this is working code with %50 duty cycle and 36khz at pa.06 pin simulation is posible via simulator . i have added it...
#include "stm32f10x_lib.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
u16 CCR1_Val = 500;
ErrorStatus HSEStartUpStatus;
/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
/* Private functions ---------------------------------------------------------*/
/*******************************************************************************
* Function Name : main
* Description : Main program
* Input : None
* Output : None
* Return : None
*******************************************************************************/
int main(void)
{ #ifdef DEBUG debug();
#endif
/* System Clocks Configuration */ RCC_Configuration();
/* NVIC Configuration */ NVIC_Configuration();
/* GPIO Configuration */ GPIO_Configuration();
/* ----------------------------------------------------------------------- TIM3 Configuration: generate 4 PWM signals with 4 different duty cycles: TIM3CLK = 36 MHz, Prescaler = 0x0, TIM3 counter clock = 36 MHz TIM3 ARR Register = 999 => TIM3 Frequency = TIM3 counter clock/(ARR + 1) TIM3 Frequency = 36 KHz. TIM3 Channel1 duty cycle = (TIM3_CCR1/ TIM3_ARR)* 100 = 50%
----------------------------------------------------------------------- */
/* Time base configuration */ TIM_TimeBaseStructure.TIM_Period = 999; TIM_TimeBaseStructure.TIM_Prescaler = 0; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
/* PWM1 Mode configuration: Channel1 */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = CCR1_Val; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM3, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_ARRPreloadConfig(TIM3, ENABLE);
/* TIM3 enable counter */ TIM_Cmd(TIM3, ENABLE);
while (1) {}
}
/*******************************************************************************
* Function Name : RCC_Configuration
* Description : Configures the different system clocks.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void RCC_Configuration(void)
{ /* 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) { /* Enable Prefetch Buffer */ FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* Flash 2 wait state */ FLASH_SetLatency(FLASH_Latency_2);
/* HCLK = SYSCLK */ RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */ RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/4 */ RCC_PCLK1Config(RCC_HCLK_Div4);
/* 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) {} }
/* TIM3 clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
/* GPIOA and GPIOB clock enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE);
}
/*******************************************************************************
* Function Name : GPIO_Configuration
* Description : Configure the TIM3 Ouput Channels.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void GPIO_Configuration(void)
{ GPIO_InitTypeDef GPIO_InitStructure;
/*GPIOA Configuration: TIM3 channel 1 and 2 as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 ; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
/*******************************************************************************
* Function Name : NVIC_Configuration
* Description : Configures Vector Table base location.
* 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
}
#ifdef DEBUG
/*******************************************************************************
* Function Name : assert_failed
* Description : Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* Input : - file: pointer to the source file name
* - line: assert_param error line source number
* Output : None
* Return : None
*******************************************************************************/
void assert_failed(u8* file, u32 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) */
while (1) {}
} #endif
/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
all the working code is link seen below...
http://rapidshare.com/files/266622881/pwmkeil.rar.html