Multiple GPIO ISR

[Shiju C G]

Hi,

I am using nRF51822 evaluation kit. I want to develop GPIO isr (GPIOTE_IRQHandler) which can handle multiple GPIO interrupts. I have tried to enable the GPIOTE_IRQHandler as shown in the attached file. How can i make it work for mutiple GPIO. In the attached code only one button is active and the ISR trigger only when the exact Button is pressed. Is the GPIOTE_IRQHandler is Port change sensing ISR? If it is a port change sensing ISR why not its triggering when another button is pressed? How can i make it work for different GPIO pins?

Thanks in advance,
Shijumain.c

[SG]

Your code is using a CONFIG channel in GPIOTE with BUTTON_0, not a PORT event. Therefore it is only triggered by BUTTON_0. One drawback might be the current consumption in this mode according to https://devzone.nordicsemi.com/question/2471/gpio-wakeup-low-power-workarounds/?answer=2483#post-id-2483 . You can use a PORT event instead and read the state of all pins with "uint32_t active_pins = NRF_GPIO->IN;"