Request on demo which retargets log to USB port

[OldXiao]

I'm studying with PCA10059,trying to build a gateway between BLE peripherals &  PC.

For PCA10059 has build-in USB socket,and I will plug them into PC's USB ports at last, it will be nice to output log to USB port too.

Would Nordic provide a demo on this?just re-target log to USB port,so can I go on base on that.

My basic thought:

1) application data & log sharing the same USB channel;

2) Differentiate them with packet type.

I can monitor BLE peripherals with this technical too.

[OldXiao]

I have enabled UART log output,but not traced into each line.

OK, I will trace it later.

close this ticket pls. 

Thank you.

[OldXiao]

Tried, found something,but don't know why.

First of all,we'd better devide the function into 2 parts:

1)create instance

void usb_init(void)
{
	
	  ret_code_t ret;
    static const app_usbd_config_t usbd_config = {
        .ev_state_proc = usbd_user_ev_handler
    };
	
    app_usbd_serial_num_generate();
    ret = app_usbd_init(&usbd_config);
    APP_ERROR_CHECK(ret);
    app_usbd_class_inst_t const * class_cdc_acm = app_usbd_cdc_acm_class_inst_get(&m_app_cdc_acm);
    ret = app_usbd_class_append(class_cdc_acm);
    APP_ERROR_CHECK(ret);
}

2)start USB

void usb_start(void)
{
    ret_code_t ret;
	
		if (USBD_POWER_DETECTION)
    {
        ret = app_usbd_power_events_enable();
        APP_ERROR_CHECK(ret);
    }
    else
    {
        NRF_LOG_INFO("No USB power detection enabled\r\nStarting USB now");

        app_usbd_enable();
        app_usbd_start();
    }
}

In main.c, usb_init() must call before ble_stack_init() :

int main(void)
{
    log_init();
    timer_init();
    leds_init();
    buttons_init();
    power_management_init();
	
	  usb_init();//must before ble_stack_init();
	
    ble_stack_init();
    gatt_init();
    db_discovery_init();
    gtoi_c_init();
    ble_conn_state_init();
    scan_init();
    scan_start();
	
		usb_start();

    for (;;)
    {
			  while (app_usbd_event_queue_process())
        {
            /* Nothing to do */
        }
				
        idle_state_handle();
    }
}

I did not dig further,anyone interested can go on.