mirror of https://github.com/arendst/Tasmota.git
291 lines
11 KiB
C++
291 lines
11 KiB
C++
/*
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xdrv_68_zerocrossdimmer.ino - Zero-Cross Dimmer support for Tasmota
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Copyright (C) 2023 Stefan Bode
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef USE_AC_ZERO_CROSS_DIMMER
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/*********************************************************************************************\
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* Zero-Cross AC Dimmer PMM 1..xx use
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\*********************************************************************************************/
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#define XDRV_68 68
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static const uint8_t TRIGGER_PERIOD = 75;
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#define ZCDIMMERSET_SHOW 1
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//#define ZC_DEBUG 1
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struct AC_ZERO_CROSS_DIMMER {
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uint32_t cycle_time_us; // Time (in micros()) of last ZC signal
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uint32_t crossed_zero_at; // Time (in micros()) of last ZC signal
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bool timer_iterrupt_started = false; // verification of the interrupt running
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bool dimmer_in_use = false; // Check if interrupt has to be run. Is stopped if all lights off
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bool fallingEdgeDimmer = false; // Work as a fallwing edge dimmer
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uint32_t enable_time_us[MAX_PWMS]; // Time since last ZC pulse to enable gate pin. 0 means no disable.
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uint32_t lastlight[MAX_PWMS]; // Store the light value. Set 1 if controlled through ZCDimmerSet
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uint16_t detailpower[MAX_PWMS]; // replaces dimmer and light controll 0..10000. required savedata 0.
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uint32_t accurracy[MAX_PWMS]; // offset of the time to fire the triac and the real time when it fired
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uint32_t intr_counter = 0; // counter internally on interrerupt calls
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uint32_t missed_zero_cross; // count up all missed Zero-cross events.
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uint8_t actual_tigger_Period = TRIGGER_PERIOD; // copy of tigger period to change during runtime
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} ac_zero_cross_dimmer;
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#ifdef ESP32
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static hw_timer_t *dimmer_timer = nullptr; // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
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#endif
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#define D_PRFX_ZCDIMMER "ZCDimmer"
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#define D_CMND_DIMMERSET "Set" // Set percent as float value for dimmer
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#define D_CMND_GATEENABLE "GateTime" // Override the GATE ON time DEBUG PURPOSE
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const char kZCDimmerCommands[] PROGMEM = D_PRFX_ZCDIMMER "|" D_CMND_DIMMERSET "|" D_CMND_GATEENABLE;
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void (* const ZCDimmerCommand[])(void) PROGMEM = {
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&CmndZCDimmerSet//,&CmndZCGateEnableTime
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};
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void IRAM_ATTR ACDimmerZeroCross(uint32_t time) {
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ac_zero_cross_dimmer.dimmer_in_use = false;
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ac_zero_cross_dimmer.cycle_time_us = time - ac_zero_cross_dimmer.crossed_zero_at;
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ac_zero_cross_dimmer.crossed_zero_at = time;
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for (uint8_t i=0; i < MAX_PWMS; i++) {
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if (Pin(GPIO_PWM1, i) == -1) continue;
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digitalWrite(Pin(GPIO_PWM1, i), LOW ^ ac_zero_cross_dimmer.fallingEdgeDimmer);
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ac_zero_cross_dimmer.dimmer_in_use |= ac_zero_cross_dimmer.lastlight[i] > 0;
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}
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}
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uint32_t IRAM_ATTR ACDimmerTimer_intr_ESP8266() {
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//ACDimmerTimer_intr();
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ACDimmerTimer_intr();
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return ac_zero_cross_dimmer.actual_tigger_Period * 80;
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}
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void ACDimmerInit()
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{
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for (uint8_t i = 0 ; i < 5; i++) {
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ac_zero_cross_dimmer.detailpower[i] = Settings->zcdimmerset[i];
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ac_zero_cross_dimmer.fallingEdgeDimmer = Settings->flag6.zcfallingedge;
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}
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}
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void ACDimmerInterruptDisable(bool disable)
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{
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AddLog(LOG_LEVEL_INFO, PSTR("ZCD: Zero-CrossDimmer enabled: %d"),!disable);
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ac_zero_cross_dimmer.timer_iterrupt_started = !disable;
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if (disable) {
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//stop the interrupt
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#ifdef ESP32
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if (dimmer_timer != nullptr) {
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timerAlarmDisable(dimmer_timer);
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}
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#endif
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} else {
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for (uint8_t i = 0 ; i < MAX_PWMS; i++) {
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if (Pin(GPIO_PWM1, i) != -1) {
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pinMode(Pin(GPIO_PWM1, i), OUTPUT);
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AddLog(LOG_LEVEL_INFO, PSTR("ZCD: Zero-CrossDimmer Pin %d set"),Pin(GPIO_PWM1, i));
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}
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}
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#ifdef ESP32
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if (dimmer_timer == nullptr) {
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// 80 Divider -> 1 count=1µs
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dimmer_timer = timerBegin(0, 80, true);
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timerAttachInterrupt(dimmer_timer, &ACDimmerTimer_intr, true);
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// For ESP32, we can't use dynamic interval calculation because the timerX functions
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// are not callable from ISR (placed in flash storage).
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// Here we just use an interrupt firing every 75 µs.
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timerAlarmWrite(dimmer_timer, TRIGGER_PERIOD , true);
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}
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timerAlarmEnable(dimmer_timer);
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#endif
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}
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}
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void IRAM_ATTR ACDimmerTimer_intr() {
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uint32_t time_since_zc = micros() - ac_zero_cross_dimmer.crossed_zero_at;
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// If no ZC signal received yet.
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if (ac_zero_cross_dimmer.crossed_zero_at == 0) return;
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#ifdef ZC_DEBUG
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ac_zero_cross_dimmer.intr_counter++;
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// Check for missed Zero-Cross event. Single failure will correct
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if (time_since_zc > 10100) {
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ac_zero_cross_dimmer.crossed_zero_at += ac_zero_cross_dimmer.cycle_time_us;
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ac_zero_cross_dimmer.missed_zero_cross++;
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time_since_zc += ac_zero_cross_dimmer.cycle_time_us;
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}
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#endif
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ac_zero_cross_dimmer.actual_tigger_Period = TRIGGER_PERIOD;
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for (uint8_t i = 0 ; i < MAX_PWMS; i++ ) {
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if (Pin(GPIO_PWM1, i) == -1) continue;
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if (time_since_zc + TRIGGER_PERIOD >= ac_zero_cross_dimmer.enable_time_us[i]){
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// Very close to the fire event. Loop the last µseconds to wait.
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#ifdef ESP8266
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// on ESP8266 we can change dynamically the trigger interval
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ac_zero_cross_dimmer.actual_tigger_Period = tmin(ac_zero_cross_dimmer.actual_tigger_Period,tmax(5,ac_zero_cross_dimmer.enable_time_us[i] - time_since_zc));
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#endif
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#ifdef ESP32
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while (time_since_zc < ac_zero_cross_dimmer.enable_time_us[i]) {
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time_since_zc = micros() - ac_zero_cross_dimmer.crossed_zero_at;
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}
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#endif
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if (time_since_zc >= ac_zero_cross_dimmer.enable_time_us[i]) {
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digitalWrite(Pin(GPIO_PWM1, i), HIGH ^ ac_zero_cross_dimmer.fallingEdgeDimmer );
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#ifdef ZC_DEBUG
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ac_zero_cross_dimmer.accurracy[i] = time_since_zc-ac_zero_cross_dimmer.enable_time_us[i];
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#endif
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}
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}
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}
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}
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void ACDimmerControllTrigger(void) {
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#ifdef ESP32
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if (ac_zero_cross_dimmer.timer_iterrupt_started != ac_zero_cross_dimmer.dimmer_in_use) {
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AddLog(LOG_LEVEL_DEBUG_MORE, PSTR("ZCD: ZeroEnable %d --> %d ... change..."),ac_zero_cross_dimmer.timer_iterrupt_started, ac_zero_cross_dimmer.dimmer_in_use);
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ACDimmerInterruptDisable(!ac_zero_cross_dimmer.dimmer_in_use);
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}
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#endif
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for (uint8_t i = 0; i < MAX_PWMS; i++){
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if (Pin(GPIO_PWM1, i) == -1) continue;
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if (ac_zero_cross_dimmer.detailpower[i]){
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ac_zero_cross_dimmer.lastlight[i] = changeUIntScale(ac_zero_cross_dimmer.detailpower[i]/10, 0, 1000, 0, 1023);
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} else {
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ac_zero_cross_dimmer.lastlight[i] = Light.fade_running ? Light.fade_cur_10[i] : Light.fade_start_10[i];
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}
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ac_zero_cross_dimmer.enable_time_us[i] = (ac_zero_cross_dimmer.cycle_time_us * (1023 - ac_zero_cross_power(ac_zero_cross_dimmer.lastlight[i]))) / 1023;
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#ifdef ESP32
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if (ac_zero_cross_dimmer.detailpower[i]){
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float state = (float)(1 - (ac_zero_cross_dimmer.detailpower[i]/10000.0));
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//state = std::acos(1 - (2 * state)) / 3.14159 * ac_zero_cross_dimmer.cycle_time_us;
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state = std::acos(1 - (2 * state)) / 3.14159 * ac_zero_cross_dimmer.cycle_time_us;
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//AddLog(LOG_LEVEL_DEBUG_MORE, PSTR("ZCD: Float2: %*_f"),0,&state);
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ac_zero_cross_dimmer.enable_time_us[i] = (uint32_t)state;
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}
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#endif
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}
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}
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void ACDimmerLogging(void)
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{
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bool alarmEnabled = false;
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uint32_t timercounter = ac_zero_cross_dimmer.intr_counter;
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#ifdef ESP32
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if (dimmer_timer != nullptr) {
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alarmEnabled = timerAlarmEnabled(dimmer_timer);
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timercounter = (uint32_t)timerRead(dimmer_timer);
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}
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#endif
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AddLog(LOG_LEVEL_DEBUG, PSTR("ZCD: ZeroEnable %d -> %d, Alarm %d, intr: %ld, cycle time: %ld µs, missed zc %ld"),
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ac_zero_cross_dimmer.dimmer_in_use, ac_zero_cross_dimmer.timer_iterrupt_started, alarmEnabled, timercounter,
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ac_zero_cross_dimmer.cycle_time_us, ac_zero_cross_dimmer.missed_zero_cross
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);
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for (uint8_t i = 0; i < MAX_PWMS; i++){
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if (Pin(GPIO_PWM1, i) == -1) continue;
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AddLog(LOG_LEVEL_DEBUG_MORE, PSTR("ZCD: PWM[%d] en: %ld µs, fade: %d, cur: %d, end: %d, lastlight: %d, acc: %ld"),
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i+1, ac_zero_cross_dimmer.enable_time_us[i],
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Light.fade_cur_10[i], Light.fade_start_10[i], Light.fade_end_10[i], ac_zero_cross_dimmer.lastlight[i],
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ac_zero_cross_dimmer.accurracy[i]
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);
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}
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}
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#ifdef USE_WEBSERVER
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#ifdef ZCDIMMERSET_SHOW
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void ACDimmerShow(void)
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{
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char c_ZCDimmerSetBuffer[8];
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for (uint8_t i = 0; i < MAX_PWMS; i++){
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if (Pin(GPIO_PWM1, i) == -1) continue;
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if (ac_zero_cross_dimmer.detailpower[i]){
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dtostrfd(ac_zero_cross_dimmer.detailpower[i]/100.0, 2, c_ZCDimmerSetBuffer);
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WSContentSend_PD(PSTR("{s}ZCDimmer%d{m}%s %%{e}"), i+1, c_ZCDimmerSetBuffer);
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}
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}
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}
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#endif // ZCDIMMERSET_SHOW
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#endif // USE_WEBSERVER
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/*********************************************************************************************\
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* Commands
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\*********************************************************************************************/
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void CmndZCDimmerSet(void)
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{
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if ((XdrvMailbox.index > 0) && (XdrvMailbox.index <= MAX_PWMS)) {
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if (XdrvMailbox.data_len > 0) {
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Settings->zcdimmerset[XdrvMailbox.index-1] = ac_zero_cross_dimmer.detailpower[XdrvMailbox.index-1] = (uint16_t)(100 * CharToFloat(XdrvMailbox.data));
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}
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ResponseCmndIdxFloat((float)(ac_zero_cross_dimmer.detailpower[XdrvMailbox.index-1]) / 100, 2);
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}
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}
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/*********************************************************************************************\
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* Interface
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\*********************************************************************************************/
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bool Xdrv68(uint32_t function)
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{
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bool result = false;
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if (Settings->flag4.zerocross_dimmer) {
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switch (function) {
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case FUNC_INIT:
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ACDimmerInit();
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#ifdef ESP32
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//ACDimmerInterruptDisable(false);
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#endif
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#ifdef ESP8266
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setTimer1Callback(&ACDimmerTimer_intr_ESP8266);
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#endif
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break;
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case FUNC_EVERY_SECOND:
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ACDimmerLogging();
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break;
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case FUNC_EVERY_100_MSECOND:
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ACDimmerControllTrigger();
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break;
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case FUNC_INTERRUPT_STOP:
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ACDimmerInterruptDisable(true);
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break;
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case FUNC_INTERRUPT_START:
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ACDimmerInterruptDisable(false);
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break;
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case FUNC_COMMAND:
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result = DecodeCommand(kZCDimmerCommands, ZCDimmerCommand);
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break;
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#ifdef USE_WEBSERVER
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#ifdef ZCDIMMERSET_SHOW
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case FUNC_WEB_SENSOR:
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ACDimmerShow();
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break;
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#endif // ZCDIMMERSET_SHOW
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#endif // USE_WEBSERVER
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}
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}
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return result;
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}
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#endif // USE_AC_ZERO_CROSS_DIMMER
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