RE: Dual bank bootloader and Application start

Bjørn Kvaale — Mon, 12 Mar 2018 14:48:18 GMT

See this case for more info.

RE: Dual bank bootloader and Application start

Mannu — Mon, 12 Mar 2018 06:57:56 GMT

Hello leoc7 can you please tell me how to do DUAL BANK DFU in NRF51822.Please tell whole process and configuration.

Thanks.

RE: Dual bank bootloader and Application start

Bjørn Kvaale — Wed, 28 Feb 2018 14:21:57 GMT

Hi Leo,

If I were you, I would use the debug bootloader using an RTT client to see what happens when the DFU process fails. From my understanding, this function is called when the DFU process fails:

void app_error_handler_bare(uint32_t error_code)
{
(void)error_code;
NRF_LOG_ERROR("Received an error: 0x%08x!\r\n", error_code);
NVIC_SystemReset();
}

NVIC_SystemReset() then resets the device & the main function in the bootloader is called again. Since DFU functionality is defined, it will wait inside the bootloader like you mention. The DFU bootloader should have a timeout which will reset the chip & boot up the normal application. It seems you can send a Reset System command to trigger a reset which should start the application again. (see link for more info).