现在写的是用电阻变化的大小来控制PWM的变化
只是白色亮度大小的变化
延时的时候会出现颜色的变化
改进ing
#include "stm32f10x.h" #include "stm32_eval.h" #include #define VREF 3.3 int temp0,temp1,temp2; /*延时函数 微秒*/ void delay_us(u32 n) { u8 j; while(n--) for(j=0;j<10;j++); } /*延时函数 毫秒*/ void delay_ms(u32 n) { while(n--) delay_us(1000); } GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; USART_ClockInitTypeDef USART_ClockInitStructure; void RCC_Configuration(void) { SystemInit(); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOD, &GPIO_InitStructure); GPIO_ResetBits(GPIOD,GPIO_Pin_2); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7); RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); } void USART_int(long BaudRate) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOA, &GPIO_InitStructure); /* PA10 USART1_Rx */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure); USART_InitStructure.USART_BaudRate = BaudRate;//?????? USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???????8bit USART_InitStructure.USART_StopBits = USART_StopBits_1;//????1 USART_InitStructure.USART_Parity = USART_Parity_No;//???? USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//??????none USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//?????????? USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low; USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge; USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable; USART_ClockInit(USART1, &USART_ClockInitStructure); USART_Init(USART1, &USART_InitStructure); USART_Cmd(USART1, ENABLE); USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); USART_Cmd(USART1, ENABLE); } void GPIO_INIT() { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); //RCC_APB2Periph_GPIOB 开启GPIOB的时钟 ENABLE\DISABLE 打开or关闭 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10;//按键使用PC8-10 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度:配置晶振 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //模式:Out_PP推挽输出,可做输出,输入 !!! GPIO_Init(GPIOC, &GPIO_InitStructure); } void ADC_CONFIG(){ ADC_InitTypeDef ADC_InitStructure; #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) /* ADCCLK = PCLK2/2 */ RCC_ADCCLKConfig(RCC_PCLK2_Div2); #else /* ADCCLK = PCLK2/4 */ RCC_ADCCLKConfig(RCC_PCLK2_Div4); #endif ADC_DeInit(ADC1); /* Enable ADC1 and GPIOC clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOB, ENABLE); /* Configure PB0 (ADC Channel14) as analog input -------------------------*/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; GPIO_Init(GPIOB, &GPIO_InitStructure); /* ADC1 configuration ------------------------------------------------------*/ ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; ADC_InitStructure.ADC_ScanConvMode = ENABLE; ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; ADC_InitStructure.ADC_NbrOfChannel = 1; ADC_Init(ADC1, &ADC_InitStructure); /* Enable ADC1 DMA */ ADC_DMACmd(ADC1, ENABLE); /* Enable ADC1 */ ADC_Cmd(ADC1, ENABLE); } int Get_ADC(){ /* ADC1 regular channel configuration */ ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_55Cycles5); /* Enable ADC1 reset calibration register */ ADC_ResetCalibration(ADC1); /* Check the end of ADC1 reset calibration register */ while(ADC_GetResetCalibrationStatus(ADC1)); /* Start ADC1 calibration */ ADC_StartCalibration(ADC1); /* Check the end of ADC1 calibration */ while(ADC_GetCalibrationStatus(ADC1)); /* Start ADC1 Software Conversion */ ADC_SoftwareStartConvCmd(ADC1, ENABLE); return ADC_GetConversionValue(ADC1); } void PWM_Config() {uint16_t PrescalerValue = 0; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;//定义结构体 TIM_OCInitTypeDef TIM_OCInitStructure; RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//打开TIM2,TIM2挂在AP1上 RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO , ENABLE);//一、开启功能复用 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;//所需的3个管脚,复用输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); // GPIO_SetBits(GPIOA,GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3); // delay_ms(20); TIM_Cmd(TIM2, ENABLE); PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1;//二、配置TIM2 /* Time base configuration */ TIM_TimeBaseStructure.TIM_Period = 0x0FFE; TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;//三、脉冲宽度调制模式1 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; /* PWM1 Mode configuration: Channel2 *///四、 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//选择输出比较状态 TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//IM_Pulse-设置了待装入捕获比较寄存器的脉冲值,取值在0x0000-0xFFFF之间 TIM_OC2Init(TIM2, &TIM_OCInitStructure); /* PWM1 Mode configuration: Channel3 */ TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//0x0000最亮,0xFFFF熄灭 TIM_OC3Init(TIM2, &TIM_OCInitStructure); /* PWM1 Mode configuration: Channel4 */ TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = 0xFFFF; TIM_OC4Init(TIM2, &TIM_OCInitStructure); TIM_ARRPreloadConfig(TIM2, ENABLE);//reload-重新装载初始值 } //void RGB(int a) //{ //// int VCC; //// VCC=a; // //temp1-Red,temp2-Green,temp0-Blue // if(!GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_9)) //判断按键是否被按下 // { // delay_ms(50); //延时去抖 // if(!GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_9)) //判断按键是否被按下 假如端口PC8为低电平 // { // printf(" !!!!!!!!!!!!!!!!!!!!!\r\n"); // //GPIO_ResetBits(GPIOA,GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3); // TIM_SetCompare2(TIM2,a);delay_ms(100); //设置TIM2捕获比较器2寄存器的值 // TIM_SetCompare3(TIM2,a);delay_ms(100);//TIM——通道数(定时器,数值) // TIM_SetCompare4(TIM2,a);delay_ms(100); // } // } //} int main(void) { float Volt=0.00; int ADValue = 0; RCC_Configuration(); USART_int(115200);//设置波特率 GPIO_INIT(); ADC_CONFIG(); printf(" config done...\r\n"); Get_ADC(); delay_ms(1000); PWM_Config(); delay_ms(1000); while(1) { ADValue = Get_ADC(); // RGB(ADValue); Volt = VREF*ADValue/4095;//实际电压 printf("===============================\r\n"); printf("The ADC value is:%d\r\n",ADValue); printf("The Volt is:%f V\r\n",Volt); delay_ms(500); // if(!GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_9)) //判断按键是否被按下 // { // delay_ms(50); //延时去抖 // if(!GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_9)) //判断按键是否被按下 假如端口PC8为低电平 // { TIM_SetCompare2(TIM2,ADValue);delay_ms(100); //设置TIM2捕获比较器2寄存器的值 TIM_SetCompare3(TIM2,ADValue);delay_ms(100);//TIM——通道数(定时器,数值) TIM_SetCompare4(TIM2,ADValue);delay_ms(100); // } // } } } #ifdef USE_FULL_ASSERT void assert_failed(uint8_t* file, uint32_t line) { while (1) { } } #endif #ifdef __GNUC__ #define PUTCHAR_PROTOTYPE int __io_putchar(int ch) #else #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f) #endif /* __GNUC__ */ PUTCHAR_PROTOTYPE { USART_SendData(EVAL_COM1, (uint8_t) ch); while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET) {} return ch; } #ifdef USE_FULL_ASSERT void assert_failed(uint8_t* file, uint32_t line) { while (1) { } } #endif