about sys_reboot(SYS_REBOOT_WARM) with PIO Keep

RE: about sys_reboot(SYS_REBOOT_WARM) with PIO Keep

Vidar Berg — Mon, 15 Jan 2024 07:11:25 GMT

Good to hear that it worked. Thank you for the update.

RE: about sys_reboot(SYS_REBOOT_WARM) with PIO Keep

ZL_Chiu — Mon, 15 Jan 2024 01:43:29 GMT

Thanks , It's Work now !

RE: about sys_reboot(SYS_REBOOT_WARM) with PIO Keep

Vidar Berg — Fri, 12 Jan 2024 07:05:59 GMT

Hi,

I replaced the broken link in my previous reply with a code snippet. Please try to implement the same in your application to configure the pin as an output and set it HIGH before main().

RE: about sys_reboot(SYS_REBOOT_WARM) with PIO Keep

ZL_Chiu — Fri, 12 Jan 2024 00:19:36 GMT

Hi.

i need set PIO default level is Hi , when system reset , the PIO will set to Hi , How to do ?

i has enable MCUBOOT , if added CONFIG_REBOOT=y in prj.conf , It's possible can keep pio level after call sys_reboot (0) ?

by the way , ca't access web address form your post

RE: about sys_reboot(SYS_REBOOT_WARM) with PIO Keep

Vidar Berg — Thu, 11 Jan 2024 16:01:18 GMT

Hi,

The GPIO configurations are reset to their default settings after a reset. In other words, retaining the pin state through a reset is not possible. However, you can re-initialize the pin during early boot to make this less noticeable. For instance, by using the SYS_INIT() macro similar to how it is used in the snippet below.

static int gpio_init(const struct device *unused)
{
	int err;
	const struct gpio_dt_spec gpio_pin = //TODO: assign pin info from devicetree;

	if (!device_is_ready(gpio_pin.port)) {
		LOG_ERR("GPIO is not ready");
		return -EIO;
	}

	err = gpio_pin_configure_dt(&gpio_pin, GPIO_OUTPUT_ACTIVE);
	if (err) {
		LOG_ERR("Error while configuring gpio_pin (err %d)", err);
		return err;
	}

	k_msleep(50);

	return 0;
}

SYS_INIT(gpio_init, POST_KERNEL, 80);

Reset behavior

Best regards,

Vidar