GPIO interrupt has no response

RE: GPIO interrupt has no response

yqin15 — Tue, 03 Sep 2019 02:18:50 GMT

sorry, it's my fault, it is because the p18 always hold low so prevent the sense input of p29, the external trigger of p18 is not worked as desired low pulse but high pulse so always hold to low.

RE: GPIO interrupt has no response

yqin15 — Tue, 03 Sep 2019 01:19:42 GMT

I did't use gpiote driver, I just set pin for sense input and enable gpiote irq， then check pin status at interrupt.

1. config sense input

nrf_gpio_cfg_sense_input(29_PIN,NRF_GPIO_PIN_PULLUP,NRF_GPIO_PIN_SENSE_LOW);
nrf_gpio_cfg_sense_input(18,NRF_GPIO_PIN_PULLUP,NRF_GPIO_PIN_SENSE_LOW);

NRF_GPIOTE->INTENCLR = 0xFFFFFFFF;
NVIC_ClearPendingIRQ(GPIOTE_IRQn);
NVIC_SetPriority(GPIOTE_IRQn, APP_IRQ_PRIORITY_LOW);
NRF_GPIOTE->INTENSET = GPIOTE_INTENSET_PORT_Msk;
NVIC_EnableIRQ(GPIOTE_IRQn);
NRF_GPIOTE->EVENTS_PORT = 0;

2. check key status at interrupt

void GPIOTE_IRQHandler(void)
{
uint32_t port_data = NRF_GPIO->IN;
if ( NRF_GPIOTE->EVENTS_PORT ) {

NRF_GPIOTE->EVENTS_PORT = 0;

if(((~port_data) & (1<<18))== (1<<18))
{
//handle of p18 irq
}

if(((~port_data) & (1<<29))== (1<<29))
{
//handle of p29 irq
}

NRF_GPIOTE->EVENTS_PORT = 0;

}
}

RE: GPIO interrupt has no response

Kenneth — Mon, 02 Sep 2019 13:34:59 GMT

What have you configured GPIOTE_CONFIG_NUM_OF_LOW_POWER_EVENTS to?

I assume you are using gpiote driver for all configuration of sense input?

Best regards,
Kenneth

RE: GPIO interrupt has no response

yqin15 — Mon, 02 Sep 2019 09:57:25 GMT

btw, interrupt of p18 and p07 works well and the io level of p29 is right.