ACM Host: get the hex values in CDC_DATA_IN

[padaszewski]

Hello,

I'm using the acm host example. I've managed to establish the communication between the host (ESP32 S3) and device, but I'm not retriving the expected output from the device.

Some logs:

[744950][I][acm.ino:118] loop(): Send sth
[744950][I][acm.ino:29] acm_events(): CDC_DATA_OUT
[744967][I][acm.ino:20] acm_events(): CDC_DATA_IN, 5
---here should be the cdc_data_in output printed ---

[744950][I][acm.ino:118] loop(): Send sth else
[744950][I][acm.ino:29] acm_events(): CDC_DATA_OUT
[744967][I][acm.ino:20] acm_events(): CDC_DATA_IN, 67
---here should be the cdc_data_in output printed again ---

I'm expecting to retrive a array of hex values, like 00 01 00 0a ..., but I'm unable to perform the mapping. This needs probably to be done here: (Btw what is the cf-Argument in the setLineCoding function?)

void acm_events(int event, void *data, size_t len)
{
  switch (event)
  {
    case CDC_CTRL_SET_CONTROL_LINE_STATE:
      log_i("CDC_CTRL_SET_CONTROL_LINE_STATE");
      device->setLineCoding(9600, 0, 0, 8);
      break;

    case CDC_DATA_IN:
      {
        log_i("CDC_DATA_IN, %d", len);
        device->INDATA();
        //here Im trying to find a solution
        uint8_t *buf = (uint8_t *)data;
        printf("%x", *buf);
        //buf[len] = 0;
        //printf("%x", (uint8_t *)data);
        break;
      }
    case CDC_DATA_OUT:
      log_i("CDC_DATA_OUT");
      break;

    case CDC_CTRL_SET_LINE_CODING:
      log_i("CDC_CTRL_SET_LINE_CODING");
      break;
  }
}

Actually after each CDC_DATA_OUT I should retrive a CDC_DATA_IN response, but this is not the case. Can it be this function again?

Greets!