M051 Time Capture 捕获的值都为0

游客 121.35.101.x 发表于 2020-7-14 10:55
/* Set P3 multi-function pins for UART0 RXD and TXD   p3.2为T0*/
    SYS->P3_MFP &= ~(SYS_MFP_P30 ...

    /* Set P3 multi-function pins for UART0 RXD and TXD   p3.2为T0*/
    SYS->P3_MFP &= ~(SYS_MFP_P30_Msk | SYS_MFP_P31_Msk | SYS_MFP_P32_T0EX );
    SYS->P3_MFP |= (SYS_MFP_P30_RXD0 | SYS_MFP_P31_TXD0 | SYS_MFP_P32_T0EX );
兄弟, 你上面那个是不是写错了, 应该是下面这样子:

    /* Set P3 multi-function pins for UART0 RXD and TXD   p3.2为T0*/
    SYS->P3_MFP &= ~(SYS_MFP_P30_Msk | SYS_MFP_P31_Msk | SYS_MFP_P32_Msk );
    SYS->P3_MFP |= (SYS_MFP_P30_RXD0 | SYS_MFP_P31_TXD0 | SYS_MFP_P32_T0EX );