Problem with TIM1 in stm32f103RB

[msanchez]

Posted on November 24, 2015 at 12:34

Hello,

I'm programming a timer in stm32f103rb but when I load the code the IAR show me an error. This code goes well in another microcontroller stm32f103RD. I show the code:/* Public variables ----------------------------------------------------------*/GPIO_InitTypeDef GPIO_InitStruct;NVIC_InitTypeDef NVIC_InitStruct;TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;USART_InitTypeDef USART_InitStructure;uint8_t TXON_INTERRUPCION[14] = ''\nINTERRUPCIÓN''; /* Public functions ----------------------------------------------------------*/void RCC_Config(){  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);                         // Enable GPIOA clock   RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);                          // Enable TIM1 clock  RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);                        // Enable USART1 clock }void GPIO_Config(){  /* Configuración GPIO para poner pin a nivel alto y bajo*/  GPIO_InitStruct.GPIO_Pin =  GPIO_Pin_11;                                      // We are going to use PA11  GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;                                 // Alternate function Push-Pull mode                                    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;                                // Set GPIO speed  GPIO_Init(GPIOA, &GPIO_InitStruct);                                           // GPIOA11 ready    /* Configure Transmissor */  GPIO_InitStruct.GPIO_Pin =  GPIO_Pin_9;                                       // We are going to use PA9  GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_PP;                                  // Alternate function Push-Pull mode                                    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;                                // Set GPIO speed  GPIO_Init(GPIOA, &GPIO_InitStruct);                                           // GPIOA9 ready}void USART_Config(){  USART_InitStructure.USART_BaudRate = 9600;  USART_InitStructure.USART_WordLength = USART_WordLength_8b;  USART_InitStructure.USART_StopBits = USART_StopBits_1;  USART_InitStructure.USART_Parity = USART_Parity_No;  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;  USART_Init(USART1, &USART_InitStructure);  USART_Cmd(USART1, ENABLE);}                void txon(uint8_t TAM[], uint8_t size){  uint8_t i=0;                                                                  // Index for a loop    for (i=0;i<size;i++)                                                          // Sending TAM[] by USART  {    while (!USART_GetFlagStatus(USART1, USART_FLAG_TXE));    USART_SendData(USART1, TAM[i]);  }  while(!USART_GetFlagStatus(USART1, USART_FLAG_TC));                           // Waiting for complete transmission}void NVIC_Config(){  NVIC_SetPriorityGrouping(NVIC_PriorityGroup_0);  /* Configure TIM1 IRQ*/  NVIC_InitStruct.NVIC_IRQChannel = TIM1_UP_IRQn;  NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 1;  NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1;  NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;  NVIC_Init(&NVIC_InitStruct);}void TIM_Config(){  TIM_TimeBaseInitStructure.TIM_Period = 51445 - 1;                             // Configures the period value to be loaded into the active Auto-Reload Register at the next update event 60000 - 1 (0xEA5F)  TIM_TimeBaseInitStructure.TIM_Prescaler = 36000 - 1;                          // Configure the prescaler value used to divide the TIM clock [0x0000 - 0xFFFF] 36000 - 1 (0x8C9F)  TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;                   // Configures the clock division  TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;               // TIM Upcounting mode  TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 6;                          // TIM counter repetition  TIM_TimeBaseInit(TIM1, &TIM_TimeBaseInitStructure);}void TIM1_UP_IRQHandler(void){  if (TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET)  {    /*Clear the Update pending bit*/    TIM_ClearITPendingBit(TIM1, TIM_IT_Update);        /*Comprobación del tiempo que tarda en generar la interrupción*/    GPIO_SetBits(GPIOA, GPIO_Pin_11);    GPIO_ResetBits(GPIOA, GPIO_Pin_11);    txon(TXON_INTERRUPCION,15);  }}/**  * @brief  Main program  * @param  None  * @retval None  */void main(void){  RCC_Config();   GPIO_Config();                                                                // Setup GPIO  USART_Config();  TIM_Config();  NVIC_Config();    /*Enable the TIM Update Interrupt*/  TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE);  /*TIM counter enable*/  TIM_Cmd(TIM1, ENABLE);    NVIC_EnableIRQ(TIM1_UP_IRQn);    while(1);}

[Tesla DeLorean]

Posted on November 24, 2015 at 12:44

but when I load the code the IAR show me an error

Error says what?

[msanchez]

Posted on November 25, 2015 at 09:18

Now I don't have any error, the only problem is that the timer doesn't work. The first time the function work but then doesn't work again.

[msanchez]

Posted on November 25, 2015 at 10:37

The code is correct and works well. I think the problem is in the PCB design. Sorry!!

Thank you.