I'm working with the latest v1.6.1 nrf SDK, and was able to get the Blinky sample code to work.. But trying to translate that to toggling other GPIO isn't working. I also tried the code here: https://devzone.nordicsemi.com/f/nordic-q-a/67810/reading-and-writing-to-gpio-pins-from-a-sample-zephyr-project but when that code is loaded, nothing happens.
main.c
/*
* Copyright (c) 2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr.h>
#include <device.h>
#include <devicetree.h>
#include <drivers/gpio.h>
/* 1000 msec = 1 sec */
#define SLEEP_TIME_MS 1000
/* The devicetree node identifier for the "led0" alias. */
#define LED1_NODE DT_ALIAS(led1)
#if DT_NODE_HAS_STATUS(LED1_NODE, okay)
#define LED1 DT_GPIO_LABEL(LED1_NODE, gpios)
#define PIN DT_GPIO_PIN(LED1_NODE, gpios)
#define FLAGS DT_GPIO_FLAGS(LED1_NODE, gpios)
#else
/* A build error here means your board isn't set up to blink an LED. */
#error "Unsupported board: led0 devicetree alias is not defined"
#define LED0 ""
#define PIN 0
#define FLAGS 0
#endif
void main(void)
{
const struct device *dev;
const struct device *dev0;
bool led_is_on = true;
int ret;
dev0= device_get_binding("GPIO_0");
gpio_pin_configure(dev0,27,GPIO_OUTPUT);
dev = device_get_binding(LED1);
if (dev == NULL) {
return;
}
ret = gpio_pin_configure(dev, PIN, GPIO_OUTPUT_ACTIVE | FLAGS);
if (ret < 0) {
return;
}
while (1) {
gpio_pin_toggle(dev0,27);
gpio_pin_set(dev, PIN, (int)led_is_on);
led_is_on = !led_is_on;
k_msleep(SLEEP_TIME_MS);
}
}
In the above code, the LED blinks properly, but P0.27 remains pulled high by the pullup resistors on my board. I've tried other GPIO as well with the same results.
