Mistake?

[franck2]

Posted on December 10, 2014 at 11:10The original post was too long to process during our migration. Please click on the attachment to read the original post.

[franck2]

Posted on December 10, 2014 at 11:19

I found an error in the code:

clock of TIM15 and TIM16 not enabeled. Actually:  /* TIM2, TIM3 and TIM4 clock enable */   RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 | RCC_APB1Periph_TIM3 | RCC_APB1Periph_TIM4 , ENABLE); Should be replaced by:  /* TIM2, TIM15 and TIM16 clock enable */   RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM16, ENABLE);    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM15, ENABLE);

[Amel NASRI]

Posted on December 10, 2014 at 15:18

No TIM3 or TIM4 available for that STM32F302!

That is true only for STM32F302x6/8. These 2 timers are available in STM32F302xB/C.-Mayla-

[franck2]

Posted on December 17, 2014 at 17:33

I'm trying to port the ST TIM_Synchronization to my evaluation board Nucleo STM32F302R8T6 without success.

I used only 2 cascaded timers TIM1 & TIM2. TIM1 is configured as Master Timer:          - PWM Mode is used          - The TIM1 Update event is used as Trigger Output   TIM2 is slave for TIM1          - PWM Mode is used          - The ITR1(TIM1) is used as input trigger          - Gated mode is used, so start and stop of slave counter are controlled by the Master trigger output signal(TIM1 update event). Here is my code:/**   ******************************************************************************   * @file    TIM/TIM_Synchronization/main.c     ******************************************************************************   */ /* Includes ------------------------------------------------------------------*/ #include ''stm32f30x.h'' /* Private function prototypes -----------------------------------------------*/ static void TIM_Config(void); /* Private functions ---------------------------------------------------------*/ /**   * @brief  Configure the TIMs.   * @param  None   * @retval None   */ static void TIM_Config(void) {   GPIO_InitTypeDef GPIO_InitStructure;   TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;   TIM_OCInitTypeDef  TIM_OCInitStructure;     int Prescaler, Period;          /* TIM2, TIM1 clock enable */     RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);   RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);          /* GPIOA clocks enable */   RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);        /* GPIOA Configuration: TIM2_CH1 as alternate function push-pull */   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;   GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;          GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 ;   GPIO_Init(GPIOA, &GPIO_InitStructure);   GPIO_PinAFConfig(GPIOA, GPIO_PinSource8, GPIO_AF_6); // TIM1_CH1 PA8 AF6       GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 ;   GPIO_Init(GPIOA, &GPIO_InitStructure);   GPIO_PinAFConfig(GPIOA, GPIO_PinSource0, GPIO_AF_1); // TIM2_CH1 PA0 AF1   Prescaler = (SystemCoreClock / 8000000); // 8 MHz timebase, assumes APB2 H/1 TIMCLK1 H/1   Period = 8000000 / 200000; // 8 MHz -> 200 KHz                /* Time base configuration */   TIM_TimeBaseStructure.TIM_Period = Period - 1;   TIM_TimeBaseStructure.TIM_Prescaler = Prescaler - 1;   TIM_TimeBaseStructure.TIM_ClockDivision = 0;   TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;   TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);     /* Master Configuration in PWM1 Mode */   TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;   TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;   TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;     TIM_OCInitStructure.TIM_Pulse = Period / 2; // 50%   TIM_OC1Init(TIM1, &TIM_OCInitStructure);       /* Enable pins, TIM1 more sensitive */         TIM_CtrlPWMOutputs(TIM1, ENABLE);        /* TIM1 enable counter */         TIM_Cmd(TIM1, ENABLE);   /* Timers synchronisation in cascade mode ----------------------------      1/TIM1 is configured as Master Timer:          - PWM Mode is used          - The TIM1 Update event is used as Trigger Output        2/TIM2 is slave for TIM1          - PWM Mode is used          - The ITR1(TIM1) is used as input trigger          - Gated mode is used, so start and stop of slave counter            are controlled by the Master trigger output signal(TIM1 update event).   --------------------------------------------------------------------------- */        /* Select the Master Slave Mode */   TIM_SelectMasterSlaveMode(TIM1, TIM_MasterSlaveMode_Enable);   /* Master Mode selection */   TIM_SelectOutputTrigger(TIM1, TIM_TRGOSource_Update);   /* Slaves Configuration: PWM1 Mode */   TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;       TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;       TIM_OCInitStructure.TIM_Pulse = Period / 2;   TIM_OC1Init(TIM2, &TIM_OCInitStructure);   /* Slave Mode selection: TIM2 */   TIM_SelectSlaveMode(TIM2, TIM_SlaveMode_Gated);   TIM_SelectInputTrigger(TIM2, TIM_TS_ITR1);   /* TIM enable counter */   TIM_Cmd(TIM2, ENABLE); } /**   * @brief  Main program.   * @param  None   * @retval None   */ int main(void) {   /*!< At this stage the microcontroller clock setting is already configured,        this is done through SystemInit() function which is called from startup        file (startup_stm32f30x.s) before to branch to application main.        To reconfigure the default setting of SystemInit() function, refer to        system_stm32f30x.c file      */   /* TIMs Configuration */   TIM_Config();   /* Infinite loop */   while (1)   {   } } #ifdef  USE_FULL_ASSERT /**   * @brief  Reports the name of the source file and the source line number   *         where the assert_param error has occurred.   * @param  file: pointer to the source file name   * @param  line: assert_param error line source number   * @retval None   */ void assert_failed(uint8_t* file, uint32_t line) {   /* User can add his own implementation to report the file name and line number,      ex: printf(''Wrong parameters value: file %s on line %d\r\n'', file, line) */   /* Infinite loop */   while (1)   {   } } #endif /**   * @}   */ /**   * @}   */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ Thanks for any help.

[franck2]

Posted on December 18, 2014 at 10:54

Any avalaible help?

Or working example? Thanks

[franck2]

Posted on December 18, 2014 at 11:19

Is there some internal trigger connection?

Changing from ITR0 gives result.