?鶯?-?綯???????????????????PWM???????
???綯???????????????????PWM?????????????????????????????MM32L0???MCU???????PWM????????MM32???????????TIM1?л???????????????????????????? TIM1 ?????? 3 ?? 6 ·????? PWM ?????MM32???????????TIM1????????PWM?????????????????????????????????????????????
???? PWM ???????????????????????????????? OCxM??CCxE ?? CCxNEλ?????λ??Ч????Щ????λ????????????????????????????ú?????????????????????????????????????á?COM ????????????????? TRGI????????? ??????????????TIM1_EGR ??????? COM λ????????
?? COM ????????????????????λ??TIM1_SR ??????е? COMIF λ??????????????????TIM1_DIER ??????? COMIE λ???????????ж????????????? TIMx_DIER???????COMDEλ??????????DMA????
???????????? COM ??????????????????OCx??OCxN ?????
????????????????????????PWM???????????????Ч??????????????????????и???PWM???????????????ж??????????????????ó????п?????????????÷???????TIM1_BRK_UP_TRG_COM_IRQHandler?????С?
?????????
1> ?????????TIM1?????
2> ????? TIM1?????? TIM1 ?? ARR ?? PSC???????????
3> ????BDTR??????????????????????Ч
4> ???? TIM1_CH1/CH1N??TIM1_CH2/CH2N??TIM1_CH3/CH3N?? PWM ????PWM ??2????? TIM1 ?? CHx ???
5> ???TIM1_CR1??????????????????λ
6> ???????TIM1
main?????????????
1> systick????????????
2> GPIO???????PA8/PB13??PA9/PB14??PA10/PB15??????TIM1?????黥??????????CH1/CH1N??CH2/CH2N??CH3/CH3N????????????????????????50MHz, ?????????????????????????????????????????TIM1_BKIN?????????PB12??TIM1_BKIN??????????????????PB12???????????????????Ч????????????????????????????????????????????
3> ?????TIM1??????????????
4> PWM???????????????????????д??????????TIM1_CCMR1\TIM1_CCMR2\TIM1_CCER????????????в??????????????????
???????
????????????????ο????????6??????У??????????????PWM????????????5???????????????????????ù????
?????????????????????????????????????ο?UM_MM32L0xx??????13.4.7????13.4.8????13.4.9??????????????
??????????λ3????????1???????λ??TIMx_CCR1?????????????????????????????????????λ?????1??λ6:4??PWM????????????????CCMR1????????1????0x48?????????Ч?????0x58?????????Ч?????0x68???PWM??1??
???????????????????????????????GPIO???????????????34????????е?????????????????????
??????????????????PWM????????????????TIM1_CCMR1 \ TIM1_CCMR2 \ TIM1_CCER ????????????в???????????????????????????????????????????????????????????????????????????????GPIO?????仯???????????????????н??????д?????????????У????????????MM32L0??? MCU?й??????GPIO????????
????ls ?????????2022-06-08
