STM32F RFID通讯源代码（支持双向发送接收）

				// ADC.c
				#include "stm32f10x_lib.h"
				#include "adc.h"
				
				
				ADC_InitTypeDef   ADC_InitStructure;
				GPIO_InitTypeDef GPIO_InitStructure;
				
				void ADCInit(void) {
				
				  // ADC init
				  // ADC Deinit
				  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1|RCC_APB2Periph_ADC2|RCC_APB2Periph_GPIOA, ENABLE);
				  ADC_DeInit(ADC1);
				
				  // RA1 - analog input
				  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
				  GPIO_InitStructure.GPIO_Speed = 0;
				  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
				  GPIO_Init (GPIOA, &GPIO_InitStructure);
				
				  // ADC Structure Initialization
				  ADC_StructInit(&ADC_InitStructure);
				
				  // Preinit
				  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
				  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
				  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
				  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 the ADC
				  ADC_Cmd(ADC1, ENABLE);
				}
				
				Int16U GetADCChanel(Int8U chanel) {
				
				  // Configure chanel
				  ADC_RegularChannelConfig(ADC1, chanel, 1, ADC_SampleTime_55Cycles5);
				
				  // Start the conversion
				  ADC_SoftwareStartConvCmd(ADC1, ENABLE);
				
				  // Wait until conversion completion
				  while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);
				
				  // Get the conversion value
				  return ADC_GetConversionValue(ADC1);
				
				}