1.dht11的使用
硬件：3v3，gnd，data数据线接一个gpio，三根线即可
软件：
①dht11.c
#include "dht11.h"
#include "delay.h"
#include "stdbool.h"static STRUCT_DHT11_TYPEDEF dht11;/* 定义DQ端口 可以直接修改该宏定义更改DQ端口引脚定义 */
#define DHT11_GPIO_RCLK RCC_APB2Periph_GPIOA
#define DHT11_GPIO_PORT GPIOA
#define DHT11_GPIO_PIN GPIO_Pin_2#define DHT11_DQ(x) GPIO_WriteBit(DHT11_GPIO_PORT, DHT11_GPIO_PIN, (BitAction)x)
#define DHT11_DQ_STATUS GPIO_ReadInputDataBit(DHT11_GPIO_PORT, DHT11_GPIO_PIN)/*** @brief 配置DQ引脚为输入/输出模式* @param out true-输出 false-输入* @retval 无*/
static void dht11_set_inout(bool out)
{GPIO_InitTypeDef GPIO_InitStructure;RCC_APB2PeriphClockCmd(DHT11_GPIO_RCLK, ENABLE); /* 使能端口时钟 */if(out == true) {GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; /* 推挽输出 */}else {GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; /* 上拉输入 */}GPIO_InitStructure.GPIO_Pin = DHT11_GPIO_PIN; /* 端口配置 */GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(DHT11_GPIO_PORT, &GPIO_InitStructure); /* 初始化IO口 */
}/*** @brief 初始化DHT11的引脚* @param 无* @retval 无*/
static void dht11_gpio_config(void)
{GPIO_InitTypeDef GPIO_InitStructure;RCC_APB2PeriphClockCmd(DHT11_GPIO_RCLK, ENABLE); /* 使能端口时钟 */GPIO_InitStructure.GPIO_Pin = DHT11_GPIO_PIN; /* 端口配置 */GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; /* 推挽输出 */GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(DHT11_GPIO_PORT, &GPIO_InitStructure); /* 初始化IO口 */
}/*** @brief 初始化DHT11的结构体* @param 无* @retval 无*/
static void dht11_struct_config(void)
{dht11.temperature = 0.f;dht11.temperature_offset = -0.f;dht11.humidity = 0.f;dht11.humidity_offset = -0.f;
}/* 功能：向DHT11发送开始信号 */
static void dht11_start(void)
{dht11_set_inout(true); /* 配置为输出模式 */DHT11_DQ(0); /* 拉低DQ引脚 */delay_ms(20); /* 拉低至少18ms */DHT11_DQ(1); /* DQ = 1 */delay_us(30); /* 主机拉高20~40us */
}/** 功能： 等待DHT11的回应* 返回值：* 返回1:未检测到DHT11的存在* 返回0:存在*/
static unsigned char dht11_waitAck(void)
{ unsigned char retry = 0;dht11_set_inout(false); /* 配置为输入模式 */while(!DHT11_DQ_STATUS && retry < 100) {/* DHT11会拉低80us -- 通知主机传感器正常 */retry ++;delay_us(1);}if(retry >= 100) return 1;else retry = 0;while(DHT11_DQ_STATUS && retry < 100) {/* DHT11会拉高80us -- 通知主机准备接收数据 */retry ++;delay_us(1);}if(retry >= 100) return 1;return 0;
}/** 功能：从DHT11读取一个位* 返回值：* 1 读取数据为1* 0 读取数据为0*/
static unsigned char dht11_readBit(void)
{unsigned char retry = 0;dht11_set_inout(false);while(DHT11_DQ_STATUS && retry < 100) { /* 拉高延时准备输出 -- 等待变为低电平 */retry ++;delay_us(1);}retry = 0;while(!DHT11_DQ_STATUS && retry < 100) { /* 先拉低50us -- 等待变为高电平 */retry ++;delay_us(1);}delay_us(30); /* 用于判断高电平持续时间，即接收数据为1或0 */if(DHT11_DQ_STATUS) return 1;return 0;
}/** 功能：从DHT11读取一个字节* 返回值：读到的数据*/
static unsigned char dht11_readByte(void)
{unsigned char i,data=0;for(i=0;i<8;i++) {data <<= 1; data |= dht11_readBit();}return data;
}/*** @brief 初始化DHT11* @param 无* @retval 无*/
void dht11_init(void)
{dht11_struct_config();dht11_gpio_config();
}/*** @brief DHT11数据采集函数* @param 无* @retval 无* @note 函数执行的基准时间10us*/
void dht11_measure(void *priv)
{unsigned char i=0;unsigned char buf[5];dht11_start();if( !dht11_waitAck() ) {/* 读取数据 数据格式为 湿度整数 + 湿度小数 + 温度整数 + 温度小数 + 校验和（前四位之和） */for( i=0;i<5;i++)buf[i] = dht11_readByte();if((buf[0] + buf[1] + buf[2] + buf[3]) == buf[4]) { /* 校验接收到的数据是否正确 */dht11.humidity = buf[0] + buf[1] * 0.1f;dht11.temperature = buf[2] + buf[3] * 0.1f;}}
}/*** @brief 获取dht11采集的温度数据* @param 无* @retval 温度数据 0℃-50℃*/
float dht11_get_temperature(void)
{float temperature = dht11.temperature + dht11.temperature_offset;if(temperature > 50.f) { temperature = 50.f; }if(temperature < 0.f) { temperature = 0.f; }return (temperature);
}/*** @brief 获取dht11采集的湿度数据* @param 无* @retval 湿度数据 20%RH-90%RH*/
float dht11_get_humidity(void)
{float humidity = dht11.humidity + dht11.humidity_offset;if(humidity > 90.f) { humidity = 90.f; }if(humidity < 20.f) { humidity = 20.f; }return (humidity);
}/*** @brief 设置dht11的温度补偿值* @param offset - 补偿值* @retval 无*/
void dht11_set_temperature_offset(float offset)
{dht11.temperature_offset = offset;
}/*** @brief 设置dht11的湿度补偿值* @param offset - 补偿值* @retval 无*/
void dht11_set_humidity_offset(float offset)
{dht11.humidity_offset = offset;
}② dht11.h
#ifndef __DHT11_H
#define __DHT11_H#include "stm32f10x.h"typedef struct {float temperature; /* 获取的温度数据 范围:0~50℃ */float temperature_offset; /* 温度补偿值 */float humidity; /* 获取的湿度数据 范围:20%~90% */float humidity_offset; /* 湿度补偿值 */
} STRUCT_DHT11_TYPEDEF;/* ------------------------- DHT11操作函数 ------------------------- */
void dht11_init (void); /* 初始化DHT11 */
void dht11_measure (void *priv); /* 读取温湿度 */
float dht11_get_temperature (void); /* 获取dht11采集的温度数据 */
float dht11_get_humidity (void); /* 获取dht11采集的湿度数据 */
void dht11_set_temperature_offset(float offset); /* 设置dht11的温度补偿值 */
void dht11_set_humidity_offset (float offset); /* 设置dht11的湿度补偿值 */#endif③main.c
int main(void)
{dht11_init(); //温湿度传感器初始化while (1){ dht11_measure(NULL);//dht11wd = dht11_get_temperature();//获取温度sd = dht11_get_humidity(); //获取湿度OLED_ShowCHinese(0, 0, 9); //温OLED_ShowCHinese(18, 0, 10); //度 OLED_ShowString(36,0,":",16); //:OLED_ShowNum(48,0,wd,2,16);OLED_ShowCHinese(66, 0, 11); //℃ OLED_ShowCHinese(0, 3, 36); //湿OLED_ShowCHinese(18, 3, 10); //度 OLED_ShowString(36,3,":",16); //:OLED_ShowNum(48,3,sd,2,16);OLED_ShowString(70,3,"%",16); //% }
}实现结果如下所示：
2. rc522的使用
硬件：接线定义如下所示，5根线加上3.3v和gnd总共七根线，多出来的一个引脚可不接
软件：
①rc522.c
#include "rc522.h"
#include "delay.h"
#include "usart.h"
#include <string.h>
#include "oled.h"
#include "led.h"
#include "jq8400.h" // M1卡分为16个扇区，每个扇区由四个块（块0、块1、块2、块3）组成
// 将16个扇区的64个块按绝对地址编号为：0~63
// 第0个扇区的块0（即绝对地址0块），用于存放厂商代码，已经固化不可更改
// 每个扇区的块0、块1、块2为数据块，可用于存放数据
// 每个扇区的块3为控制块（绝对地址为:块3、块7、块11.....）包括密码A，存取控制、密码B等/*全局变量*/
unsigned char CT[2];//卡类型
unsigned char SN[4]; //卡号（低字节在前，高字节在后）
unsigned char RFID[16]; //存放RFID
unsigned char lxl_bit=0;
unsigned char card1_bit=0;
unsigned char card2_bit=0;
unsigned char card3_bit=0;
unsigned char card4_bit=0;
unsigned char total=0;
unsigned char lxl[4]={196,58,104,217};
unsigned char card_1[4]={83,106,11,1};
unsigned char card_2[4]={208,121,31,57};
unsigned char card_3[4]={176,177,143,165};
unsigned char card_4[4]={5,158,10,136};
u8 KEY[6]={0xff,0xff,0xff,0xff,0xff,0xff};
u8 AUDIO_OPEN[6] = {0xAA, 0x07, 0x02, 0x00, 0x09, 0xBC};
unsigned char RFID1[16]={0x00,0x00,0x00,0x00,0x00,0x00,0xff,0x07,0x80,0x29,0xff,0xff,0xff,0xff,0xff,0xff};
/*函数声明*/
unsigned char status;
unsigned char s=0x08;
unsigned char ShowON; #define RC522_DELAY() delay_us( 20 )//ID
char ss[255];
//char data[16];unsigned char snr, buf[16], TagType[2], SelectedSnr[4], DefaultKey[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
unsigned char buf1[16];
unsigned char buf2[16];
int a = 1200;
char OK_status;void RC522_Handel(void)
{ u8 num[9];u8 i;
// status = PcdRequest(PICC_REQALL,CT);//寻卡// printf("\r\nstatus>>>>>>%d\r\n", status);if(status==MI_OK)//寻卡成功{ //printf("\r\n寻卡成功\r\n");status=MI_ERR;status = PcdAnticoll(SN);//防冲撞//这里放你刷完卡想执行的命令 }}void RC522_Init ( void )
{SPI1_Init();RC522_Reset_Disable();RC522_CS_Disable();PcdReset ();M500PcdConfigISOType ( 'A' );//设置工作方式}void SPI1_Init(void)
{GPIO_InitTypeDef GPIO_InitStructure;RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE );//PORTB时钟使能 // CSGPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO口速度为50MHzGPIO_Init(GPIOA, &GPIO_InitStructure); //根据设定参数初始化PB12// SCKGPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO口速度为50MHzGPIO_Init(GPIOA, &GPIO_InitStructure);// MISOGPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //推挽输出GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO口速度为50MHzGPIO_Init(GPIOA, &GPIO_InitStructure);// MOSIGPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO口速度为50MHzGPIO_Init(GPIOA, &GPIO_InitStructure);// RSTGPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO口速度为50MHzGPIO_Init(GPIOA, &GPIO_InitStructure);}/** 函数名：SPI_RC522_SendByte* 描述 ：向RC522发送1 Byte 数据* 输入 ：byte，要发送的数据* 返回 : RC522返回的数据* 调用 ：内部调用*/
void SPI_RC522_SendByte ( u8 byte )
{u8 counter;for(counter=0;counter<8;counter++){ if ( byte & 0x80 )RC522_MOSI_1 ();else RC522_MOSI_0 ();// delay_us ( 3 );RC522_DELAY();RC522_SCK_0 ();// delay_us ( 1 );
// delay_us ( 3 );RC522_DELAY();RC522_SCK_1();// delay_us ( 3 );RC522_DELAY();byte <<= 1; } }/** 函数名：SPI_RC522_ReadByte* 描述 ：从RC522发送1 Byte 数据* 输入 ：无* 返回 : RC522返回的数据* 调用 ：内部调用*/
u8 SPI_RC522_ReadByte ( void )
{u8 counter;u8 SPI_Data;for(counter=0;counter<8;counter++){SPI_Data <<= 1;RC522_SCK_0 ();// delay_us ( 3 );RC522_DELAY();if ( RC522_MISO_GET() == 1)SPI_Data |= 0x01;// delay_us ( 2 );
// delay_us ( 3 );RC522_DELAY();RC522_SCK_1 ();// delay_us ( 3 );RC522_DELAY();}// printf("****%c****",SPI_Data);return SPI_Data;
}/** 函数名：ReadRawRC* 描述 ：读RC522寄存器* 输入 ：ucAddress，寄存器地址* 返回 : 寄存器的当前值* 调用 ：内部调用*/
u8 ReadRawRC ( u8 ucAddress )
{u8 ucAddr, ucReturn;ucAddr = ( ( ucAddress << 1 ) & 0x7E ) | 0x80;RC522_CS_Enable();SPI_RC522_SendByte ( ucAddr );ucReturn = SPI_RC522_ReadByte ();RC522_CS_Disable();return ucReturn;
}/** 函数名：WriteRawRC* 描述 ：写RC522寄存器* 输入 ：ucAddress，寄存器地址* ucValue，写入寄存器的值* 返回 : 无* 调用 ：内部调用*/
void WriteRawRC ( u8 ucAddress, u8 ucValue )
{ u8 ucAddr;ucAddr = ( ucAddress << 1 ) & 0x7E;RC522_CS_Enable();SPI_RC522_SendByte ( ucAddr );SPI_RC522_SendByte ( ucValue );RC522_CS_Disable();
}/** 函数名：SetBitMask* 描述 ：对RC522寄存器置位* 输入 ：ucReg，寄存器地址* ucMask，置位值* 返回 : 无* 调用 ：内部调用*/
void SetBitMask ( u8 ucReg, u8 ucMask )
{u8 ucTemp;ucTemp = ReadRawRC ( ucReg );WriteRawRC ( ucReg, ucTemp | ucMask ); // set bit mask}/** 函数名：ClearBitMask* 描述 ：对RC522寄存器清位* 输入 ：ucReg，寄存器地址* ucMask，清位值* 返回 : 无* 调用 ：内部调用*/
void ClearBitMask ( u8 ucReg, u8 ucMask )
{u8 ucTemp;ucTemp = ReadRawRC ( ucReg );WriteRawRC ( ucReg, ucTemp & ( ~ ucMask) ); // clear bit mask}/** 函数名：PcdAntennaOn* 描述 ：开启天线 * 输入 ：无* 返回 : 无* 调用 ：内部调用*/
void PcdAntennaOn ( void )
{u8 uc;uc = ReadRawRC ( TxControlReg );if ( ! ( uc & 0x03 ) )SetBitMask(TxControlReg, 0x03);}/** 函数名：PcdAntennaOff* 描述 ：开启天线 * 输入 ：无* 返回 : 无* 调用 ：内部调用*/
void PcdAntennaOff ( void )
{ClearBitMask ( TxControlReg, 0x03 );}/** 函数名：PcdRese* 描述 ：复位RC522 * 输入 ：无* 返回 : 无* 调用 ：外部调用*/
void PcdReset ( void )
{RC522_Reset_Disable();delay_us ( 1 );RC522_Reset_Enable();delay_us ( 1 );RC522_Reset_Disable();delay_us ( 1 );WriteRawRC ( CommandReg, 0x0f );while ( ReadRawRC ( CommandReg ) & 0x10 );delay_us ( 1 );WriteRawRC ( ModeReg, 0x3D ); //定义发送和接收常用模式 和Mifare卡通讯，CRC初始值0x6363WriteRawRC ( TReloadRegL, 30 ); //16位定时器低位 WriteRawRC ( TReloadRegH, 0 ); //16位定时器高位WriteRawRC ( TModeReg, 0x8D ); //定义内部定时器的设置WriteRawRC ( TPrescalerReg, 0x3E ); //设置定时器分频系数WriteRawRC ( TxAutoReg, 0x40 ); //调制发送信号为100%ASK }/** 函数名：M500PcdConfigISOType* 描述 ：设置RC522的工作方式* 输入 ：ucType，工作方式* 返回 : 无* 调用 ：外部调用*/
void M500PcdConfigISOType ( u8 ucType )
{if ( ucType == 'A') //ISO14443_A{ClearBitMask ( Status2Reg, 0x08 );WriteRawRC ( ModeReg, 0x3D ); //3FWriteRawRC ( RxSelReg, 0x86 ); //84WriteRawRC( RFCfgReg, 0x7F ); //4FWriteRawRC( TReloadRegL, 30 ); //tmoLengthWriteRawRC ( TReloadRegH, 0 ); //TReloadVal = 'h6a =tmoLength(dec) WriteRawRC ( TModeReg, 0x8D );WriteRawRC ( TPrescalerReg, 0x3E );delay_us ( 2 );PcdAntennaOn ( ); //开天线}}/** 函数名：PcdComMF522* 描述 ：通过RC522和ISO14443卡通讯* 输入 ：ucCommand，RC522命令字* pInData，通过RC522发送到卡片的数据* ucInLenByte，发送数据的字节长度* pOutData，接收到的卡片返回数据* pOutLenBit，返回数据的位长度* 返回 : 状态值* = MI_OK，成功* 调用 ：内部调用*/
char PcdComMF522 ( u8 ucCommand, u8 * pInData, u8 ucInLenByte, u8 * pOutData, u32 * pOutLenBit )
{char cStatus = MI_ERR;u8 ucIrqEn = 0x00;u8 ucWaitFor = 0x00;u8 ucLastBits;u8 ucN;u32 ul;switch ( ucCommand ){case PCD_AUTHENT: //Mifare认证ucIrqEn = 0x12; //允许错误中断请求ErrIEn 允许空闲中断IdleIEnucWaitFor = 0x10; //认证寻卡等待时候 查询空闲中断标志位break;case PCD_TRANSCEIVE: //接收发送 发送接收ucIrqEn = 0x77; //允许TxIEn RxIEn IdleIEn LoAlertIEn ErrIEn TimerIEnucWaitFor = 0x30; //寻卡等待时候 查询接收中断标志位与 空闲中断标志位break;default:break;}WriteRawRC ( ComIEnReg, ucIrqEn | 0x80 ); //IRqInv置位管脚IRQ与Status1Reg的IRq位的值相反 ClearBitMask ( ComIrqReg, 0x80 ); //Set1该位清零时，CommIRqReg的屏蔽位清零WriteRawRC ( CommandReg, PCD_IDLE ); //写空闲命令SetBitMask ( FIFOLevelReg, 0x80 ); //置位FlushBuffer清除内部FIFO的读和写指针以及ErrReg的BufferOvfl标志位被清除for ( ul = 0; ul < ucInLenByte; ul ++ )WriteRawRC ( FIFODataReg, pInData [ ul ] ); //写数据进FIFOdataWriteRawRC ( CommandReg, ucCommand ); //写命令if ( ucCommand == PCD_TRANSCEIVE )SetBitMask(BitFramingReg,0x80); //StartSend置位启动数据发送 该位与收发命令使用时才有效ul = 1000;//根据时钟频率调整，操作M1卡最大等待时间25msdo //认证 与寻卡等待时间 {ucN = ReadRawRC ( ComIrqReg ); //查询事件中断ul --;} while ( ( ul != 0 ) && ( ! ( ucN & 0x01 ) ) && ( ! ( ucN & ucWaitFor ) ) ); //退出条件i=0,定时器中断，与写空闲命令ClearBitMask ( BitFramingReg, 0x80 ); //清理允许StartSend位if ( ul != 0 ){if ( ! (( ReadRawRC ( ErrorReg ) & 0x1B )) ) //读错误标志寄存器BufferOfI CollErr ParityErr ProtocolErr{cStatus = MI_OK;if ( ucN & ucIrqEn & 0x01 ) //是否发生定时器中断cStatus = MI_NOTAGERR; if ( ucCommand == PCD_TRANSCEIVE ){ucN = ReadRawRC ( FIFOLevelReg ); //读FIFO中保存的字节数ucLastBits = ReadRawRC ( ControlReg ) & 0x07; //最后接收到得字节的有效位数if ( ucLastBits )* pOutLenBit = ( ucN - 1 ) * 8 + ucLastBits; //N个字节数减去1（最后一个字节）+最后一位的位数 读取到的数据总位数else* pOutLenBit = ucN * 8; //最后接收到的字节整个字节有效if ( ucN == 0 ) ucN = 1; if ( ucN > MAXRLEN )ucN = MAXRLEN; for ( ul = 0; ul < ucN; ul ++ )pOutData [ ul ] = ReadRawRC ( FIFODataReg ); } }elsecStatus = MI_ERR;
// printf(ErrorReg);}SetBitMask ( ControlReg, 0x80 ); // stop timer nowWriteRawRC ( CommandReg, PCD_IDLE ); return cStatus;}/** 函数名：PcdRequest* 描述 ：寻卡* 输入 ：ucReq_code，寻卡方式* = 0x52，寻感应区内所有符合14443A标准的卡* = 0x26，寻未进入休眠状态的卡* pTagType，卡片类型代码* = 0x4400，Mifare_UltraLight* = 0x0400，Mifare_One(S50)* = 0x0200，Mifare_One(S70)* = 0x0800，Mifare_Pro(X))* = 0x4403，Mifare_DESFire* 返回 : 状态值* = MI_OK，成功* 调用 ：外部调用*/
char PcdRequest ( u8 ucReq_code, u8 * pTagType )
{char cStatus; u8 ucComMF522Buf [ MAXRLEN ]; u32 ulLen;ClearBitMask ( Status2Reg, 0x08 ); //清理指示MIFARECyptol单元接通以及所有卡的数据通信被加密的情况WriteRawRC ( BitFramingReg, 0x07 ); // 发送的最后一个字节的 七位SetBitMask ( TxControlReg, 0x03 ); //TX1,TX2管脚的输出信号传递经发送调制的13.56的能量载波信号ucComMF522Buf [ 0 ] = ucReq_code; //存入 卡片命令字cStatus = PcdComMF522 ( PCD_TRANSCEIVE, ucComMF522Buf, 1, ucComMF522Buf, & ulLen ); //寻卡 if ( ( cStatus == MI_OK ) && ( ulLen == 0x10 ) ) //寻卡成功返回卡类型 { * pTagType = ucComMF522Buf [ 0 ];* ( pTagType + 1 ) = ucComMF522Buf [ 1 ];}elsecStatus = MI_ERR;return cStatus;}/** 函数名：PcdAnticoll* 描述 ：防冲撞* 输入 ：pSnr，卡片序列号，4字节* 返回 : 状态值* = MI_OK，成功* 调用 ：外部调用*/
char PcdAnticoll ( u8 * pSnr )
{char cStatus;u8 uc, ucSnr_check = 0;u8 ucComMF522Buf [ MAXRLEN ]; u32 ulLen;ClearBitMask ( Status2Reg, 0x08 ); //清MFCryptol On位 只有成功执行MFAuthent命令后，该位才能置位WriteRawRC ( BitFramingReg, 0x00); //清理寄存器 停止收发ClearBitMask ( CollReg, 0x80 ); //清ValuesAfterColl所有接收的位在冲突后被清除ucComMF522Buf [ 0 ] = 0x93; //卡片防冲突命令ucComMF522Buf [ 1 ] = 0x20;cStatus = PcdComMF522 ( PCD_TRANSCEIVE, ucComMF522Buf, 2, ucComMF522Buf, & ulLen);//与卡片通信if ( cStatus == MI_OK) //通信成功{for ( uc = 0; uc < 4; uc ++ ){* ( pSnr + uc ) = ucComMF522Buf [ uc ]; //读出UIDucSnr_check ^= ucComMF522Buf [ uc ];}if ( ucSnr_check != ucComMF522Buf [ uc ] )cStatus = MI_ERR; }SetBitMask ( CollReg, 0x80 );return cStatus;}/** 函数名：CalulateCRC* 描述 ：用RC522计算CRC16* 输入 ：pIndata，计算CRC16的数组* ucLen，计算CRC16的数组字节长度* pOutData，存放计算结果存放的首地址* 返回 : 无* 调用 ：内部调用*/
void CalulateCRC ( u8 * pIndata, u8 ucLen, u8 * pOutData )
{u8 uc, ucN;ClearBitMask(DivIrqReg,0x04);WriteRawRC(CommandReg,PCD_IDLE);SetBitMask(FIFOLevelReg,0x80);for ( uc = 0; uc < ucLen; uc ++)WriteRawRC ( FIFODataReg, * ( pIndata + uc ) ); WriteRawRC ( CommandReg, PCD_CALCCRC );uc = 0xFF;do {ucN = ReadRawRC ( DivIrqReg );uc --;} while ( ( uc != 0 ) && ! ( ucN & 0x04 ) );pOutData [ 0 ] = ReadRawRC ( CRCResultRegL );pOutData [ 1 ] = ReadRawRC ( CRCResultRegM );}/** 函数名：PcdSelect* 描述 ：选定卡片* 输入 ：pSnr，卡片序列号，4字节* 返回 : 状态值* = MI_OK，成功* 调用 ：外部调用*/
char PcdSelect ( u8 * pSnr )
{char ucN;u8 uc;u8 ucComMF522Buf [ MAXRLEN ]; u32 ulLen;ucComMF522Buf [ 0 ] = PICC_ANTICOLL1;ucComMF522Buf [ 1 ] = 0x70;ucComMF522Buf [ 6 ] = 0;for ( uc = 0; uc < 4; uc ++ ){ucComMF522Buf [ uc + 2 ] = * ( pSnr + uc );ucComMF522Buf [ 6 ] ^= * ( pSnr + uc );}CalulateCRC ( ucComMF522Buf, 7, & ucComMF522Buf [ 7 ] );ClearBitMask ( Status2Reg, 0x08 );ucN = PcdComMF522 ( PCD_TRANSCEIVE, ucComMF522Buf, 9, ucComMF522Buf, & ulLen );if ( ( ucN == MI_OK ) && ( ulLen == 0x18 ) )ucN = MI_OK; elseucN = MI_ERR; return ucN;}/** 函数名：PcdAuthState* 描述 ：验证卡片密码* 输入 ：ucAuth_mode，密码验证模式* = 0x60，验证A密钥* = 0x61，验证B密钥* u8 ucAddr，块地址* pKey，密码* pSnr，卡片序列号，4字节* 返回 : 状态值* = MI_OK，成功* 调用 ：外部调用*/
char PcdAuthState ( u8 ucAuth_mode, u8 ucAddr, u8 * pKey, u8 * pSnr )
{char cStatus;u8 uc, ucComMF522Buf [ MAXRLEN ];u32 ulLen;ucComMF522Buf [ 0 ] = ucAuth_mode;ucComMF522Buf [ 1 ] = ucAddr;for ( uc = 0; uc < 6; uc ++ )ucComMF522Buf [ uc + 2 ] = * ( pKey + uc ); for ( uc = 0; uc < 6; uc ++ )ucComMF522Buf [ uc + 8 ] = * ( pSnr + uc ); cStatus = PcdComMF522 ( PCD_AUTHENT, ucComMF522Buf, 12, ucComMF522Buf, & ulLen );if ( ( cStatus != MI_OK ) || ( ! ( ReadRawRC ( Status2Reg ) & 0x08 ) ) ){
// if(cStatus != MI_OK)
// printf("666") ;
// else
// printf("888");cStatus = MI_ERR; }return cStatus;}/** 函数名：PcdWrite* 描述 ：写数据到M1卡一块* 输入 ：u8 ucAddr，块地址* pData，写入的数据，16字节* 返回 : 状态值* = MI_OK，成功* 调用 ：外部调用*/
char PcdWrite ( u8 ucAddr, u8 * pData )
{char cStatus;u8 uc, ucComMF522Buf [ MAXRLEN ];u32 ulLen;ucComMF522Buf [ 0 ] = PICC_WRITE;ucComMF522Buf [ 1 ] = ucAddr;CalulateCRC ( ucComMF522Buf, 2, & ucComMF522Buf [ 2 ] );cStatus = PcdComMF522 ( PCD_TRANSCEIVE, ucComMF522Buf, 4, ucComMF522Buf, & ulLen );if ( ( cStatus != MI_OK ) || ( ulLen != 4 ) || ( ( ucComMF522Buf [ 0 ] & 0x0F ) != 0x0A ) )cStatus = MI_ERR; if ( cStatus == MI_OK ){memcpy(ucComMF522Buf, pData, 16);for ( uc = 0; uc < 16; uc ++ )ucComMF522Buf [ uc ] = * ( pData + uc ); CalulateCRC ( ucComMF522Buf, 16, & ucComMF522Buf [ 16 ] );cStatus = PcdComMF522 ( PCD_TRANSCEIVE, ucComMF522Buf, 18, ucComMF522Buf, & ulLen );if ( ( cStatus != MI_OK ) || ( ulLen != 4 ) || ( ( ucComMF522Buf [ 0 ] & 0x0F ) != 0x0A ) )cStatus = MI_ERR; } return cStatus;}/** 函数名：PcdRead* 描述 ：读取M1卡一块数据* 输入 ：u8 ucAddr，块地址* pData，读出的数据，16字节* 返回 : 状态值* = MI_OK，成功* 调用 ：外部调用*/
char PcdRead ( u8 ucAddr, u8 * pData )
{char cStatus;u8 uc, ucComMF522Buf [ MAXRLEN ]; u32 ulLen;ucComMF522Buf [ 0 ] = PICC_READ;ucComMF522Buf [ 1 ] = ucAddr;CalulateCRC ( ucComMF522Buf, 2, & ucComMF522Buf [ 2 ] );cStatus = PcdComMF522 ( PCD_TRANSCEIVE, ucComMF522Buf, 4, ucComMF522Buf, & ulLen );if ( ( cStatus == MI_OK ) && ( ulLen == 0x90 ) ){for ( uc = 0; uc < 16; uc ++ )* ( pData + uc ) = ucComMF522Buf [ uc ]; }elsecStatus = MI_ERR; return cStatus;}/** 函数名：PcdHalt* 描述 ：命令卡片进入休眠状态* 输入 ：无* 返回 : 状态值* = MI_OK，成功* 调用 ：外部调用*/
char PcdHalt( void )
{u8 ucComMF522Buf [ MAXRLEN ]; u32 ulLen;ucComMF522Buf [ 0 ] = PICC_HALT;ucComMF522Buf [ 1 ] = 0;CalulateCRC ( ucComMF522Buf, 2, & ucComMF522Buf [ 2 ] );PcdComMF522 ( PCD_TRANSCEIVE, ucComMF522Buf, 4, ucComMF522Buf, & ulLen );return MI_OK;}void IC_CMT ( u8 * UID, u8 * KEY, u8 RW, u8 * Dat )
{u8 ucArray_ID [ 4 ] = { 0 };//先后存放IC卡的类型和UID(IC卡序列号)PcdRequest ( 0x52, ucArray_ID );//寻卡PcdAnticoll ( ucArray_ID );//防冲撞PcdSelect ( UID );//选定卡PcdAuthState ( 0x60, 0x10, KEY, UID );//校验if ( RW )//读写选择，1是读，0是写PcdRead ( 0x10, Dat );else PcdWrite ( 0x10, Dat );PcdHalt (); }void ShowID(u8 *p) //显示卡的卡号，以十六进制显示
{u8 num[9];u8 i;for(i=0;i<4;i++){num[i*2]=p[i]/16;num[i*2]>9?(num[i*2]+='7'):(num[i*2]+='0');num[i*2+1]=p[i]%16;num[i*2+1]>9?(num[i*2+1]+='7'):(num[i*2+1]+='0');}num[8]=0;for(i =0;i<10;i++){SN[i] = num[i];}sprintf(ss,"%s",SN);OLED_ShowString(0,0,"ID:",16); //oled显示OLED_ShowString(18,0,(u8*)ss,16); //oled显示GPIO_ResetBits(GPIOA, GPIO_Pin_11);delay_ms(5000);OLED_Clear();GPIO_SetBits(GPIOA,GPIO_Pin_11);if(strcmp(SN,"F3355E0D") == 0){//LED0 = 0;delay_ms(500);//LED0=1;}else {//OLED_ShowString(0,3,"error",16); //oled显示}printf("ID>>>%s\r\n", num);}②rc522.h
#ifndef __RC522_H
#define __RC522_H
#include "stm32f10x.h"//MF522命令字#define PCD_IDLE 0x00 //取消当前命令
#define PCD_AUTHENT 0x0E //验证密钥
#define PCD_RECEIVE 0x08 //接收数据
#define PCD_TRANSMIT 0x04 //发送数据
#define PCD_TRANSCEIVE 0x0C //发送并接收数据
#define PCD_RESETPHASE 0x0F //复位
#define PCD_CALCCRC 0x03 //CRC计算//Mifare_One卡片命令字#define PICC_REQIDL 0x26 //寻天线区内未进入休眠状态
#define PICC_REQALL 0x52 //寻天线区内全部卡
#define PICC_ANTICOLL1 0x93 //防冲撞
#define PICC_ANTICOLL2 0x95 //防冲撞
#define PICC_AUTHENT1A 0x60 //验证A密钥
#define PICC_AUTHENT1B 0x61 //验证B密钥
#define PICC_READ 0x30 //读块
#define PICC_WRITE 0xA0 //写块
#define PICC_DECREMENT 0xC0 //扣款
#define PICC_INCREMENT 0xC1 //充值
#define PICC_RESTORE 0xC2 //调块数据到缓冲区
#define PICC_TRANSFER 0xB0 //保存缓冲区中数据
#define PICC_HALT 0x50 //休眠//MF522 FIFO长度定义#define DEF_FIFO_LENGTH 64 //FIFO size=64byte
#define MAXRLEN 18//MF522寄存器定义// PAGE 0
#define RFU00 0x00
#define CommandReg 0x01
#define ComIEnReg 0x02
#define DivlEnReg 0x03
#define ComIrqReg 0x04
#define DivIrqReg 0x05
#define ErrorReg 0x06
#define Status1Reg 0x07
#define Status2Reg 0x08
#define FIFODataReg 0x09
#define FIFOLevelReg 0x0A
#define WaterLevelReg 0x0B
#define ControlReg 0x0C
#define BitFramingReg 0x0D
#define CollReg 0x0E
#define RFU0F 0x0F
// PAGE 1
#define RFU10 0x10
#define ModeReg 0x11
#define TxModeReg 0x12
#define RxModeReg 0x13
#define TxControlReg 0x14
#define TxAutoReg 0x15
#define TxSelReg 0x16
#define RxSelReg 0x17
#define RxThresholdReg 0x18
#define DemodReg 0x19
#define RFU1A 0x1A
#define RFU1B 0x1B
#define MifareReg 0x1C
#define RFU1D 0x1D
#define RFU1E 0x1E
#define SerialSpeedReg 0x1F
// PAGE 2
#define RFU20 0x20
#define CRCResultRegM 0x21
#define CRCResultRegL 0x22
#define RFU23 0x23
#define ModWidthReg 0x24
#define RFU25 0x25
#define RFCfgReg 0x26
#define GsNReg 0x27
#define CWGsCfgReg 0x28
#define ModGsCfgReg 0x29
#define TModeReg 0x2A
#define TPrescalerReg 0x2B
#define TReloadRegH 0x2C
#define TReloadRegL 0x2D
#define TCounterValueRegH 0x2E
#define TCounterValueRegL 0x2F
// PAGE 3
#define RFU30 0x30
#define TestSel1Reg 0x31
#define TestSel2Reg 0x32
#define TestPinEnReg 0x33
#define TestPinValueReg 0x34
#define TestBusReg 0x35
#define AutoTestReg 0x36
#define VersionReg 0x37
#define AnalogTestReg 0x38
#define TestDAC1Reg 0x39
#define TestDAC2Reg 0x3A
#define TestADCReg 0x3B
#define RFU3C 0x3C
#define RFU3D 0x3D
#define RFU3E 0x3E
#define RFU3F 0x3F//和MF522通讯时返回的错误代码#define MI_OK 0
#define MI_NOTAGERR (1)
#define MI_ERR (2)#define SHAQU1 0X01
#define KUAI4 0X04
#define KUAI7 0X07
#define REGCARD 0xa1
#define CONSUME 0xa2
#define READCARD 0xa3
#define ADDMONEY 0xa4#define SPIReadByte() SPIWriteByte(0)
u8 SPIWriteByte(u8 byte);
void SPI1_Init(void);#define SET_SPI_CS (GPIOF->BSRR=0X01)
#define CLR_SPI_CS (GPIOF->BRR=0X01)#define SET_RC522RST GPIOF->BSRR=0X02
#define CLR_RC522RST GPIOF->BRR=0X02/***********************RC522 函数宏定义**********************/
#define RC522_CS_Enable() GPIO_ResetBits ( GPIOA, GPIO_Pin_4 )//A4
#define RC522_CS_Disable() GPIO_SetBits ( GPIOA, GPIO_Pin_4 )#define RC522_Reset_Enable() GPIO_ResetBits( GPIOA, GPIO_Pin_8 )//A8
#define RC522_Reset_Disable() GPIO_SetBits ( GPIOA, GPIO_Pin_8 )#define RC522_SCK_0() GPIO_ResetBits( GPIOA, GPIO_Pin_5 )//A5
#define RC522_SCK_1() GPIO_SetBits ( GPIOA, GPIO_Pin_5 )#define RC522_MOSI_0() GPIO_ResetBits( GPIOA, GPIO_Pin_7 )//A7
#define RC522_MOSI_1() GPIO_SetBits ( GPIOA, GPIO_Pin_7 )#define RC522_MISO_GET() GPIO_ReadInputDataBit ( GPIOA, GPIO_Pin_6 )//A6void RC522_Handel (void);
void RC522_Init ( void ); //初始化
void PcdReset ( void ); //复位
void M500PcdConfigISOType ( u8 type ); //工作方式
char PcdRequest ( u8 req_code, u8 * pTagType ); //寻卡
char PcdAnticoll ( u8 * pSnr); //读卡号char PcdSelect ( u8 * pSnr );
char PcdAuthState ( u8 ucAuth_mode, u8 ucAddr, u8 * pKey, u8 * pSnr );
char PcdWrite ( u8 ucAddr, u8 * pData );
char PcdRead ( u8 ucAddr, u8 * pData );//void ShowID(u16 x,u16 y, u8 *p, u16 charColor, u16 bkColor); //显示卡的卡号，以十六进制显示
void ShowID(u8 *p); //显示卡的卡号，以十六进制显示extern unsigned char buf1[16];
extern unsigned char buf2[16]; #endif③main.c
int main(void)
{RC522_Init(); //RFID初始化while (1){ RC522_Handel(); }
} 实现效果：刷一下卡，下面的两个led就亮一会
3.jq8400 的使用
硬件：tx接串口rx，rx接串口tx，5v，gnd，以及接喇叭的正负极，只有接喇叭才能发出语言，我用的是自带flash的jq8400，需要用usb线接电脑，把语言文件存进去，然后才能播放，该模块有专门的上位机以及语言合成软件等资料（上位机用通过tx，rx通过usb转ttl接电脑，usb数据线不行），需要该模块资料的话评论区说一下，该模块最好5v供电，3.3v会有杂音。
软件：
①jq8400.c
#include "jq8400.h"
#include "usart.h"
#include "usart3.h"/** @noBug 播放音乐*/
void playMusic(int i)
{switch(i){//在任何时候发此命令都会从头开始播放当前曲目case 1: uart3_send_byte(0xAA);uart3_send_byte(0x02);uart3_send_byte(0x00);uart3_send_byte(0xAC);break;//暂停case 2: uart3_send_byte(0xAA);uart3_send_byte(0x03);uart3_send_byte(0x00);uart3_send_byte(0xAD);break;//下一曲case 3: uart3_send_byte(0xAA);uart3_send_byte(0x06);uart3_send_byte(0x00);uart3_send_byte(0xB0);break;//上一曲case 4: uart3_send_byte(0xAA);uart3_send_byte(0x05);uart3_send_byte(0x00);uart3_send_byte(0xAF);break;//音量5：0xAA, 0x13, 0x01, 0x05, 0xC3 //音量10：0xAA, 0x13, 0x01, 0x0A, 0xC8 //音量15：0xAA, 0x13, 0x01, 0x0F, 0xCD//音量20：0xAA, 0x13, 0x01, 0x14, 0xD2 //音量25：0xAA, 0x13, 0x01, 0x19, 0xD7 //音量30：0xAA, 0x13, 0x01, 0x1E, 0xDCcase 5: uart3_send_byte(0xAA);uart3_send_byte(0x13);uart3_send_byte(0x01);uart3_send_byte(0x0F);uart3_send_byte(0xCD);break;//结束播放case 6:uart3_send_byte(0xAA);uart3_send_byte(0x10);uart3_send_byte(0x00);uart3_send_byte(0xBA); break;default:uart3_send_str((u8 *)"the order does not exist!\r\n");break;}
}
②jq8400.h
#ifndef __JQ8400_H
#define __JQ8400_H#include "stm32f10x.h"
#define USART_REC_LEN 200 //定义最大接收字节数 200
#define EN_USART1_RX 1 //使能（1）/禁止（0）串口1接收extern u8 USART_RX_BUF[USART_REC_LEN]; //接收缓冲,最大USART_REC_LEN个字节.末字节为换行符
extern u16 USART_RX_STA; //接收状态标记
//如果想串口中断接收，请不要注释以下宏定义
void uart_init(u32 bound);
void playMusic(int i);
#endif /* __JQ8400_H */
③main.c
int main(void)
{usart3_init(9600); //串口3初始化为9600，jq8400使用while (1){ playMusic(1); //语言播报delay_ms(150); playMusic(5); //设置音量delay_ms(1500); }
}该模块就不进行演示了，想要完整源码的请一键三连后私聊获取！！！
