DFU serial failed

RE: DFU serial failed

Adam Varga — Thu, 21 Jul 2022 07:40:50 GMT

Could you elaborate? I have the same issue.

RE: DFU serial failed

schef — Tue, 19 Nov 2019 14:43:01 GMT

There was error not connected to uart but to the flash. So this is resolved.

RE: DFU serial failed

Hung Bui — Mon, 18 Nov 2019 04:46:15 GMT

Have you tried to call nrf_drv_uart_uninit() before you init uart again ?

Could you check in the info if there is a file name and line number, error code ?

RE: DFU serial failed

schef — Thu, 14 Nov 2019 13:21:39 GMT

Is it possible to recover from this issue using software only? Reinit uart and repeat the packet. CRC will fail and then i can try to send it again.

I tried to enable nrf_drv_uart_rx but after that i got <error> app: Received a fault! id: 0x00004002, pc: 0x00000000, info: 0x2003FEF8

do you have any suggestions?

RE: DFU serial failed

Hung Bui — Tue, 19 Mar 2019 10:02:53 GMT

You are right. It's the UART ERROR and bit 3 is Framing error. You can to monitor the UART communication with a logic analyzer to look for the error. Do you have a long UART cable/track ? any parasitic capacitance ?

RE: DFU serial failed

schef — Tue, 19 Mar 2019 07:40:16 GMT

Framing error as described here http://ltxfaq.custhelp.com/app/answers/detail/a_id/85/~/serial-port-framing-errors is some HW staff which has sense because on one board i don't have this errors and on another i have (i found that out yesterday).

I have no flow control, and baud-rate used is 9600.

RE: DFU serial failed

schef — Tue, 19 Mar 2019 07:33:20 GMT

Are you sure that Error 0x04 in:

static void uart_event_handler(nrf_drv_uart_event_t * p_event, void * p_context)
{
    switch (p_event->type)
    {
        case NRF_DRV_UART_EVT_TX_DONE:
            nrf_dfu_req_handler_reset_if_dfu_complete();
            break;

        case NRF_DRV_UART_EVT_RX_DONE:
            ...
            break;

        case NRF_DRV_UART_EVT_ERROR: {
	        APP_ERROR_HANDLER(p_event->data.error.error_mask);
            break;
            }
    }
}

is not based on enum nrf_uart_error_mask_t which would be NRF_UART_ERROR_FRAMING_MASK?

infocenter.nordicsemi.com/index.jsp

RE: DFU serial failed

Hung Bui — Mon, 18 Mar 2019 14:19:15 GMT

Hi Schef,

Do you have HWFC on UART ? At which baudrate you were running ?

Error 4 is NRF_ERROR_NO_MEM. We need to track down which function throwing that error. Could you test using the bootloader debug version and turn optimization off to see more debug information ?

RE: DFU serial failed

schef — Mon, 18 Mar 2019 13:04:23 GMT

Here is more information from gdb:

#0 app_error_handler_bare (error_code=4) at ../../main.c:73
#1 0x000775a0 in uart_event_handler (p_event=<optimized out>, p_context=<optimized out>, p_event=<optimized out>) at ../../sdk_edited/components/libraries/bootloader/serial_dfu/nrf_serial_dfu.c:403
#2 0x00076534 in uarte_irq_handler (p_uarte=0x40002000, p_cb=<optimized out>) at ../../../../sdk/nRF5_SDK_14.2.0_17b948a/components/drivers_nrf/uart/nrf_drv_uart.c:912
#3 UARTE0_UART0_IRQHandler () at ../../../../sdk/nRF5_SDK_14.2.0_17b948a/components/drivers_nrf/uart/nrf_drv_uart.c:963
#4 <signal handler called>
#5 0x00013d6e in ?? ()
#6 0x00013d6c in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)

RE: DFU serial failed

Stjepan — Fri, 15 Mar 2019 22:45:30 GMT

Maybe this can help ? devzone.nordicsemi.com/.../bootloader_secure_serial-and-nrfgo-studio-not-working