Buttonless BLE DFU with non-ble apps.

RE: Buttonless BLE DFU with non-ble apps.

SL06 — Wed, 05 Feb 2020 17:11:28 GMT

Thanks,

I could not get the line working, NRF_POWER->GPREGRET = BOOTLOADER_DFU_START;

there probably a header missing, but the following 2 line works just fine after adding nrf_power.h to my program. Thanks

nrf_power_gpregret_set(0xB1);

NVIC_SystemReset();

RE: Buttonless BLE DFU with non-ble apps.

Vidar Berg — Wed, 05 Feb 2020 08:45:06 GMT

NRF_BL_DFU_ENTER_METHOD_GPREGRET is the simplest method for buttonless DFU. 'NRF_BL_DFU_ENTER_METHOD_BUTTONLESS' is supported, but not used by any of our examples anymore because it requires you to write to the bootloader settings page in flash.

RE: Buttonless BLE DFU with non-ble apps.

SL06 — Wed, 05 Feb 2020 00:00:51 GMT

I will work on this tomorrow.

Is this the simplest method ? what about the NRF_BL_DFU_ENTER_METHOD_BUTTONLESS option ?

I could not found any info on that one.

RE: Buttonless BLE DFU with non-ble apps.

Vidar Berg — Mon, 03 Feb 2020 13:47:58 GMT

Hi,

You don't have to port everything from the BLE buttonless example to make this work. All that it's required is really to update the GREPREGRET register with the 'BOOTLOADER_DFU_START' value, then do a reboot by calling NVIC_SystemReset()

Something like this:

//Call this when receiving dfu stat command from ESB,etc.

enter_dfu_mode()

{

NRF_POWER->GREPREGRET = BOOTLOADER_DFU_START

NVIC_SystemReset();

}