STM32+按键调控PWM输出+串口输出占空比.pdf

发布时间：2022-05-31 发布人：admin 分类：说明书资料大小：0.06M 资料格式：pdf 举报版权申诉

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STM32+ PWM + minios@yeah.net GPIO.c #include "STM32Lib\\stm32f10x.h" #include "hal.h" /********************************************************************** ********* * Function Name : GPIO_Configuration * PD3,PD4,PD5,PD6 * PB0,5,8,9; PC5,7; PD7 ;PA8 LED *********************************************************************** ********/ void GPIO_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; /* CLOCK, GPIO . STM32 ,,, STM32 ,*/ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); /* PC8 */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; // GPIO_Init(GPIOC, &GPIO_InitStructure); /* PC9 */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; // GPIO_Init(GPIOC, &GPIO_InitStructure); }

hal.h #ifndef HAL_H #define HAL_H // extern void ChipHalInit(void); extern void ChipOutHalInit(void); // #define GET_LEFT() (GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_8)) #define GET_RIGHT() (GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_9)) extern void USART1_Putc(u8 c); extern void USART_Configuration(void); extern void USART1_Puts(char * str); #endif TIM.c #include "STM32Lib\\stm32f10x.h" void Tim1_Configuration(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; GPIO_InitTypeDef GPIO_InitStructure; /* PA8 (PWM) */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE); TIM_DeInit(TIM1); /*TIM1 */

TIM_TimeBaseStructure.TIM_Prescaler = 72; //( )72M/72=1000K TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; // TIM_TimeBaseStructure.TIM_Period = 2000; // 1000k/2000=500hz TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimeBaseStructure.TIM_RepetitionCounter = 0x0; TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure); /* Channel 1 Configuration in PWM mode */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //PWM 2 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; // TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;// TIM_OCInitStructure.TIM_Pulse = 300; // TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; // TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High; // TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set; TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset; TIM_OC1Init(TIM1,&TIM_OCInitStructure); // 1 /* TIM1 counter enable */ TIM_Cmd(TIM1,ENABLE); /* TIM1 Main Output Enable */ TIM_CtrlPWMOutputs(TIM1,ENABLE); } // 1 void SetT1Pwm1(u16 pulse) { TIM1->CCR1=pulse; } main.c

/************************************************************ **:PWM **: PA8 PWM , *************************************************************/ #include "STM32Lib\\stm32f10x.h" #include "hal.h" #define SIZE 0 u8 table[11]={"0123456789 "}; char buffer[10]={"0000000000"}; void Delay(u16 n); void d_2_char(u32 x) { buffer[SIZE+0]=table[x%10000000000/100000]; buffer[SIZE+1]=table[x%1000000000/100000]; buffer[SIZE+2]=table[x%100000000/100000]; buffer[SIZE+3]=table[x%10000000/10000]; buffer[SIZE+4]=table[x%1000000/10000]; buffer[SIZE+5]=table[x%100000/10000]; buffer[SIZE+6]=table[x%10000/1000]; buffer[SIZE+7]=table[x%1000/100]; buffer[SIZE+8]=table[x%100/10]; buffer[SIZE+9]=table[x%10]; } // void Delay(u16 speed) { u16 i; while(speed!=0) { speed--; for(i=0;i<400;i++); } } extern void SetT1Pwm1(u16 pulse); int main(void) { u16 pulse=300; ChipHalInit(); // ChipOutHalInit(); //

for(;;) { if(GET_LEFT()==0) { while(GET_LEFT()==0); if(pulse<=2000) { pulse+=30; // SetT1Pwm1(pulse); } else { pulse=300; } d_2_char(pulse); USART1_Puts(buffer); USART1_Puts("\r\n"); } if(GET_RIGHT()==0) { while(GET_RIGHT()==0); if(pulse<=2000) { pulse-=60; } else { pulse=1800; } d_2_char(pulse); USART1_Puts(buffer); USART1_Puts("\r\n"); } SetT1Pwm1(pulse); }

} 不

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