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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
#define XDRV_16 16
#ifndef TUYA_DIMMER_ID
#define TUYA_DIMMER_ID 0
#endif
#define TUYA_POWER_ID 1
#define TUYA_CMD_HEARTBEAT 0x00
#define TUYA_CMD_QUERY_PRODUCT 0x01
#define TUYA_CMD_MCU_CONF 0x02
#define TUYA_CMD_WIFI_STATE 0x03
#define TUYA_CMD_WIFI_RESET 0x04
#define TUYA_CMD_WIFI_SELECT 0x05
#define TUYA_CMD_SET_DP 0x06
#define TUYA_CMD_STATE 0x07
#define TUYA_CMD_QUERY_STATE 0x08
#define TUYA_TYPE_BOOL 0x01
#define TUYA_TYPE_VALUE 0x02
#define TUYA_BUFFER_SIZE 256
#include <TasmotaSerial.h>
TasmotaSerial *TuyaSerial = nullptr;
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
int8_t tuya_wifi_state = -2; // Keep MCU wifi-status in sync with WifiState()
char tuya_buffer[TUYA_BUFFER_SIZE]; // Serial receive buffer
int tuya_byte_counter = 0; // Index in serial receive buffer
/*********************************************************************************************\
* Internal Functions
\*********************************************************************************************/
void TuyaSendCmd(uint8_t cmd, uint8_t payload[] = nullptr, uint16_t payload_len = 0){
uint8_t checksum = (0xFF + cmd + (payload_len >> 8) + (payload_len & 0xFF));
TuyaSerial->write(0x55); // Tuya header 55AA
TuyaSerial->write(0xAA);
TuyaSerial->write((uint8_t)0x00); // version 00
TuyaSerial->write(cmd); // Tuya command
TuyaSerial->write(payload_len >> 8); // following data length (Hi)
TuyaSerial->write(payload_len & 0xFF); // following data length (Lo)
snprintf_P(log_data, sizeof(log_data), PSTR("TYA: Sent Packet: \"55aa00%02x%02x%02x"), cmd, payload_len >> 8, payload_len & 0xFF);
for(int i = 0; i < payload_len; ++i) {
TuyaSerial->write(payload[i]);
checksum += payload[i];
snprintf_P(log_data, sizeof(log_data), PSTR("%s%02x"), log_data, payload[i]);
}
TuyaSerial->write(checksum);
TuyaSerial->flush();
snprintf_P(log_data, sizeof(log_data), PSTR("%s%02x\""), log_data, checksum);
AddLog(LOG_LEVEL_DEBUG);
}
void TuyaSendState(uint8_t id, uint8_t type, uint8_t* value){
uint16_t payload_len = 4;
uint8_t payload_buffer[8];
payload_buffer[0] = id;
payload_buffer[1] = type;
switch(type){
case TUYA_TYPE_BOOL:
payload_len += 1;
payload_buffer[2] = 0x00;
payload_buffer[3] = 0x01;
payload_buffer[4] = value[0];
break;
case TUYA_TYPE_VALUE:
payload_len += 4;
payload_buffer[2] = 0x00;
payload_buffer[3] = 0x04;
payload_buffer[4] = value[3];
payload_buffer[5] = value[2];
payload_buffer[6] = value[1];
payload_buffer[7] = value[0];
break;
}
TuyaSendCmd(TUYA_CMD_SET_DP, payload_buffer, payload_len);
}
void TuyaSendBool(uint8_t id, boolean value){
TuyaSendState(id, TUYA_TYPE_BOOL, &value);
}
void TuyaSendValue(uint8_t id, uint32_t value){
TuyaSendState(id, TUYA_TYPE_VALUE, (uint8_t*)(&value));
}
boolean TuyaSetPower()
{
boolean status = false;
uint8_t rpower = XdrvMailbox.index;
int16_t source = XdrvMailbox.payload;
if (source != SRC_SWITCH && TuyaSerial) { // 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);
TuyaSendBool(TUYA_POWER_ID, rpower);
status = true;
}
return status;
}
void LightSerialDuty(uint8_t duty)
{
if (duty > 0 && !tuya_ignore_dim && TuyaSerial) {
if (duty < 25) {
duty = 25; // dimming acts odd below 25(10%) - this mirrors the threshold set on the faceplate itself
}
TuyaSendValue(Settings.param[P_TUYA_DIMMER_ID], duty);
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 TuyaRequestState(){
if(TuyaSerial) {
// Get current status of MCU
snprintf_P(log_data, sizeof(log_data), "TYA: Request MCU state");
AddLog(LOG_LEVEL_DEBUG);
TuyaSendCmd(TUYA_CMD_QUERY_STATE);
}
}
void TuyaResetWifi()
{
if (!Settings.flag.button_restrict) {
char scmnd[20];
snprintf_P(scmnd, sizeof(scmnd), D_CMND_WIFICONFIG " %d", 2);
ExecuteCommand(scmnd, SRC_BUTTON);
}
}
void TuyaPacketProcess()
{
char scmnd[20];
switch(tuya_buffer[3]) {
case TUYA_CMD_HEARTBEAT:
AddLog_P(LOG_LEVEL_DEBUG, PSTR("TYA: Heartbeat"));
if(tuya_buffer[6] == 0){
AddLog_P(LOG_LEVEL_DEBUG, PSTR("TYA: Detected MCU restart"));
tuya_wifi_state = -2;
}
break;
case TUYA_CMD_STATE:
if (tuya_buffer[5] == 5) { // on/off packet
snprintf_P(log_data, sizeof(log_data),PSTR("TYA: Rcvd - %s State"),tuya_buffer[10]?"On":"Off");
AddLog(LOG_LEVEL_DEBUG);
if((power || Settings.light_dimmer > 0) && (power != tuya_buffer[10])) {
ExecuteCommandPower(1, tuya_buffer[10], SRC_SWITCH); // send SRC_SWITCH? to use as flag to prevent loop from inbound states from faceplate interaction
}
}
else if (tuya_buffer[5] == 8) { // dim packet
snprintf_P(log_data, sizeof(log_data), PSTR("TYA: Rcvd Dim State=%d"), tuya_buffer[13]);
AddLog(LOG_LEVEL_DEBUG);
if (!Settings.param[P_TUYA_DIMMER_ID]) {
snprintf_P(log_data, sizeof(log_data), PSTR("TYA: Autoconfiguring Dimmer ID %d"), tuya_buffer[6]);
AddLog(LOG_LEVEL_DEBUG);
Settings.param[P_TUYA_DIMMER_ID] = tuya_buffer[6];
}
tuya_new_dim = round(tuya_buffer[13] * (100. / 255.));
if((power || Settings.flag3.tuya_apply_o20) && (tuya_new_dim > 0) && (abs(tuya_new_dim - Settings.light_dimmer) > 1)) {
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);
}
}
break;
case TUYA_CMD_WIFI_RESET:
case TUYA_CMD_WIFI_SELECT:
AddLog_P(LOG_LEVEL_DEBUG, PSTR("TYA: Rcvd WiFi Reset"));
TuyaResetWifi();
break;
case TUYA_CMD_WIFI_STATE:
AddLog_P(LOG_LEVEL_DEBUG, PSTR("TYA: Rcvd WiFi LED set ACK"));
tuya_wifi_state = WifiState();
break;
case TUYA_CMD_MCU_CONF:
AddLog_P(LOG_LEVEL_DEBUG, PSTR("TYA: Rcvd MCU configuration"));
if (tuya_buffer[5] == 2) {
uint8_t led1_gpio = tuya_buffer[6];
uint8_t key1_gpio = tuya_buffer[7];
boolean key1_set = false;
boolean led1_set = false;
for (byte i = 0; i < MAX_GPIO_PIN; i++) {
if (Settings.my_gp.io[i] == GPIO_LED1) led1_set = true;
else if (Settings.my_gp.io[i] == GPIO_KEY1) key1_set = true;
}
if(!Settings.my_gp.io[led1_gpio] && !led1_set){
Settings.my_gp.io[led1_gpio] = GPIO_LED1;
restart_flag = 2;
}
if(!Settings.my_gp.io[key1_gpio] && !key1_set){
Settings.my_gp.io[key1_gpio] = GPIO_KEY1;
restart_flag = 2;
}
}
TuyaRequestState();
break;
default:
AddLog_P(LOG_LEVEL_DEBUG, PSTR("TYA: Rcvd unknown command"));
}
}
/*********************************************************************************************\
* API Functions
\*********************************************************************************************/
boolean TuyaModuleSelected()
{
if (!(pin[GPIO_TUYA_RX] < 99) || !(pin[GPIO_TUYA_TX] < 99)) { // fallback to hardware-serial if not explicitly selected
pin[GPIO_TUYA_TX] = 1;
pin[GPIO_TUYA_RX] = 3;
Settings.my_gp.io[1] = GPIO_TUYA_TX;
Settings.my_gp.io[3] = GPIO_TUYA_RX;
restart_flag = 2;
}
light_type = LT_SERIAL;
return true;
}
void TuyaInit()
{
if (!Settings.param[P_TUYA_DIMMER_ID]) {
Settings.param[P_TUYA_DIMMER_ID] = TUYA_DIMMER_ID;
}
TuyaSerial = new TasmotaSerial(pin[GPIO_TUYA_RX], pin[GPIO_TUYA_TX], 2);
if (TuyaSerial->begin(9600)) {
if (TuyaSerial->hardwareSerial()) { ClaimSerial(); }
// Get MCU Configuration
snprintf_P(log_data, sizeof(log_data), "TYA: Request MCU configuration");
AddLog(LOG_LEVEL_DEBUG);
TuyaSendCmd(TUYA_CMD_MCU_CONF);
}
}
void TuyaSerialInput()
{
while (TuyaSerial->available()) {
yield();
byte serial_in_byte = TuyaSerial->read();
if (serial_in_byte == 0x55) { // Start TUYA Packet
tuya_cmd_status = 1;
tuya_buffer[tuya_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;
tuya_byte_counter = 0;
tuya_buffer[tuya_byte_counter++] = 0x55;
tuya_buffer[tuya_byte_counter++] = 0xAA;
tuya_cmd_checksum = 0xFF;
}
else if (tuya_cmd_status == 2){
if(tuya_byte_counter == 5){ // Get length of data
tuya_cmd_status = 3;
tuya_data_len = serial_in_byte;
}
tuya_cmd_checksum += serial_in_byte;
tuya_buffer[tuya_byte_counter++] = serial_in_byte;
}
else if ((tuya_cmd_status == 3) && (tuya_byte_counter == (6 + tuya_data_len)) && (tuya_cmd_checksum == serial_in_byte)){ // Compare checksum and process packet
tuya_buffer[tuya_byte_counter++] = serial_in_byte;
snprintf_P(log_data, sizeof(log_data), PSTR("TYA: Received Packet: \""));
for (int i = 0; i < tuya_byte_counter; i++) {
snprintf_P(log_data, sizeof(log_data), PSTR("%s%02x"), log_data, tuya_buffer[i]);
}
snprintf_P(log_data, sizeof(log_data), PSTR("%s\""), log_data);
AddLog(LOG_LEVEL_DEBUG);
TuyaPacketProcess();
tuya_byte_counter = 0;
tuya_cmd_status = 0;
tuya_cmd_checksum = 0;
tuya_data_len = 0;
} // read additional packets from TUYA
else if(tuya_byte_counter < TUYA_BUFFER_SIZE -1) { // add char to string if it still fits
tuya_buffer[tuya_byte_counter++] = serial_in_byte;
tuya_cmd_checksum += serial_in_byte;
} else {
tuya_byte_counter = 0;
tuya_cmd_status = 0;
tuya_cmd_checksum = 0;
tuya_data_len = 0;
}
}
}
boolean TuyaButtonPressed()
{
if (!XdrvMailbox.index && ((PRESSED == XdrvMailbox.payload) && (NOT_PRESSED == lastbutton[XdrvMailbox.index]))) {
snprintf_P(log_data, sizeof(log_data), PSTR("TYA: Reset GPIO triggered"));
AddLog(LOG_LEVEL_DEBUG);
TuyaResetWifi();
return true; // Reset GPIO served here
}
return false; // Don't serve other buttons
}
void TuyaSetWifiLed(){
uint8_t wifi_state = 0x02;
switch(WifiState()){
case WIFI_SMARTCONFIG:
wifi_state = 0x00;
break;
case WIFI_MANAGER:
case WIFI_WPSCONFIG:
wifi_state = 0x01;
break;
case WIFI_RESTART:
wifi_state = 0x03;
break;
}
snprintf_P(log_data, sizeof(log_data), "TYA: Set WiFi LED to state %d (%d)", wifi_state, WifiState());
AddLog(LOG_LEVEL_DEBUG);
TuyaSendCmd(TUYA_CMD_WIFI_STATE, &wifi_state, 1);
}
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
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:
if (TuyaSerial) { TuyaSerialInput(); }
break;
case FUNC_SET_DEVICE_POWER:
result = TuyaSetPower();
break;
case FUNC_BUTTON_PRESSED:
result = TuyaButtonPressed();
break;
case FUNC_EVERY_SECOND:
if(TuyaSerial && tuya_wifi_state!=WifiState()) { TuyaSetWifiLed(); }
break;
}
}
return result;
}
#endif // USE_TUYA_DIMMER
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