_flash_get_num_sectors(void)
-{
-  return flash_safe_get_sec_num ();
-}
 
 uint32_t platform_flash_write( const void *from, uint32_t toaddr, uint32_t size )
 {
-#ifndef INTERNAL_FLASH_WRITE_UNIT_SIZE
-  return platform_s_flash_write( from, toaddr, size );
-#else // #ifindef INTERNAL_FLASH_WRITE_UNIT_SIZE
-  uint32_t temp, rest, ssize = size;
-  unsigned i;
-  char tmpdata[ INTERNAL_FLASH_WRITE_UNIT_SIZE ];
-  const uint8_t *pfrom = ( const uint8_t* )from;
-  const uint32_t blksize = INTERNAL_FLASH_WRITE_UNIT_SIZE;
-  const uint32_t blkmask = INTERNAL_FLASH_WRITE_UNIT_SIZE - 1;
-
-  // Align the start
-  if( toaddr & blkmask )
-  {
-    rest = toaddr & blkmask;
-    temp = toaddr & ~blkmask; // this is the actual aligned address
-    // memcpy( tmpdata, ( const void* )temp, blksize );
-    platform_s_flash_read( tmpdata, temp, blksize );
-    for( i = rest; size && ( i < blksize ); i ++, size --, pfrom ++ )
-      tmpdata[ i ] = *pfrom;
-    platform_s_flash_write( tmpdata, temp, blksize );
-    if( size == 0 )
-      return ssize;
-    toaddr = temp + blksize;
-  }
-  // The start address is now a multiple of blksize
-  // Compute how many bytes we can write as multiples of blksize
-  rest = size & blkmask;
-  temp = size & ~blkmask;
-  // Program the blocks now
-  if( temp )
-  {
-    platform_s_flash_write( pfrom, toaddr, temp );
-    toaddr += temp;
-    pfrom += temp;
-  }
-  // And the final part of a block if needed
-  if( rest )
-  {
-    // memcpy( tmpdata, ( const void* )toaddr, blksize );
-    platform_s_flash_read( tmpdata, toaddr, blksize );
-    for( i = 0; size && ( i < rest ); i ++, size --, pfrom ++ )
-      tmpdata[ i ] = *pfrom;
-    platform_s_flash_write( tmpdata, toaddr, blksize );
-  }
-  return ssize;
-#endif // #ifndef INTERNAL_FLASH_WRITE_UNIT_SIZE
+  esp_err_t err = esp_flash_write(NULL, from, toaddr, size);
+  if (err != ESP_OK)
+    return 0;
+  else
+    return size;
 }
 
+
 uint32_t platform_flash_read( void *to, uint32_t fromaddr, uint32_t size )
 {
-#ifndef INTERNAL_FLASH_READ_UNIT_SIZE
-  return platform_s_flash_read( to, fromaddr, size );
-#else // #ifindef INTERNAL_FLASH_READ_UNIT_SIZE
-  uint32_t temp, rest, ssize = size;
-  unsigned i;
-  char tmpdata[ INTERNAL_FLASH_READ_UNIT_SIZE ] __attribute__ ((aligned(INTERNAL_FLASH_READ_UNIT_SIZE)));
-  uint8_t *pto = ( uint8_t* )to;
-  const uint32_t blksize = INTERNAL_FLASH_READ_UNIT_SIZE;
-  const uint32_t blkmask = INTERNAL_FLASH_READ_UNIT_SIZE - 1;
-
-  // Align the start
-  if( fromaddr & blkmask )
-  {
-    rest = fromaddr & blkmask;
-    temp = fromaddr & ~blkmask; // this is the actual aligned address
-    platform_s_flash_read( tmpdata, temp, blksize );
-    for( i = rest; size && ( i < blksize ); i ++, size --, pto ++ )
-      *pto = tmpdata[ i ];
-
-    if( size == 0 )
-      return ssize;
-    fromaddr = temp + blksize;
-  }
-  // The start address is now a multiple of blksize
-  // Compute how many bytes we can read as multiples of blksize
-  rest = size & blkmask;
-  temp = size & ~blkmask;
-  // Program the blocks now
-  if( temp )
-  {
-    platform_s_flash_read( pto, fromaddr, temp );
-    fromaddr += temp;
-    pto += temp;
-  }
-  // And the final part of a block if needed
-  if( rest )
-  {
-    platform_s_flash_read( tmpdata, fromaddr, blksize );
-    for( i = 0; size && ( i < rest ); i ++, size --, pto ++ )
-      *pto = tmpdata[ i ];
-  }
-  return ssize;
-#endif // #ifndef INTERNAL_FLASH_READ_UNIT_SIZE
-}
-
-
-/*
- * Assumptions:
- * > toaddr is INTERNAL_FLASH_WRITE_UNIT_SIZE aligned
- * > size is a multiple of INTERNAL_FLASH_WRITE_UNIT_SIZE
- */
-uint32_t platform_s_flash_write( const void *from, uint32_t toaddr, uint32_t size )
-{
-  esp_err_t r;
-  const uint32_t blkmask = INTERNAL_FLASH_WRITE_UNIT_SIZE - 1;
-  uint32_t *apbuf = NULL;
-  uint32_t fromaddr = (uint32_t)from;
-  if( (fromaddr & blkmask ) || is_cache_flash_addr(fromaddr)) {
-    apbuf = (uint32_t *)malloc(size);
-    if(!apbuf)
-      return 0;
-    memcpy(apbuf, from, size);
-  }
-  r = flash_write(toaddr, apbuf?(uint32_t *)apbuf:(uint32_t *)from, size);
-  if(apbuf)
-    free(apbuf);
-  if(ESP_OK == r)
-    return size;
-  else{
-    NODE_ERR( "ERROR in flash_write: r=%d at %08X\n", ( int )r, ( unsigned )toaddr);
+  esp_err_t err = esp_flash_write(NULL, to, fromaddr, size);
+  if (err != ESP_OK)
     return 0;
-  }
-}
-
-
-/*
- * Assumptions:
- * > fromaddr is INTERNAL_FLASH_READ_UNIT_SIZE aligned
- * > size is a multiple of INTERNAL_FLASH_READ_UNIT_SIZE
- */
-uint32_t platform_s_flash_read( void *to, uint32_t fromaddr, uint32_t size )
-{
-  if (size==0)
-    return 0;
-
-  esp_err_t r;
-
-  const uint32_t blkmask = (INTERNAL_FLASH_READ_UNIT_SIZE - 1);
-  if( ((uint32_t)to) & blkmask )
-  {
-    uint32_t size2=size-INTERNAL_FLASH_READ_UNIT_SIZE;
-    uint32_t* to2=(uint32_t*)((((uint32_t)to)&(~blkmask))+INTERNAL_FLASH_READ_UNIT_SIZE);
-    r = flash_read(fromaddr, to2, size2);
-    if(ESP_OK == r)
-    {
-      memmove(to,to2,size2);
-      char back[ INTERNAL_FLASH_READ_UNIT_SIZE ] __attribute__ ((aligned(INTERNAL_FLASH_READ_UNIT_SIZE)));
-      r=flash_read(fromaddr+size2,(uint32_t*)back,INTERNAL_FLASH_READ_UNIT_SIZE);
-      memcpy((uint8_t*)to+size2,back,INTERNAL_FLASH_READ_UNIT_SIZE);
-    }
-  }
   else
-    r = flash_read(fromaddr, (uint32_t *)to, size);
-
-  if(ESP_OK == r)
     return size;
-  else{
-    NODE_ERR( "ERROR in flash_read: r=%d at %08X sz %x\n", ( int )r, ( unsigned )fromaddr, size);
-    return 0;
-  }
 }
 
 
 int platform_flash_erase_sector( uint32_t sector_id )
 {
-  return flash_erase( sector_id ) == ESP_OK ? PLATFORM_OK : PLATFORM_ERR;
+  platform_wdt_feed();
+
+  uint32_t addr = sector_id * INTERNAL_FLASH_SECTOR_SIZE;
+  esp_err_t err =
+    esp_flash_erase_region(NULL, addr, INTERNAL_FLASH_SECTOR_SIZE);
+  if (err == ESP_OK)
+    return PLATFORM_OK;
+  else
+    return PLATFORM_ERR;
 }
 
diff --git a/components/platform/platform_partition.c b/components/platform/platform_partition.c
index 46cedca6..78fc2eff 100644
--- a/components/platform/platform_partition.c
+++ b/components/platform/platform_partition.c
@@ -36,7 +36,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include "esp_flash_partitions.h"
-#include "esp_spi_flash.h"
+#include "esp_flash.h"
 
 static inline bool possible_idx (uint8_t idx)
 {
@@ -50,8 +50,12 @@ bool platform_partition_info (uint8_t idx, platform_partition_t *info)
     return false;
 
   esp_partition_info_t pi;
-  esp_err_t err = spi_flash_read (
-    ESP_PARTITION_TABLE_OFFSET + idx * sizeof(pi), (uint32_t *)&pi, sizeof (pi));
+  esp_err_t err = esp_flash_read(
+    NULL,
+    (uint32_t *)&pi,
+    ESP_PARTITION_TABLE_OFFSET + idx * sizeof(pi),
+    sizeof (pi));
+
   if (err != ESP_OK)
     return false;
 
@@ -66,42 +70,3 @@ bool platform_partition_info (uint8_t idx, platform_partition_t *info)
 
   return true;
 }
-
-
-bool platform_partition_add (const platform_partition_t *info)
-{
-  esp_partition_info_t *part_table =
-    (esp_partition_info_t *)malloc(SPI_FLASH_SEC_SIZE);
-  if (!part_table)
-    return false;
-  esp_err_t err = spi_flash_read (
-    ESP_PARTITION_TABLE_OFFSET, (uint32_t *)part_table, SPI_FLASH_SEC_SIZE);
-  if (err != ESP_OK)
-    goto out;
-
-  uint8_t idx = 0;
-  for (; possible_idx (idx); ++idx)
-    if (part_table[idx].magic != ESP_PARTITION_MAGIC)
-      break;
-
-  if (possible_idx (idx))
-  {
-    esp_partition_info_t *slot = &part_table[idx];
-    slot->magic = ESP_PARTITION_MAGIC;
-    slot->type = info->type;
-    slot->subtype = info->subtype;
-    slot->pos.offset = info->offs;
-    slot->pos.size = info->size;
-    memcpy (slot->label, info->label, sizeof (slot->label));
-    slot->flags = 0;
-    err = spi_flash_erase_sector (
-      ESP_PARTITION_TABLE_OFFSET / SPI_FLASH_SEC_SIZE);
-    if (err == ESP_OK)
-      err = spi_flash_write (
-        ESP_PARTITION_TABLE_OFFSET, (uint32_t *)part_table, SPI_FLASH_SEC_SIZE);
-  }
-
-out:
-  free (part_table);
-  return err == ESP_OK;
-}
diff --git a/components/platform/platform_rmt.c b/components/platform/platform_rmt.c
index 1c568220..45560fa9 100644
--- a/components/platform/platform_rmt.c
+++ b/components/platform/platform_rmt.c
@@ -1,4 +1,3 @@
-
 #include <string.h>
 #include "platform_rmt.h"
 
diff --git a/components/platform/u8x8_nodemcu_hal.c b/components/platform/u8x8_nodemcu_hal.c
index e66b9477..2b51750d 100644
--- a/components/platform/u8x8_nodemcu_hal.c
+++ b/components/platform/u8x8_nodemcu_hal.c
@@ -3,7 +3,7 @@
 #include "driver/gpio.h"
 #include "driver/i2c.h"
 #include "driver/spi_master.h"
-#include "rom/ets_sys.h"
+#include "esp_rom_sys.h"
 #include "esp_heap_caps.h"
 #include <string.h>
 
@@ -38,27 +38,27 @@ uint8_t u8x8_gpio_and_delay_nodemcu(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int,
     break;
 
   case U8X8_MSG_DELAY_NANO:           // delay arg_int * 1 nano second
-    ets_delay_us( 1 );
+    esp_rom_delay_us( 1 );
     break;    
 
   case U8X8_MSG_DELAY_100NANO:        // delay arg_int * 100 nano seconds
     temp = arg_int * 100;
     temp /= 1000;
-    ets_delay_us( temp > 0 ? temp : 1 );
+    esp_rom_delay_us( temp > 0 ? temp : 1 );
     break;
 
   case U8X8_MSG_DELAY_10MICRO:        // delay arg_int * 10 micro seconds
-    ets_delay_us( arg_int * 10 );
+    esp_rom_delay_us( arg_int * 10 );
     break;
 
   case U8X8_MSG_DELAY_MILLI:          // delay arg_int * 1 milli second
-    ets_delay_us( arg_int * 1000 );
+    esp_rom_delay_us( arg_int * 1000 );
     break;
 
   case U8X8_MSG_DELAY_I2C:                // arg_int is the I2C speed in 100KHz, e.g. 4 = 400 KHz
     temp = 5000 / arg_int;                // arg_int=1: delay by 5us, arg_int = 4: delay by 1.25us
     temp /= 1000;
-    ets_delay_us( temp > 0 ? temp : 1 );
+    esp_rom_delay_us( temp > 0 ? temp : 1 );
     break;
 
   case U8X8_MSG_GPIO_D0:              // D0 or SPI clock pin: Output level in arg_int
diff --git a/components/platform/ucg_nodemcu_hal.c b/components/platform/ucg_nodemcu_hal.c
index 5cbded35..b8b407c3 100644
--- a/components/platform/ucg_nodemcu_hal.c
+++ b/components/platform/ucg_nodemcu_hal.c
@@ -87,7 +87,7 @@ int16_t ucg_com_nodemcu_hw_spi(ucg_t *ucg, int16_t msg, uint16_t arg, uint8_t *d
       break;
 
     case UCG_COM_MSG_DELAY:
-      ets_delay_us(arg);
+      esp_rom_delay_us(arg);
       break;
 
     case UCG_COM_MSG_CHANGE_RESET_LINE:
diff --git a/components/platform/wdt.c b/components/platform/wdt.c
index c815268e..4603011b 100644
--- a/components/platform/wdt.c
+++ b/components/platform/wdt.c
@@ -7,23 +7,20 @@
 #include "platform.h"
 #include "esp_task_wdt.h"
 
-#ifdef CONFIG_TASK_WDT
-static uint32_t task_wdt_timeout = CONFIG_TASK_WDT_TIMEOUT_S;
-
-static bool task_wdt_panic =
-#ifdef CONFIG_TASK_WDT_PANIC
-  true;
-#else
-false;
-#endif
-
-#endif
-
-
 int platform_wdt_feed( void )
 {
 #ifdef CONFIG_TASK_WDT
-  return esp_task_wdt_init(task_wdt_timeout, task_wdt_panic) == ESP_OK ? PLATFORM_OK : PLATFORM_ERR;
+  esp_task_wdt_config_t cfg = {
+    .timeout_ms = CONFIG_TASK_WDT_TIMEOUT_S * 1000,
+    .idle_core_mask = (uint32_t)-1,
+    .trigger_panic =
+#ifdef CONFIG_TASK_WDT_PANIC
+      true,
+#else
+      false,
+#endif
+  };
+  return esp_task_wdt_init(&cfg) == ESP_OK ? PLATFORM_OK : PLATFORM_ERR;
 #else
   return PLATFORM_OK;
 #endif
diff --git a/components/platform/ws2812.c b/components/platform/ws2812.c
index 4a4aace2..d00510cb 100644
--- a/components/platform/ws2812.c
+++ b/components/platform/ws2812.c
@@ -30,6 +30,8 @@
 #include "driver/gpio.h"
 #include "esp_log.h"
 #include "soc/periph_defs.h"
+#include "rom/gpio.h" // for gpio_matrix_out()
+#include "soc/gpio_periph.h"
 
 #undef WS2812_DEBUG
 
diff --git a/components/rtos_dbg/rtos_dbg.c b/components/rtos_dbg/rtos_dbg.c
index 4ca8f666..50aed4cb 100644
--- a/components/rtos_dbg/rtos_dbg.c
+++ b/components/rtos_dbg/rtos_dbg.c
@@ -13,7 +13,7 @@ extern struct {
 
 void rtos_dbg_task_print (const char *file, uint32_t line)
 {
-  printf(">>dbg: %s:%d in RTOS task \"%s\": prio %d\n",
+  printf(">>dbg: %s:%lu in RTOS task \"%s\": prio %u\n",
     file,
     line,
     pxCurrentTCB->pcTaskName,
@@ -30,6 +30,6 @@ void rtos_dbg_stack_print (const char *file, uint32_t line)
   for (;p < pxCurrentTCB->pxTopOfStack && *p == fill; ++p)
     ++nwords; 
 
-  printf(">>dbg: %s:%d in RTOS task \"%s\": %u stack untouched\n",
+  printf(">>dbg: %s:%lu in RTOS task \"%s\": %lu stack untouched\n",
     file, line, pxCurrentTCB->pcTaskName, nwords * 4);
 }
diff --git a/components/task/task.c b/components/task/task.c
index 0de0caab..12c0f77b 100644
--- a/components/task/task.c
+++ b/components/task/task.c
@@ -29,11 +29,11 @@ typedef struct
 /*
  * Private arrays to hold the 3 event task queues and the dispatch callbacks
  */
-static xQueueHandle task_Q[TASK_PRIORITY_COUNT];
+static QueueHandle_t task_Q[TASK_PRIORITY_COUNT];
 
 /* Rather than using a QueueSet (which requires queues to be empty when created)
  * we use a binary semaphore to unblock the pump whenever something is posted */
-static xSemaphoreHandle pending;
+static SemaphoreHandle_t pending;
 
 static task_callback_t *task_func;
 static int task_count;
diff --git a/docs/modules/adc.md b/docs/modules/adc.md
index 152e44e5..c719999c 100644
--- a/docs/modules/adc.md
+++ b/docs/modules/adc.md
@@ -60,22 +60,3 @@ the sampled value (number)
 ```lua
 val = adc.read(adc.ADC1, 0)
 ```
-
-## adc.read_hall_sensor()
-
-Read Hall sensor (GPIO36, GPIO39). We recommend using 12-bits width on ADC1.
-
-#### Syntax
-`adc.read_hall_sensor()`
-
-#### Parameters
-none
-
-#### Returns
-the sampled value (number)
-
-#### Example
-```lua
-val = adc.read_hall_sensor()
-```
-
diff --git a/docs/modules/eth.md b/docs/modules/eth.md
index 3802586c..1512af19 100644
--- a/docs/modules/eth.md
+++ b/docs/modules/eth.md
@@ -8,8 +8,10 @@ The eth module provides access to the ethernet PHY chip configuration.
 Your board must contain one of the PHY chips that are supported by ESP-IDF:
 
 - IP101
-- LAN8720
-- TLK110
+- RTL8201
+- LAN8720 (possibly others in the LAN87xx family)
+- DP83848
+- KSZ8001 / KSZ8021 / KSZ8031 / KSZ8041 / KSZ8051 / KSZ8061 / KSZ8081 / KSZ8091
 
 ## eth.get_mac()
 Get MAC address.
@@ -67,9 +69,11 @@ eth.init(cfg)
     - `phy` PHY chip model, one of
         - `PHY_DP83848`
         - `PHY_IP101`
-        - `PHY_KSZ8041`
-        - `PHY_KSZ8081`
-        - `PHY_LAN8720`
+        - `PHY_KSZ80XX`
+        - `PHY_KSZ8041` (deprecated, use `PHY_KSZ80XX` instead)
+        - `PHY_KSZ8081` (deprecated, use `PHY_KSZ80XX` instead)
+        - `PHY_LAN87XX`
+        - `PHY_LAN8720` (deprecated, use `PHY_LAN87XX` instead)
         - `PHY_RTL8201`
     - `power` power enable pin, optional
 
diff --git a/docs/modules/mqtt.md b/docs/modules/mqtt.md
index 8f325fc8..08f7ca2a 100644
--- a/docs/modules/mqtt.md
+++ b/docs/modules/mqtt.md
@@ -86,7 +86,7 @@ Closes connection to the broker.
 none
 
 #### Returns
-`true` on success, `false` otherwise
+`nil`
 
 ## mqtt.client:connect()
 
@@ -139,22 +139,6 @@ This is the description of how the `autoreconnect` functionality may (or may not
 > is considered a success if the client connects to a server and gets back a good response packet in response to its MQTT connection request.
 > This implies (for example) that the username and password are correct.
 
-#### Connection failure callback reason codes:
-
-| Constant | Value | Description |
-|----------|-------|-------------|
-|`mqtt.CONN_FAIL_SERVER_NOT_FOUND`|-5|There is no broker listening at the specified IP Address and Port|
-|`mqtt.CONN_FAIL_NOT_A_CONNACK_MSG`|-4|The response from the broker was not a CONNACK as required by the protocol|
-|`mqtt.CONN_FAIL_DNS`|-3|DNS Lookup failed|
-|`mqtt.CONN_FAIL_TIMEOUT_RECEIVING`|-2|Timeout waiting for a CONNACK from the broker|
-|`mqtt.CONN_FAIL_TIMEOUT_SENDING`|-1|Timeout trying to send the Connect message|
-|`mqtt.CONNACK_ACCEPTED`|0|No errors. _Note: This will not trigger a failure callback._|
-|`mqtt.CONNACK_REFUSED_PROTOCOL_VER`|1|The broker is not a 3.1.1 MQTT broker.|
-|`mqtt.CONNACK_REFUSED_ID_REJECTED`|2|The specified ClientID was rejected by the broker. (See `mqtt.Client()`)|
-|`mqtt.CONNACK_REFUSED_SERVER_UNAVAILABLE`|3|The server is unavailable.|
-|`mqtt.CONNACK_REFUSED_BAD_USER_OR_PASS`|4|The broker refused the specified username or password.|
-|`mqtt.CONNACK_REFUSED_NOT_AUTHORIZED`|5|The username is not authorized.|
-
 ## mqtt.client:lwt()
 
 Setup [Last Will and Testament](http://www.hivemq.com/blog/mqtt-essentials-part-9-last-will-and-testament) (optional). A broker will publish a message with qos = 0, retain = 0, data = "offline" to topic "/lwt" if client does not send keepalive packet.
diff --git a/docs/modules/sdmmc.md b/docs/modules/sdmmc.md
index 89e7728a..d6005998 100644
--- a/docs/modules/sdmmc.md
+++ b/docs/modules/sdmmc.md
@@ -77,7 +77,7 @@ Initialize the SDMMC and probe the attached SD card.
         - `sdmmc.W8BIT`, not supported yet
 
 #### Parameters SD SPI Mode
-- `slot` SD SPI slot, one of `sdmmc.HSPI` or `sdmmc.VSPI`
+- `slot` SD SPI slot, one of `sdmmc.SPI2` or `sdmmc.SPI3` (on ESP32 the names`sdmmc.HSPI` or `sdmmc.VSPI` are still available, but deprecated)
 - `cfg` mandatory table containing slot configuration:
     - `sck_pin` SPI SCK pin, mandatory
     - `mosi_pin`, SPI MOSI pin, mandatory
@@ -128,12 +128,10 @@ Table containing the card's OCR, CID, CSD, SCR, and RCA with elements:
 Mount filesystem on SD card.
 
 #### Syntax
-`card:mount(ldrv[, partition])`
+`card:mount(ldrv)`
 
 #### Parameters
 - `ldrv` name of logical drive, "/SD0", "/SD1", etc.
-- `partition` the partition number, default is 0, meaning the first available
-   FAT partition.
 
 #### Returns
 `true` if successful, `false` otherwise
diff --git a/docs/modules/spi.md b/docs/modules/spi.md
index caa2fd92..7404cfe4 100644
--- a/docs/modules/spi.md
+++ b/docs/modules/spi.md
@@ -6,6 +6,8 @@
 # SPI Bus
 The ESP32 contains 4 SPI bus hosts called `SPI`, `SPI1`, `HSPI`, and `VSPI`. `SPI` is locked to flash communication and is not available for the application. `SPI1` is currently also tied to flash support, but might be available in the future. Applications can currently only use the `HSPI` and `VSPI` hosts.
 
+On later models in the ESP32 series, the SPI hosts are simply referred to by number, and are available here as `spi.SPI1`, `spi.SPI2` and (if present) `spi.SPI3`.
+
 The host signals can be mapped to any suitable GPIO pins.
 
 !!! note
diff --git a/docs/modules/uart.md b/docs/modules/uart.md
index d8febdbd..c31905a4 100644
--- a/docs/modules/uart.md
+++ b/docs/modules/uart.md
@@ -102,7 +102,7 @@ uart.setup(0, 9600, 8, uart.PARITY_NONE, uart.STOPBITS_1, 1)
 ```
 
 ```lua
-uart.setup(2, 115200, 8, uart.PARITY_NONE, uart.STOPBITS_1, {tx = 16, rx = 17})
+uart.setup(2, 115200, 8, uart.PARITY_NONE, uart.STOPBITS_1, {tx = 17, rx = 16})
 ```
 
 ## uart.getconfig()
diff --git a/requirements.txt b/requirements.txt
index a8747b68..ce3a0c1d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1 @@
 ziglang>=0.8.0
-cryptography>=2.1.4,<35.0.0
diff --git a/sdk/esp32-esp-idf b/sdk/esp32-esp-idf
index 6407ecb3..5181de8a 160000
--- a/sdk/esp32-esp-idf
+++ b/sdk/esp32-esp-idf
@@ -1 +1 @@
-Subproject commit 6407ecb3f8d2cc07c4c230e7e64f2046af5c86f7
+Subproject commit 5181de8ac5ec5e18f04f634da8ce173b7ef5ab73