菜**CH32V307调试踩不玩的坑

只看该作者 · 2023-2-3 18:16

这段时间刚好有点时间空闲来填坑，结果掉坑里起不来之CH32V307 PWMOUT
测试板用到PD3/PB8/PB9/PC6这四个IO做PWM用
结果四个IO用作GPIO均输出正常

，改成PWM没有一个有输出

如下PB8/TIM4CH3示例代码
void TIM4_PWMOut_Init(u16 arr, u16 psc, u16 ccp)
{
GPIO_InitTypeDef GPIO_InitStructure = {0};
TIM_OCInitTypeDef TIM_OCInitStructure = {0};
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure = {0};

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB , ENABLE);

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);

TIM_TimeBaseInitStructure.TIM_Period = arr;
TIM_TimeBaseInitStructure.TIM_Prescaler = psc;
TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseInitStructure);

TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = ccp;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC3Init(TIM4, &TIM_OCInitStructure);

TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Disable);
TIM_ARRPreloadConfig(TIM4, ENABLE);
}
请各位DS帮忙看下是否代码写错，还是其他什么有问题
请沁恒FAE伸手援助
在此谢过各位DS

只看该作者 · 2023-2-4 20:19

大侠帮忙解下，谢谢

只看该作者 · 2023-2-6 10:43

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
==>
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO|RCC_APB2Periph_GPIOB, ENABLE);

只看该作者 · 2023-2-6 13:19

您好，若你是想用TIM4的PWM输出，只有PB8、PB9分别对应TIM4_CH3和TIM4_CH4，PD3对应的是TIM10_CH2,PC6对应的是TIM8_CH1，若你想将这4个脚用作PWM输出，要针对这4个引脚及对应的定时器全部进行配置，具体可参考CH32V307数据手册引脚描述
CH32V307数据手册：https://www.wch.cn/downloads/CH32V307DS0_PDF.html

只看该作者 · 2023-2-6 15:30

PB8/TIM4CH3如下代码要怎样修改呢
void TIM4_PWMOut_Init(u16 arr, u16 psc, u16 ccp)
{
GPIO_InitTypeDef GPIO_InitStructure = {0};
TIM_OCInitTypeDef TIM_OCInitStructure = {0};
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure = {0};

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB , ENABLE);

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);

TIM_TimeBaseInitStructure.TIM_Period = arr;
TIM_TimeBaseInitStructure.TIM_Prescaler = psc;
TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseInitStructure);

TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = ccp;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC3Init(TIM4, &TIM_OCInitStructure);

TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Disable);
TIM_ARRPreloadConfig(TIM4, ENABLE);
}

只看该作者 · 2023-2-6 18:46

TIM_CtrlPWMOutputs(TIM4, ENABLE );
TIM_Cmd( TIM4, ENABLE );
感觉这两句要加上吧。
我是在V203的官方例子上换了个通道，正常输出PWM的，V307还没时间玩

菜**CH32V307调试踩不玩的坑

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