WLED/usermods/blynk_relay_control/wled06_usermod.ino

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/*
* This file allows you to add own functionality to WLED more easily
* See: https://github.com/Aircoookie/WLED/wiki/Add-own-functionality
* EEPROM bytes 2750+ are reserved for your custom use case. (if you extend #define EEPSIZE in wled_eeprom.h)
* bytes 2400+ are currently ununsed, but might be used for future wled features
*/
//Use userVar0 (API calls &U0=, uint16_t) to set relay state
#define relayPinState userVar0
//Use userVar1 (API calls &U1=, uint16_t) to set relay timer duration
//Ignored if 0, otherwise number of milliseconds to allow relay to stay in
//non default state.
#define relayTimerInterval userVar1
//Which pin is the relay connected to
#define RELAY_PIN 5
//Which pin state should the relay default to
#define RELAY_PIN_DEFAULT LOW
//If >0 The controller returns to RELAY_PIN_DEFAULT after this time in milliseconds
#define RELAY_PIN_TIMER_DEFAULT 3000
//Blynk virtual pin for controlling relay
#define BLYNK_USER_VAR0_PIN V9
//Blynk virtual pin for controlling relay timer
#define BLYNK_USER_VAR1_PIN V10
//Number of milliseconds between updating blynk
#define BLYNK_RELAY_UPDATE_INTERVAL 5000
//Is the timer for resetting the relay active
bool relayTimerStarted = false;
//millis() time after which relay will be reset
unsigned long relayTimeToDefault = 0;
//millis() time after which relay vars in Blynk will be sent
unsigned long relayBlynkUpdateTime = 0;
//gets called once at boot. Do all initialization that doesn't depend on network here
void userSetup()
{
relayPinState = RELAY_PIN_DEFAULT;
relayTimerInterval = RELAY_PIN_TIMER_DEFAULT;
pinMode(RELAY_PIN, OUTPUT);
digitalWrite(RELAY_PIN, relayPinState);
}
//gets called every time WiFi is (re-)connected. Initialize own network interfaces here
void userConnected()
{
}
//loop. You can use "if (WLED_CONNECTED)" to check for successful connection
void userLoop()
{
//Normalize relayPinState to an accepted value
if (relayPinState != HIGH && relayPinState != LOW) {
relayPinState = RELAY_PIN_DEFAULT;
}
//If relay changes and relayTimerInterval is set, start a timer to change back
if (relayTimerInterval != 0 &&
relayPinState != RELAY_PIN_DEFAULT &&
!relayTimerStarted ) {
relayTimerStarted = true;
relayTimeToDefault = millis() + relayTimerInterval;
}
//If manually changed back to default, cancel timer
if (relayTimerStarted && relayPinState == RELAY_PIN_DEFAULT ) {
relayTimerStarted = false;
}
//If timer completes, set relay back to default
if (relayTimerStarted && millis() > relayTimeToDefault) {
relayPinState = RELAY_PIN_DEFAULT;
relayTimerStarted = false;
}
digitalWrite(RELAY_PIN, relayPinState);
updateRelayBlynk();
}
//Update Blynk with state of userVars at BLYNK_RELAY_UPDATE_INTERVAL
void updateRelayBlynk()
{
if (!WLED_CONNECTED) return;
if (relayBlynkUpdateTime > millis()) return;
Blynk.virtualWrite(BLYNK_USER_VAR0_PIN, userVar0);
Blynk.virtualWrite(BLYNK_USER_VAR1_PIN, userVar1);
relayBlynkUpdateTime = millis() + BLYNK_RELAY_UPDATE_INTERVAL;
}
//Add Blynk callback for setting userVar0
BLYNK_WRITE(BLYNK_USER_VAR0_PIN)
{
userVar0 = param.asInt();
}
//Add Blynk callback for setting userVar1
BLYNK_WRITE(BLYNK_USER_VAR1_PIN)
{
userVar1 = param.asInt();
}