using modem on one core, and another I2C device on another

[Bfreak]

Hi. I am trying to run an MQTT script on one core, and read data from another i2c device on the other core, using freertos to do so.

When I try to do this, I get 'failed to initialize power' from the modem.

The MQTT tasks has default code:

void MQTT_task_setup(void *pvParameters) {

    Serial.begin(115200);

    //Start while waiting for Serial monitoring
    while (!Serial);

    vTaskDelay(3000);

    Serial.println();

    if (!PMU.begin(Wire, AXP2101_SLAVE_ADDRESS, I2C_SDA, I2C_SCL)) {
        Serial.println("Failed to initialize power.....");
        while (1) {
            vTaskDelay(5000);
        }
    }

and the other i2c has code

void hall_task_setup(void *Parameter) {
  Serial.println("Starting Hall_get setup");

  Wire.begin(13, 21); 

  if (! sensor.begin_I2C()) {    
  //if (! sensor.begin_SPI(MLX90393_CS)) {  // hardware SPI mode
    Serial.println("No sensor found ... check your wiring?");
    while (1) { vTaskDelay(10); }
  }
  Serial.println("Found a MLX90393 sensor");

Both can run independantly using freertos. Any suggestions? Thanks.

[lewisxhe]

There is only one Wire. You initialized it twice. Of course it cannot run. You need to change one to Wire1.

[lewisxhe]

According to the question you raised, https://github.com/Xinyuan-LilyGO/LilyGo-T-SIM7080G/issues/65, you directly pass the PMU initialization to Wire1, so that your sensors will not conflict

[Bfreak]

thanks @lewisxhe but I have a new problem: I currently can only upload script when I connect via usb holding boot button , but get nothing in terminal. When I try and connect without boot I get either *** [upload] Error 1 or error 13: could not open port when I try and open any connection. Any suggestion?

[lewisxhe]

README Tips 15

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