Posted on March 26, 2018 at 08:18hi
i have tried a lot to config pwm in stm32f103re with IAR but i could not do that activity.
i put the code here to get help from you guys . i am really confused.
please tell me my problem in code , and where i am wrong.
thanks a lot.
&sharpinclude 'stm32f10x.h'
&sharpinclude 'stm32f10x_gpio.h' // for Enable LCD
&sharpinclude 'stm32f10x_rcc.h' //for Enable LCD
&sharpinclude 'stm32f10x_tim.h'
&sharpinclude 'LCDLib.h'
&sharpinclude 'delay.h'
void tim_init(void);
void GPIO_init(void);
int main()
{
lcd_init();
lcdPutString ('Believe Your Dreams.');
tim_init();
GPIO_init();
while(1){
}
}
void tim_init(){
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_TimeBaseStructure.TIM_Prescaler = 8;
TIM_TimeBaseStructure.TIM_Period = 500;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
TIM_Cmd(TIM3, ENABLE);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 400;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC4Init(TIM3, &TIM_OCInitStructure);
TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable);
//GPIO_PinAFConfig(GPIOC, GPIO_PinSource9, GPIO_AF_TIM4);
}
void GPIO_init(void){
RCC_APB2PeriphClockCmd ( RCC_APB2Periph_GPIOC, ENABLE );
GPIO_InitTypeDef gpioAa;
gpioAa.GPIO_Mode = GPIO_Mode_AF_PP ;
gpioAa.GPIO_Pin = GPIO_Pin_9;
gpioAa.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init( GPIOC, &gpioAa );
}
#pwm
