Detect External Pin Interrupts with nRF51

[rushin]

Hello, I am using external interrupt from an ADXL345 . Can you tell me how to detect that external interrupt with the nRF51 ?

[bjorn-spockeli]

Yes, add nrf_gpio_pin_set(LED_2); below nrf_gpio_cfg_output(LED_2);if you want it to be initially set to low. When you press Button 1 the led should toggle, switch off if it is on OR switch on it it is on.

[rushin]

can you explain "When you press Button 1 the led should toggle, switch off if it is on OR switch on it it is on"

[rushin]

i edited code but when i press button. LED don't ON

[bjorn-spockeli]

Replace

nrf_gpio_cfg_output(LED_2);
nrf_gpio_pin_set(LED_2);

with the following

nrf_drv_gpiote_out_config_t led_config = GPIOTE_CONFIG_OUT_TASK_LOW;

ret_code =  nrf_drv_gpiote_out_init(LED_2, &led_config);
APP_ERROR_CHECK(ret_code);

In the event handler you replace

nrf_gpio_pin_toggle(LED_2);

with

nrf_drv_gpiote_out_toggle(LED_2);

[bjorn-spockeli]

Did this resolve you issue?