How to define PIN in nrf52?

RE: How to define PIN in nrf52?

Charlie — Tue, 02 Feb 2021 08:16:42 GMT

Here is the devzone.nordicsemi.com/.../8508.blinky.zip I have verified, you expect to see LED1 blink and P1.08 level toggle every 500ms. If it does not work, can you send a picture to show me your hardware connection?

RE: How to define PIN in nrf52?

shadab — Sat, 30 Jan 2021 21:04:30 GMT

I used sdk17 and try the same way to config port 1 pin as output to blink external LEd but it wont work and for port 0 pin its working, I

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/** @file
 *
 * @defgroup blinky_example_main main.c
 * @{
 * @ingroup blinky_example
 * @brief Blinky Example Application main file.
 *
 * This file contains the source code for a sample application to blink LEDs.
 *
 */

#include <stdbool.h>
#include <stdint.h>
#include "nrf_delay.h"
//#include "boards.h"
//#include "pca10000.h"
#include "nrf_gpio.h"

#define LED_ext          NRF_GPIO_PIN_MAP(0,5)
#define led0             NRF_GPIO_PIN_MAP(0,13)
#define led1             NRF_GPIO_PIN_MAP(1,8)                 // LED0 P1.8 Not working


 
/**
 * @brief Function for application main entry.
 */
int main(void)
{
    nrf_gpio_cfg_output(led0); // config the as output pin
    nrf_gpio_cfg_output(led1); // config the as output pin
    nrf_gpio_cfg_output(LED_ext); // config the as output pin


    while(1)
    {

          nrf_gpio_pin_toggle(led0);
          nrf_delay_ms(500);
          nrf_gpio_pin_toggle(led1);
          nrf_delay_ms(500);
          nrf_gpio_pin_toggle(LED_ext);
          nrf_delay_ms(500);

    }
}
/**
 *@}
 **/

shared the code below

RE: How to define PIN in nrf52?

Charlie — Fri, 29 Jan 2021 10:08:29 GMT

I am working. ;-)

Could explain what you have done by far? Did you check the original example with a logic analyzer or oscilloscope, what does it look like?

RE: How to define PIN in nrf52?

shadab — Thu, 28 Jan 2021 19:22:11 GMT

Hi charlie !! not working

RE: How to define PIN in nrf52?

Charlie — Wed, 27 Jan 2021 12:57:10 GMT

Hi Shadab,

Not sure how you test this, anyway let's find a common ground.

In nRF5_SDK_17.0.2, there is a simple example on examples\peripheral\blinky. Make sure the original blink example works, then you can modify it like below to verify if pins at GPIO1 works or not.

    /* Configure board. */
    //bsp_board_init(BSP_INIT_LEDS);
    nrf_gpio_cfg_output(NRF_GPIO_PIN_MAP(1,10));

    /* Toggle LEDs. */
    while (true)
    {
        //for (int i = 0; i < LEDS_NUMBER; i++)
        //{
            //bsp_board_led_invert(i);
            nrf_gpio_pin_toggle(42);
            nrf_delay_us(0.5);
        //}
    }

Here both NRF_GPIO_PIN_MAP(1,10) and 42 points to oin1.10. You should see the pin toggle with the help of a logic analyzer or oscilloscope.

Best regards,

Charlie

RE: How to define PIN in nrf52?

shadab — Wed, 27 Jan 2021 07:51:54 GMT

hi charlie, I try on nrf52833 DK board but its not working

RE: How to define PIN in nrf52?

Charlie — Tue, 05 Jan 2021 13:47:12 GMT

Hi Shadab,

Just add 32 to the pin number of GPIO1.