【MPC5744P】S32DS配置flexPWM

DEVKIT-mpc5744p配置flexPWM

软件：S32 Design Studio for Power Architecture Version 2.1
新建工程,配置与生成代码
本文工程下载

1. 双击添加flexpwm模块
   
2. 选取pwm的输出io口
   
3. 双击Components/clockMan1,配置时钟
   
4. 在Clock Values Summary下滑可以看到FlexPWM1的时钟频率
   
5. FlexPWM对应时钟是MOTC时钟, 在settings处可配置MOTC的时钟源和分频, setting旁边的选项卡也可以单独配置时钟源的倍频和分频, 这里选择了IRCOSC/16, 再到Clock Values Summary可看到FlexPWM模块的频率变成了1MHz
   
6. 双击Components/flexpwm模块, all-选择DeviceFlexPWM_1
   
7. 输入周期1000, 则最后pwm频率为 1MHz/1000=1kHz
   
8. 使能输出口
   
9. 保存,生成代码
10. 在main.c添加业务代码

    #define STEP 100
    #define MAX_VAL 1000 // 周期
    
    uint16_t dutyCycle = MAX_VAL;
    bool increaseDutyCycle = false;
    // 初始化pwm1模块0
    CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT, g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);
    CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);
    FLEXPWM_DRV_SetupPwm(INST_FLEXPWM1, 0U, &flexPWM1_flexpwm_module_setup_t0, &flexPWM1_flexpwm_module_signal_setup_t0);
    FLEXPWM_DRV_CounterStart(INST_FLEXPWM1, 0U);
    FLEXPWM_DRV_UpdatePulseWidth(INST_FLEXPWM1, 0U, 300, 0UL, FlexPwmEdgeAligned);
    FLEXPWM_DRV_LoadCommands(INST_FLEXPWM1, (1UL << 0));
    // 
    while(1)
    {
        /* Insert a small delay to make the blinking visible */
        delay(7200000);
        /* Toggle output value LED1 */
        PINS_DRV_TogglePins(PTC, (1<<12));
    
        if (increaseDutyCycle == false)
        {
            if (dutyCycle < STEP)
                increaseDutyCycle = true;
            else
                dutyCycle -= STEP;
        }
        else
        {
            if (dutyCycle > MAX_VAL - STEP)
                increaseDutyCycle = false;
            else
                dutyCycle += STEP;
        }
        FLEXPWM_DRV_UpdatePulseWidth(INST_FLEXPWM1, 0U, dutyCycle, 0UL, FlexPwmEdgeAligned);
        FLEXPWM_DRV_LoadCommands(INST_FLEXPWM1, (1UL << 0));
    }
    

11. 编译,调试