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mhsw-espurna/code/espurna/relay.ino

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/*
RELAY MODULE
Copyright (C) 2016-2017 by Xose Pérez <xose dot perez at gmail dot com>
*/
#include <EEPROM.h>
#include <Ticker.h>
#include <ArduinoJson.h>
#include <vector>
#include <functional>
typedef struct {
unsigned char pin;
bool reverse;
unsigned char led;
} relay_t;
std::vector<relay_t> _relays;
Ticker pulseTicker;
bool recursive = false;
#if RELAY_PROVIDER == RELAY_PROVIDER_DUAL
unsigned char _dual_status = 0;
#endif
// -----------------------------------------------------------------------------
// RELAY PROVIDERS
// -----------------------------------------------------------------------------
void relayProviderStatus(unsigned char id, bool status) {
#if RELAY_PROVIDER == RELAY_PROVIDER_DUAL
_dual_status ^= (1 << id);
Serial.flush();
Serial.write(0xA0);
Serial.write(0x04);
Serial.write(_dual_status);
Serial.write(0xA1);
Serial.flush();
#endif
#if RELAY_PROVIDER == RELAY_PROVIDER_LIGHT
lightState(status);
#endif
#if RELAY_PROVIDER == RELAY_PROVIDER_RELAY
digitalWrite(_relays[id].pin, _relays[id].reverse ? !status : status);
#endif
}
bool relayProviderStatus(unsigned char id) {
#if RELAY_PROVIDER == RELAY_PROVIDER_DUAL
if (id >= 2) return false;
return ((_dual_status & (1 << id)) > 0);
#endif
#if RELAY_PROVIDER == RELAY_PROVIDER_LIGHT
return lightState();
#endif
#if RELAY_PROVIDER == RELAY_PROVIDER_RELAY
if (id >= _relays.size()) return false;
bool status = (digitalRead(_relays[id].pin) == HIGH);
return _relays[id].reverse ? !status : status;
#endif
}
// -----------------------------------------------------------------------------
// RELAY
// -----------------------------------------------------------------------------
String relayString() {
DynamicJsonBuffer jsonBuffer;
JsonObject& root = jsonBuffer.createObject();
JsonArray& relay = root.createNestedArray("relayStatus");
for (unsigned char i=0; i<relayCount(); i++) {
relay.add(relayStatus(i));
}
String output;
root.printTo(output);
return output;
}
bool relayStatus(unsigned char id) {
return relayProviderStatus(id);
}
void relayPulse(unsigned char id) {
byte relayPulseMode = getSetting("relayPulseMode", RELAY_PULSE_MODE).toInt();
if (relayPulseMode == RELAY_PULSE_NONE) return;
bool status = relayStatus(id);
bool pulseStatus = (relayPulseMode == RELAY_PULSE_ON);
if (pulseStatus == status) {
pulseTicker.detach();
return;
}
pulseTicker.once(
getSetting("relayPulseTime", RELAY_PULSE_TIME).toInt(),
relayToggle,
id
);
}
unsigned int relayPulseMode() {
unsigned int value = getSetting("relayPulseMode", RELAY_PULSE_MODE).toInt();
return value;
}
void relayPulseMode(unsigned int value, bool report) {
setSetting("relayPulseMode", value);
/*
if (report) {
char topic[strlen(MQTT_TOPIC_RELAY) + 10];
sprintf(topic, "%s/pulse", MQTT_TOPIC_RELAY);
char value[2];
sprintf(value, "%d", value);
mqttSend(topic, value);
}
*/
char message[20];
sprintf(message, "{\"relayPulseMode\": %d}", value);
wsSend(message);
}
void relayPulseMode(unsigned int value) {
relayPulseMode(value, true);
}
void relayPulseToggle() {
unsigned int value = relayPulseMode();
value = (value == RELAY_PULSE_NONE) ? RELAY_PULSE_OFF : RELAY_PULSE_NONE;
relayPulseMode(value);
}
bool relayStatus(unsigned char id, bool status, bool report) {
if (id >= _relays.size()) return false;
bool changed = false;
if (relayStatus(id) != status) {
DEBUG_MSG_P(PSTR("[RELAY] %d => %s\n"), id, status ? "ON" : "OFF");
changed = true;
relayProviderStatus(id, status);
if (_relays[id].led > 0) {
ledStatus(_relays[id].led - 1, status);
}
if (report) relayMQTT(id);
if (!recursive) {
relayPulse(id);
relaySync(id);
relaySave();
relayWS();
}
#if ENABLE_DOMOTICZ
relayDomoticzSend(id);
#endif
}
return changed;
}
bool relayStatus(unsigned char id, bool status) {
return relayStatus(id, status, true);
}
void relaySync(unsigned char id) {
if (_relays.size() > 1) {
recursive = true;
byte relaySync = getSetting("relaySync", RELAY_SYNC).toInt();
bool status = relayStatus(id);
// If RELAY_SYNC_SAME all relays should have the same state
if (relaySync == RELAY_SYNC_SAME) {
for (unsigned short i=0; i<_relays.size(); i++) {
if (i != id) relayStatus(i, status);
}
// If NONE_OR_ONE or ONE and setting ON we should set OFF all the others
} else if (status) {
if (relaySync != RELAY_SYNC_ANY) {
for (unsigned short i=0; i<_relays.size(); i++) {
if (i != id) relayStatus(i, false);
}
}
// If ONLY_ONE and setting OFF we should set ON the other one
} else {
if (relaySync == RELAY_SYNC_ONE) {
unsigned char i = (id + 1) % _relays.size();
relayStatus(i, true);
}
}
recursive = false;
}
}
void relaySave() {
unsigned char bit = 1;
unsigned char mask = 0;
for (unsigned int i=0; i < _relays.size(); i++) {
if (relayStatus(i)) mask += bit;
bit += bit;
}
EEPROM.write(EEPROM_RELAY_STATUS, mask);
EEPROM.commit();
}
void relayRetrieve(bool invert) {
recursive = true;
unsigned char bit = 1;
unsigned char mask = invert ? ~EEPROM.read(EEPROM_RELAY_STATUS) : EEPROM.read(EEPROM_RELAY_STATUS);
for (unsigned int i=0; i < _relays.size(); i++) {
relayStatus(i, ((mask & bit) == bit));
bit += bit;
}
if (invert) {
EEPROM.write(EEPROM_RELAY_STATUS, mask);
EEPROM.commit();
}
recursive = false;
}
void relayToggle(unsigned char id) {
if (id >= _relays.size()) return;
relayStatus(id, !relayStatus(id));
}
unsigned char relayCount() {
return _relays.size();
}
//------------------------------------------------------------------------------
// REST API
//------------------------------------------------------------------------------
void relaySetupAPI() {
// API entry points (protected with apikey)
for (unsigned int relayID=0; relayID<relayCount(); relayID++) {
char url[15];
sprintf(url, "/api/relay/%d", relayID);
char key[10];
sprintf(key, "relay%d", relayID);
apiRegister(url, key,
[relayID](char * buffer, size_t len) {
snprintf(buffer, len, "%d", relayStatus(relayID) ? 1 : 0);
},
[relayID](const char * payload) {
unsigned int value = payload[0] - '0';
if (value == 2) {
relayToggle(relayID);
} else {
relayStatus(relayID, value == 1);
}
}
);
}
}
//------------------------------------------------------------------------------
// WebSockets
//------------------------------------------------------------------------------
void relayWS() {
String output = relayString();
wsSend(output.c_str());
}
//------------------------------------------------------------------------------
// Domoticz
//------------------------------------------------------------------------------
#if ENABLE_DOMOTICZ
void relayDomoticzSend(unsigned int relayID) {
char buffer[15];
sprintf(buffer, "dczRelayIdx%d", relayID);
domoticzSend(buffer, relayStatus(relayID) ? "1" : "0");
}
int relayFromIdx(unsigned int idx) {
for (int relayID=0; relayID<relayCount(); relayID++) {
if (relayToIdx(relayID) == idx) {
return relayID;
}
}
return -1;
}
int relayToIdx(unsigned int relayID) {
char buffer[15];
sprintf(buffer, "dczRelayIdx%d", relayID);
return getSetting(buffer).toInt();
}
void relayDomoticzSetup() {
mqttRegister([](unsigned int type, const char * topic, const char * payload) {
String dczTopicOut = getSetting("dczTopicOut", DOMOTICZ_OUT_TOPIC);
if (type == MQTT_CONNECT_EVENT) {
mqttSubscribeRaw(dczTopicOut.c_str());
}
if (type == MQTT_MESSAGE_EVENT) {
// Check topic
if (dczTopicOut.equals(topic)) {
// Parse response
DynamicJsonBuffer jsonBuffer;
JsonObject& root = jsonBuffer.parseObject((char *) payload);
if (!root.success()) {
DEBUG_MSG_P(PSTR("[DOMOTICZ] Error parsing data\n"));
return;
}
// IDX
unsigned long idx = root["idx"];
int relayID = relayFromIdx(idx);
if (relayID >= 0) {
unsigned long value = root["nvalue"];
DEBUG_MSG_P(PSTR("[DOMOTICZ] Received value %d for IDX %d\n"), value, idx);
relayStatus(relayID, value == 1);
}
}
}
});
}
#endif
//------------------------------------------------------------------------------
// MQTT
//------------------------------------------------------------------------------
void relayMQTT(unsigned char id) {
if (id >= _relays.size()) return;
mqttSend(MQTT_TOPIC_RELAY, id, relayStatus(id) ? "1" : "0");
}
void relayMQTT() {
for (unsigned int i=0; i < _relays.size(); i++) {
relayMQTT(i);
}
}
void relayMQTTCallback(unsigned int type, const char * topic, const char * payload) {
if (type == MQTT_CONNECT_EVENT) {
#if not MQTT_REPORT_RELAY
relayMQTT();
#endif
char buffer[strlen(MQTT_TOPIC_RELAY) + 3];
sprintf(buffer, "%s/+", MQTT_TOPIC_RELAY);
mqttSubscribe(buffer);
}
if (type == MQTT_MESSAGE_EVENT) {
// Match topic
String t = mqttSubtopic((char *) topic);
if (!t.startsWith(MQTT_TOPIC_RELAY)) return;
// Get value
unsigned int value = (char)payload[0] - '0';
// Pulse topic
if (t.endsWith("pulse")) {
relayPulseMode(value, mqttForward());
return;
}
// Get relay ID
unsigned int relayID = t.substring(strlen(MQTT_TOPIC_RELAY)+1).toInt();
if (relayID >= relayCount()) {
DEBUG_MSG_P(PSTR("[RELAY] Wrong relayID (%d)\n"), relayID);
return;
}
// Action to perform
if (value == 2) {
relayToggle(relayID);
} else {
relayStatus(relayID, value > 0, mqttForward());
}
}
}
void relaySetupMQTT() {
mqttRegister(relayMQTTCallback);
}
//------------------------------------------------------------------------------
// Setup
//------------------------------------------------------------------------------
void relaySetup() {
#if defined(SONOFF_DUAL)
// Two dummy relays for the dual
_relays.push_back((relay_t) {0, 0});
_relays.push_back((relay_t) {0, 0});
#elif defined(AI_LIGHT)
// One dummy relay for the AI Thinker Light
_relays.push_back((relay_t) {0, 0});
#else
#ifdef RELAY1_PIN
_relays.push_back((relay_t) { RELAY1_PIN, RELAY1_PIN_INVERSE, RELAY1_LED });
#endif
#ifdef RELAY2_PIN
_relays.push_back((relay_t) { RELAY2_PIN, RELAY2_PIN_INVERSE, RELAY2_LED });
#endif
#ifdef RELAY3_PIN
_relays.push_back((relay_t) { RELAY3_PIN, RELAY3_PIN_INVERSE, RELAY3_LED });
#endif
#ifdef RELAY4_PIN
_relays.push_back((relay_t) { RELAY4_PIN, RELAY4_PIN_INVERSE, RELAY4_LED });
#endif
#endif
byte relayMode = getSetting("relayMode", RELAY_MODE).toInt();
for (unsigned int i=0; i < _relays.size(); i++) {
pinMode(_relays[i].pin, OUTPUT);
if (relayMode == RELAY_MODE_OFF) relayStatus(i, false);
if (relayMode == RELAY_MODE_ON) relayStatus(i, true);
}
if (relayMode == RELAY_MODE_SAME) relayRetrieve(false);
if (relayMode == RELAY_MODE_TOOGLE) relayRetrieve(true);
relaySetupAPI();
relaySetupMQTT();
#if ENABLE_DOMOTICZ
relayDomoticzSetup();
#endif
DEBUG_MSG_P(PSTR("[RELAY] Number of relays: %d\n"), _relays.size());
}