我現(xiàn)在使用CH32V307RCT6，想實(shí)現(xiàn)TIM1和TIM2的同步計(jì)數(shù)以及pwm輸出，現(xiàn)在正在寫同步計(jì)數(shù)的部分代碼，但是一直無(wú)法實(shí)現(xiàn)功能，特此請(qǐng)教。

代碼如下

#include?"debug.h"

void?TIM1_Init(void)?{
????RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,?ENABLE);
????TIM_TimeBaseInitTypeDef?TIM_TimeBaseStructure;
????TIM_TimeBaseStructure.TIM_Period?=?999;
????TIM_TimeBaseStructure.TIM_Prescaler?=?71;
????TIM_TimeBaseStructure.TIM_ClockDivision?=?TIM_CKD_DIV1;
????TIM_TimeBaseStructure.TIM_CounterMode?=?TIM_CounterMode_Up;
????TIM_TimeBaseInit(TIM1,?&TIM_TimeBaseStructure);
????TIM_SelectOutputTrigger(TIM1,?TIM_TRGOSource_Update);
????TIM_Cmd(TIM1,?ENABLE);
}

void?TIM2_Init(void)?{
????RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,?ENABLE);
????TIM_TimeBaseInitTypeDef?TIM_TimeBaseStructure;
????TIM_TimeBaseStructure.TIM_Period?=?999;
????TIM_TimeBaseStructure.TIM_Prescaler?=?71;
????TIM_TimeBaseStructure.TIM_ClockDivision?=?TIM_CKD_DIV1;
????TIM_TimeBaseStructure.TIM_CounterMode?=?TIM_CounterMode_Up;
????TIM_TimeBaseInit(TIM2,?&TIM_TimeBaseStructure);
????TIM_SelectSlaveMode(TIM2,?TIM_SlaveMode_External1);
????TIM_SelectInputTrigger(TIM2,?TIM_TS_ITR0);
????TIM_Cmd(TIM2,?ENABLE);
}

int?main(void)?{
????NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
????SystemCoreClockUpdate();
????Delay_Init();
????USART_Printf_Init(921600);
????printf("SystemClk:%d\r\n",SystemCoreClock);
????printf(?"ChipID:%08x\r\n",?DBGMCU_GetCHIPID()?);

????TIM1_Init();
????TIM2_Init();

????while?(1)?{
????????printf("TIM1?Counter:?%d,?TIM2?Counter:?%d\n",?TIM_GetCounter(TIM1),?TIM_GetCounter(TIM2));
????????Delay_Ms(100);
????}
}

這樣打印出來(lái)的counter值看起來(lái)差距很大，應(yīng)該的沒同步上，我應(yīng)該如何修改代碼。

[2024/07/11?10:27:51.797]?→?TIM1?Counter:?681,?TIM2?Counter:?1?
TIM1?Counter:?531,?TIM2?Counter:?2?

[2024/07/11?10:27:51.906]?→?TIM1?Counter:?381,?TIM2?Counter:?2?

[2024/07/11?10:27:51.999]?→?TIM1?Counter:?231,?TIM2?Counter:?2?

[2024/07/11?10:27:52.109]?→?TIM1?Counter:?81,?TIM2?Counter:?2?

[2024/07/11?10:27:52.203]?→?TIM1?Counter:?907,?TIM2?Counter:?2?

[2024/07/11?10:27:52.312]?→?TIM1?Counter:?757,?TIM2?Counter:?2?

[2024/07/11?10:27:52.404]?→?TIM1?Counter:?607,?TIM2?Counter:?2?

[2024/07/11?10:27:52.512]?→?TIM1?Counter:?457,?TIM2?Counter:?2?

[2024/07/11?10:27:52.608]?→?TIM1?Counter:?307,?TIM2?Counter:?3?

[2024/07/11?10:27:52.700]?→?TIM1?Counter:?157,?TIM2?Counter:?3?

[2024/07/11?10:27:52.808]?→?TIM1?Counter:?7,?TIM2?Counter:?3?

[2024/07/11?10:27:52.903]?→?TIM1?Counter:?807,?TIM2?Counter:?3?

[2024/07/11?10:27:53.013]?→?TIM1?Counter:?657,?TIM2?Counter:?3?

[2024/07/11?10:27:53.104]?→?TIM1?Counter:?507,?TIM2?Counter:?3?

[2024/07/11?10:27:53.213]?→?TIM1?Counter:?357,?TIM2?Counter:?3?

[2024/07/11?10:27:53.306]?→?TIM1?Counter:?207,?TIM2?Counter:?3?

[2024/07/11?10:27:53.415]?→?TIM1?Counter:?57,?TIM2?Counter:?4?

[2024/07/11?10:27:53.509]?→?TIM1?Counter:?883,?TIM2?Counter:?4?

[2024/07/11?10:27:53.618]?→?TIM1?Counter:?733,?TIM2?Counter:?4?

[2024/07/11?10:27:53.712]?→?TIM1?Counter:?583,?TIM2?Counter:?4?

[2024/07/11?10:27:53.806]?→?TIM1?Counter:?433,?TIM2?Counter:?4?

[2024/07/11?10:27:53.916]?→?TIM1?Counter:?283,?TIM2?Counter:?4?

[2024/07/11?10:27:54.008]?→?TIM1?Counter:?133,?TIM2?Counter:?4?

[2024/07/11?10:27:54.117]?→?TIM1?Counter:?983,?TIM2?Counter:?4?

[2024/07/11?10:27:54.210]?→?TIM1?Counter:?833,?TIM2?Counter:?5?

您好，定時(shí)器有一種模式-同步模式，可以用外部觸發(fā)同步啟動(dòng)兩個(gè)定時(shí)器，如下圖，圖中不一致是因?yàn)榇蛴∠群髥栴}，實(shí)際計(jì)數(shù)器值是一樣的。附件為參考例程，可以參考一下。

CH32V307_TIM同步模式.zip

好的，感謝，我稍微改了一下代碼可以實(shí)現(xiàn)軟件使能觸發(fā)了。

void?ExtTrigger_Start_Two_TIM(?u16?arr,?u16?psc)
{
????TIM_TimeBaseInitTypeDef?TIM_TimeBaseInitStructure?=?{0};

????RCC_APB2PeriphClockCmd(?RCC_APB2Periph_GPIOA?|?RCC_APB2Periph_TIM1,?ENABLE?);
????RCC_APB1PeriphClockCmd(?RCC_APB1Periph_TIM2,?ENABLE?);

????TIM_CounterModeConfig(?TIM1,?TIM_CounterMode_Up?);

????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?=??0x00;
????TIM_TimeBaseInit(?TIM1,?&TIM_TimeBaseInitStructure);
????TIM_TimeBaseInit(?TIM2,?&TIM_TimeBaseInitStructure);

????TIM_SelectOutputTrigger(?TIM1,?TIM_TRGOSource_Enable?);

????TIM_SelectInputTrigger(?TIM2,?TIM_TS_ITR0?);
????TIM_SelectSlaveMode(?TIM2,?TIM_SlaveMode_Trigger?);

????TIM_Cmd(TIM1,?ENABLE);
}

還想請(qǐng)問下，實(shí)現(xiàn)定時(shí)器同步后，如何實(shí)現(xiàn)對(duì)tim1的ch1-4和tim2的ch1-3，同時(shí)輸出同占空比pwm波？感謝！

您好，輸出同占空比的PWM波形，按照正常的PWM輸出配置即可，注意TIM1的通道1用于觸發(fā)輸入，不能再用于PWM輸出，可用其他通道。