will/MultiSoilMoistureSensor
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Use deep sleep to save battery

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This commit is contained in:
Will Bradley 2025-02-13 11:41:05 -08:00
parent 4646a78a93
commit 9205ef1ef5
Signed by: will
GPG Key ID: 1159B930701263F3
1 changed files with 26 additions and 8 deletions
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30
MultiSoilMoistureSensor.ino
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@ -12,7 +12,8 @@ EspMQTTClient client(
"espmqtt" // Client name that uniquely identify your device
);
#define reportingInterval 10000 // how often to sample/publish, in milliseconds
#define maxUptime 60*1000 // how long to stay awake to measure and report before sleeping
#define reportingInterval 10*60*1000 // how often to sample/publish, in milliseconds
#define PIN_RESET 4
#define LED_BUILTIN 0 // ESP32
//#define LED_BUILTIN 13 // Teensy
@ -28,6 +29,7 @@ int pin_SDA = 15;
int pin_SCL = 5;
unsigned long last_run = 0;
bool useOled = true;
void onConnectionEstablished() {
client.publish("esp/status", "{\"status\": \"connected\"}");
@ -51,9 +53,12 @@ void setup() {
Wire.begin(pin_SDA, pin_SCL); //Qwiic Pro Mini
if (!oled.begin()){
Serial.println("Failed to initialize OLED");
useOled = false;
}
delay(1000); // Delay 1000 ms
esp_sleep_enable_timer_wakeup(10*60*1000*1000); // 10 minutes
}
// 0-based index read
@ -78,9 +83,9 @@ bool readAndPublishSensor(int i) {
Serial.print(" - ");
Serial.println(sensorText);
// show on LED with 1-based plant number and 0-100%
// show on OLED with 1-based plant number and 0-100%
snprintf(sensorText, 31, "%d: %d%%", n, sensorPercent);
oled.text(0, n*8, sensorText);
if (useOled) oled.text(0, n*8, sensorText);
return sensorPercent > 50; // over 50% is true/good, under 50% is false/bad
}
@ -88,9 +93,12 @@ bool readAndPublishSensor(int i) {
// the loop function runs over and over again forever
void loop() {
unsigned long time_trigger = millis();
if (last_run == 0 || time_trigger-last_run > reportingInterval) {
// report on first run
if (last_run == 0) {
if (useOled) {
oled.erase();
oled.text(0, 0, "Water:");
}
bool showLed = false;
// read + output plant sensors
for(int i=0;i<(sizeof(plantPin)/sizeof(plantPin[0]));i++){
@ -105,9 +113,19 @@ void loop() {
digitalWrite(LED_BUILTIN, LOW);
}
oled.display();
if (useOled) oled.display();
last_run = time_trigger;
}
client.loop();
if (time_trigger > maxUptime) {
Serial.print("Sleeping now.");
delay(1000);
Serial.flush();
esp_deep_sleep_start();
Serial.print("You can't see this because I'm asleep.");
}
if (time_trigger-last_run > reportingInterval) {
Serial.print("Stayed online for a full reporting interval without sleeping or resetting, something is wrong");
}
client.loop(); // Do MQTT work
sleep(1);
}