translate ARDUINO to Espeasy

[espgraf]

I want to monitor the external powersupply and battery for an ESP32-DevKit-Lipo-EA from Olimex.
ESPEasy with ESP_Easy_mega_20240414_collection_B_ESP32_4M316k is running fine.

i found an ARDUINO code piece and not sure how the setup in Espeasy should be:

Code: Select all

//demonstration for power sense and battery sense
//for Olimex ESP32-POE and ESP32-POE-ISO
//for other boards you might need to change pins in define
//some other boards might require hardware adjustments to
//enable power sense or/and battery sense

#define POWER_SENSE 39
#define BATTERY 35

void setup()
{
  Serial.begin (115200);
  pinMode (POWER_SENSE, INPUT);
  pinMode (BATTERY, INPUT);
}

void loop()
{
  Serial.print ("External power sense: ");
  Serial.println (digitalRead (POWER_SENSE));

  Serial.print ("Battery measurement: ");
  Serial.print (analogReadMilliVolts (BATTERY)*2);
  Serial.println (" mV");

  Serial.println ();

  delay (250);
}

I already tried it with devices - Analog input - internal for both cases.
At least for POWER_SENSE i get values >4000 when power is provided via USB. A bit wondering as in the script above it uses digitalRead for this.
For the Battery the values are always 0

Any hint how to translate the code into ESPEasy (most probably devices)?

[Ath]

POWER_SENSE (pin 39) is most likely an On/Off like signal, to indicate what the current power-source is.
BATTERY (pin 35) would be the current battery-voltage-level, that is read via analogReadMilliVolts(), and multiplied by 2 to get the actual voltage, AFAICS.

So if you change your analog task configuration to read GPIO 35 you should be seeing a more acceptable value.

[TD-er]

Also make sure to only use analog pins which are wired internally to ADC1 and not ADC2.
ADC2 is shared with WiFi, and thus if you have WiFi enabled, you will get nonsense values.

[espgraf]

Thanks Ath,
not sure what should i change for the Battery, here is my current setup:

Screenshot 2024-07-31 154507.png (131.94 KiB) Viewed 7855 times

for POWER_SENSE you are talking about On/Off signal, is there an specific device type what i should use or is it about to interpret to values eg. eversing above 3500 is treated as on,
here my current setup for this:

[Ath]

For POWER_SENSE you could use a Switch task, that can represent the Off or On state of the GPIO, showing a 0 or 1.
Most likely it will change from On to Off when the external power is removed, and the device is actually running from battery-power (assuming a sufficiently charged rechargeable battery is connected).

[espgraf]

i tried a Switch task, but does not work most probably as the lower voltage is around 350 mV.
I tried the "Regulator - Level Control" and it works like expected. Here you can set the level for on/off

[Ath]

Hm, you are trying to use GPIO 39 as an output pin from the Regulator, but that pin is restricted to input only The selector shouldn't offer input-only pins as an option, so that's a code-change waiting to happen (but there is already a PR on that plugin so that will have to wait a bit).
For the regulator to work you don't need to configure a GPIO pin, it can also be handled by rules (only).

[espgraf]

this is input only, the board provides via this GPIO the external voltage to check whether there is an external power supply available

[Ath]

this is input only, ...

In that case, that setting should be "none"!

[espgraf]

after reading the documentation carefully again your are right, the GPIO-Pin should not be updated, i just want the reporting via MQTT.