Fork of the espurna firmware for `mhsw` switches
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/*
UART_MQTT MODULE
Copyright (C) 2018 by Albert Weterings
Adapted by Xose Pérez <xose dot perez at gmail dot com>
*/
#if UART_MQTT_SUPPORT
char _uartmqttBuffer[UART_MQTT_BUFFER_SIZE];
bool _uartmqttNewData = false;
#if UART_MQTT_USE_SOFT
#include <SoftwareSerial.h>
SoftwareSerial _uart_mqtt_serial(UART_MQTT_RX_PIN, UART_MQTT_TX_PIN, false, UART_MQTT_BUFFER_SIZE);
#define UART_MQTT_PORT _uart_mqtt_serial
#else
#define UART_MQTT_PORT UART_MQTT_HW_PORT
#endif
// -----------------------------------------------------------------------------
// Private
// -----------------------------------------------------------------------------
void _uartmqttReceiveUART() {
static unsigned char ndx = 0;
while (UART_MQTT_PORT.available() > 0 && _uartmqttNewData == false) {
char rc = UART_MQTT_PORT.read();
if (rc != UART_MQTT_TERMINATION) {
_uartmqttBuffer[ndx] = rc;
if (ndx < UART_MQTT_BUFFER_SIZE - 1) ndx++;
} else {
_uartmqttBuffer[ndx] = '\0';
_uartmqttNewData = true;
ndx = 0;
}
}
}
void _uartmqttSendMQTT() {
if (_uartmqttNewData == true && MQTT_SUPPORT) {
DEBUG_MSG_P(PSTR("[UART_MQTT] Send data over MQTT: %s\n"), _uartmqttBuffer);
mqttSend(MQTT_TOPIC_UARTIN, _uartmqttBuffer);
_uartmqttNewData = false;
}
}
void _uartmqttSendUART(const char * message) {
DEBUG_MSG_P(PSTR("[UART_MQTT] Send data over UART: %s\n"), message);
UART_MQTT_PORT.println(message);
}
void _uartmqttMQTTCallback(unsigned int type, const char * topic, const char * payload) {
if (type == MQTT_CONNECT_EVENT) {
mqttSubscribe(MQTT_TOPIC_UARTOUT);
}
if (type == MQTT_MESSAGE_EVENT) {
// Match topic
String t = mqttMagnitude((char *) topic);
if (t.equals(MQTT_TOPIC_UARTOUT)) {
_uartmqttSendUART(payload);
}
}
}
// -----------------------------------------------------------------------------
// SETUP & LOOP
// -----------------------------------------------------------------------------
void _uartmqttLoop() {
_uartmqttReceiveUART();
_uartmqttSendMQTT();
}
void uartmqttSetup() {
// Init port
UART_MQTT_PORT.begin(UART_MQTT_BAUDRATE);
// Register MQTT callbackj
mqttRegister(_uartmqttMQTTCallback);
// Register loop
espurnaRegisterLoop(_uartmqttLoop);
}
#endif // UART_MQTT_SUPPORT