Hello all,
I use nRF52840 for my custom board. I set P1.11 & P1.12 as UART_RX & UART_TX. But these two pins can not work.
Here is my nrf52840dk_nrf52840.overlay.
&pinctrl {
uart0_default: uart0_default {
group1 {
psels = <NRF_PSEL(UART_TX, 1, 12)>;
};
group2 {
psels = <NRF_PSEL(UART_RX, 1, 11)>;
};
};
uart0_sleep: uart0_sleep {
group1 {
psels = <NRF_PSEL(UART_TX, 1, 12)>;
};
group2 {
psels = <NRF_PSEL(UART_RX, 1, 11)>;
};
};
};
Here is my main.c.
/*
* Copyright (c) 2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdio.h>
#include <zephyr/kernel.h>
#include <zephyr/drivers/gpio.h>
/* 1000 msec = 1 sec */
#define SLEEP_TIME_MS 1000
/* The devicetree node identifier for the "led0" alias. */
#define LED0_NODE DT_ALIAS(led0)
#define LED1_NODE DT_ALIAS(led1)
/*
* A build error on this line means your board is unsupported.
* See the sample documentation for information on how to fix this.
*/
static const struct gpio_dt_spec led0 = GPIO_DT_SPEC_GET(LED0_NODE, gpios);
static const struct gpio_dt_spec led1 = GPIO_DT_SPEC_GET(LED1_NODE, gpios);
void main(void)
{
int ret;
if (!device_is_ready(led0.port)) {
return;
}
if (!device_is_ready(led1.port)) {
return;
}
ret = gpio_pin_configure_dt(&led0, GPIO_OUTPUT_ACTIVE);
if (ret < 0) {
return;
}
ret = gpio_pin_configure_dt(&led1, GPIO_OUTPUT_ACTIVE);
if (ret < 0) {
return;
}
while (1) {
ret = gpio_pin_toggle_dt(&led0);
printf("blinky\n");
ret = gpio_pin_toggle_dt(&led1);
if (ret < 0) {
return;
}
k_msleep(SLEEP_TIME_MS);
}
}
My project build configuration is nrf52840dk_nrf52840.
Are these two pins used for other peripherals?
Thanks!
