Other Parts Discussed in Thread: TCAN4550
We are trying to test the watchdog feature of TCAN4550. There are two watchdog interrupts mentioned in the datasheet – 820 bit 18 and 1050 bit 26.
What is the difference between these ?
We followed the below sequence.
Watchdog is disabled
Set the clock ref
Set the timer action : 00 –[ Set interrupt flag and if a pin is configure to reflect WD output as an interrupt the pin will show a low]
Set 0800 register bit 23:22 as 10 : watchdog output
Enable the watchdog.
Reset timer to trigger the watchdog.
We dont reset the watchdog again to induce timeout condition. Expectation is that interrupt flag must be set and interrupt notification must occur.
But no interrupt notification is occurring. The 1050 register bit 26 watchdog interrupt is not setting.
The 820 bit 18 WDTO bit is always set even when the watchdog is not enabled.
Is there any other configuration to be done?
