359 lines
10 KiB
C
Executable File
359 lines
10 KiB
C
Executable File
/*guys, srsly, turn on warnings in the makefile*/
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#if defined(__GNUC__)
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#pragma GCC diagnostic warning "-Wall"
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#pragma GCC diagnostic warning "-Wextra"
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#pragma GCC diagnostic ignored "-Wunused-parameter"
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#endif
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/*-------------------------------------
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NEW TIMER API
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---------------------------------------
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tmr.wdclr() -- not changed
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tmr.now() -- not changed
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tmr.time() -- not changed
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tmr.delay() -- not changed
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tmr.alarm() -- not changed
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tmr.stop() -- changed, see below. use tmr.unregister for old functionality
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tmr.register(id, interval, mode, function)
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bind function with timer and set the interval in ms
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the mode can be:
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tmr.ALARM_SINGLE for a single run alarm
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tmr.ALARM_SEMI for a multiple single run alarm
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tmr.ALARM_AUTO for a repating alarm
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tmr.register does NOT start the timer
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tmr.alarm is a tmr.register & tmr.start macro
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tmr.unregister(id)
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stop alarm, unbind function and clean up memory
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not needed for ALARM_SINGLE, as it unregisters itself
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tmr.start(id)
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ret: bool
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start a alarm, returns true on success
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tmr.stop(id)
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ret: bool
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stops a alarm, returns true on success
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this call dose not free any memory, to do so use tmr.unregister
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stopped alarms can be started with start
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tmr.interval(id, interval)
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set alarm interval, running alarm will be restarted
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tmr.state(id)
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ret: (bool, int) or nil
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returns alarm status (true=started/false=stopped) and mode
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nil if timer is unregistered
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tmr.softwd(int)
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set a negative value to stop the timer
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any other value starts the timer, when the
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countdown reaches zero, the device restarts
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the timer units are seconds
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*/
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#define MIN_OPT_LEVEL 2
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#include "lualib.h"
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#include "lauxlib.h"
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#include "platform.h"
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#include "auxmods.h"
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#include "lrotable.h"
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#include "lrodefs.h"
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#include "c_types.h"
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#define TIMER_MODE_OFF 3
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#define TIMER_MODE_SINGLE 0
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#define TIMER_MODE_SEMI 2
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#define TIMER_MODE_AUTO 1
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#define TIMER_IDLE_FLAG (1<<7)
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//well, the following are my assumptions
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//why, oh why is there no good documentation
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//chinese companies should learn from Atmel
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extern void ets_timer_arm_new(os_timer_t* t, uint32_t milliseconds, uint32_t repeat_flag, uint32_t isMstimer);
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extern void ets_timer_disarm(os_timer_t* t);
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extern void ets_timer_setfn(os_timer_t* t, os_timer_func_t *f, void *arg);
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extern void ets_delay_us(uint32_t us);
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extern uint32_t system_get_time();
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extern uint32_t platform_tmr_exists(uint32_t t);
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extern uint32_t system_rtc_clock_cali_proc();
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extern uint32_t system_get_rtc_time();
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extern void system_restart();
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//in fact lua_State is constant, it's pointless to pass it around
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//but hey, whatever, I'll just pass it, still we waste 28B here
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typedef struct{
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os_timer_t os;
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lua_State* L;
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sint32_t lua_ref;
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uint32_t interval;
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uint8_t mode;
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}timer_struct_t;
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typedef timer_struct_t* timer_t;
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//everybody just love unions! riiiiight?
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static union {
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uint64_t block;
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uint32_t part[2];
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} rtc_time;
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static sint32_t soft_watchdog = -1;
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static timer_struct_t alarm_timers[NUM_TMR];
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static os_timer_t rtc_timer;
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static void alarm_timer_common(void* arg){
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timer_t tmr = &alarm_timers[(uint32_t)arg];
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if(tmr->lua_ref == LUA_NOREF || tmr->L == NULL)
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return;
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lua_rawgeti(tmr->L, LUA_REGISTRYINDEX, tmr->lua_ref);
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//if the timer was set to single run we clean up after it
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if(tmr->mode == TIMER_MODE_SINGLE){
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luaL_unref(tmr->L, LUA_REGISTRYINDEX, tmr->lua_ref);
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tmr->lua_ref = LUA_NOREF;
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tmr->mode = TIMER_MODE_OFF;
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}else if(tmr->mode == TIMER_MODE_SEMI){
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tmr->mode |= TIMER_IDLE_FLAG;
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}
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lua_call(tmr->L, 0, 0);
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}
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// Lua: tmr.delay( us )
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static int tmr_delay( lua_State* L ){
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sint32_t us = luaL_checkinteger(L, 1);
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if(us <= 0)
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return luaL_error(L, "wrong arg range");
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while(us >= 1000000){
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us -= 1000000;
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os_delay_us(1000000);
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system_soft_wdt_feed ();
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}
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if(us>0){
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os_delay_us(us);
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system_soft_wdt_feed ();
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}
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return 0;
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}
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// Lua: tmr.now() , return system timer in us
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static int tmr_now(lua_State* L){
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uint32_t now = 0x7FFFFFFF & system_get_time();
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lua_pushinteger(L, now);
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return 1;
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}
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// Lua: tmr.register( id, interval, mode, function )
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static int tmr_register(lua_State* L){
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uint32_t id = luaL_checkinteger(L, 1);
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MOD_CHECK_ID(tmr, id);
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sint32_t interval = luaL_checkinteger(L, 2);
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uint8_t mode = luaL_checkinteger(L, 3);
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//validate arguments
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uint8_t args_valid = interval <= 0
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|| (mode != TIMER_MODE_SINGLE && mode != TIMER_MODE_SEMI && mode != TIMER_MODE_AUTO)
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|| (lua_type(L, 4) != LUA_TFUNCTION && lua_type(L, 4) != LUA_TLIGHTFUNCTION);
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if(args_valid)
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return luaL_error(L, "wrong arg range");
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//get the lua function reference
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lua_pushvalue(L, 4);
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sint32_t ref = luaL_ref(L, LUA_REGISTRYINDEX);
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timer_t tmr = &alarm_timers[id];
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if(!(tmr->mode & TIMER_IDLE_FLAG) && tmr->mode != TIMER_MODE_OFF)
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ets_timer_disarm(&tmr->os);
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//there was a bug in this part, the second part of the following condition was missing
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if(tmr->lua_ref != LUA_NOREF && tmr->lua_ref != ref)
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luaL_unref(L, LUA_REGISTRYINDEX, tmr->lua_ref);
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tmr->lua_ref = ref;
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tmr->mode = mode|TIMER_IDLE_FLAG;
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tmr->interval = interval;
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tmr->L = L;
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ets_timer_setfn(&tmr->os, alarm_timer_common, (void*)id);
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return 0;
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}
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// Lua: tmr.start( id )
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static int tmr_start(lua_State* L){
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uint8_t id = luaL_checkinteger(L, 1);
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MOD_CHECK_ID(tmr,id);
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timer_t tmr = &alarm_timers[id];
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//we return false if the timer is not idle
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if(!(tmr->mode&TIMER_IDLE_FLAG)){
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lua_pushboolean(L, 0);
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}else{
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tmr->mode &= ~TIMER_IDLE_FLAG;
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ets_timer_arm_new(&tmr->os, tmr->interval, tmr->mode==TIMER_MODE_AUTO, 1);
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lua_pushboolean(L, 1);
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}
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return 1;
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}
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// Lua: tmr.alarm( id, interval, repeat, function )
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static int tmr_alarm(lua_State* L){
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tmr_register(L);
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return tmr_start(L);
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}
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// Lua: tmr.stop( id )
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static int tmr_stop(lua_State* L){
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uint8_t id = luaL_checkinteger(L, 1);
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MOD_CHECK_ID(tmr,id);
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timer_t tmr = &alarm_timers[id];
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//we return false if the timer is idle (of not registered)
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if(!(tmr->mode & TIMER_IDLE_FLAG) && tmr->mode != TIMER_MODE_OFF){
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tmr->mode |= TIMER_IDLE_FLAG;
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ets_timer_disarm(&tmr->os);
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lua_pushboolean(L, 1);
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}else{
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lua_pushboolean(L, 0);
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}
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return 1;
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}
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// Lua: tmr.unregister( id )
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static int tmr_unregister(lua_State* L){
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uint8_t id = luaL_checkinteger(L, 1);
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MOD_CHECK_ID(tmr,id);
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timer_t tmr = &alarm_timers[id];
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if(!(tmr->mode & TIMER_IDLE_FLAG) && tmr->mode != TIMER_MODE_OFF)
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ets_timer_disarm(&tmr->os);
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if(tmr->lua_ref != LUA_NOREF)
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luaL_unref(L, LUA_REGISTRYINDEX, tmr->lua_ref);
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tmr->lua_ref = LUA_NOREF;
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tmr->mode = TIMER_MODE_OFF;
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return 0;
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}
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// Lua: tmr.interval( id, interval )
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static int tmr_interval(lua_State* L){
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uint8_t id = luaL_checkinteger(L, 1);
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MOD_CHECK_ID(tmr,id);
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timer_t tmr = &alarm_timers[id];
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sint32_t interval = luaL_checkinteger(L, 2);
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if(interval <= 0)
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return luaL_error(L, "wrong arg range");
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if(tmr->mode != TIMER_MODE_OFF){
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tmr->interval = interval;
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if(!(tmr->mode&TIMER_IDLE_FLAG)){
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ets_timer_disarm(&tmr->os);
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ets_timer_arm_new(&tmr->os, tmr->interval, tmr->mode==TIMER_MODE_AUTO, 1);
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}
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}
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return 0;
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}
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// Lua: tmr.state( id )
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static int tmr_state(lua_State* L){
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uint8_t id = luaL_checkinteger(L, 1);
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MOD_CHECK_ID(tmr,id);
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timer_t tmr = &alarm_timers[id];
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if(tmr->mode == TIMER_MODE_OFF){
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lua_pushnil(L);
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return 1;
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}
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lua_pushboolean(L, (tmr->mode&TIMER_IDLE_FLAG)==0);
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lua_pushinteger(L, tmr->mode&(~TIMER_IDLE_FLAG));
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return 2;
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}
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/*I left the led comments 'couse I don't know
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why they are here*/
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// extern void update_key_led();
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// Lua: tmr.wdclr()
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static int tmr_wdclr( lua_State* L ){
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system_soft_wdt_feed ();
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// update_key_led();
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return 0;
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}
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//system_rtc_clock_cali_proc() returns
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//a fixed point value (12 bit fraction part)
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//it tells how many rtc clock ticks represent 1us.
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//the high 64 bits of the uint64_t multiplication
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//are unnedded (I did the math)
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static uint32_t rtc2sec(uint64_t rtc){
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uint64_t aku = system_rtc_clock_cali_proc();
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aku *= rtc;
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return (aku>>12)/1000000;
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}
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//the following function workes, I just wrote it and didn't use it.
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/*static uint64_t sec2rtc(uint32_t sec){
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uint64_t aku = (1<<20)/system_rtc_clock_cali_proc();
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aku *= sec;
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return (aku>>8)*1000000;
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}*/
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inline static void rtc_timer_update(){
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uint32_t current = system_get_rtc_time();
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if(rtc_time.part[0] > current) //overflow check
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rtc_time.part[1]++;
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rtc_time.part[0] = current;
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}
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void rtc_callback(void *arg){
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rtc_timer_update();
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if(soft_watchdog > 0){
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soft_watchdog--;
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if(soft_watchdog == 0)
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system_restart();
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}
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}
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// Lua: tmr.time() , return rtc time in second
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static int tmr_time( lua_State* L ){
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rtc_timer_update();
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lua_pushinteger(L, rtc2sec(rtc_time.block));
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return 1;
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}
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// Lua: tmr.softwd( value )
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static int tmr_softwd( lua_State* L ){
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soft_watchdog = luaL_checkinteger(L, 1);
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return 0;
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}
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// Module function map
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const LUA_REG_TYPE tmr_map[] = {
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{ LSTRKEY( "delay" ), LFUNCVAL( tmr_delay ) },
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{ LSTRKEY( "now" ), LFUNCVAL( tmr_now ) },
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{ LSTRKEY( "wdclr" ), LFUNCVAL( tmr_wdclr ) },
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{ LSTRKEY( "softwd" ), LFUNCVAL( tmr_softwd ) },
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{ LSTRKEY( "time" ), LFUNCVAL( tmr_time ) },
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{ LSTRKEY( "register" ), LFUNCVAL ( tmr_register ) },
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{ LSTRKEY( "alarm" ), LFUNCVAL( tmr_alarm ) },
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{ LSTRKEY( "start" ), LFUNCVAL ( tmr_start ) },
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{ LSTRKEY( "stop" ), LFUNCVAL ( tmr_stop ) },
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{ LSTRKEY( "unregister" ), LFUNCVAL ( tmr_unregister ) },
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{ LSTRKEY( "state" ), LFUNCVAL ( tmr_state ) },
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{ LSTRKEY( "interval" ), LFUNCVAL ( tmr_interval) },
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#if LUA_OPTIMIZE_MEMORY > 0
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{ LSTRKEY( "ALARM_SINGLE" ), LNUMVAL( TIMER_MODE_SINGLE ) },
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{ LSTRKEY( "ALARM_SEMI" ), LNUMVAL( TIMER_MODE_SEMI ) },
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{ LSTRKEY( "ALARM_AUTO" ), LNUMVAL( TIMER_MODE_AUTO ) },
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#endif
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{ LNILKEY, LNILVAL }
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};
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LUALIB_API int luaopen_tmr( lua_State *L ){
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int i;
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for(i=0; i<NUM_TMR; i++){
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alarm_timers[i].lua_ref = LUA_NOREF;
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alarm_timers[i].mode = TIMER_MODE_OFF;
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ets_timer_disarm(&alarm_timers[i].os);
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}
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rtc_time.block = 0;
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ets_timer_disarm(&rtc_timer);
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ets_timer_setfn(&rtc_timer, rtc_callback, NULL);
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ets_timer_arm_new(&rtc_timer, 1000, 1, 1);
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#if LUA_OPTIMIZE_MEMORY > 0
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return 0;
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#else
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luaL_register( L, AUXLIB_TMR, tmr_map );
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lua_pushvalue( L, -1 );
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lua_setmetatable( L, -2 );
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MOD_REG_NUMBER( L, "ALARM_SINGLE", TIMER_MODE_SINGLE );
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MOD_REG_NUMBER( L, "ALARM_SEMI", TIMER_MODE_SEMI );
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MOD_REG_NUMBER( L, "ALARM_AUTO", TIMER_MODE_AUTO );
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return 1;
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#endif
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}
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