Can I modify source code for the vitual com of nRF52833 USB CDC ACM in \examples\peripheral\usbd_cdc_acm?

[Tomlee]

Hi, 

   we are using D- and D+ in our nRf52833 board,    I want to use the CDC ACM USB class  as Virtual COM port.

  I found that there has a demo example in the \examples\peripheral\usbd_cdc_acm,  but it is only used for nRf52840,  

  Could I modify it for nRF52833?

[Simonr]

What does the initialize() and start() functions call to exactly? I need some details as to what they do. Do you see the same error if you call the initialize() but not start()? 

Best regards,

Simon

[Tomlee]

Hi Simonr,

    initialize() and start()  are about Mesh

static void mesh_init(void)
{
    mesh_stack_init_params_t init_params =
    {
        .core.irq_priority       = NRF_MESH_IRQ_PRIORITY_LOWEST,
        .core.lfclksrc           = DEV_BOARD_LF_CLK_CFG,
        .models.config_server_cb = config_server_evt_cb
    };

    uint32_t status = mesh_stack_init(&init_params, &m_device_provisioned);
    switch (status)
    {
        case NRF_ERROR_INVALID_DATA:
            __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Data in the persistent memory was corrupted. Device starts as unprovisioned.\n");
            __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Reset device before starting of the provisioning process.\n");
            break;
        case NRF_SUCCESS:
            break;
        default:
            ERROR_CHECK(status);
    }

#if 1//NRF_MESH_SERIAL_ENABLE
    ERROR_CHECK(nrf_mesh_serial_init(NULL));
#endif

    m_evt_handler.evt_cb = mesh_evt_handler;
    nrf_mesh_evt_handler_add(&m_evt_handler);
}

static void initialize(void)
{
    ERROR_CHECK(app_timer_init());
    hal_leds_init();

    __LOG_INIT(LOG_MSK_DEFAULT | LOG_SRC_DFU | LOG_SRC_APP | LOG_SRC_SERIAL, LOG_LEVEL_INFO, log_callback_rtt);
    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "----- Bluetooth Mesh DFU Example -----\n");

    ble_stack_init();

    mesh_init();

    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Initialization complete!\n");
}

static void start(void)
{
    if (!m_device_provisioned)
    {
        static const uint8_t static_auth_data[NRF_MESH_KEY_SIZE] = STATIC_AUTH_DATA;
        mesh_provisionee_start_params_t prov_start_params =
        {
            .p_static_data = static_auth_data,
            .prov_complete_cb = NULL,
            .prov_device_identification_start_cb = NULL,
            .prov_device_identification_stop_cb = NULL,
            .prov_abort_cb = NULL,
            .p_device_uri = EX_URI_DFU
        };
        ERROR_CHECK(mesh_provisionee_prov_start(&prov_start_params));
    }

#if 1//NRF_MESH_SERIAL_ENABLE
    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Enabling serial interface...\n");
    ERROR_CHECK(nrf_mesh_serial_enable());
#endif

    mesh_app_uuid_print(nrf_mesh_configure_device_uuid_get());

    ERROR_CHECK(mesh_stack_start());

    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "DFU with usb driver example started!\n");
    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "bootloader_id is 255\n");
    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "application_id is 255\n");
    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "other is same with srd3_radar_sensor\n");
}