Синхронизация таймеров STM32(Работают не синхронно)

http://forum.easyelectronics.ru/viewtopic.php?f=35&t=12983


Имеет место какой таймер запускать первым! Сначала необходимо запустить ведомый  так как он не запустится пока не запустится ведущий.
Ведомый TIM3 запускаем  первым
Ведущий TIM1 запускаем  вторым.

void TIMERS_Start(void)
{
TIM_Cmd(TIM3, ENABLE);
TIM_Cmd(TIM1, ENABLE); // запуск таймера после инициализации АЦП и его синхронизации с TIMER3

TIM_CtrlPWMOutputs(TIM3, ENABLE);
TIM_CtrlPWMOutputs(TIM1, ENABLE);

#include "timer.h"

uint16_t TimerPeriod = 0;
uint8_t TIM1_HalfPeriodCNT = 1;

void TIMER1_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_BDTRInitTypeDef TIM_BDTRInitStructure;

TimerPeriod = (SystemCoreClock / 40000) - 1;

/* Time Base configuration */
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = TimerPeriod;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;

TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

/* Channel 1, 2, 3, 4 Configuration in PWM mode */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OCInitStructure.TIM_Pulse = TimerPeriod >> 1;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

//PWM for Cell3_PWM_EN
TIM_OC2Init(TIM1, &TIM_OCInitStructure);
//TIM_OC2FastConfig(TIM1, TIM_OCFast_Enable);

TIM_OCInitStructure.TIM_Pulse = 1;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);

TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

//PWM for Primary WIND and Cell3_PWM_OGR
TIM_OCInitStructure.TIM_Pulse = TimerPeriod >> 2;
TIM_OC3Init(TIM1, &TIM_OCInitStructure);
//TIM_OC3FastConfig(TIM1, TIM_OCFast_Enable);

TIM_ARRPreloadConfig(TIM1, ENABLE);
TIM_CCPreloadControl(TIM1, ENABLE);
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);
TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);
TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable);

/* Automatic Output enable, Break, dead time and lock configuration*/
TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_OFF;
TIM_BDTRInitStructure.TIM_DeadTime = 0;
TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;
TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_Low;
TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;

TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);

// Allow interruput from TIM_1 update event
TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE );

/* Master Mode selection */
TIM_SelectOutputTrigger(TIM1, TIM_TRGOSource_Enable);//TIM_TRGOSource_Enable);
TIM_SelectMasterSlaveMode(TIM1, TIM_MasterSlaveMode_Enable);


}
//--------------------------------------
void TIMER3_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;

TimerPeriod = (SystemCoreClock / 40000 ) - 1;

// Time Base configuration
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = TimerPeriod;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;

TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

// PWM for
TIM_OCInitStructure.TIM_Pulse = TimerPeriod >> 3;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

TIM_OC1Init(TIM3, &TIM_OCInitStructure);
TIM_OC1FastConfig(TIM3, TIM_OCFast_Enable);

// PWM for
TIM_OCInitStructure.TIM_Pulse = TimerPeriod >> 3;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

TIM_OC2Init(TIM3, &TIM_OCInitStructure);
TIM_OC2FastConfig(TIM3, TIM_OCFast_Enable);

// PWM for
TIM_OCInitStructure.TIM_Pulse = TimerPeriod >> 3;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

TIM_OC3Init(TIM3, &TIM_OCInitStructure);
TIM_OC3FastConfig(TIM3, TIM_OCFast_Enable);

// PWM for
TIM_OCInitStructure.TIM_Pulse = TimerPeriod >> 3;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

TIM_OC4Init(TIM3, &TIM_OCInitStructure);
TIM_OC4FastConfig(TIM3, TIM_OCFast_Enable);

TIM_CCPreloadControl(TIM3, ENABLE);
TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable);

TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Gated);
TIM_SelectInputTrigger(TIM3, TIM_TS_ITR0);

}
//--------------------------------------
void TIMERS_Start(void)
{
TIM_Cmd(TIM3, ENABLE);
TIM_Cmd(TIM1, ENABLE); // запуск таймера после инициализации АЦП и его синхронизации с TIMER3

TIM_CtrlPWMOutputs(TIM3, ENABLE);
TIM_CtrlPWMOutputs(TIM1, ENABLE);

}