using TIM1 on stm32f103t8 (36pins)

[hannes_bauer]

Posted on December 17, 2008 at 16:22

using TIM1 on stm32f103t8 (36pins)

[hannes_bauer]

Posted on May 17, 2011 at 12:56

Hello there!

I'm pretty new with the stm32 and I worked with the st motor control eval board with the 100 pins stm32, where I used tim1 for 6step pwm generation on GIOPE8,9,10,11,12,13- it all worked fine. However, now im using the 36 pin version (stm32f103t8) where tim1 can only be used at pins PA8,9,10 (tim_ch1,ch2,ch3) and PA7,PB0,PB1(tim_ch1n,ch2n,ch3n). source code: #include ''stm32f10x_dbg.h'' /* Private typedef --------*/ /* Private define ---------*/ /* Private macro ----------*/ /* Private variables ------*/ /* Private function prototypes -------------*/ void NVIC_Configuration(void); void GPIO_Configuration(void); void RCC_Configuration(void); void BLDC_Start_Position(void); TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; TIM_BDTRInitTypeDef TIM_BDTRInitStructure; USART_InitTypeDef USART_InitStructure; /******************************************************************************* * Function Name : main * Description : Main program. * Input : None * Output : None * Return : None *******************************************************************************/ int main(void) { #ifdef DEBUG //debug(); #endif NVIC_Configuration(); RCC_Configuration(); GPIO_Configuration(); /* TIM1 Counter Clock stopped when the core is halted */ DBG->CR |= DBG_TIM1_STOP ; BLDC_Start_Position(); while(1); } /******************************************************************************* * Function Name : GPIO_Configuration * Description : Configures the TIM1 Pins. * Input : None * Output : None * Return : None *******************************************************************************/ void GPIO_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; GPIO_StructInit(&GPIO_InitStructure); GPIO_PinRemapConfig(GPIO_PartialRemap_TIM1, ENABLE); GPIO_DeInit(GPIOA); GPIO_DeInit(GPIOB); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_7; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOB, &GPIO_InitStructure); } /******************************************************************************* * Function Name : RCC_Configuration * Description : Configures the different system clocks. * Input : None * Output : None * Return : None *******************************************************************************/ void RCC_Configuration(void) { ErrorStatus HSEStartUpStatus; /* RCC system reset(for debug purpose) */ RCC_DeInit(); /* Enable HSE */ RCC_HSEConfig(RCC_HSE_ON); /* Wait till HSE is ready */ HSEStartUpStatus = RCC_WaitForHSEStartUp(); if(HSEStartUpStatus == SUCCESS) { /* HCLK = SYSCLK */ RCC_HCLKConfig(RCC_SYSCLK_Div1); /* PCLK2 = HCLK */ RCC_PCLK2Config(RCC_HCLK_Div1); /* PCLK1 = HCLK/2 */ RCC_PCLK1Config(RCC_HCLK_Div2); /* Flash 2 wait state */ FLASH_SetLatency(FLASH_Latency_2); /* Enable Prefetch Buffer */ FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable); /* PLLCLK = 8MHz * 9 = 72 MHz */ RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9); /* Enable PLL */ RCC_PLLCmd(ENABLE); /* Wait till PLL is ready */ while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET) { } /* Select PLL as system clock source */ RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); /* Wait till PLL is used as system clock source */ while(RCC_GetSYSCLKSource() != 0x08) { } } RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO | RCC_APB2Periph_TIM1, ENABLE); } /******************************************************************************* * Function Name : NVIC_Configuration * Description : Configures the Vector Table base address. * Input : None * Output : None * Return : None *******************************************************************************/ void NVIC_Configuration(void) { #ifdef VECT_TAB_RAM /* Set the Vector Table base location at 0x20000000 */ NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0); #else /* VECT_TAB_FLASH */ /* Set the Vector Table base location at 0x08000000 */ NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0); #endif /* 4Bits for subpriority and 0 bits for pre-emption */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); } void BLDC_Start_Position(void) { TIM_SetTimeBase(TIM1,5000); //50 /* Channel 1, 2,3 and 4 Configuration in PWM mode */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable; TIM_OCInitStructure.TIM_Pulse = TIM_GetPeriod(TIM1)/2; 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_OCNIdleState_Set; TIM_OC1Init(TIM1, &TIM_OCInitStructure); TIM_OC2Init(TIM1, &TIM_OCInitStructure); TIM_OC3Init(TIM1, &TIM_OCInitStructure); /* 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 = 1; TIM_BDTRInitStructure.TIM_Break = TIM_Break_Enable; TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_Low; TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable; TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure); /* TIM1 counter enable */ TIM_Cmd(TIM1, ENABLE); /* Main Output Enable */ TIM_CtrlPWMOutputs(TIM1, ENABLE); } Its not really different to the code I use for the eval board except the Pins I use and the remap is here partial and for the eval board full. When I simulate it in KEIL it the pins PA9,10 and PB0,1 react sa they should - but no reaction at pins PA8 and PA7. Then running it on hardware nothing happens not a single pin does anything. I tried setting the pins manually works perfectly but in connection with the timer nothing happens. What am I doing wrong? Please help me, its driving me INSANE :o best regards Hannes[ This message was edited by: hannes_bauer on 17-12-2008 20:55 ]