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Tasmota/sonoff/xdrv_16_tuyadimmer.ino

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/*
xdrv_16_tuyadimmer.ino - Tuya dimmer support for Sonoff-Tasmota
Copyright (C) 2018 digiblur, Joel Stein and 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_TUYA_DIMMER
#ifndef TUYA_DIMMER_ID
#define TUYA_DIMMER_ID 3
#endif
uint8_t tuya_new_dim = 0; // Tuya dimmer value temp
boolean tuya_ignore_dim = false; // Flag to skip serial send to prevent looping when processing inbound states from the faceplate interaction
uint8_t tuya_cmd_status = 0; // Current status of serial-read
uint8_t tuya_cmd_checksum = 0; // Checksum of tuya command
uint8_t tuya_data_len = 0; // Data lenght of command
boolean TuyaSetPower()
{
boolean status = false;
uint8_t rpower = XdrvMailbox.index;
int16_t source = XdrvMailbox.payload;
if (source != SRC_SWITCH ) { // ignore to prevent loop from pushing state from faceplate interaction
snprintf_P(log_data, sizeof(log_data), PSTR("TYA: SetDevicePower.rpower=%d"), rpower);
AddLog(LOG_LEVEL_DEBUG);
Serial.write(0x55); // Tuya header 55AA
Serial.write(0xAA);
Serial.write(0x00); // version 00
Serial.write(0x06); // Tuya command 06
Serial.write(0x00);
Serial.write(0x05); // following data length 0x05
Serial.write(0x01); // relay number 1,2,3
Serial.write(0x01);
Serial.write(0x00);
Serial.write(0x01);
Serial.write(rpower); // status
Serial.write(0x0D + rpower); // checksum sum of all bytes in packet mod 256
Serial.flush();
status = true;
}
return status;
}
void LightSerialDuty(uint8_t duty)
{
if (duty > 0 && !tuya_ignore_dim ) {
if (duty < 25) {
duty = 25; // dimming acts odd below 25(10%) - this mirrors the threshold set on the faceplate itself
}
Serial.write(0x55); // Tuya header 55AA
Serial.write(0xAA);
Serial.write(0x00); // version 00
Serial.write(0x06); // Tuya command 06 - send order
Serial.write(0x00);
Serial.write(0x08); // following data length 0x08
Serial.write(Settings.param[P_TUYA_DIMMER_ID]); // dimmer id
Serial.write(0x02); // type=value
Serial.write(0x00); // length hi
Serial.write(0x04); // length low
Serial.write(0x00); //
Serial.write(0x00); //
Serial.write(0x00); //
Serial.write( duty ); // dim value (0-255)
Serial.write( byte(Settings.param[P_TUYA_DIMMER_ID] + 19 + duty) ); // checksum:sum of all bytes in packet mod 256
Serial.flush();
snprintf_P(log_data, sizeof(log_data), PSTR( "TYA: Send Serial Packet Dim Value=%d (id=%d)"), duty, Settings.param[P_TUYA_DIMMER_ID]);
AddLog(LOG_LEVEL_DEBUG);
} else {
tuya_ignore_dim = false; // reset flag
snprintf_P(log_data, sizeof(log_data), PSTR( "TYA: Send Dim Level skipped due to 0 or already set. Value=%d"), duty);
AddLog(LOG_LEVEL_DEBUG);
}
}
void TuyaPacketProcess()
{
char scmnd[20];
snprintf_P(log_data, sizeof(log_data), PSTR("TYA: Packet Size=%d"), serial_in_byte_counter);
AddLog(LOG_LEVEL_DEBUG);
if (serial_in_byte_counter == 7 && serial_in_buffer[3] == 14 ) { // heartbeat packet
AddLog_P(LOG_LEVEL_DEBUG, PSTR("TYA: Heartbeat"));
}
else if (serial_in_byte_counter == 12 && serial_in_buffer[3] == 7 && serial_in_buffer[5] == 5) { // on/off packet
snprintf_P(log_data, sizeof(log_data),PSTR("TYA: Rcvd - %s State"),serial_in_buffer[10]?"On":"Off");
AddLog(LOG_LEVEL_DEBUG);
if((power || Settings.light_dimmer > 0) && (power != serial_in_buffer[10])) {
ExecuteCommandPower(1, serial_in_buffer[10], SRC_SWITCH); // send SRC_SWITCH? to use as flag to prevent loop from inbound states from faceplate interaction
}
}
else if (serial_in_byte_counter == 15 && serial_in_buffer[3] == 7 && serial_in_buffer[5] == 8) { // dim packet
snprintf_P(log_data, sizeof(log_data), PSTR("TYA: Rcvd Dim State=%d"), serial_in_buffer[13]);
AddLog(LOG_LEVEL_DEBUG);
tuya_new_dim = round(serial_in_buffer[13] * (100. / 255.));
if((power) && (tuya_new_dim > 0) && (abs(tuya_new_dim - Settings.light_dimmer) > 2)) {
snprintf_P(log_data, sizeof(log_data), PSTR("TYA: Send CMND_DIMMER=%d"), tuya_new_dim );
AddLog(LOG_LEVEL_DEBUG);
snprintf_P(scmnd, sizeof(scmnd), PSTR(D_CMND_DIMMER " %d"), tuya_new_dim );
snprintf_P(log_data, sizeof(log_data), PSTR("TYA: Send CMND_DIMMER_STR=%s"), scmnd );
AddLog(LOG_LEVEL_DEBUG);
tuya_ignore_dim = true;
ExecuteCommand(scmnd, SRC_SWITCH);
}
}
else if (serial_in_byte_counter == 8 && serial_in_buffer[3] == 5 && serial_in_buffer[5] == 1 && serial_in_buffer[7] == 5 ) { // reset WiFi settings packet - to do: reset red MCU LED after WiFi is up
AddLog_P(LOG_LEVEL_DEBUG, PSTR("TYA: WiFi Reset Rcvd"));
snprintf_P(scmnd, sizeof(scmnd), D_CMND_WIFICONFIG " 2");
ExecuteCommand(scmnd, SRC_BUTTON);
}
}
void TuyaSerialInput()
{
while (Serial.available()) {
yield();
serial_in_byte = Serial.read();
//snprintf_P(log_data, sizeof(log_data), PSTR("TYA: serial_in_byte %d, tuya_cmd_status %d, tuya_cmd_checksum %d, tuya_data_len %d, serial_in_byte_counter %d"), serial_in_byte, tuya_cmd_status, tuya_cmd_checksum, tuya_data_len, serial_in_byte_counter);
//AddLog(LOG_LEVEL_DEBUG);
if (serial_in_byte == 0x55) { // Start TUYA Packet
tuya_cmd_status = 1;
serial_in_buffer[serial_in_byte_counter++] = serial_in_byte;
tuya_cmd_checksum += serial_in_byte;
}
else if (tuya_cmd_status == 1 && serial_in_byte == 0xAA){ // Only packtes with header 0x55AA are valid
tuya_cmd_status = 2;
AddLog_P(LOG_LEVEL_DEBUG, PSTR("TYA: 0x55AA Packet Start"));
serial_in_byte_counter = 0;
serial_in_buffer[serial_in_byte_counter++] = 0x55;
serial_in_buffer[serial_in_byte_counter++] = 0xAA;
tuya_cmd_checksum = 0xFF;
}
else if (tuya_cmd_status == 2){
if(serial_in_byte_counter == 5){ // Get length of data
tuya_cmd_status = 3;
tuya_data_len = serial_in_byte;
}
tuya_cmd_checksum += serial_in_byte;
serial_in_buffer[serial_in_byte_counter++] = serial_in_byte;
}
else if ((tuya_cmd_status == 3) && (serial_in_byte_counter == (6 + tuya_data_len)) && (tuya_cmd_checksum == serial_in_byte)){ // Compare checksum and process packet
serial_in_buffer[serial_in_byte_counter++] = serial_in_byte;
snprintf_P(log_data, sizeof(log_data), PSTR("TYA: 0x55 Packet End: \""));
for (int i = 0; i < serial_in_byte_counter; i++) {
snprintf_P(log_data, sizeof(log_data), PSTR("%s%02x"), log_data, serial_in_buffer[i]);
}
snprintf_P(log_data, sizeof(log_data), PSTR("%s\""), log_data);
AddLog(LOG_LEVEL_DEBUG);
TuyaPacketProcess();
serial_in_byte_counter = 0;
tuya_cmd_status = 0;
tuya_cmd_checksum = 0;
tuya_data_len = 0;
} // read additional packets from TUYA
else if(serial_in_byte_counter < INPUT_BUFFER_SIZE -1) { // add char to string if it still fits
serial_in_buffer[serial_in_byte_counter++] = serial_in_byte;
tuya_cmd_checksum += serial_in_byte;
} else {
serial_in_byte_counter = 0;
tuya_cmd_status = 0;
tuya_cmd_checksum = 0;
tuya_data_len = 0;
}
}
}
boolean TuyaModuleSelected()
{
baudrate = 9600;
light_type = LT_SERIAL;
return true;
}
void TuyaInit()
{
if (!Settings.param[P_TUYA_DIMMER_ID]) {
Settings.param[P_TUYA_DIMMER_ID] = TUYA_DIMMER_ID;
}
Serial.setDebugOutput(false);
ClaimSerial();
// Get current status of MCU
snprintf_P(log_data, sizeof(log_data), "TYA: Request MCU state");
AddLog(LOG_LEVEL_DEBUG);
Serial.write(0x55); // header 55AA
Serial.write(0xAA);
Serial.write(0x00); // version 00
Serial.write(0x08); // command 08 - get status
Serial.write(0x00);
Serial.write(0x00); // following data length 0x00
Serial.write(0x07); // checksum:sum of all bytes in packet mod 256
Serial.flush();
}
boolean TuyaButtonPressed()
{
if ((PRESSED == XdrvMailbox.payload) && (NOT_PRESSED == lastbutton[XdrvMailbox.index])) {
snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_APPLICATION D_BUTTON "%d " D_LEVEL_10), XdrvMailbox.index +1);
AddLog(LOG_LEVEL_DEBUG);
if (!Settings.flag.button_restrict) {
char scmnd[20];
snprintf_P(scmnd, sizeof(scmnd), D_CMND_WIFICONFIG " %d", 2);
ExecuteCommand(scmnd, SRC_BUTTON);
}
}
return true; // Serviced here
}
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
#define XDRV_16
boolean Xdrv16(byte function)
{
boolean result = false;
if (TUYA_DIMMER == Settings.module) {
switch (function) {
case FUNC_MODULE_INIT:
result = TuyaModuleSelected();
break;
case FUNC_INIT:
TuyaInit();
break;
case FUNC_LOOP:
TuyaSerialInput();
break;
case FUNC_SET_DEVICE_POWER:
result = TuyaSetPower();
break;
case FUNC_BUTTON_PRESSED:
result = TuyaButtonPressed();
break;
}
}
return result;
}
#endif // USE_TUYA_DIMMER
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