nrf52 Custom Board

RE: nrf52 Custom Board

awneil — Wed, 15 Jan 2020 22:24:40 GMT

[quote userid="83989" url="~/f/nordic-q-a/43199/nrf52-custom-board/229130"]What is the pin number in this case? [/quote]

Answered here:

devzone.nordicsemi.com/.../229305

RE: nrf52 Custom Board

mio — Wed, 15 Jan 2020 20:06:27 GMT

Thank you so much!

RE: nrf52 Custom Board

Siddharth rana — Wed, 15 Jan 2020 04:16:26 GMT

If in case LED1 is located on pin number 13 of your board.

Nrf_gpio_cfg_output (13).

RE: nrf52 Custom Board

mio — Tue, 14 Jan 2020 22:49:50 GMT

Hello. I am also wondering how to change pin number in this example. For example, how should I do if I want to use only LED1 in this example? Should I call the nrf_gpio_cfg_output(uint32_t pin_number) as well? What is the pin number in this case? I'm glad if you could tell me more detail. Thank you.

RE: nrf52 Custom Board

AndreasF — Mon, 04 Feb 2019 09:54:28 GMT

Hi.

[quote user="Kev"]LED_START and LED_STOP I commented becouse i dont need them[/quote]

Sorry about this, I did not notice that.

[quote user="Kev"]Do I need define LED_1 pin number same pin as number in nrf_gpio_cfg[/quote]

Yes, when you use the bsp library, you have to have the same pin number in your pca10040.h file as the one you configure in your main.c file.

Best regards,

Andreas

RE: nrf52 Custom Board

Kev — Fri, 01 Feb 2019 15:03:59 GMT

Im using RGB LED, that's why i set to H0H1. LED_START and LED_STOP I commented becouse i dont need them, Do I need define LED_1 pin number same pin as number in nrf_gpio_cfg ? Those 2 codes i tried one with bsp_board_init(BSP_INIT_LEDS) - code example when LED_1 is set to pin22 and other i tried with only nrf_gpio_cfg without bsp_board_init function.

RE: nrf52 Custom Board

AndreasF — Fri, 01 Feb 2019 13:38:13 GMT

Hi.

The first code snippet:

I don't think that you have the right configuration, try this one:

__STATIC_INLINE void nrf_gpio_cfg_output(uint32_t pin_number)
{
    nrf_gpio_cfg(
        pin_number,
        NRF_GPIO_PIN_DIR_OUTPUT,
        NRF_GPIO_PIN_INPUT_DISCONNECT,
        NRF_GPIO_PIN_NOPULL,
        NRF_GPIO_PIN_S0S1,
        NRF_GPIO_PIN_NOSENSE);
}

You can configure a LED by calling nrf_gpio_cfg_output(uint32_t pin_number).

Also, have you tried to use nrf_drv_gpiote_out_set(13) to toggle the pin?

Schematic:

The reason for the resistance before the LED is so that it does not burn/overheat. The solder-bridge I think is there so that you can solder on a PIN if you like.

The last code snippet:

Why have you commented out LED_START / LED_STOP? You also have not defined the LEDS with your pin number as far as I can tell.

Best regards,

Andreas

RE: nrf52 Custom Board

Kev — Thu, 31 Jan 2019 19:54:36 GMT

int main(void)
{
    /* Configure board. */

//    bsp_board_init(BSP_INIT_LEDS);
    nrf_gpio_cfg(
        13  ,
        NRF_GPIO_PIN_DIR_OUTPUT,
        NRF_GPIO_PIN_INPUT_DISCONNECT,
        NRF_GPIO_PIN_NOPULL,
        NRF_GPIO_PIN_H0H1,
        NRF_GPIO_PIN_NOSENSE);



    /* Toggle LEDs. */
    while (true)
    {
//        for (int i = 0; i < LEDS_NUMBER; i++)
//        {
//            bsp_board_led_invert(i);
//            nrf_delay_ms(500);
//        }
            nrf_gpio_port_out_write(13 ,true);
            nrf_delay_ms(300);
            nrf_gpio_port_out_write(13 ,false);
           
    }
}

Here is code from blinky example - testing external LEDs on nRF52 DK.

Here is elements between LEDs and buttons.

#include "nrf_gpio.h"

// LEDs definitions for PCA10040
#define LEDS_NUMBER    4

//#define LED_START      17
#define LED_1          22
#define LED_2          18
#define LED_3          19
#define LED_4          20
//#define LED_STOP       20

#define LEDS_ACTIVE_STATE 0

#define LEDS_INV_MASK  LEDS_MASK

#define LEDS_LIST { LED_1, LED_2, LED_3, LED_4 }

#define BSP_LED_0      LED_1
#define BSP_LED_1      LED_2
#define BSP_LED_2      LED_3
#define BSP_LED_3      LED_4

#define BUTTONS_NUMBER 4

pca10040.h config LED_1 to pin 22 for external LED on nRF52 DK on ble_app_blinky - nothing changed in main.c

Thanks for replay

RE: nrf52 Custom Board

AndreasF — Thu, 31 Jan 2019 10:03:02 GMT

Hi.

Which SDK are you using?

[quote user=""]I config pins in pca10040.h to my LED pins, but they dont work[/quote]

Which defines have you edited? Could you post some code?

[quote user=""]Also if i try to put external LEDs on nrf52 DK and config them as output and high drive they also dont work. What i am doing wrong[/quote]

Could you post some code?

[quote user=""] I also noticed 2 components between LED and nrf52 DK, what are this 2 components for?[/quote]

Which components are you talking about?

Best regards,

Andreas