为什么M0518的PF5配成PWM输出一直输出0V

只看该作者 · 2024-5-14 15:44

/* Enable PWM1 clock source */
CLK_EnableModuleClock(PWM1_MODULE);

            /* Select PWM module clock source */
//CLK_SetModuleClock(PWM0_MODULE, CLK_CLKSEL3_PWM0_S_HClK, 0);
CLK_SetModuleClock(PWM1_MODULE, CLK_CLKSEL3_PWM1_S_PCLK, 0);

/* Reset PWM0 */
SYS_ResetModule(PWM1_RST);
                  /* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate PllClock, SystemCoreClock and CycylesPerUs automatically. */
//SystemCoreClockUpdate();
PllClock       = PLL_CLOCK;          // PLL
SystemCoreClock = PLL_CLOCK / 1;       // HCLK
CyclesPerUs    = PLL_CLOCK / 1000000;  // For SYS_SysTickDelay()


      /* Set GPA multi-function pins for PWM1 Channel 2 */
SYS->GPA_MFP &= ~(SYS_GPA_MFP_PA10_Msk);
SYS->GPA_MFP |= (SYS_GPA_MFP_PA10_PWM1_CH2);


      /* Set GPA multi-function pins for PWM1 Channel 5 */
SYS->GPF_MFP &= ~(SYS_GPF_MFP_PF5_Msk);
SYS->GPF_MFP |= (SYS_GPF_MFP_PF5_PWM1_CH5);

SYS->ALT_MFP3 |= SYS_ALT_MFP3_PA10_PWM1_CH2;
SYS->ALT_MFP3 |= SYS_ALT_MFP3_PF5_PWM1_CH5;