RE: Configuration of Watchdog timer

beemavishnu — Mon, 24 Jun 2019 08:47:39 GMT

Thank you for confirmation.

How about considering '-1' also. Is it fine to ignore as it is negligible.

RE: Configuration of Watchdog timer

Einar Thorsrud — Mon, 24 Jun 2019 08:32:52 GMT

Hi,

The WDT example uses the WDT driver, and that is configured by the nrf_drv_wdt_config_t struct, which is typedefed to nrfx_wdt_config_t. It has a reload_value field, which is in milliseconds (ms). The example uses NRF_DRV_WDT_DEAFULT_CONFIG, which means that the value of WDT_CONFIG_RELOAD_VALUE in sdk_config is used, and this is set to 2000 (2s) by default.

Unfortunately, the documentation string in sdk_config.h is wrong, which can cause some confusion, but you can clearly see that the value is in ms by looking at the implementation in nrfx:

nrf_wdt_reload_value_set((p_config->reload_value * 32768) / 1000);