使用 C++ 语言给 STM32 编写一个 Adc 类

我使用的STM32芯片：STM32F103ZET6
我们使用的STM32库版本：V3.5.0

注意：

• 想学习本套 STM32 C++编程 的专栏是有点门槛的。你需要有一点点 STM32 基础 和 一点点 C++ 语言基础。

• 完整的STM32 C++ Adc类 的下载地址可以在本篇博客的最下面找到。

Adc.cpp

#include "Adc.h"using namespace stm32f10x;Adc::Adc(ADC_TypeDef* ADCx, uint8_t ADC_Channel):adcx(ADCx), channel(ADC_Channel){initialize();start();
}void Adc::initialize(){switch(channel){case 0:a = new Gpio(PA, 0, GPIO_Mode_AIN); delete a;   break;case 1:a = new Gpio(PA, 1, GPIO_Mode_AIN); delete a;   break;case 2:a = new Gpio(PA, 2, GPIO_Mode_AIN); delete a;   break;case 3:a = new Gpio(PA, 3, GPIO_Mode_AIN); delete a;   break;case 4:switch((uint32_t)adcx){case (uint32_t)ADC1:case (uint32_t)ADC2:a = new Gpio(PA, 4, GPIO_Mode_AIN); delete a;   break;  case (uint32_t)ADC3:a = new Gpio(PF, 6, GPIO_Mode_AIN); delete a;   break;                      }break;case 5:switch((uint32_t)adcx){case (uint32_t)ADC1:case (uint32_t)ADC2:a = new Gpio(PA, 5, GPIO_Mode_AIN); delete a;   break;  case (uint32_t)ADC3:a = new Gpio(PF, 7, GPIO_Mode_AIN); delete a;   break;                      }break;case 6:switch((uint32_t)adcx){case (uint32_t)ADC1:case (uint32_t)ADC2:a = new Gpio(PA, 6, GPIO_Mode_AIN); delete a;   break;  case (uint32_t)ADC3:a = new Gpio(PF, 8, GPIO_Mode_AIN); delete a;   break;                      }break;case 7:switch((uint32_t)adcx){case (uint32_t)ADC1:case (uint32_t)ADC2:a = new Gpio(PA, 7, GPIO_Mode_AIN); delete a;   break;  case (uint32_t)ADC3:a = new Gpio(PF, 9, GPIO_Mode_AIN); delete a;   break;                      }break;case 8:switch((uint32_t)adcx){case (uint32_t)ADC1:case (uint32_t)ADC2:a = new Gpio(PB, 0, GPIO_Mode_AIN); delete a;   break;  case (uint32_t)ADC3:a = new Gpio(PF, 10, GPIO_Mode_AIN); delete a;  break;                      }break;case 9:switch((uint32_t)adcx){case (uint32_t)ADC1:case (uint32_t)ADC2:a = new Gpio(PB, 1, GPIO_Mode_AIN); delete a;   break;  }break;case 10:a = new Gpio(PC, 0, GPIO_Mode_AIN); delete a;   break;case 11:a = new Gpio(PC, 1, GPIO_Mode_AIN); delete a;   break;case 12:a = new Gpio(PC, 2, GPIO_Mode_AIN); delete a;   break;case 13:a = new Gpio(PC, 3, GPIO_Mode_AIN); delete a;   break;case 14:switch((uint32_t)adcx){case (uint32_t)ADC1:case (uint32_t)ADC2:a = new Gpio(PC, 4, GPIO_Mode_AIN); delete a;   break;  }break;case 15:switch((uint32_t)adcx){case (uint32_t)ADC1:case (uint32_t)ADC2:a = new Gpio(PC, 5, GPIO_Mode_AIN); delete a;   break;  }break;}ADC_InitTypeDef ADC_InitStructure; if((uint32_t)adcx < APB2PERIPH_BASE){uint32_t RCC_APB1Periph = (uint32_t)(1<< ( ((uint32_t)adcx-APB1PERIPH_BASE)>>10));RCC_APB1PeriphClockCmd(RCC_APB1Periph, ENABLE);}else{uint32_t RCC_APB2Periph = (uint32_t)(1<< ( ((uint32_t)adcx-APB2PERIPH_BASE)>>10));      RCC_APB2PeriphClockCmd(RCC_APB2Periph, ENABLE);}RCC_ADCCLKConfig(RCC_PCLK2_Div6);   //设置ADC分频因子6 72M/6=12,ADC最大时间不能超过14M//  ADC_DeInit(ADC1);  //复位ADC1,将外设 ADC1 的全部寄存器重设为缺省值ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;  //ADC工作模式:ADC1和ADC2工作在独立模式ADC_InitStructure.ADC_ScanConvMode = DISABLE;   //模数转换工作在单通道模式ADC_InitStructure.ADC_ContinuousConvMode = DISABLE; //模数转换工作在单次转换模式ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //转换由软件而不是外部触发启动ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;  //ADC数据右对齐ADC_InitStructure.ADC_NbrOfChannel = 1; //顺序进行规则转换的ADC通道的数目ADC_Init(adcx, &ADC_InitStructure); //根据ADC_InitStruct中指定的参数初始化外设ADCx的寄存器   ADC_Cmd(adcx, ENABLE);  //使能指定的ADC1ADC_ResetCalibration(adcx); //使能复位校准  while(ADC_GetResetCalibrationStatus(adcx)); //等待复位校准结束ADC_StartCalibration(adcx);  //开启AD校准while(ADC_GetCalibrationStatus(adcx));   //等待校准结束
//  ADC_SoftwareStartConvCmd(ADC1, ENABLE);     //使能指定的ADC1的软件转换启动功能
}uint16_t Adc::read(){//设置指定ADC的规则组通道，一个序列，采样时间ADC_RegularChannelConfig(adcx, channel, 1, ADC_SampleTime_239Cycles5 ); //ADC1,ADC通道,采样时间为239.5周期                   ADC_SoftwareStartConvCmd(adcx, ENABLE);     //使能指定的ADC1的软件转换启动功能    while(!ADC_GetFlagStatus(adcx, ADC_FLAG_EOC ));//等待转换结束return ADC_GetConversionValue(adcx);    //返回最近一次ADC1规则组的转换结果
}uint16_t Adc::read(uint8_t cout){u32 temp_val=0;u8 t;for(t=0;t<cout;t++){temp_val+= read();}return temp_val/cout;
}void Adc::start(){ADC_SoftwareStartConvCmd(ADC1, ENABLE);     //使能指定的ADC1的软件转换启动功能
}void Adc::stop(){ADC_SoftwareStartConvCmd(ADC1, DISABLE);        //使能指定的ADC1的软件转换启动功能
}

Adc.h

#ifndef __AOBO_Stm32f10x_Adc_H_
#define     __AOBO_Stm32f10x_Adc_H_#include "stm32f10x.h"
#include "Gpio.h"namespace stm32f10x{class Adc{public:Adc(ADC_TypeDef* ADCx, uint8_t ADC_Channel);void initialize();uint16_t read();uint16_t read(uint8_t cout);void start();void stop();private:Gpio *a;ADC_TypeDef* adcx;uint8_t channel;
};}#endif

main.cpp

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "Gpio.h"
#include "Usart.h"
#include "Adc.h"using namespace stm32f10x;
/* Private functions ---------------------------------------------------------*//*** @brief  Main program.* @param  None* @retval None*/int main(void){Usart serial(USART1, 115200);Adc adc1(ADC3, 11);while(true){serial.println("ADC1: %d", adc1.read());}}

搞定

你可以到这里下载我已经做好的 STM32 C++ Adc类：
百度云 链接：http://pan.baidu.com/s/1bpbZ2MV 密码：esam
也可以在CSDN里面下载：http://download.csdn.net/detail/github_35160620/9624596

小结：
下一讲，我们来使用 C++ 语言，创建一个 STM32 的 硬件 I2c 类。