Hex file compiled by GCC not working

[PabloGC]

I have a custom board with the nRF51822 QFAA. Schematic:

In order to compile the firmware, I'm using MinGW. As you can see, I'm also using the SDK 12.3.0.

Finally, in order to upload the .hex generated by the Makefile in /_build, I'm using SEGGER J-Flash Lite:

Until here, everything works fine (Perfect compilation + programming). But the program is not working at all. I chose the ble_app_hrs example.

In order to debug, as I have 2 LEDs, I tried to do a simple blinking at the beginning of the main:

int main(void){
uint32_t err_code;
bool     erase_bonds;
nrf_gpio_cfg_output(28);
nrf_gpio_cfg_output(30);
nrf_gpio_pin_clear(30);
nrf_gpio_pin_clear(28);
	for(;;){
		nrf_gpio_pin_clear(30);
		nrf_gpio_pin_clear(28);
		nrf_delay_ms(500);
		nrf_gpio_pin_set(30);
		nrf_gpio_pin_set(28);
		nrf_delay_ms(500);
	}

But still, It's not working. I've already spent a long time with this and I'm running out of ideas. Could somebody possibly propose me a solution for this?

[Vidar Berg]

Hi, the SDK examples are configured for the xxAC variant that has 32K of RAM. You can change the RAM allocation in ble_app_hrs_gcc_nrf51.ld to ensure that RAM usage doesn't exceed the 16K boundary:

RAM (rwx) :  ORIGIN = 0x20001fe8, LENGTH = 0x2018

[PabloGC]

Still not working, but thank you, I completely forgot about this issue