11. Timebase

11.1. Function description:

This demo shows how to configure the ADVANCED_TIMER peripheral in timing mode with the corresponding interrupt request for channel 0 in order to generate a time base. The TIMxCLK frequency is set to systemcoreclock 8MHz, the prescaler is 400.

For instance: ADVANCED_TIMER counter clock is 20KHz.

ADVANCED_TIMER configuration is timing mode, and the timing is 0.2s(4000/20000 = 0.2s), and the CH0 update rate = ADVANCED_TIMER counter clock/CH0CV = 20000/4000 = 5Hz.

Enable the channel 0 interrupt, so the ADVANCED_TIMER generates an interrupt each 0.2s, in the handler routine, LED1 is toggled each 0.2s.

11.2. Test result:

When the timer generates an interrupt for 0.2S, the pass state is generated,print “pass”, if not, print “fail”.

11.3. IO connection:

NONE

11.4. Output pad:

PAD
pad_ADVANCED_TIMERn_bkin
pad_ADVANCED_TIMERn_etr
pad_ADVANCED_TIMERn_ch1_i
pad_ADVANCED_TIMERn_ch2_i
pad_ADVANCED_TIMERn_ch3_i

Note

The ‘m’ and ‘n’ in “advtimer_timerm” and “advtimer_timern” indicate the peripheral number.