I have two BC805M EK.
Board 1: when I upload the (LED controlled by reset button) code to it, it works fine.
Board 2: when I upload the LED control code to it, I could see the code has been uploaded correctly by observing the LED (flash twice). However, whenever I press the reset button, the board restarts the code from beginning again (i.e. LED flashes twice again).
The code is given below:
int main(void)
{
// Read <nrf_gpio.h> for more details of the following macros
nrf_gpio_cfg_output(RED_LED_PIN); // Configure the pin as the output
nrf_gpio_cfg_input(BUTTON_PIN,GPIO_PIN_CNF_PULL_Disabled); // Configure the pin as the input
// Toohle Red LED on and off
nrf_gpio_pin_clear(RED_LED_PIN); // Set the pin to LOW
nrf_delay_ms(100);
nrf_gpio_pin_set(RED_LED_PIN); // Set the pin to HIGH
nrf_delay_ms(100);
nrf_gpio_pin_clear(RED_LED_PIN);
nrf_delay_ms(100);
nrf_gpio_pin_set(RED_LED_PIN);
nrf_delay_ms(100);
nrf_gpio_pin_clear(RED_LED_PIN);
for(;;){
// Read the BC805M EK schematic sheet to understand the logic
RESET_BUTTON_STATE = nrf_gpio_pin_read(BUTTON_PIN);
if (RESET_BUTTON_STATE==0)
{
nrf_gpio_pin_clear(RED_LED_PIN); // If the Button pin voltage is LOW (pressed), set LED pin to LOW, hence, turn LED on
}else{
nrf_gpio_pin_set(RED_LED_PIN); // If the Button pin voltage is HIGH (not pressed), set LED pin to LOW, hence, turn LED off
}
}
}
2 boards have the same code, same hardware.
I don't know what I did to board 1 before. I guess it's caused by not easing the preload code on board #2? So I used nRF Connect on Windows PC ---> Programmer ---> Erase all, then re-upload the code, but it doesn't help.
Do you have any other clue to this situation, please? Thanks!
