Custom nRF522832 secure BLE DFU bootloader from example

[Bilal Bouguerra]

Hi all,

I am currently trying to develop my own Secure BLE DFU bootloader from the example provided in the SDK 12.3.0. I don't work on the DK, I have my own board with a nRF522832.

The example works fine but when I try to remove one of these lines in the main, the application transferred via DFU is no longer runned by the bootloader. I don't understand because these lines don't seem to be in relation with BLE or DFU functions:

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/**@brief Function for initialization of LEDs.

*/

static void leds_init(void)

{

bsp_board_leds_init();

bsp_board_led_on(BSP_BOARD_LED_2);

}

/**@brief Function for initializing the button module.

*/

static void buttons_init(void)

{

nrf_gpio_cfg_sense_input(BOOTLOADER_BUTTON, BUTTON_PULL, NRF_GPIO_PIN_SENSE_LOW);

//nrf_gpio_cfg_sense_input(30, BUTTON_PULL, NRF_GPIO_PIN_SENSE_LOW);

}

[...]

leds_init();

buttons_init();

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

/**@brief Function for initialization of LEDs.
 */
static void leds_init(void)
{
    bsp_board_leds_init();
    bsp_board_led_on(BSP_BOARD_LED_2);
}


/**@brief Function for initializing the button module.
 */
static void buttons_init(void)
{
  nrf_gpio_cfg_sense_input(BOOTLOADER_BUTTON, BUTTON_PULL, NRF_GPIO_PIN_SENSE_LOW);
	//nrf_gpio_cfg_sense_input(30, BUTTON_PULL, NRF_GPIO_PIN_SENSE_LOW);
}

[...]

leds_init();
buttons_init();

I don't need these lines as I have my own pin config, can I get rid of them ?

I have the same problem if I keep these lines but just change the pin number from BOOTLOADER_BUTTON to 30 (which is a button in my pin config).

Thanks