From a8622795a7ccbed0045eb8eb359c71eeea43984b Mon Sep 17 00:00:00 2001
From: Mike Wen <nodeusb@gmail.com>
Date: Thu, 11 Jun 2015 18:05:18 -0400
Subject: [PATCH] add 433MHz transmission

---
 app/modules/rc.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 app/modules/rc.c

diff --git a/app/modules/rc.c b/app/modules/rc.c
new file mode 100644
index 00000000..41ad6d3f
--- /dev/null
+++ b/app/modules/rc.c
@@ -0,0 +1,96 @@
+#include "lualib.h"
+#include "lauxlib.h"
+#include "platform.h"
+#include "auxmods.h"
+#include "lrotable.h"
+//#include "driver/easygpio.h"
+//static Ping_Data pingA;
+#define defPulseLen 185
+#define defProtocol 1
+#define defRepeat   10
+#define defBits     24
+void transmit(int pin, int pulseLen, int nHighPulses, int nLowPulses) {
+  platform_gpio_write(pin, 1);
+  os_delay_us(pulseLen*nHighPulses);
+  platform_gpio_write(pin, 0);
+  os_delay_us(pulseLen*nLowPulses);
+}
+//rc.send(0,267715,24,185,1)    --GPIO, code, bits, pulselen, protocol
+static int ICACHE_FLASH_ATTR rc_send(lua_State* L) {
+  const uint8_t pin = luaL_checkinteger(L, 1);
+  platform_gpio_mode(pin, PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT);
+  //platform_gpio_mode(pin, PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_PULLUP);
+  //platform_gpio_mode(pin, PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_PULLDOWN);
+  platform_gpio_write(pin, 0);
+  long code = luaL_checklong(L, 2);
+  //const uint8_t bits = luaL_checkinteger(L, 3);
+  uint8_t bits = luaL_checkinteger(L, 3);
+  const uint8_t pulseLen = luaL_checkinteger(L, 4);
+  const uint8_t Protocol = luaL_checkinteger(L, 5);
+  const uint8_t repeat = luaL_checkinteger(L, 6);
+  NODE_ERR("pulseLen:%d\n",pulseLen);
+  NODE_ERR("Protocol:%d\n",Protocol);
+  NODE_ERR("repeat:%d\n",repeat);
+  NODE_ERR("send:");
+  int c,k,nRepeat;
+  bits = bits-1;
+  for (c = bits; c >= 0; c--)
+  {
+    k = code >> c;
+    if (k & 1)
+      NODE_ERR("1");
+    else
+      NODE_ERR("0");
+  }
+  NODE_ERR("\n");
+  for (nRepeat=0; nRepeat<repeat; nRepeat++) {
+    for (c = bits; c >= 0; c--)
+    {
+      k = code >> c;
+      if (k & 1){
+        //send1
+        if(Protocol==1){
+          transmit(pin,pulseLen,3,1);
+        }else if(Protocol==2){
+          transmit(pin,pulseLen,2,1);
+        }else if(Protocol==3){
+          transmit(pin,pulseLen,9,6);
+        }
+      }
+      else{
+        //send0
+        if(Protocol==1){
+          transmit(pin,pulseLen,1,3);
+        }else if(Protocol==2){
+          transmit(pin,pulseLen,1,2);
+        }else if(Protocol==3){
+          transmit(pin,pulseLen,4,11);
+        }
+      }
+    }
+    //sendSync();
+    if(Protocol==1){
+      transmit(pin,pulseLen,1,31);
+    }else if(Protocol==2){
+      transmit(pin,pulseLen,1,10);
+    }else if(Protocol==3){
+      transmit(pin,pulseLen,1,71);
+    }
+  }
+
+  return 1;
+}
+#define MIN_OPT_LEVEL 2
+#include "lrodefs.h"
+const LUA_REG_TYPE rc_map[] =
+{
+  { LSTRKEY( "send" ), LFUNCVAL( rc_send )},
+  { LNILKEY, LNILVAL}
+};
+
+//LUALIB_API int luaopen_ultra(lua_State *L) {
+LUALIB_API int luaopen_rc(lua_State *L) {
+  // TODO: Make sure that the GPIO system is initialized
+  LREGISTER(L, "rc", rc_map);
+  return 1;
+}