hi,
I have some problems about pwm register.
1.NRF_PWM0->MODE
2.NRF_PWM0->COUNTERTOP
3.NRF_PWM0->LOOP
4.NRF_PWM0->DECODER
5.NRF_PWM0->SEQ[0].PTR
6.NRF_PWM0->SEQ[0].CNT
7.NRF_PWM0->SEQ[0].REFRESH
8.NRF_PWM0->SEQ[0].ENDDELAY
9.NRF_PWM0->SEQ[1]
1.about mode there two mode :
①NRF_PWM_MODE_UP: 0->COUNTERTOP
②NRF_PWM_MODE_UP_AND_DOWN: 0->COUNTERTOP->0
2.NRF_PWM0->COUNTERTOP
I think it is the Duty cycle.is right?
3.NRF_PWM0->LOOP
I dot know when and where the pwm loop?
4.NRF_PWM0->DECODER
①NRF_PWM_LOAD_COMMON: the four channel change At the same time
②NRF_PWM_LOAD_GROUPED : 0 and 1 channel change at the some time,then 2 and 3 change at the some time
③NRF_PWM_LOAD_INDIVIDUAL: 0 -> 1 ->2->3 channel
④NRF_PWM_LOAD_WAVE_FORM: 0 -> 1 ->2->COUNTERTOP, about the top is compare value?
5.NRF_PWM0->SEQ[0].PTR
it store the compare value? if it is compare value,and which channel will be select?
6.NRF_PWM0->SEQ[0].CNT
the ptr data length?
7.NRF_PWM0->SEQ[0].REFRESH
I dont know how the value impact pwm
8.NRF_PWM0->SEQ[0].ENDDELAY
when pwm finsh,it will delay some times.how to calculate the time value
9.NRF_PWM0->SEQ[1].
the NRF_PWM0->SEQ[0] which is different with NRF_PWM0->SEQ[1]. how the value impact pwm.
about above is my problems and some confuse.
hope can provide some pic to display every register role in the pwm.
thx every body !
