[应用方案] 新塘M451 UART3与PWM1配置易冲突

void UART3_Init()



{



    /*---------------------------------------------------------------------------------------------------------*/



    /* Init UART                                                                                               */



    /*---------------------------------------------------------------------------------------------------------*/



    /* Reset UART module */



    SYS_ResetModule(UART3_RST);



 



    /* Configure UART0 and set UART0 baud rate */



    UART_Open(UART3, 115200);



 



    /* Enable UART RDA/THRE/Time-out interrupt */



    UART_EnableInt(UART3, (UART_INTEN_RDAIEN_Msk));



}

void PWM1_FunctionInit(void)



{



//        PWM1_ClockInit();



//        PWM1_IOInit();



        /*



                Configure PWM0 channel 0 init period and duty.



                Period is PLL / (prescaler * (CNR + 1))



                Duty ratio = (CMR + 1) / (CNR + 1)



                Period = 72 MHz / (2 * (199 + 1)) = 180000 Hz



                Duty ratio = (99 + 1) / (199 + 1) = 50%



        */



        // PWM0 channel 0 frequency is 180000Hz, duty 50%,



        PWM_ConfigOutputChannel(PWM1, 2, 50, 20);



        PWM_ConfigOutputChannel(PWM1, 3, 50, 20);



 



        // Enable output of PWM0 channel 0



        PWM_EnableOutput(PWM1, PWM_CH_2_MASK);



        PWM_EnableOutput(PWM1, PWM_CH_3_MASK);



 



        //Start



        PWM_Start(PWM1, PWM_CH_2_MASK);



        PWM_Start(PWM1, PWM_CH_3_MASK);



}

void PWM1_IOInit(void)



{



        //retarget, this is unsafe



        SYS->GPD_MFPH = SYS_GPD_MFPH_PD15MFP_PWM1_CH3 | SYS_GPD_MFPH_PD14MFP_PWM1_CH2;



}