RE: Watchdog reconfiguration

Simonr — Thu, 21 Nov 2019 13:51:58 GMT

What SDK version are you using? There was a bug in SDKs before SDK v.16.0.0 where reload values above 131 seconds will not work due to a calculation overflowing internally in the driver during multiplication.

The fix is to replace this line with the following three:

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

+    uint64_t ticks = (p_config->reload_value * 32768ULL) / 1000;
+    NRFX_ASSERT(ticks <= UINT32_MAX);

+    nrf_wdt_reload_value_set((uint32_t) ticks);

Best regards,

Simon

RE: Watchdog reconfiguration

Moufti — Wed, 20 Nov 2019 15:33:25 GMT

Seems the max value that can be set is around 130 seconds (the timer overflows beyond that)