nrf24l01 AVR 发射和接收调试成功.docx

1、nrf24l01 AVR 发射和接收调试成功注明：本发射程序带SC12A触摸按键程序，不要可以去掉，不去也行。 接收程序带液晶1602程序。 实现功能发射端按键后控制接收端两个LED灯亮灭。其它功能可根据爱好自己添加。 本程序编译软件IAR。运行平台为ATmega16。晶振频率为8MHZ，其他频率也可以，但是要修改延时函数void inerDelay_us(uchar n),使其延时时间不变，不然运行不成功（切记，经验教训啊！）发射程序：nrf24l01.htypedef unsigned char uchar;typedef unsigned int uint;/*NRF24L01端口定义*

2、#define CE PORTA_Bit0#define CSN PORTA_Bit1#define SCK PORTA_Bit2#define MOSI PORTA_Bit3#define Read_MISO PINA&(14)#define Read_IRQ PINA&(15)/*NRF24L01*#define TX_ADR_WIDTH 5 / 5 uints TX address width#define RX_ADR_WIDTH 5 / 5 uints RX address width#define TX_PLOAD_WIDTH 20 / 20 uints TX payload#de

3、fine RX_PLOAD_WIDTH 20 / 20 uints TX payloaduchar TX_ADDRESSTX_ADR_WIDTH= 0x34,0x43,0x10,0x10,0x01; /本地地址uchar RX_ADDRESSRX_ADR_WIDTH= 0x34,0x43,0x10,0x10,0x01; /接收地址/*NRF24L01寄存器指令*#define READ_REG 0x00 / 读寄存器指令#define WRITE_REG 0x20 / 写寄存器指令#define RD_RX_PLOAD 0x61 / 读取接收数据指令#define WR_TX_PLOAD 0x

4、A0 / 写待发数据指令#define FLUSH_TX 0xE1 / 冲洗发送 FIFO指令#define FLUSH_RX 0xE2 / 冲洗接收 FIFO指令#define REUSE_TX_PL 0xE3 / 定义重复装载数据指令#define NOP 0xFF / 保留/*SPI(nRF24L01)寄存器地址*#define CONFIG 0x00 / 配置收发状态，CRC校验模式以及收发状态响应方式#define EN_AA 0x01 / 自动应答功能设置#define EN_RXADDR 0x02 / 可用信道设置#define SETUP_AW 0x03 / 收发地址宽度设置#

5、define SETUP_RETR 0x04 / 自动重发功能设置#define RF_CH 0x05 / 工作频率设置#define RF_SETUP 0x06 / 发射速率、功耗功能设置#define STATUS 0x07 / 状态寄存器#define OBSERVE_TX 0x08 / 发送监测功能#define CD 0x09 / 地址检测 #define RX_ADDR_P0 0x0A / 频道0接收数据地址#define RX_ADDR_P1 0x0B / 频道1接收数据地址#define RX_ADDR_P2 0x0C / 频道2接收数据地址#define RX_ADDR_P3

6、 0x0D / 频道3接收数据地址#define RX_ADDR_P4 0x0E / 频道4接收数据地址#define RX_ADDR_P5 0x0F / 频道5接收数据地址#define TX_ADDR 0x10 / 发送地址寄存器#define RX_PW_P0 0x11 / 接收频道0接收数据长度#define RX_PW_P1 0x12 / 接收频道0接收数据长度#define RX_PW_P2 0x13 / 接收频道0接收数据长度#define RX_PW_P3 0x14 / 接收频道0接收数据长度#define RX_PW_P4 0x15 / 接收频道0接收数据长度#define

7、RX_PW_P5 0x16 / 接收频道0接收数据长度#define FIFO_STATUS 0x17 / FIFO栈入栈出状态寄存器设置/*void Delay(unsigned int s);void inerDelay_us(unsigned char n);void init_NRF24L01(void);uint SPI_RW(uint uchar);uchar SPI_Read(uchar reg);void SetRX_Mode(void);uint SPI_RW_Reg(uchar reg, uchar value);uint SPI_Read_Buf(uchar reg, u

8、char *pBuf, uchar uchars);uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars);unsigned char nRF24L01_RxPacket(unsigned char* rx_buf);void nRF24L01_TxPacket(unsigned char * tx_buf);void Port_init_nRF24L01(void);/*长延时*void Delay(uint s) uint i; for(i=0; is; i+); for(i=0; is; i+);/*uchar sta; /状态标

9、志#define RX_DR sta&(16)#define TX_DS sta&(15)#define MAX_RT sta&(10;j-) for(i=80;i0;i-);/*/*NRF24L01初始化/*/void init_NRF24L01(void) inerDelay_us(100); CE=0; / chip enable CSN=1; / Spi disable SCK=0; / Spi clock line init high SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); / 写本地地址 SPI_W

10、rite_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH); / 写接收端地址 SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); / 频道0自动 ACK应答打开 SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); / 允许接收地址只有频道0，如果需要多频道可以参考Page21 SPI_RW_Reg(WRITE_REG + SETUP_RETR, 0x1a); /自动重发10次 SPI_RW_Reg(WRITE_REG + RF_CH, 0); / 设置信道工作为2.4GHZ，收发必须

11、一致 SPI_RW_Reg(WRITE_REG + RX_PW_P0, RX_PLOAD_WIDTH); /设置接收数据长度，本次设置为32字节 SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); /设置发射速率为1MHZ，发射功率为最大值0dB/*/*函数：uint SPI_RW(uint uchar)/*功能：NRF24L01的SPI写时序/*/uint SPI_RW(uint data) uchar i;/,temp=0; for(i=0;i8;i+) / output 8-bit if(data & 0x80) MOSI=1 ; / output uchar

12、, MSB to MOSI else MOSI=0; data = (data 1); / shift next bit into MSB. SCK=1; / Set SCK high. if(Read_MISO) data |= 1; / capture current MISO bit SCK=0; / .then set SCK low again return(data); / return read uchar/*/*函数：uchar SPI_Read(uchar reg)/*功能：NRF24L01的SPI时序/*/uchar SPI_Read(uchar reg) uchar re

13、g_val; CSN = 0; / CSN low, initialize SPI communication. SPI_RW(reg); / Select register to read from. reg_val = SPI_RW(0); / .then read registervalue CSN = 1; / CSN high, terminate SPI communication return(reg_val); / return register value/*/*功能：NRF24L01读写寄存器函数/*/uint SPI_RW_Reg(uchar reg, uchar val

14、ue) uint status; CSN = 0; / CSN low, init SPI transaction status = SPI_RW(reg); / select register SPI_RW(value); / .and write value to it. CSN = 1; / CSN high again return(status); / return nRF24L01 status uchar/*/*函数：uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars)/*功能: 用于读数据，reg：为寄存器地址，pBuf

15、：为待读出数据地址，uchars：读出数据的个数/*/uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars) uint status,uchar_ctr; CSN = 0; / Set CSN low, init SPI tranaction status = SPI_RW(reg); / Select register to write to and read status uchar for(uchar_ctr=0;uchar_ctruchars;uchar_ctr+) pBufuchar_ctr = SPI_RW(0); / CSN

16、 = 1; return(status); / return nRF24L01 status uchar/*/*函数：uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars)/*功能: 用于写数据：为寄存器地址，pBuf：为待写入数据地址，uchars：写入数据的个数/*/uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars) uint status,uchar_ctr; CSN = 0; /SPI使能 status = SPI_RW(reg); for(uchar_ctr=0;

17、uchar_ctruchars; uchar_ctr+) / SPI_RW(*pBuf+); CSN = 1; /关闭SPI return(status); / /*/*函数：void SetRX_Mode(void)/*功能：数据接收配置 /*/void SetRX_Mode(void) CE=0; SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); / IRQ收发完成中断响应，16位CRC ，主接收 CE = 1; inerDelay_us(130);/*/*函数：unsigned char nRF24L01_RxPacket(unsigned char* rx_b

18、uf)/*功能：数据读取后放如rx_buf接收缓冲区中/*/unsigned char nRF24L01_RxPacket(unsigned char* rx_buf) unsigned char revale=0; sta=SPI_Read(STATUS); / 读取状态寄存其来判断数据接收状况 if(RX_DR) / 判断是否接收到数据 CE = 0; /SPI使能 SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH);/ read receive payload from RX_FIFO buffer revale =1; /读取数据完成标志 S

19、PI_RW_Reg(WRITE_REG+STATUS,sta); /接收到数据后RX_DR,TX_DS,MAX_PT都置高为1，通过写1来清楚中断标志 return revale;/*/*函数：void nRF24L01_TxPacket(unsigned char * tx_buf)/*功能：发送 tx_buf中数据/*/void nRF24L01_TxPacket(unsigned char * tx_buf) CE=0; /StandBy I模式 SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); / 装载接收

20、端地址 SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); / 装载数据 SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); / IRQ收发完成中断响应，16位CRC，主发送 CE=1; /置高CE，激发数据发送 inerDelay_us(10);/*nRF24L01端口初始化*void Port_init_nRF24L01(void) DDRA_Bit0=1; /CE设为输出 DDRA_Bit1=1; /CSN设为输出 DDRA_Bit2=1; /SCK设为输出 DDRA_Bit3=1; /MOSI设为输出 DDRA

21、_Bit4=0; /MISO设为输入 DDRA_Bit5=0; /IRQ设为输入/SC12A.h#define SCL PORTC_Bit6#define SDA PORTC_Bit7#define Read_SDA (PINC&(17)/#define ERR P1_3 / 指示通信过程有问题 #define CON_ADDR 0x81 / A6:0 + RWB = 81H ASEL 悬空 void Port_init_SC12A(void) DDRC_Bit6=1; /SCL设为输出 DDRC_Bit7=1; /SDA设为输出 PORTC_Bit6=1; PORTC_Bit7=1; unsigned int ReadKey(voi