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TIM_ParallelSynchro on stm32f103xx not work

Ariel Rivera
Associate II
Posted on March 25, 2018 at 18:02

I have implemented on stm32f103xx the example TIM_ParallelSynchro, this not work. For stm32f407xx fine work.

int main(void)

{

HAL_Init();

SystemClock_Config();

InitConfigTIM3_Master();

InitConfigTIM2_Slave();

while (1)

{

}

}

static void InitConfigTIM2_Slave(void)

{

TIM_OC_InitTypeDef sOCConfig;

TIM_SlaveConfigTypeDef sSlaveConfig;

hTIM2.Instance = TIM2;

hTIM2.Init.Period = 9;

hTIM2.Init.Prescaler = 0;

hTIM2.Init.ClockDivision = 0;

hTIM2.Init.CounterMode = TIM_COUNTERMODE_UP;

hTIM2.Init.RepetitionCounter = 0;

HAL_TIM_Base_Init(&hTIM2);

HAL_TIM_PWM_Init(&hTIM2);

sOCConfig.OCMode = TIM_OCMODE_PWM1;

sOCConfig.OCPolarity = TIM_OCPOLARITY_HIGH;

sOCConfig.Pulse = 3;

HAL_TIM_PWM_ConfigChannel(&hTIM2, &sOCConfig, TIM_CHANNEL_3);

sSlaveConfig.SlaveMode = TIM_SLAVEMODE_GATED;

sSlaveConfig.InputTrigger = TIM_TS_ITR2; // for TIM3 master

HAL_TIM_SlaveConfigSynchronization(&hTIM2, &sSlaveConfig);

HAL_TIM_MspPost_Init(&hTIM2);

HAL_TIM_PWM_Start_IT(&hTIM2, TIM_CHANNEL_3);

}

static void InitConfigTIM3_Master(void)

{

TIM_MasterConfigTypeDef sMasterConfig;

TIM_OC_InitTypeDef sOCConfig;

hTIM3.Instance = TIM3;

hTIM3.Init.Period = 3600-1;

hTIM3.Init.Prescaler = 0;

hTIM3.Init.ClockDivision = 0;

hTIM3.Init.CounterMode = TIM_COUNTERMODE_UP;

hTIM3.Init.RepetitionCounter = 0;

HAL_TIM_Base_Init(&hTIM3);

HAL_TIM_PWM_Init(&hTIM3) ;

sOCConfig.OCMode = TIM_OCMODE_PWM1;

sOCConfig.OCPolarity = TIM_OCPOLARITY_HIGH;

sOCConfig.Pulse = 1800;

HAL_TIM_PWM_ConfigChannel(&hTIM3, &sOCConfig, TIM_CHANNEL_2) ;

sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;

sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_ENABLE;

HAL_TIMEx_MasterConfigSynchronization(&hTIM3,&sMasterConfig) ;

HAL_TIM_MspPost_Init(&hTIM3);

HAL_TIM_Base_Start_IT(&hTIM3);

HAL_TIM_PWM_Start_IT(&hTIM3, TIM_CHANNEL_2);

}

#tim_parallelsynchro-stm32f103
1 REPLY 1
Jan Waclawek
Senior II
Posted on March 25, 2018 at 22:38

Update event lasts only one cycle, which is not something very useful to use as a gate.

JW