how to uninstall watch dog in NCS2.0.2?

RE: how to uninstall watch dog in NCS2.0.2?

yoyou — Sat, 20 Aug 2022 03:15:58 GMT

Hi,

now i choice 3,wait for dog timeout. and

i will try set CONFIG_WDT_DISABLE_AT_BOOT=y in file prj.conf

Thanks

Best regards

RE: how to uninstall watch dog in NCS2.0.2?

Sigurd Hellesvik — Fri, 19 Aug 2022 13:50:40 GMT

Hi,

Due to constraints in our WDT Peripheral, the watchdog can not be stopped on nRF Devices. Therefore wdt_disable() will not work.

Here are alternatives you have:

Keep the watchdog on in your OTA phase, but feed it here also.
Disable the watchdog at boot by setting CONFIG_WDT_DISABLE_AT_BOOT, and then only enable if needed.
Wait for watchdog timeout.

Regards,
Sigurd Hellesvik

RE: how to uninstall watch dog in NCS2.0.2?

yoyou — Wed, 17 Aug 2022 08:58:53 GMT

Hi, Sigurd Hellesvik

thanks for reply,

this zip for nRF5340-DK, NCS2.0.2,

button1 to DFU, it will reboot twice.

devzone.nordicsemi.com/.../6735.hello_5F00_world.zip

Best regards

RE: how to uninstall watch dog in NCS2.0.2?

Sigurd Hellesvik — Tue, 16 Aug 2022 11:30:15 GMT

Hi,

I do not think I understand your issue.

Could you zip your project and send, so I can test?

Regards,
Sigurd Hellesvik

RE: how to uninstall watch dog in NCS2.0.2?

yoyou — Sat, 13 Aug 2022 03:27:47 GMT

Hi,

thanks for reply,

your zip project no problem. it running DFU mode anytime.

but my means not that, see pic

static bool will_ota=false,grunning=true;
//----------------------------------------------------------------------------------------
static const struct gpio_dt_spec button0 = GPIO_DT_SPEC_GET_OR(DT_ALIAS(sw0), gpios,{0});
static struct gpio_callback button_cb_data1;
void button_pressed0(const struct device *dev, struct gpio_callback *cb,uint32_t pins)
{
	gpio_remove_callback(button0.port, &button_cb_data1);
	printk("button_pressed0\n");
	grunning=false;
	will_ota=true;
}
void init_button_led(void)
{
	if (!device_is_ready(button0.port)) {
		printk("Error: button device %s is not ready\n",button0.port->name);
		return;
	}

	int ret = gpio_pin_configure_dt(&button0, GPIO_INPUT);
	if (ret != 0) {
		printk("Error %d: failed to configure %s pin %d\n",ret, button0.port->name, button0.pin);
		return;
	}

	ret = gpio_pin_interrupt_configure_dt(&button0,GPIO_INT_EDGE_TO_ACTIVE);
	if (ret != 0) {
		printk("Error %d: failed to configure interrupt on %s pin %d\n",
			ret, button0.port->name, button0.pin);
		return;
	}

	gpio_init_callback(&button_cb_data1, button_pressed0, BIT(button0.pin));
	gpio_add_callback(button0.port, &button_cb_data1);
}

//----------------------------------------------------------------------------------------
void ota(void)
{
	os_mgmt_register_group();
	img_mgmt_register_group();
	smp_bt_register();

	int err = bt_enable(NULL);
	if (err) {
		printk("Bluetooth init failed (err %d)\n", err);
		return;
	}
	if (IS_ENABLED(CONFIG_SETTINGS)) {
		settings_load();
	}

	err = bt_le_adv_start(BT_LE_ADV_CONN, upad, ARRAY_SIZE(upad),upsd, ARRAY_SIZE(upsd));
	if (err) {
		printk("Advertising failed to start (err %d)\n", err);
		return;
	}
	printk("   OTA Advertising started: %s\n",bt_get_name());
	
	// if wait no OTA start, timeout 3min will reboot
	for (int i=0;i<180;i++) {
		k_sleep(K_MSEC(1000));
	}
	printk("\n---------------OTA timeout---------------\n\n");
	sys_reboot(0);
}

void main(void)
{
	printk("Hello World!\n" );
	mcu_flash_init();
	if(mcu_flash_need_ota())
	{
		mcu_flash_write_ota(0);//clear ota tag
		ota();
		return;
	}else
		printk("Starting Advertising\n");

	init_button_led();
	// ...
	bt_le_per_adv_start(...);// doing another type bluetooth
	init_dog();
	while(grunning){
		// .....
		k_msleep(1000);
		feed_dog();
	}
	//--------------------------------------
	bt_le_per_adv_stop(...);
	uninit_dog();
	if(will_ota) 
		sys_reboot(0);
	else
		go_system_off();
}

dog set to 3s.

Normal situation, app not start DFU, doing another type bluetooth,

when button down will mak to flash and reboot device,

when app start, first check mak,

if got mak will start DFU and not do other anything.

becuse unintidog -1,sys_reboot(0) will case reboot twice.

why dog uninit failed?

so i only must wait long time for dog reboot.

Best regards

RE: how to uninstall watch dog in NCS2.0.2?

Sigurd Hellesvik — Fri, 12 Aug 2022 15:13:00 GMT

Hi Yo,

I took the SMP Server Sample and added a Watchdog to it.

Then I tested to do DFU over Bluetooth using the nRF Connect for Mobile app.

This seems to work fine for me.

Do you get the same issue if you try this?

devzone.nordicsemi.com/.../smp_5F00_svr_5F00_with_5F00_dog.zip

Regards,
Sigurd Hellesvik

RE: how to uninstall watch dog in NCS2.0.2?

yoyou — Fri, 12 Aug 2022 09:37:16 GMT

Serial or Bluetooth Low Energy?

Bluetooth for DFU.

Best regards

RE: how to uninstall watch dog in NCS2.0.2?

Sigurd Hellesvik — Fri, 12 Aug 2022 08:50:02 GMT

Hi Yo,

How do you do the DFU?
Serial or Bluetooth Low Energy?

Regards,
Sigurd Hellesvik

RE: how to uninstall watch dog in NCS2.0.2?

yoyou — Thu, 11 Aug 2022 00:11:36 GMT

yes,fix the problem by wait dog restart,

but take time, Not timely enough.

Best regards

RE: how to uninstall watch dog in NCS2.0.2?

Sigurd Hellesvik — Wed, 10 Aug 2022 11:01:52 GMT

Hi Yo,

[quote user="yuyou"]maybe i can't call sys_reboot(0), only wait dog restart....[/quote]

Try this.

Does it fix the problem?

Regards,
Sigurd Hellesvik

RE: how to uninstall watch dog in NCS2.0.2?

yoyou — Wed, 10 Aug 2022 08:07:53 GMT

Hi, Sigurd Hellesvik

thanks for reply, i konw your means.

go to sleep mode, dog will disable auto.

but when i will go to DFU,

dog will restart 3sec later,

however, i need restart now by call sys_reboot(0),

so it will restart twice.

maybe i can't call sys_reboot(0), only wait dog restart....

Best regards

RE: how to uninstall watch dog in NCS2.0.2?

Sigurd Hellesvik — Wed, 10 Aug 2022 07:19:12 GMT

Hi,

You can not call wdt_disable from you application.

I suggest you do something like this in your code instead:

#define WDT_TMP_DISABLE_ID 1

int wdt_tmp_disabled[1];
nvs_read(fs,WDT_TMP_DISABLE_ID,wdt_tmp_disabled,sizeof(wdt_tmp_disabled));
if(wdt_tmp_disabled){
    wdt_tmp_disabled = 0;
    nvs_write(fs,WDT_TMP_DISABLE_ID,wdt_tmp_disabled,sizeof(wdt_tmp_disabled));
}
else{
    wdt_install_timeout(...)
    wdt_setup(...)
}
// ...
// ...

//If you want to restart temporary withour watchdog:
wdt_tmp_disabled = 1
nvs_write(fs,WDT_TMP_DISABLE_ID,wdt_tmp_disabled,sizeof(wdt_tmp_disabled));
sys_reboot(0)

Did the code example help your understanding?

Regards,
Sigurd Hellesvik

RE: how to uninstall watch dog in NCS2.0.2?

yoyou — Wed, 10 Aug 2022 02:49:21 GMT

i've no idea.

Best regards

RE: how to uninstall watch dog in NCS2.0.2?

Sigurd Hellesvik — Mon, 08 Aug 2022 10:08:00 GMT

Hi,

-1 is EPERM.

From wdt_disable():
"-EPERM – If watchdog can not be disabled directly by application code. "

Maybe an easier way to achieve what you need is to save a Non-Volatile variable keeping track of the watchdog status.
Then enable the watchdog if the variables says so.

Did that make sense?

Regards,
Sigurd Hellesvik

RE: how to uninstall watch dog in NCS2.0.2?

yoyou — Mon, 08 Aug 2022 09:07:18 GMT

Hi, Sigurd Hellesvik

wdt_disable return value: -1

Best regards

RE: how to uninstall watch dog in NCS2.0.2?

Sigurd Hellesvik — Mon, 08 Aug 2022 08:49:57 GMT

Hi,

Can you check which value wdt_disable() returns?

Regards,
Sigurd Hellesvik