334 lines
11 KiB
C
334 lines
11 KiB
C
// Module for working with the ledc driver
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#include "module.h"
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#include "lauxlib.h"
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#include "platform.h"
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#include "driver/ledc.h"
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typedef struct {
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int timer;
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int channel;
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int mode;
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} ledc_channel;
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static int lledc_new_channel( lua_State *L )
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{
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int t=1;
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luaL_checkanytable (L, t);
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/* Setup timer */
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ledc_timer_config_t ledc_timer;
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lua_getfield(L, t, "bits");
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ledc_timer.duty_resolution = luaL_optint (L, -1, LEDC_TIMER_13_BIT);
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if(ledc_timer.duty_resolution < LEDC_TIMER_10_BIT || ledc_timer.duty_resolution > LEDC_TIMER_15_BIT)
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return luaL_error (L, "bits field out of range");
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lua_getfield(L, t, "frequency");
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if (lua_type (L, -1) == LUA_TNUMBER) {
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ledc_timer.freq_hz = luaL_checkinteger(L, -1);
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} else {
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return luaL_error(L, "missing or invalid 'frequency' field");
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}
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lua_getfield(L, t, "mode");
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if (lua_type (L, -1) == LUA_TNUMBER) {
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ledc_timer.speed_mode = luaL_checkinteger(L, -1);
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if(ledc_timer.speed_mode != LEDC_HIGH_SPEED_MODE && ledc_timer.speed_mode != LEDC_LOW_SPEED_MODE)
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return luaL_error (L, "Invalid mode");
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} else {
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return luaL_error(L, "missing or invalid 'mode' field");
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}
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lua_getfield(L, t, "timer");
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if (lua_type (L, -1) == LUA_TNUMBER) {
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ledc_timer.timer_num = luaL_checkinteger(L, -1);
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if(ledc_timer.timer_num < LEDC_TIMER_0 || ledc_timer.timer_num > LEDC_TIMER_3)
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return luaL_error (L, "Invalid timer");
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} else {
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return luaL_error(L, "missing or invalid 'timer' field");
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}
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/* Setup channel */
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ledc_channel_config_t channel_config = {
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.speed_mode = ledc_timer.speed_mode,
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.timer_sel = ledc_timer.timer_num,
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.intr_type = LEDC_INTR_DISABLE
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};
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lua_getfield(L, t, "channel");
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if (lua_type (L, -1) == LUA_TNUMBER) {
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channel_config.channel = luaL_checkinteger(L, -1);
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if(channel_config.channel < LEDC_CHANNEL_0 || channel_config.channel > LEDC_CHANNEL_7)
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return luaL_error (L, "Invalid channel");
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} else {
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return luaL_error(L, "missing or invalid 'channel' field");
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}
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lua_getfield(L, t, "duty");
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if (lua_type (L, -1) == LUA_TNUMBER) {
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channel_config.duty = luaL_checkinteger(L, -1);
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} else {
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return luaL_error(L, "missing or invalid 'duty' field");
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}
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lua_getfield(L, t, "gpio");
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if (lua_type (L, -1) == LUA_TNUMBER) {
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channel_config.gpio_num = luaL_checkinteger(L, -1);
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if(!GPIO_IS_VALID_GPIO(channel_config.gpio_num))
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return luaL_error (L, "Invalid gpio");
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} else {
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return luaL_error(L, "missing or invalid 'gpio' field");
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}
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esp_err_t timerErr = ledc_timer_config(&ledc_timer);
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if(timerErr != ESP_OK)
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return luaL_error (L, "timer configuration failed code %d", timerErr);
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esp_err_t channelErr = ledc_channel_config(&channel_config);
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if(channelErr != ESP_OK)
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return luaL_error (L, "channel configuration failed code %d", channelErr);
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ledc_channel * channel = (ledc_channel*)lua_newuserdata(L, sizeof(ledc_channel));
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luaL_getmetatable(L, "ledc.channel");
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lua_setmetatable(L, -2);
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channel->mode = ledc_timer.speed_mode;
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channel->channel = channel_config.channel;
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channel->timer = ledc_timer.timer_num;
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return 1;
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}
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static int lledc_stop( lua_State *L ) {
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ledc_channel * channel = (ledc_channel*)luaL_checkudata(L, 1, "ledc.channel");
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int idleLevel = luaL_checkint (L, 2);
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luaL_argcheck(L, idleLevel >= 0 && idleLevel <= 1, 1, "Invalid idle level");
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esp_err_t err = ledc_stop(channel->mode, channel->channel, idleLevel);
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if(err != ESP_OK)
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return luaL_error (L, "stop failed, code %d", err);
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return 1;
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}
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static int lledc_set_freq( lua_State *L ) {
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ledc_channel * channel = (ledc_channel*)luaL_checkudata(L, 1, "ledc.channel");
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int frequency = luaL_checkint (L, 2);
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esp_err_t err = ledc_set_freq(channel->mode, channel->timer, frequency);
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if(err != ESP_OK)
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return luaL_error (L, "set freq failed, code %d", err);
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return 1;
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}
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static int lledc_get_freq( lua_State *L ) {
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ledc_channel * channel = (ledc_channel*)luaL_checkudata(L, 1, "ledc.channel");
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int frequency = ledc_get_freq(channel->mode, channel->timer);
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lua_pushinteger (L, frequency);
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return 1;
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}
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static int lledc_set_duty( lua_State *L ) {
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ledc_channel * channel = (ledc_channel*)luaL_checkudata(L, 1, "ledc.channel");
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int duty = luaL_checkint (L, 2);
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esp_err_t dutyErr = ledc_set_duty(channel->mode, channel->channel, duty);
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if(dutyErr != ESP_OK)
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return luaL_error (L, "set duty failed, code %d", dutyErr);
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esp_err_t updateErr = ledc_update_duty(channel->mode, channel->channel);
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if(updateErr != ESP_OK)
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return luaL_error (L, "update duty failed, code %d", updateErr);
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return 1;
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}
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static int lledc_get_duty( lua_State *L ) {
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ledc_channel * channel = (ledc_channel*)luaL_checkudata(L, 1, "ledc.channel");
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int duty = ledc_get_duty(channel->mode, channel->channel);
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lua_pushinteger (L, duty);
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return 1;
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}
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static int lledc_timer_rst( lua_State *L ) {
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ledc_channel * channel = (ledc_channel*)luaL_checkudata(L, 1, "ledc.channel");
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esp_err_t err = ledc_timer_rst(channel->mode, channel->timer);
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if(err != ESP_OK)
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return luaL_error (L, "reset failed, code %d", err);
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return 1;
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}
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static int lledc_timer_pause( lua_State *L ) {
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ledc_channel * channel = (ledc_channel*)luaL_checkudata(L, 1, "ledc.channel");
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esp_err_t err = ledc_timer_pause(channel->mode, channel->timer);
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if(err != ESP_OK)
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return luaL_error (L, "pause failed, code %d", err);
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return 1;
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}
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static int lledc_timer_resume( lua_State *L ) {
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ledc_channel * channel = (ledc_channel*)luaL_checkudata(L, 1, "ledc.channel");
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esp_err_t err = ledc_timer_resume(channel->mode, channel->timer);
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if(err != ESP_OK)
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return luaL_error (L, "resume failed, code %d", err);
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return 1;
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}
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static int lledc_set_fade_with_time( lua_State *L ) {
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ledc_channel * channel = (ledc_channel*)luaL_checkudata(L, 1, "ledc.channel");
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int stack = 1;
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int targetDuty = luaL_checkint (L, ++stack);
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int maxFadeTime = luaL_checkint (L, ++stack);
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int wait = luaL_optint (L, ++stack, LEDC_FADE_NO_WAIT);
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luaL_argcheck(L, wait == LEDC_FADE_NO_WAIT || wait == LEDC_FADE_WAIT_DONE, stack, "Invalid wait");
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ledc_fade_func_install(0);
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esp_err_t fadeErr = ledc_set_fade_with_time(channel->mode, channel->channel, targetDuty, maxFadeTime);
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if(fadeErr != ESP_OK)
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return luaL_error (L, "set fade failed, code %d", fadeErr);
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esp_err_t startErr = ledc_fade_start(channel->mode, channel->channel, wait);
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if(startErr != ESP_OK)
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return luaL_error (L, "start fade failed, code %d", startErr);
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return 1;
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}
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static int lledc_set_fade_with_step( lua_State *L ) {
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ledc_channel * channel = (ledc_channel*)luaL_checkudata(L, 1, "ledc.channel");
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int stack = 1;
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int targetDuty = luaL_checkint (L, ++stack);
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int scale = luaL_checkint (L, ++stack);
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int cycleNum = luaL_checkint (L, ++stack);
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int wait = luaL_optint (L, ++stack, LEDC_FADE_NO_WAIT);
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luaL_argcheck(L, wait == LEDC_FADE_NO_WAIT || wait == LEDC_FADE_WAIT_DONE, stack, "Invalid wait");
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ledc_fade_func_install(0);
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esp_err_t fadeErr = ledc_set_fade_with_step(channel->mode, channel->channel, targetDuty, scale, cycleNum);
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if(fadeErr != ESP_OK)
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return luaL_error (L, "set fade failed, code %d", fadeErr);
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esp_err_t startErr = ledc_fade_start(channel->mode, channel->channel, wait);
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if(startErr != ESP_OK)
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return luaL_error (L, "start fade failed, code %d", startErr);
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return 1;
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}
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static int lledc_set_fade( lua_State *L ) {
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ledc_channel * channel = (ledc_channel*)luaL_checkudata(L, 1, "ledc.channel");
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int stack = 1;
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int duty = luaL_checkint (L, ++stack);
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int direction = luaL_checkint (L, ++stack);
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luaL_argcheck(L, direction == LEDC_DUTY_DIR_DECREASE || direction == LEDC_DUTY_DIR_INCREASE, stack, "Invalid direction");
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int scale = luaL_checkint (L, ++stack);
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int cycleNum = luaL_checkint (L, ++stack);
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int stepNum = luaL_checkint (L, ++stack);;
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int wait = luaL_optint (L, ++stack, LEDC_FADE_NO_WAIT);
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luaL_argcheck(L, wait == LEDC_FADE_NO_WAIT || wait == LEDC_FADE_WAIT_DONE, stack, "Invalid wait");
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ledc_fade_func_install(0);
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esp_err_t fadeErr = ledc_set_fade(channel->mode, channel->channel, duty, direction, stepNum, cycleNum, scale);
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if(fadeErr != ESP_OK)
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return luaL_error (L, "set fade failed, code %d", fadeErr);
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esp_err_t startErr = ledc_fade_start(channel->mode, channel->channel, wait);
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if(startErr != ESP_OK)
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return luaL_error (L, "start fade failed, code %d", startErr);
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return 1;
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}
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// Module function map
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static const LUA_REG_TYPE ledc_channel_map[] =
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{
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{ LSTRKEY( "getduty" ), LFUNCVAL( lledc_get_duty ) },
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{ LSTRKEY( "setduty" ), LFUNCVAL( lledc_set_duty ) },
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{ LSTRKEY( "getfreq" ), LFUNCVAL( lledc_get_freq ) },
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{ LSTRKEY( "setfreq" ), LFUNCVAL( lledc_set_freq ) },
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{ LSTRKEY( "stop" ), LFUNCVAL( lledc_stop ) },
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{ LSTRKEY( "reset" ), LFUNCVAL( lledc_timer_rst ) },
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{ LSTRKEY( "pause" ), LFUNCVAL( lledc_timer_pause ) },
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{ LSTRKEY( "resume" ), LFUNCVAL( lledc_timer_resume ) },
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{ LSTRKEY( "fadewithtime" ), LFUNCVAL( lledc_set_fade_with_time ) },
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{ LSTRKEY( "fadewithstep" ), LFUNCVAL( lledc_set_fade_with_step ) },
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{ LSTRKEY( "fade" ), LFUNCVAL( lledc_set_fade ) },
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{ LSTRKEY( "__index" ), LROVAL( ledc_channel_map )},
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{ LNILKEY, LNILVAL }
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};
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static const LUA_REG_TYPE ledc_map[] =
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{
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{ LSTRKEY( "newChannel" ), LFUNCVAL( lledc_new_channel ) },
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{ LSTRKEY( "HIGH_SPEED"), LNUMVAL( LEDC_HIGH_SPEED_MODE ) },
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{ LSTRKEY( "LOW_SPEED"), LNUMVAL( LEDC_LOW_SPEED_MODE ) },
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{ LSTRKEY( "TIMER_0"), LNUMVAL( LEDC_TIMER_0 ) },
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{ LSTRKEY( "TIMER_1"), LNUMVAL( LEDC_TIMER_1 ) },
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{ LSTRKEY( "TIMER_2"), LNUMVAL( LEDC_TIMER_2 ) },
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{ LSTRKEY( "TIMER_10_BIT"), LNUMVAL( LEDC_TIMER_10_BIT ) },
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{ LSTRKEY( "TIMER_11_BIT"), LNUMVAL( LEDC_TIMER_11_BIT ) },
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{ LSTRKEY( "TIMER_12_BIT"), LNUMVAL( LEDC_TIMER_12_BIT ) },
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{ LSTRKEY( "TIMER_13_BIT"), LNUMVAL( LEDC_TIMER_13_BIT ) },
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{ LSTRKEY( "TIMER_14_BIT"), LNUMVAL( LEDC_TIMER_14_BIT ) },
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{ LSTRKEY( "TIMER_15_BIT"), LNUMVAL( LEDC_TIMER_15_BIT ) },
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{ LSTRKEY( "CHANNEL_0"), LNUMVAL( LEDC_CHANNEL_0 ) },
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{ LSTRKEY( "CHANNEL_1"), LNUMVAL( LEDC_CHANNEL_1 ) },
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{ LSTRKEY( "CHANNEL_2"), LNUMVAL( LEDC_CHANNEL_2 ) },
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{ LSTRKEY( "CHANNEL_3"), LNUMVAL( LEDC_CHANNEL_3 ) },
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{ LSTRKEY( "CHANNEL_4"), LNUMVAL( LEDC_CHANNEL_4 ) },
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{ LSTRKEY( "CHANNEL_5"), LNUMVAL( LEDC_CHANNEL_5 ) },
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{ LSTRKEY( "CHANNEL_6"), LNUMVAL( LEDC_CHANNEL_6 ) },
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{ LSTRKEY( "CHANNEL_7"), LNUMVAL( LEDC_CHANNEL_7 ) },
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{ LSTRKEY( "IDLE_LOW"), LNUMVAL( 0 ) },
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{ LSTRKEY( "IDLE_HIGH"), LNUMVAL( 1 ) },
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{ LSTRKEY( "FADE_NO_WAIT"), LNUMVAL( LEDC_FADE_NO_WAIT ) },
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{ LSTRKEY( "FADE_WAIT_DONE"), LNUMVAL( LEDC_FADE_WAIT_DONE ) },
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{ LSTRKEY( "FADE_DECREASE"), LNUMVAL( LEDC_DUTY_DIR_DECREASE ) },
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{ LSTRKEY( "FADE_INCREASE"), LNUMVAL( LEDC_DUTY_DIR_INCREASE ) },
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{ LNILKEY, LNILVAL }
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};
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int luaopen_ledc(lua_State *L) {
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luaL_rometatable(L, "ledc.channel", (void *)ledc_channel_map); // create metatable for ledc.channel
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return 0;
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}
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NODEMCU_MODULE(LEDC, "ledc", ledc_map, luaopen_ledc);
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