STM8 控制电脑风扇转速 4PIN PWM

gjhk001 · 发表于 2020-7-10 18:16:23

个很简单的例子读取电位器电压，然后调整占空比

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程序代码：

#include "stm8s.h"
#include "stm8s_gpio.h"
#define PWM_F 640
uint8_t HexTable[]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
uint16_t CCR1_Val = 100;
void DelayApi(uint16_t uwDelayCnt);
void TIM2_Config(void);
void Init_UART1(void)
{
UART1_DeInit();
UART1_Init((u32)9600, UART1_WORDLENGTH_8D, UART1_STOPBITS_1, UART1_PARITY_NO, UART1_SYNCMODE_CLOCK_DISABLE, UART1_MODE_TX_ENABLE);
// UART1_Cmd(ENABLE);
}
void Send(uint8_t dat)
{
while(( UART1_GetFlagStatus(UART1_FLAG_TXE)==RESET));
UART1_SendData8(dat);
}
void Init_ADC(void)
{
//GPIO_Init(GPIOD, GPIO_PIN_2, GPIO_MODE_IN_FL_NO_IT);
ADC1_DeInit();
ADC1_Init(ADC1_CONVERSIONMODE_SINGLE, ADC1_CHANNEL_3, ADC1_PRESSEL_FCPU_D2, ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL3, ENABLE);
ADC1_Cmd(ENABLE);
}
void UART1_sendhex(unsigned char dat)
{
Send('0');
Send('x');
Send(HexTable[dat>>4]);
Send(HexTable[dat&0x0f]);
Send(' ');
}
void UART1_sendstr(unsigned char *dat)
{
while(*dat!='\0')
{
Send(*dat);
dat++;
//delay2us();
}
}
void main(void)
{
//FlagStatus flag_status;
u16 u16_adc1_value;
//Init_UART1();
Init_ADC();
CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);//16/1=16MHZ
GPIO_DeInit(GPIOD);
GPIO_Init(GPIOD,GPIO_PIN_2,GPIO_MODE_IN_PU_NO_IT);
//GPIO_DeInit(GPIOD);
GPIO_Init(GPIOD,GPIO_PIN_4,GPIO_MODE_OUT_PP_HIGH_SLOW);
TIM2_Config();
TIM2_SetCompare1(CCR1_Val);
/* Infinite loop */
while (1)
{
//Send(0xf0);
ADC1_StartConversion();
//flag_status = ADC1_GetFlagStatus(ADC1_FLAG_EOC);
// while(flag_status == RESET); // SET or RESET
while(RESET == ADC1_GetFlagStatus(ADC1_FLAG_EOC));
u16_adc1_value = ADC1_GetConversionValue();
//CCR1_Val=u16_adc1_value*2/3-66;
//CCR1_Val=101+u16_adc1_value*10/19;
/*if(u16_adc1_value<180)
{
CCR1_Val=70+u16_adc1_value*2;
}else
{
CCR1_Val=460+(u16_adc1_value-180)*10/47;
}
*/
if(u16_adc1_value<180)
{
if(u16_adc1_value<100){u16_adc1_value=100;}
CCR1_Val=u16_adc1_value+((u16_adc1_value-100)*36/10);
}else
{
CCR1_Val=460+(u16_adc1_value-180)*10/47;
}
if(CCR1_Val>30000)
CCR1_Val=0;
if(CCR1_Val>PWM_F && CCR1_Val<2000)
CCR1_Val=PWM_F-2;
TIM2_SetCompare1(CCR1_Val);
//UART1_sendhex((u16_adc1_value>>8));
//UART1_sendhex((u16_adc1_value&0xff));
//UART1_sendstr("\r\n");
//GPIO_WriteReverse(GPIOB,GPIO_PIN_5);
}
}
void TIM2_Config(void)
{
TIM2_TimeBaseInit(TIM2_PRESCALER_1, PWM_F);
TIM2_OC1Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR1_Val, TIM2_OCPOLARITY_HIGH);
TIM2_OC1PreloadConfig(ENABLE);
// TIM2_OC2Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR2_Val, TIM2_OCPOLARITY_HIGH);
// TIM2_OC2PreloadConfig(ENABLE);
// TIM2_OC3Init(TIM2_OCMODE_PWM1, TIM2_OUTPUTSTATE_ENABLE,CCR3_Val, TIM2_OCPOLARITY_HIGH);
// TIM2_OC3PreloadConfig(ENABLE);
TIM2_ARRPreloadConfig(ENABLE);
TIM2_Cmd(ENABLE);
}
void DelayApi(uint16_t uwDelayCnt)
{
while(uwDelayCnt--);
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval : 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) */
/* Infinite loop */
while (1)
{
}
}
#endif

[color=rgb(51, 102, 153) !important]复制代码
[color=rgb(51, 102, 153) !important]

kunchen · 发表于 2020-7-13 09:08:41

谢谢分享

njshenxian · 发表于 2020-7-13 09:08:25

然后调整占空比

liulong3071 · 发表于 2020-10-30 09:57:09

谢谢

marco5512 · 发表于 2023-2-16 11:06:30

謝謝分享!

STM8 控制电脑风扇转速 4PIN PWM

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