我用 483 EPWM0 驱动5个电机 为什么改变 4通道PWM频率，会影...

EPWM_ConfigOutputChannel(EPWM0, 4, u32NewDutyCycle, 50);
EPWM_ConfigOutputChannel(EPWM0, 5, u32NewDutyCycle, 50);


u32NewDutyCycle //这个值分别设置不同参数不行

比如设置4通道的 u32NewDutyCycle   会影响5通道    比如设置5通道的 u32NewDutyCycle   会影响4通道    分别设置一样就可以

ewfty 发表于 2023-11-3 11:36
比如设置4通道的 u32NewDutyCycle   会影响5通道    比如设置5通道的 u32NewDutyCycle   会影响4通道    分 ...

你是不是配置为互补模式了？ 那就两个是一对的工作了

        EPWM_DISABLE_COMPLEMENTARY_MODE(EPWM0);
                EPWM_DISABLE_COMPLEMENTARY_MODE(EPWM1);

关闭了,         

按道理来说，不会这样的！为何不上传一下完整的代码？

/**************************************************************************//**
* @file     main.c
* @version  V3.00
* @brief    Demonstrate how to use EPWM counter output waveform.
*
* @copyright (C) 2016 Nuvoton Technology Corp. All rights reserved.
******************************************************************************/
#include <stdio.h>
#include "NuMicro.h"

#define PLL_CLOCK       192000000


void SYS_Init(void)
{

    /* Set XT1_OUT(PF.2) and XT1_IN(PF.3) to input mode */
    PF->MODE &= ~(GPIO_MODE_MODE2_Msk | GPIO_MODE_MODE3_Msk);

    /* Enable HXT clock (external XTAL 12MHz) */
    CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);

    /* Wait for HXT clock ready */
    CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);

    /* Set core clock as PLL_CLOCK from PLL */
    CLK_SetCoreClock(PLL_CLOCK);

    /* Set PCLK0 = PCLK1 = HCLK/2 */
    CLK->PCLKDIV = (CLK_PCLKDIV_APB0DIV_DIV2 | CLK_PCLKDIV_APB1DIV_DIV2);

    /* Enable IP module clock */
    CLK_EnableModuleClock(EPWM0_MODULE);

    /* EPWM clock frequency is set double to PCLK: select EPWM module clock source as PLL */
    CLK_SetModuleClock(EPWM0_MODULE, CLK_CLKSEL2_EPWM0SEL_PLL, (uint32_t)NULL);

    /* Enable UART module clock */
    CLK_EnableModuleClock(UART0_MODULE);

    /* Select UART module clock source as HXT and UART module clock divider as 1 */
    CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART0SEL_HXT, CLK_CLKDIV0_UART0(1));

    /* Update System Core Clock */
    SystemCoreClockUpdate();

    /* Set GPB multi-function pins for UART0 RXD and TXD */
    SYS->GPB_MFPH &= ~(SYS_GPB_MFPH_PB12MFP_Msk | SYS_GPB_MFPH_PB13MFP_Msk);
    SYS->GPB_MFPH |= (SYS_GPB_MFPH_PB12MFP_UART0_RXD | SYS_GPB_MFPH_PB13MFP_UART0_TXD);

        //  /* Set PE.2 multi-function pin for EPWM0 channel 2 */
    SYS->GPE_MFPH = (SYS->GPE_MFPH & ~SYS_GPE_MFPH_PE8MFP_Msk) | SYS_GPE_MFPH_PE8MFP_EPWM0_CH0;
    SYS->GPE_MFPH = (SYS->GPE_MFPH & ~SYS_GPE_MFPH_PE9MFP_Msk) | SYS_GPE_MFPH_PE9MFP_EPWM0_CH1;
                     /* Set PE.5 multi-function pin for EPWM0 channel 2 */
    SYS->GPE_MFPL = (SYS->GPE_MFPL & ~SYS_GPE_MFPL_PE5MFP_Msk) | SYS_GPE_MFPL_PE5MFP_EPWM0_CH2;
    SYS->GPE_MFPL = (SYS->GPE_MFPL & ~SYS_GPE_MFPL_PE4MFP_Msk) | SYS_GPE_MFPL_PE4MFP_EPWM0_CH3;
    SYS->GPE_MFPL = (SYS->GPE_MFPL & ~SYS_GPE_MFPL_PE3MFP_Msk) | SYS_GPE_MFPL_PE3MFP_EPWM0_CH4;  
    SYS->GPE_MFPL = (SYS->GPE_MFPL & ~SYS_GPE_MFPL_PE2MFP_Msk) | SYS_GPE_MFPL_PE2MFP_EPWM0_CH5;

void UART0_Init()
{
    /* Configure UART0 and set UART0 baud rate */
    UART_Open(UART0, 115200);
}

int32_t main(void)
{
    /* Init System, IP clock and multi-function I/O
       In the end of SYS_Init() will issue SYS_LockReg()
       to lock protected register. If user want to write
       protected register, please issue SYS_UnlockReg()
       to unlock protected register if necessary */

    /* Unlock protected registers */
    SYS_UnlockReg();

    /* Init System, IP clock and multi-function I/O */
    SYS_Init();

    /* Lock protected registers */
    SYS_LockReg();

    /* Init UART to 115200-8n1 for print message */
    UART0_Init();


    /* EPWM0 channel 0~5 frequency and duty configuration are as follows */
    EPWM_ConfigOutputChannel(EPWM0, 0, 360000, 90);
    EPWM_ConfigOutputChannel(EPWM0, 1, 320000, 80);
    EPWM_ConfigOutputChannel(EPWM0, 2, 250000, 75);
    EPWM_ConfigOutputChannel(EPWM0, 3, 180000, 70);
    EPWM_ConfigOutputChannel(EPWM0, 4, 160000, 60);
    EPWM_ConfigOutputChannel(EPWM0, 5, 150000, 50);

    /* Enable output of EPWM0 channel 0~5 */
    EPWM_EnableOutput(EPWM0, 0x3F);

    /* Start EPWM0 counter */
    EPWM_Start(EPWM0, 0x3F);

    while(1)
     {
   
     }

}

/*** (C) COPYRIGHT 2016 Nuvoton Technology Corp. ***/

每个通道输出 的频率都不准

是我代码问题，我再查查，谢啦!!☆⌒(*＾-゜)v

频率不准，是你用逻辑分析仪测试的？