How to use GPIO 09, GPIO 10 nrf52840 as GPIO interrupt

RE: How to use GPIO 09, GPIO 10 nrf52840 as GPIO interrupt

Kenneth — Mon, 16 Aug 2021 11:43:53 GMT

Can you read back the content of uicr by calling:

Upload the uicrdump.hex file here.

You can install nrfjprog by downloading nRF Command Line Tools.

Kenneth

RE: How to use GPIO 09, GPIO 10 nrf52840 as GPIO interrupt

John Nguyen — Mon, 02 Aug 2021 16:39:02 GMT

My issue is when I pressed the button, the GPIO interrupt does not happen.

I am sure that my hardware is worked. Because when I change to another pin, GPIO interrupts worked fine.

Thanks,

John

RE: How to use GPIO 09, GPIO 10 nrf52840 as GPIO interrupt

John Nguyen — Mon, 02 Aug 2021 16:38:29 GMT

Hi, could you help me this issue?

RE: How to use GPIO 09, GPIO 10 nrf52840 as GPIO interrupt

John Nguyen — Sat, 31 Jul 2021 02:30:51 GMT

Hi,

My issue is when I pressed the button, the GPIO interrupt does not happen.
I am sure that my hardware is worked. Because when I change to another pin, GPIO interrupts worked fine.

Thanks,

John

RE: How to use GPIO 09, GPIO 10 nrf52840 as GPIO interrupt

Marte Myrvold — Fri, 30 Jul 2021 09:59:12 GMT

Hi John,

I cannot see anything wrong with the way you are initializing GPIO interrupts. However, it is difficult to say what the problem is without knowing more about your project. In what way is your code not working? Do you get errors when building? If so, which errors are you getting? Or is the problem when the application is running, that it either stops working or that the GPIO interrupt does not happen?

Best regards,

Marte

RE: How to use GPIO 09, GPIO 10 nrf52840 as GPIO interrupt

John Nguyen — Fri, 30 Jul 2021 03:04:51 GMT

Hi,

Thanks for your support.

I already defined in Preprocessor Definitions.

Could you check the code that I posted above? Hope that You can find out issue.

Thanks

RE: How to use GPIO 09, GPIO 10 nrf52840 as GPIO interrupt

John Nguyen — Fri, 30 Jul 2021 02:57:32 GMT

Hi,

my application is config GPIO 10 as GPIO interrupt. I already defined CONFIG_NFCT_PINS_AS_GPIOS in Preprocessor Definitions as you refer.
This is my code. Could you help me check it?

P/S; macro FLOW_SS_PIN_INPUT is defined as GPIO 10

static void in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{ 
    test_adc = true;
    flow_cnt ++;
    FLOW_DBG(TAG, "cnt = %d\r\n", flow_cnt);
}

void flow_sensor_init(void)
{
  ret_code_t err_code;
  
    if ((NRF_UICR->NFCPINS & UICR_NFCPINS_PROTECT_Msk)== (UICR_NFCPINS_PROTECT_NFC << UICR_NFCPINS_PROTECT_Pos))
    {
        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos;
        while (NRF_NVMC->READY == NVMC_READY_READY_Busy);
        NRF_UICR->NFCPINS &= ~UICR_NFCPINS_PROTECT_Msk;
        while (NRF_NVMC->READY == NVMC_READY_READY_Busy);
        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos;
        while (NRF_NVMC->READY == NVMC_READY_READY_Busy);
        NVIC_SystemReset();
    }

  //init gpioe
  err_code = nrf_drv_gpiote_init();
  APP_ERROR_CHECK(err_code);

  //init input
  nrf_drv_gpiote_in_config_t in_config = GPIOTE_CONFIG_IN_SENSE_HITOLO(true);
  in_config.pull = NRF_GPIO_PIN_PULLUP;

  err_code = nrf_drv_gpiote_in_init(FLOW_SS_PIN_INPUT, &in_config, in_pin_handler);
  APP_ERROR_CHECK(err_code);

  nrf_drv_gpiote_in_event_enable(FLOW_SS_PIN_INPUT, true);

}

RE: How to use GPIO 09, GPIO 10 nrf52840 as GPIO interrupt

Marte Myrvold — Wed, 28 Jul 2021 09:49:59 GMT

Hi John,

How have you defined CONFIG_NFCT_PINS_AS_GPIOS?

You should add this to the preprocessor definitions in SEGGER Embedded Studio. You can do so by doing the following: Go to Project > Edit Options > Code > Preprocessor > Preprocessor Definitions and add CONFIG_NFCT_PINS_AS_GPIOS there.

Best regards,

Marte

RE: How to use GPIO 09, GPIO 10 nrf52840 as GPIO interrupt

John Nguyen — Tue, 27 Jul 2021 15:24:48 GMT

I mean when I defined CONFIG_NFCT_PINS_AS_GPIOS, my code still doesn't work.

Can I put this code in main.c, before init gpio, right?

Thanks,

John N

RE: How to use GPIO 09, GPIO 10 nrf52840 as GPIO interrupt

Andre — Tue, 27 Jul 2021 11:27:13 GMT

Why can't you define CONFIG_NFCT_PINS_AS_GPIOS?

Nevertheless, if for some reason you cannot define CONFIG_NFCT_PINS_AS_GPIOS you can run the code it would trigger by yourself

	// Making sure the NFC pins are set as GPIO
	if ((NRF_UICR->NFCPINS & UICR_NFCPINS_PROTECT_Msk)
			== (UICR_NFCPINS_PROTECT_NFC << UICR_NFCPINS_PROTECT_Pos)) {
		NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos;
		while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {
		}
		NRF_UICR->NFCPINS &= ~UICR_NFCPINS_PROTECT_Msk;
		while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {
		}
		NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos;
		while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {
		}
		NVIC_SystemReset();
	}