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Tasmota/tasmota/xdrv_24_buzzer.ino

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/*
xdrv_24_Buzzer.ino - buzzer support for Tasmota
Copyright (C) 2021 Theo Arends
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_BUZZER
/*********************************************************************************************\
* Buzzer support
\*********************************************************************************************/
#define XDRV_24 24
struct BUZZER {
uint32_t tune = 0;
uint32_t tune_reload = 0;
bool active = true;
bool enable = false;
uint8_t inverted = 0; // Buzzer inverted flag (1 = (0 = On, 1 = Off))
uint8_t count = 0; // Number of buzzes
uint8_t mode = 0; // Buzzer mode (0 = regular, 1 = infinite, 2 = follow LED)
uint8_t set[2];
uint8_t duration;
uint8_t state = 0;
uint8_t tune_size = 0;
uint8_t size = 0;
uint8_t sleep; // Current copy of TasmotaGlobal.sleep
} Buzzer;
/*********************************************************************************************/
void BuzzerSet(uint32_t state) {
if (Buzzer.inverted) {
state = !state;
}
if (Settings->flag4.buzzer_freq_mode) { // SetOption111 - Enable frequency output mode for buzzer
static uint8_t last_state = 0;
if (last_state != state) {
#ifdef ESP32
if (analogAttach(Pin(GPIO_BUZZER)))
#endif // ESP32
// Set 50% duty cycle for frequency output
// Set 0% (or 100% for inverted PWM) duty cycle which turns off frequency output either way
analogWrite(Pin(GPIO_BUZZER), (state) ? Settings->pwm_range / 2 : 0); // set duty cycle for frequency output
last_state = state;
}
} else {
DigitalWrite(GPIO_BUZZER, 0, state); // Buzzer On/Off
}
}
//void BuzzerBeep(uint32_t count = 1, uint32_t on = 1, uint32_t off = 1, uint32_t tune = 0, uint32_t mode = 0);
void BuzzerBeep(uint32_t count, uint32_t on, uint32_t off, uint32_t tune, uint32_t mode) {
Buzzer.set[0] = off; // Off duration in 100 mSec steps
Buzzer.set[1] = on; // On duration in 100 mSec steps
Buzzer.duration = 1; // Start buzzer on first step
Buzzer.size = 0;
Buzzer.tune_size = 0;
Buzzer.tune = 0;
Buzzer.tune_reload = 0;
Buzzer.mode = mode;
if (tune) {
uint32_t tune1 = tune;
uint32_t tune2 = tune;
for (uint32_t i = 0; i < 32; i++) {
if (!(tune2 & 0x80000000)) {
tune2 <<= 1; // Skip leading silence
} else {
Buzzer.tune_size++; // Allow trailing silence
Buzzer.tune_reload <<= 1; // Add swapped tune
Buzzer.tune_reload |= tune1 & 1;
tune1 >>= 1;
}
}
Buzzer.size = Buzzer.tune_size;
Buzzer.tune = Buzzer.tune_reload;
}
Buzzer.count = count * 2; // Start buzzer
AddLog(LOG_LEVEL_DEBUG, PSTR("BUZ: Count %d(%d), Time %d/%d, Tune 0x%08X(0x%08X), Size %d, Mode %d"),
count, Buzzer.count, on, off, tune, Buzzer.tune, Buzzer.tune_size, Settings->flag4.buzzer_freq_mode);
Buzzer.enable = (Buzzer.count > 0);
if (Buzzer.enable) {
Buzzer.sleep = TasmotaGlobal.sleep;
if (Settings->sleep > PWM_MAX_SLEEP) {
TasmotaGlobal.sleep = PWM_MAX_SLEEP; // Set a maxumum value of 10 milliseconds to ensure that buzzer periods are a bit more accurate
} else {
TasmotaGlobal.sleep = Settings->sleep; // Or keep the current sleep if it's lower than 10
}
} else {
TasmotaGlobal.sleep = Buzzer.sleep; // Restore original sleep
BuzzerSet(0);
}
}
void BuzzerSetStateToLed(uint32_t state) {
if (Buzzer.enable && (2 == Buzzer.mode)) {
Buzzer.state = (state != 0);
BuzzerSet(Buzzer.state);
}
}
void BuzzerBeep(uint32_t count) {
BuzzerBeep(count, 1, 1, 0, 0);
}
void BuzzerEnabledBeep(uint32_t count, uint32_t duration) {
if (Settings->flag3.buzzer_enable) { // SetOption67 - Enable buzzer when available
BuzzerBeep(count, duration, 1, 0, 0);
}
}
/*********************************************************************************************/
bool BuzzerPinState(void) {
if (XdrvMailbox.index == AGPIO(GPIO_BUZZER_INV)) {
Buzzer.inverted = 1;
XdrvMailbox.index -= (AGPIO(GPIO_BUZZER_INV) - AGPIO(GPIO_BUZZER));
return true;
}
return false;
}
void BuzzerInit(void) {
if (PinUsed(GPIO_BUZZER)) {
pinMode(Pin(GPIO_BUZZER), OUTPUT);
BuzzerSet(0);
} else {
Buzzer.active = false;
}
}
void BuzzerEvery100mSec(void) {
if (Buzzer.enable && (Buzzer.mode != 2)) {
if (Buzzer.count) {
if (Buzzer.duration) {
Buzzer.duration--;
if (!Buzzer.duration) {
if (Buzzer.size) {
Buzzer.size--;
Buzzer.state = Buzzer.tune & 1;
Buzzer.tune >>= 1;
} else {
Buzzer.size = Buzzer.tune_size;
Buzzer.tune = Buzzer.tune_reload;
Buzzer.count -= (Buzzer.tune_reload) ? 2 : 1;
Buzzer.state = Buzzer.count & 1;
if (Buzzer.mode) {
Buzzer.count |= 2;
}
}
Buzzer.duration = Buzzer.set[Buzzer.state];
}
}
BuzzerSet(Buzzer.state);
} else {
TasmotaGlobal.sleep = Buzzer.sleep; // Restore original sleep
Buzzer.enable = false;
}
}
}
/*********************************************************************************************\
* Commands
\*********************************************************************************************/
const char kBuzzerCommands[] PROGMEM = "Buzzer|" // Prefix
"Active|Pwm||" ;
SO_SYNONYMS(kBuzzerSynonyms,
67, 111
);
void (* const BuzzerCommand[])(void) PROGMEM = {
&CmndBuzzer };
void CmndBuzzer(void) {
// Buzzer <number of beeps>,<duration of beep in 100mS steps>,<duration of silence in 100mS steps>,<tune>
// All parameters are optional
//
// Buzzer = Buzzer 1,1,1 = Beep once with both duration and pause set to 100mS
// Buzzer 0 = Stop active beep cycle
// Buzzer 2 = Beep twice with duration 200mS and pause 100mS
// Buzzer 2,3 = Beep twice with duration 300mS and pause 100mS
// Buzzer 2,3,4 = Beep twice with duration 300mS and pause 400mS
// Buzzer 2,3,4,0x0F54 = Beep a sequence twice indicated by 0x0F54 = 1111 0101 0100 with duration 300mS and pause 400mS
// Notice skipped leading zeroes but valid trailing zeroes
// Buzzer -1 = Beep infinite
// Buzzer -2 = Beep following link led
if (XdrvMailbox.data_len > 0) {
if (XdrvMailbox.payload != 0) {
uint32_t parm[4] = { 0 };
ParseParameters(4, parm);
uint32_t mode = 0;
if (XdrvMailbox.payload < 0) {
parm[0] = 1; // Default Count
if (XdrvMailbox.payload > -3) {
mode = -XdrvMailbox.payload; // 0, 1 or 2
}
}
for (uint32_t i = 1; i < 3; i++) {
if (parm[i] < 1) { parm[i] = 1; } // Default On time, Off time
}
BuzzerBeep(parm[0], parm[1], parm[2], parm[3], mode);
} else {
BuzzerBeep(0);
}
} else {
BuzzerBeep(1);
}
ResponseCmndDone();
}
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
bool Xdrv24(uint8_t function) {
bool result = false;
if (Buzzer.active) {
switch (function) {
case FUNC_EVERY_100_MSECOND:
BuzzerEvery100mSec();
break;
case FUNC_COMMAND:
result = DecodeCommand(kBuzzerCommands, BuzzerCommand, kBuzzerSynonyms);
break;
case FUNC_PRE_INIT:
BuzzerInit();
break;
case FUNC_PIN_STATE:
result = BuzzerPinState();
break;
}
}
return result;
}
#endif // USE_BUZZER
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