RE: How to combine USB CDC ACM and MODEL

user20690 — Tue, 10 May 2022 19:02:34 GMT

Thanks for sharing the solution.

You are welcome to post a new ticket if you have any further questions.

Br,
Joakim

RE: How to combine USB CDC ACM and MODEL

user115809 — Fri, 06 May 2022 13:11:36 GMT

Hi!

Joakim,Thanks for your reply.

Now I have solved this problem by using a timer.

APP_TIMER_DEF(zqaking_timer_id);

static void zqaking_app_timer_handler(void * p_unused)
{   
    if (DataChange)
    {
        DataChange = false;
        uint32_t status;

        app_usbd_cdc_acm_write(&m_app_cdc_acm, my_data_buffer, my_data_buffer_lenght);
        status = hx_model_client_opcode_tx_unreliable(&m_hx_model_client[0], my_data_buffer, my_data_buffer_lenght, APP_UNACK_MSG_REPEAT_COUNT);
    }
}

static void start(void)
{
    ···
    ERROR_CHECK(app_timer_create(&zqaking_timer_id, APP_TIMER_MODE_REPEATED, zqaking_app_timer_handler));
    ERROR_CHECK(app_timer_start(zqaking_timer_id, 6000, NULL));
    ···
}

following is USB CDC ACM rx event:

case APP_USBD_CDC_ACM_USER_EVT_RX_DONE:
        {
            ret_code_t ret;
            static uint8_t index = 0;
            index++;

            do
            {
                if ((m_cdc_data_array[index - 1] == '\n') ||
                    (m_cdc_data_array[index - 1] == '\r') ||
                    (index >= (244)))
                {
                    if (index > 1)
                    {   
                        nrf_gpio_pin_toggle(BSP_LED_0);
                        uint16_t length = (uint16_t)index;
                        if (length + sizeof(ENDLINE_STRING) < 244)
                        {
                            memcpy(m_cdc_data_array + length, ENDLINE_STRING, sizeof(ENDLINE_STRING));
                            length += sizeof(ENDLINE_STRING);
                        }
                        memcpy(my_data_buffer, m_cdc_data_array, length);
                        my_data_buffer_lenght = length;
                        DataChange = true;
                    }

                    index = 0;
                }
                /* Fetch data until internal buffer is empty */
                ret = app_usbd_cdc_acm_read(&m_app_cdc_acm,
                                            &m_cdc_data_array[index],
                                            1);
                if (ret == NRF_SUCCESS)
                {
                    index++;
                }
            }
            while (ret == NRF_SUCCESS);

            break;
        }

I add a timer to check for changes in variable DATACHANGE, and this makes my program works well.
Although I don't know the reason yet, I think there should be some kind of conflict between MESH and USB CDC ACM.

RE: How to combine USB CDC ACM and MODEL

user20690 — Thu, 05 May 2022 11:31:28 GMT

Hello!

All four leds on would indicate you have run into some kind of error. Do you have any log output with error messages, or an error code?

You are running into an error inside generic_onoff_client_set_unack()?

Br,
Joakim