avr单片机无线收发模块控制doc.doc

NRF24l01的与AVR的无线通信代码（接收端）（转载）默认分类 2009-10-08 15:18:06 阅读241 评论0 字号：大中小 /*nRF24L01无线模块的头文件，包含各种操作函数*/*copyright (c) Liu.D.F RoboGmae2008.USTC*author:,a member of team Blademaster*/#ifndef _NRF_H#define _NRF_H#include funcs.h/selfDefine in 0820/以下定义是为了定义地址/#define TX_ADDRESS adress/#define RX_ADDRESS adress/unsigned char adress5=0xB3,0xB3,0xB3,0xB3,0xB3;#define TX_ADR_WIDTH 5#define RX_ADR_WIDTH 5/以下定义是为了切换频道 #define D3_P (PIND&0x08)=0)#define A4_P (PINA&0x10)=0)#define CH 7+D3_P+A4_P*2/ SPI(nRF24L01) 命令定义#define READ_REG 0x00 / 定义读寄存器命令#define WRITE_REG 0x20 / 定义写寄存器命令#define RD_RX_PLOAD 0x61 / 定义接收有效载荷寄存器#define WR_TX_PLOAD 0xA0 / 定义发送有效载荷寄存器#define FLUSH_TX 0xE1 / 定义清除发送寄存器命令#define FLUSH_RX 0xE2 / 定义清除接收寄存器命令#define REUSE_TX_PL 0xE3 / 定义复用发送有效载荷寄存器命令#define NOP1 0xFF / 定义空操作，用于读取状态寄存器/ SPI(nRF24L01) registers(addresses) #define CONFIG 0x00 / “配置寄存器”地址#define EN_AA 0x01 / “使能自动应答寄存器”地址#define EN_RXADDR 0x02 / “使能接收地址寄存器”地址#define SETUP_AW 0x03 / “设置地址长度寄存器”地址#define SETUP_RETR 0x04 / “设置自动重发寄存器”地址#define RF_CH 0x05 / “RF（射频）频道寄存器”地址#define RF_SETUP 0x06 / “RF（射频）设置寄存器”地址#define STATUS 0x07 / “状态寄存器”地址#define OBSERVE_TX 0x08 / “？寄存器”地址#define CD 0x09 / “发现载波寄存器”地址#define RX_ADDR_P0 0x0A / “通道0接收寄存器”地址#define RX_ADDR_P1 0x0B / 通道1接收寄存器地址#define RX_ADDR_P2 0x0C / 通道2接收寄存器地址#define RX_ADDR_P3 0x0D / 通道3接收寄存器地址#define RX_ADDR_P4 0x0E / 通道4接收寄存器地址#define RX_ADDR_P5 0x0F / 通道5接收寄存器地址#define TX_ADDR 0x10 / ”发送寄存器“地址#define RX_PW_P0 0x11 / ”通道0有效载荷（数据）长度寄存器“地址#define RX_PW_P1 0x12 / ”通道1有效载荷长度寄存器“地址#define RX_PW_P2 0x13 / ”通道2有效载荷长度寄存器“地址#define RX_PW_P3 0x14 / ”通道3有效载荷长度寄存器“地址#define RX_PW_P4 0x15 / ”通道4有效载荷长度寄存器“地址#define RX_PW_P5 0x16 / ”通道5有效载荷长度寄存器“地址#define FIFO_STATUS 0x17 / “FIFO状态寄存器的寄存器”地址/*function declaration*/ unsigned char SPI_Read_Reg(unsigned char reg_addr); /通过SPI读寄存器函数unsigned char SPI_Write_Reg(unsigned char reg_addr,unsigned char reg_val);/通过SPI写寄存器函数 unsigned char SPI_Write_Command(unsigned char Command); /通过SPI写命令函数void SPI_Read_Buf(unsigned char reg, unsigned char *pBuf, unsigned char bytes);/通过SPI读缓冲区的函数 void SPI_Write_Buf(unsigned char reg, unsigned char *pBuf, unsigned char bytes); /通过SPI写缓冲区函数void PTX_Config(void); /PTX（发送模式）设置函数void ConfigChk(void); /设置CHK的函数void ConfigChkAll(void);void PRX_Config(void); /PRX（接收模式）设置函数/*/ /SPI_Read_Reg();SPI_Write_Reg();SPI_Write_Command(); /SPI_Read_Buf();SPI_Write_Buf(); /*/*SPI_Read_Reg*/ unsigned char SPI_Read_Reg(unsigned char reg_addr) unsigned char reg_val; CSN_0; SPI_MasterTransmit(reg_addr); / 先写入地址 reg_val = SPI_MasterReceive(0x00); /再读出数据 CSN_1; return(reg_val); / /*SPI_Write_Reg*/ unsigned char SPI_Write_Reg(unsigned char reg_addr,unsigned char reg_val) unsigned char status;CSN_0; status=SPI_MasterTransmit(reg_addr); / 选择寄存器SPI_MasterTransmit(reg_val); / 往里写数据CSN_1; return(status); / 返回状态/*SPI_Write_Command()*/ unsigned char SPI_Write_Command(unsigned char Command) unsigned char status; CSN_0; status = SPI_MasterTransmit(Command); /写命令CSN_1; return(status); / 返回状态 /*SPI_Read_Buf*/ void SPI_Read_Buf(unsigned char reg, unsigned char *pBuf, unsigned char bytes) unsigned char byte_ctr;SPI_MasterTransmit(reg); for(byte_ctr=0;byte_ctrbytes;byte_ctr+) pBufbyte_ctr = SPI_MasterReceive(0x00); /*SPI_Write_Buf*/ void SPI_Write_Buf(unsigned char reg, unsigned char *pBuf, unsigned char bytes) unsigned char byte_ctr;SPI_MasterTransmit(reg); for(byte_ctr=0; byte_ctrbytes; byte_ctr+) SPI_MasterTransmit(*pBuf+); void PTX_Config() CE_0; SPI_Write_Command(FLUSH_TX);/清空发射寄存器 /SPI_Write_Buf(WRITE_REG+TX_ADDR,TX_ADDRESS,TX_ADR_WIDTH);/发送端地址 SPI_Write_Reg(WRITE_REG+SETUP_RETR,0x00);/禁用重发 SPI_Write_Reg(WRITE_REG+EN_AA,0x00);/通道05自动应答-低05位 SPI_Write_Reg(WRITE_REG+RF_CH,CH);/设置频率2.4+0.（RF_CH）GHZ SPI_Write_Reg(WRITE_REG+RF_SETUP,0x07);/0x03,1M速率最大功率 SPI_Write_Reg(WRITE_REG+CONFIG,0x5A);/发送空闲模式一 CE_1; void PRX_Config()CE_0;/SPI_Write_Buf(WRITE_REG+RX_ADDR_P0,TX_ADDRESS,TX_ADR_WIDTH);/接收地址SPI_Write_Command(FLUSH_RX); SPI_Write_Reg(WRITE_REG+RX_PW_P0,TX_PLOAD_WIDTH);/接收SPI_Write_Reg(WRITE_REG+EN_AA,0x00);/通道05自动应答-低05位SPI_Write_Reg(WRITE_REG+EN_RXADDR,0x01);/数据通道05使能-低05位SPI_Write_Reg(WRITE_REG+RF_CH,CH);/设置频率2.4+0.（RF_CH）GHZ SPI_Write_Reg(WRITE_REG+RF_SETUP,0x07);/ox03,1M速率最大功率SPI_Write_Reg(WRITE_REG+CONFIG,0x3B);/接收空闲模式一CE_1;/检查关键寄存器设置void ConfigChk(void) unsigned char reg_val; reg_val=SPI_Read_Reg(CONFIG); while(!(UCSRA&(1UDRE);UDR=reg_val;reg_val=SPI_Read_Reg(EN_AA); while(!(UCSRA&(1UDRE);UDR=reg_val;reg_val=SPI_Read_Reg(EN_RXADDR);while(!(UCSRA&(1UDRE);UDR=reg_val;reg_val=SPI_Read_Reg(RX_PW_P0); while(!(UCSRA&(1UDRE);UDR=reg_val;/检查所有寄存器（24个）设置void ConfigChkAll(void)unsigned char i=0,reg_val=0;for(i=0;i24;i+) reg_val=SPI_Read_Reg(i); while(!(UCSRA&(1UDRE);UDR=reg_val; /*RF_Transmit*/void RF_Transmit(unsigned char *TxDataBuf) unsigned char temp,i; SPI_Write_Command(FLUSH_TX);CSN_0; SPI_MasterTransmit(WR_TX_PLOAD); for(i=0;iTX_PLOAD_WIDTH;i+) SPI_MasterTransmit(TxDataBufi);CSN_1; CE_1; /使能发送 Delayus(20); /CE_0; /返回空闲模式一 Delayus(180);/*RF_Receive()*/ void RF_Receive(unsigned char *RxDataBuf) unsigned char temp,i; CSN_0; SPI_MasterTransmit(R