343 lines
10 KiB
C
343 lines
10 KiB
C
/*guys, srsly, turn on warnings in the makefile*/
|
|
#if defined(__GNUC__)
|
|
#pragma GCC diagnostic warning "-Wall"
|
|
#pragma GCC diagnostic warning "-Wextra"
|
|
#pragma GCC diagnostic ignored "-Wunused-parameter"
|
|
#endif
|
|
|
|
/* See docs/modules/tmr.md for documentaiton o current API */
|
|
|
|
#include "module.h"
|
|
#include "lauxlib.h"
|
|
#include "platform.h"
|
|
#include <stdint.h>
|
|
#include "user_interface.h"
|
|
#include "pm/swtimer.h"
|
|
|
|
#define TIMER_MODE_SINGLE 0
|
|
#define TIMER_MODE_AUTO 1
|
|
#define TIMER_MODE_SEMI 2
|
|
#define TIMER_MODE_OFF 3
|
|
#define TIMER_IDLE_FLAG (1<<7)
|
|
|
|
#define STRINGIFY_VAL(x) #x
|
|
#define STRINGIFY(x) STRINGIFY_VAL(x)
|
|
|
|
// assuming system_timer_reinit() has *not* been called
|
|
#define MAX_TIMEOUT_DEF 0x68D7A3 // SDK specfied limit
|
|
|
|
static const uint32 MAX_TIMEOUT=MAX_TIMEOUT_DEF;
|
|
static const char* MAX_TIMEOUT_ERR_STR = "Range: 1-"STRINGIFY(MAX_TIMEOUT_DEF);
|
|
|
|
typedef struct{
|
|
os_timer_t os;
|
|
sint32_t lua_ref; /* Reference to registered callback function */
|
|
sint32_t self_ref; /* Reference to UD registered slot */
|
|
uint32_t interval;
|
|
uint8_t mode;
|
|
} tmr_t;
|
|
|
|
// The previous implementation extended the rtc counter to 64 bits, and then
|
|
// applied rtc2sec with the current calibration value to that 64 bit value.
|
|
// This means that *ALL* clock ticks since bootup are counted with the
|
|
// *current* clock period. In extreme cases (long uptime, sudden temperature
|
|
// change), this could result in tmr.time() going backwards....
|
|
//
|
|
// This implementation instead applies rtc2usec to short time intervals only
|
|
// (the longest being around 1 second), and then accumulates the resulting
|
|
// microseconds in a 64 bit counter. That's guaranteed to be monotonic, and
|
|
// should be a lot closer to representing an actual uptime.
|
|
|
|
static uint32_t rtc_time_cali=0;
|
|
static uint32_t last_rtc_time=0;
|
|
static uint64_t last_rtc_time_us=0;
|
|
|
|
static sint32_t soft_watchdog = -1;
|
|
static os_timer_t rtc_timer;
|
|
|
|
static void alarm_timer_common(void* arg){
|
|
tmr_t *tmr = (tmr_t *) arg;
|
|
if(tmr->lua_ref > 0) {
|
|
lua_State* L = lua_getstate();
|
|
lua_rawgeti(L, LUA_REGISTRYINDEX, tmr->lua_ref);
|
|
lua_rawgeti(L, LUA_REGISTRYINDEX, tmr->self_ref);
|
|
if (tmr->mode != TIMER_MODE_AUTO) {
|
|
if(tmr->mode == TIMER_MODE_SINGLE) {
|
|
luaL_unref2(L, LUA_REGISTRYINDEX, tmr->lua_ref);
|
|
luaL_unref2(L, LUA_REGISTRYINDEX, tmr->self_ref);
|
|
tmr->mode = TIMER_MODE_OFF;
|
|
} else if (tmr->mode == TIMER_MODE_SEMI) {
|
|
tmr->mode |= TIMER_IDLE_FLAG;
|
|
luaL_unref2(L, LUA_REGISTRYINDEX, tmr->self_ref);
|
|
}
|
|
}
|
|
luaL_pcallx(L, 1, 0);
|
|
}
|
|
}
|
|
|
|
// Lua: tmr.delay( us )
|
|
static int tmr_delay( lua_State* L ){
|
|
sint32_t us = luaL_checkinteger(L, 1);
|
|
luaL_argcheck(L, us>0, 1, "wrong arg range");
|
|
while(us > 0){
|
|
os_delay_us(us >= 1000000 ? 1000000 : us);
|
|
system_soft_wdt_feed ();
|
|
us -= 1000000;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Lua: tmr.now() , return system timer in us
|
|
static int tmr_now(lua_State* L){
|
|
lua_pushinteger(L, (uint32_t) (0x7FFFFFFF & system_get_time()));
|
|
return 1;
|
|
}
|
|
|
|
// Lua: tmr.ccount() , returns CCOUNT register
|
|
static int tmr_ccount(lua_State* L){
|
|
lua_pushinteger(L, CCOUNT_REG);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
** Health warning: this is also called DIRECTLY from alarm() which assumes that the Lua
|
|
** stack is preserved for the following start(), so the stack MUST be balanced here.
|
|
*/
|
|
|
|
// Lua: t:register( interval, mode, function )
|
|
static int tmr_register(lua_State* L) {
|
|
tmr_t *tmr = (tmr_t *) luaL_checkudata(L, 1, "tmr.timer");
|
|
uint32_t interval = luaL_checkinteger(L, 2);
|
|
uint8_t mode = luaL_checkinteger(L, 3);
|
|
|
|
luaL_argcheck(L, (interval > 0 && interval <= MAX_TIMEOUT), 2, MAX_TIMEOUT_ERR_STR);
|
|
luaL_argcheck(L, (mode == TIMER_MODE_SINGLE || mode == TIMER_MODE_SEMI || mode == TIMER_MODE_AUTO), 3, "Invalid mode");
|
|
luaL_argcheck(L, lua_isfunction(L, 4), 4, "Must be function");
|
|
|
|
//get the lua function reference
|
|
lua_pushvalue(L, 4);
|
|
if(!(tmr->mode & TIMER_IDLE_FLAG) && tmr->mode != TIMER_MODE_OFF)
|
|
os_timer_disarm(&tmr->os);
|
|
luaL_reref(L, LUA_REGISTRYINDEX, &tmr->lua_ref);
|
|
tmr->mode = mode|TIMER_IDLE_FLAG;
|
|
tmr->interval = interval;
|
|
os_timer_setfn(&tmr->os, alarm_timer_common, tmr);
|
|
return 0;
|
|
}
|
|
|
|
// Lua: t:start()
|
|
static int tmr_start(lua_State* L){
|
|
tmr_t *tmr = (tmr_t *) luaL_checkudata(L, 1, "tmr.timer");
|
|
int idle = tmr->mode & TIMER_IDLE_FLAG;
|
|
|
|
lua_settop(L, 1); /* ignore any args after the userdata */
|
|
if (tmr->self_ref == LUA_NOREF)
|
|
tmr->self_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
|
|
if(idle) {
|
|
tmr->mode &= ~TIMER_IDLE_FLAG;
|
|
os_timer_arm(&tmr->os, tmr->interval, tmr->mode==TIMER_MODE_AUTO);
|
|
}
|
|
lua_pushboolean(L, !idle); /* false if the timer is not idle */
|
|
return 1;
|
|
}
|
|
|
|
// Lua: t:alarm( interval, repeat, function )
|
|
static int tmr_alarm(lua_State* L){
|
|
tmr_register(L);
|
|
return tmr_start(L);
|
|
}
|
|
|
|
// Lua: t:stop()
|
|
static int tmr_stop(lua_State* L){
|
|
tmr_t *tmr = (tmr_t *) luaL_checkudata(L, 1, "tmr.timer");
|
|
int idle = tmr->mode == TIMER_MODE_OFF || (tmr->mode & TIMER_IDLE_FLAG);
|
|
luaL_unref2(L, LUA_REGISTRYINDEX, tmr->self_ref);
|
|
|
|
if(!idle)
|
|
os_timer_disarm(&tmr->os);
|
|
tmr->mode |= TIMER_IDLE_FLAG;
|
|
lua_pushboolean(L, !idle); /* return false if the timer is idle (or not registered) */
|
|
return 1;
|
|
}
|
|
|
|
#ifdef TIMER_SUSPEND_ENABLE
|
|
|
|
#define TMR_SUSPEND_REMOVED_MSG "This feature has been removed, we apologize for any inconvenience this may have caused."
|
|
#define tmr_suspend tmr_suspend_removed
|
|
#define tmr_resume tmr_suspend_removed
|
|
#define tmr_suspend_all tmr_suspend_removed
|
|
#define tmr_resume_all tmr_suspend_removed
|
|
static int tmr_suspend_removed(lua_State* L){
|
|
return luaL_error(L, TMR_SUSPEND_REMOVED_MSG);
|
|
}
|
|
#endif
|
|
|
|
// Lua: t:unregister()
|
|
static int tmr_unregister(lua_State* L){
|
|
tmr_t *tmr = (tmr_t *) luaL_checkudata(L, 1, "tmr.timer");
|
|
luaL_unref2(L, LUA_REGISTRYINDEX, tmr->self_ref);
|
|
luaL_unref2(L, LUA_REGISTRYINDEX, tmr->lua_ref);
|
|
if(!(tmr->mode & TIMER_IDLE_FLAG) && tmr->mode != TIMER_MODE_OFF)
|
|
os_timer_disarm(&tmr->os);
|
|
tmr->mode = TIMER_MODE_OFF;
|
|
return 0;
|
|
}
|
|
|
|
// Lua: t:interval( interval )
|
|
static int tmr_interval(lua_State* L){
|
|
tmr_t *tmr = (tmr_t *) luaL_checkudata(L, 1, "tmr.timer");
|
|
uint32_t interval = luaL_checkinteger(L, 2);
|
|
luaL_argcheck(L, (interval > 0 && interval <= MAX_TIMEOUT), 2, MAX_TIMEOUT_ERR_STR);
|
|
if(tmr->mode != TIMER_MODE_OFF){
|
|
tmr->interval = interval;
|
|
if(!(tmr->mode&TIMER_IDLE_FLAG)){
|
|
os_timer_disarm(&tmr->os);
|
|
os_timer_arm(&tmr->os, tmr->interval, tmr->mode==TIMER_MODE_AUTO);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Lua: t:state()
|
|
static int tmr_state(lua_State* L){
|
|
tmr_t *tmr = (tmr_t *) luaL_checkudata(L, 1, "tmr.timer");
|
|
if(tmr->mode == TIMER_MODE_OFF){
|
|
lua_pushnil(L);
|
|
return 1;
|
|
}
|
|
|
|
lua_pushboolean(L, (tmr->mode & TIMER_IDLE_FLAG) == 0);
|
|
lua_pushinteger(L, tmr->mode & (~TIMER_IDLE_FLAG));
|
|
return 2;
|
|
}
|
|
|
|
// Lua: tmr.wdclr()
|
|
static int tmr_wdclr( lua_State* L ){
|
|
system_soft_wdt_feed ();
|
|
return 0;
|
|
}
|
|
|
|
// The on ESP8266 system_rtc_clock_cali_proc() returns a fixed point value
|
|
// (12 bit fraction part), giving how many rtc clock ticks represent 1us.
|
|
// The high 64 bits of the uint64_t multiplication are not needed)
|
|
static uint32_t rtc2usec(uint64_t rtc){
|
|
return (rtc*rtc_time_cali)>>12;
|
|
}
|
|
|
|
// This returns the number of microseconds uptime. Note that it relies on
|
|
// the rtc clock, which is notoriously temperature dependent
|
|
inline static uint64_t rtc_timer_update(bool do_calibration){
|
|
if (do_calibration || rtc_time_cali==0)
|
|
rtc_time_cali=system_rtc_clock_cali_proc();
|
|
|
|
uint32_t current = system_get_rtc_time();
|
|
uint32_t since_last=current-last_rtc_time; // This will transparently deal with wraparound
|
|
uint32_t us_since_last=rtc2usec(since_last);
|
|
uint64_t now=last_rtc_time_us+us_since_last;
|
|
|
|
// Only update if at least 100ms has passed since we last updated.
|
|
// This prevents the rounding errors in rtc2usec from accumulating
|
|
if (us_since_last>=100000){
|
|
last_rtc_time=current;
|
|
last_rtc_time_us=now;
|
|
}
|
|
return now;
|
|
}
|
|
|
|
void rtc_callback(void *arg){
|
|
rtc_timer_update(true);
|
|
if(soft_watchdog > 0){
|
|
soft_watchdog--;
|
|
if(soft_watchdog == 0)
|
|
system_restart();
|
|
}
|
|
}
|
|
|
|
// Lua: tmr.time() , return rtc time in second
|
|
static int tmr_time( lua_State* L ){
|
|
uint64_t us=rtc_timer_update(false);
|
|
lua_pushinteger(L, us/1000000);
|
|
return 1;
|
|
}
|
|
|
|
// Lua: tmr.softwd( value )
|
|
static int tmr_softwd( lua_State* L ){
|
|
int t = luaL_checkinteger(L, 1);
|
|
luaL_argcheck(L, t>0 , 2, "invalid time");
|
|
soft_watchdog = t;
|
|
return 0;
|
|
}
|
|
|
|
// Lua: tmr.create()
|
|
static int tmr_create( lua_State *L ) {
|
|
tmr_t *ud = (tmr_t *)lua_newuserdata(L, sizeof(*ud));
|
|
luaL_getmetatable(L, "tmr.timer");
|
|
lua_setmetatable(L, -2);
|
|
*ud = (tmr_t) {{0}, LUA_NOREF, LUA_NOREF, 0, TIMER_MODE_OFF};
|
|
return 1;
|
|
}
|
|
|
|
|
|
// Module function map
|
|
|
|
LROT_BEGIN(tmr_dyn, NULL, LROT_MASK_GC_INDEX)
|
|
LROT_FUNCENTRY( __gc, tmr_unregister )
|
|
LROT_TABENTRY( __index, tmr_dyn )
|
|
LROT_FUNCENTRY( register, tmr_register )
|
|
LROT_FUNCENTRY( alarm, tmr_alarm )
|
|
LROT_FUNCENTRY( start, tmr_start )
|
|
LROT_FUNCENTRY( stop, tmr_stop )
|
|
LROT_FUNCENTRY( unregister, tmr_unregister )
|
|
LROT_FUNCENTRY( state, tmr_state )
|
|
LROT_FUNCENTRY( interval, tmr_interval )
|
|
#ifdef TIMER_SUSPEND_ENABLE
|
|
LROT_FUNCENTRY( suspend, tmr_suspend )
|
|
LROT_FUNCENTRY( resume, tmr_resume )
|
|
#endif
|
|
LROT_END(tmr_dyn, NULL, LROT_MASK_GC_INDEX)
|
|
|
|
|
|
LROT_BEGIN(tmr, NULL, 0)
|
|
LROT_FUNCENTRY( delay, tmr_delay )
|
|
LROT_FUNCENTRY( now, tmr_now )
|
|
LROT_FUNCENTRY( wdclr, tmr_wdclr )
|
|
LROT_FUNCENTRY( softwd, tmr_softwd )
|
|
LROT_FUNCENTRY( time, tmr_time )
|
|
LROT_FUNCENTRY( ccount, tmr_ccount )
|
|
#ifdef TIMER_SUSPEND_ENABLE
|
|
LROT_FUNCENTRY( suspend_all, tmr_suspend_all )
|
|
LROT_FUNCENTRY( resume_all, tmr_resume_all )
|
|
#endif
|
|
LROT_FUNCENTRY( create, tmr_create )
|
|
LROT_NUMENTRY( ALARM_SINGLE, TIMER_MODE_SINGLE )
|
|
LROT_NUMENTRY( ALARM_SEMI, TIMER_MODE_SEMI )
|
|
LROT_NUMENTRY( ALARM_AUTO, TIMER_MODE_AUTO )
|
|
LROT_END(tmr, NULL, 0)
|
|
|
|
|
|
#include "pm/swtimer.h"
|
|
int luaopen_tmr( lua_State *L ){
|
|
luaL_rometatable(L, "tmr.timer", LROT_TABLEREF(tmr_dyn));
|
|
|
|
last_rtc_time=system_get_rtc_time(); // Right now is time 0
|
|
last_rtc_time_us=0;
|
|
|
|
os_timer_disarm(&rtc_timer);
|
|
os_timer_setfn(&rtc_timer, rtc_callback, NULL);
|
|
os_timer_arm(&rtc_timer, 1000, 1);
|
|
|
|
// The function rtc_callback calls the a function that calibrates the SoftRTC
|
|
// for drift in the esp8266's clock. My guess: after the duration of light_sleep
|
|
// there is bound to be some drift in the clock, so a calibration is due.
|
|
SWTIMER_REG_CB(rtc_callback, SWTIMER_RESUME);
|
|
|
|
// The function alarm_timer_common handles timers created by the developer via
|
|
// tmr.create(). No reason not to resume the timers, so resume em'.
|
|
SWTIMER_REG_CB(alarm_timer_common, SWTIMER_RESUME);
|
|
|
|
return 0;
|
|
}
|
|
|
|
NODEMCU_MODULE(TMR, "tmr", tmr, luaopen_tmr);
|