MM32F0/L0/W0???MCU?EXTI
???MM32????????ж?????????????MM32F0/L0/W0???MCU?????
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?ж???????Σ????? NMI??
16 ???????????????????? 4 λ?ж????????
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????????ж????????NVIC????????????????????????????????????ж???????Ч????????????ж??????????ж??????????????????????ж?????????????? NVIC ?????????ο? CPU ???????
??????SysTick??У???????
?????У?????? 9000?????????????趨? 9MHz??HCLK/8 ??????????????1mS ???????
?ж????????
?±??г??? MM32L0 ??в????????????
MM32L0xx ??в??????????
???????ж?/???????????EXTI??
???ж????????????EXTI??????????????????/?ж???????????????????? CPU/?ж?????????????????????????
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??????ж???????????úò?????ж?????????????????????? 2 ??????????????????ж????μ?????????λд1?????ж?????????ж???????????????????????????????ж????????????λ????????1???????????????λд1??????????ж?????
????????????????????????úò??????????????????????????????? 2 ???????????????????????μ?????????λд1??????????????????????????????????????????????????????壬????????λ??????1??
??????????ж?/????????д1???????????????????ж?/???????
???ж?/?????·???
??? I/O ????????????????? 16 ?????ж?/????????
???ж???? I/O ???
?????????????ж?/????????????????????
EXTI ?? 16 ????? PVD ???
EXTI ?? 18 ????? USB ?????
EXTI ?? 19 ?????????? 1 ???
EXTI ?? 20 ?????????? 2 ???
?????????ж?????????
?????????
??MM32L073PF???????PA0??????????????????????????????????ж?????ж??????????н???LED??????
?????????
?????????main??????????????????????
???LED_Init()???ú?LED??????I/O,??????LED???????????ж?????á?
????????? EXTI ?? I/O ????? I/O ??????????
???? EXTI ?ж??? I/O??
EXTI ?ж???????????á?
???? EXTIx ????ж????????
?????????ж???????????
???ж??????????????LED??????
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????ó??????°????LED??????????°????LED???????????
????????????鶯?MCU???????????鶯??????????-???????
????ls ?????????2022-06-10
