RE: Toggling P0.12 also toggles P0.11 on nRF52832 dev kit

Vidar Berg — Mon, 02 Jan 2023 08:21:32 GMT

As far as I can recall, this is the first time I am hearing of a short circuit problem on a development kit, so I am afraid I do not have a good suggestion as to what may have caused it. It could be something like a bad solder joint or damaged PCB trace.

I suggest you ask for a replacement board if you bought it through one of our distributors.

RE: Toggling P0.12 also toggles P0.11 on nRF52832 dev kit

AuFries — Fri, 30 Dec 2022 19:57:21 GMT

I just checked with a multimeter and it is a short. How can that occur?

RE: Toggling P0.12 also toggles P0.11 on nRF52832 dev kit

Vidar Berg — Fri, 30 Dec 2022 11:33:43 GMT

Hello,

It sounds like there may be a short between the pins, or have you already measured for continuity between them? If it is not a short, please try to program the hex file included below and see if you still get the same result.

devzone.nordicsemi.com/.../0523.gpio_5F00_11_5F00_12_5F00_toggle_5F00_test.hex

You can program this hex file from the command line with nrfjprog or with the Programmer app in nRF connect for desktop.

With nrfjprog:

$ nrfjprog --program gpio_11_12_toggle_test.hex --chiperase --reset

Expected result with my hex file:

My test code (Note: fetching of the gpio binding is slightly different here as I used SDK v2.2.0)

/*
 * Copyright (c) 2012-2014 Wind River Systems, Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/kernel.h>

const struct device *mux_dev = DEVICE_DT_GET(DT_NODELABEL(gpio0));

void main(void)
{
	int err;

	printk("Hello World! %s\n", CONFIG_BOARD);

	err = gpio_pin_configure(mux_dev, 11, GPIO_OUTPUT | GPIO_ACTIVE_HIGH | GPIO_OUTPUT_INIT_HIGH);
	if (err) {
		printk("gpio_pin_configure() failed. (%d)\n", err);
	}

	err = gpio_pin_configure(mux_dev, 12, GPIO_OUTPUT | GPIO_ACTIVE_HIGH | GPIO_OUTPUT_INIT_LOW);
	if (err) {
		printk("gpio_pin_configure() failed. (%d)\n", err);
	}

	for (;;) {
		err = gpio_pin_toggle(mux_dev,11);
		if (err) {
			printk("gpio_pin_toggle() failed. (%d)\n", err);
		}

		err = gpio_pin_toggle(mux_dev,12);
		if (err) {
			printk("gpio_pin_toggle() failed. (%d)\n", err);
		}

		k_sleep(K_MSEC(1000));
	}
}

Best regards,

Vidar