Hello,
I am new to nRF development. I am going through the nRF Connect SDK Fundamentals course.
I wanted to configure a GPIO on the nRF52833 DK board as an output and toggle it. In the code below I am trying GPIO P1.01.
I have the following:
#define BLE_NOTIFY_PIN DT_NODELABEL(gpio1) /* Use GPIO1 */
#define BLE_NOTIFY_PIN_NUM 1 /* Use pin P1.01 */
static const struct device *gpio_dev;
int main(void)
{
int ret;
gpio_dev = DEVICE_DT_GET(BLE_NOTIFY_PIN);
if (!device_is_ready(gpio_dev)) {
printk("Error: GPIO device not ready\n");
return -1;
}
ret = gpio_pin_configure(gpio_dev, BLE_NOTIFY_PIN_NUM, GPIO_OUTPUT);
printk("gpio_pin_configure returned %d\n", ret);
while (1) {
gpio_pin_toggle(gpio_dev, BLE_NOTIFY_PIN_NUM);
k_sleep(K_MSEC(500));
}
}
When looking on a scope I see the toggling. I was expecting a square wave but what I am seeing is decaying signals.
I have tried a number of other GPIO pins with the same result.
Any insight on to what I am not understanding would be great.
Thanks,
Brent
