nrf24l01 AVR 發(fā)射和接收調試成功

1、注明：本發(fā)射程序帶SC12A觸摸按鍵程序，不要可以去掉，不去也行。 接收程序帶液晶1602程序。 實現功能發(fā)射端按鍵后控制接收端兩個LED燈亮滅。其它功能可根據愛好自己添加。 本程序編譯軟件IAR。運行平臺為ATmega16。晶振頻率為8MHZ，其他頻率也可以，但是要修改延時函數void inerDelay_us(uchar n),使其延時時間不變，不然運行不成功（切記，經驗教訓?。。┌l(fā)射程序：nrf24l01.htypedef unsigned char uchar;typedef unsigned int uint;/*NRF24L01端口定義*#define CE PORTA_Bit0#

2、define CSN PORTA_Bit1#define SCK PORTA_Bit2#define MOSI PORTA_Bit3#define Read_MISO PINA&(1<<4)#define Read_IRQ PINA&(1<<5)/*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#

3、define 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 / 讀寄存器指令#define WRITE_REG 0x20 / 寫寄存器指令#define RD_RX_PLOAD 0x61 / 讀取接收數據指令#define WR_TX_PLOAD 0x

4、A0 / 寫待發(fā)數據指令#define FLUSH_TX 0xE1 / 沖洗發(fā)送 FIFO指令#define FLUSH_RX 0xE2 / 沖洗接收 FIFO指令#define REUSE_TX_PL 0xE3 / 定義重復裝載數據指令#define NOP 0xFF / 保留/*SPI(nRF24L01)寄存器地址*#define CONFIG 0x00 / 配置收發(fā)狀態(tài)，CRC校驗模式以及收發(fā)狀態(tài)響應方式#define EN_AA 0x01 / 自動應答功能設置#define EN_RXADDR 0x02 / 可用信道設置#define SETUP_AW 0x03 / 收發(fā)地址寬度設置#

5、define SETUP_RETR 0x04 / 自動重發(fā)功能設置#define RF_CH 0x05 / 工作頻率設置#define RF_SETUP 0x06 / 發(fā)射速率、功耗功能設置#define STATUS 0x07 / 狀態(tài)寄存器#define OBSERVE_TX 0x08 / 發(fā)送監(jiān)測功能#define CD 0x09 / 地址檢測 #define RX_ADDR_P0 0x0A / 頻道0接收數據地址#define RX_ADDR_P1 0x0B / 頻道1接收數據地址#define RX_ADDR_P2 0x0C / 頻道2接收數據地址#define RX_ADDR_P3

6、 0x0D / 頻道3接收數據地址#define RX_ADDR_P4 0x0E / 頻道4接收數據地址#define RX_ADDR_P5 0x0F / 頻道5接收數據地址#define TX_ADDR 0x10 / 發(fā)送地址寄存器#define RX_PW_P0 0x11 / 接收頻道0接收數據長度#define RX_PW_P1 0x12 / 接收頻道0接收數據長度#define RX_PW_P2 0x13 / 接收頻道0接收數據長度#define RX_PW_P3 0x14 / 接收頻道0接收數據長度#define RX_PW_P4 0x15 / 接收頻道0接收數據長度#define

7、RX_PW_P5 0x16 / 接收頻道0接收數據長度#define FIFO_STATUS 0x17 / FIFO棧入棧出狀態(tài)寄存器設置/*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);/*長延時*void Delay(uint s)uint i;for(i=0; i<s; i+);for(i=0; i<s; i+);/*uchar sta;

9、 /狀態(tài)標志#defineRX_DRsta&(1<<6)#define TX_DSsta&(1<<5)#defineMAX_RTsta&(1<<4)/*/*延時函數/*/void inerDelay_us(uchar n)uchar i,j; for(j=n;j>0;j-) for(i=80;i>0;i-);/*/*NRF24L01初始化/*/void init_NRF24L01(void) inerDelay_us(100); CE=0; / chip enable CSN=1; / Spi disable SCK=0;

10、 / Spi clock line init highSPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); / 寫本地地址SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH); / 寫接收端地址SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); / 頻道0自動ACK應答打開SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); / 允許接收地址只有頻道0，如果需要多頻道可以參考Page21 SPI_RW_

11、Reg(WRITE_REG + SETUP_RETR, 0x1a); /自動重發(fā)10次SPI_RW_Reg(WRITE_REG + RF_CH, 0); / 設置信道工作為2.4GHZ，收發(fā)必須一致SPI_RW_Reg(WRITE_REG + RX_PW_P0, RX_PLOAD_WIDTH); /設置接收數據長度，本次設置為32字節(jié)SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); /設置發(fā)射速率為1MHZ，發(fā)射功率為最大值0dB/*/*函數：uint SPI_RW(uint uchar)/*功能：NRF24L01的SPI寫時序/*/uint SPI_RW(uin

12、t data)uchar i;/,temp=0; for(i=0;i<8;i+) / output 8-bit if(data & 0x80) MOSI=1 ; / output 'uchar', 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 bitSCK=0; / .then set SCK low again ret

13、urn(data); / return read uchar/*/*函數：uchar SPI_Read(uchar reg)/*功能：NRF24L01的SPI時序/*/uchar SPI_Read(uchar reg)uchar reg_val;CSN = 0; / CSN low, initialize SPI communication.SPI_RW(reg); / Select register to read from.reg_val = SPI_RW(0); / .then read registervalueCSN = 1; / CSN high, terminate SPI co

14、mmunicationreturn(reg_val); / return register value/*/*功能：NRF24L01讀寫寄存器函數/*/uint SPI_RW_Reg(uchar reg, uchar value)uint status;CSN = 0; / CSN low, init SPI transactionstatus = SPI_RW(reg); / select registerSPI_RW(value); / .and write value to it.CSN = 1; / CSN high againreturn(status); / return nRF2

15、4L01 status uchar/*/*函數：uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars)/*功能: 用于讀數據，reg：為寄存器地址，pBuf：為待讀出數據地址，uchars：讀出數據的個數/*/uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars)uint status,uchar_ctr;CSN = 0; / Set CSN low, init SPI tranactionstatus = SPI_RW(reg); / Select register to writ

16、e to and read status ucharfor(uchar_ctr=0;uchar_ctr<uchars;uchar_ctr+)pBufuchar_ctr = SPI_RW(0); / CSN = 1; return(status); / return nRF24L01 status uchar/*/*函數：uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars)/*功能: 用于寫數據：為寄存器地址，pBuf：為待寫入數據地址，uchars：寫入數據的個數/*/uint SPI_Write_Buf(uchar reg,

17、uchar *pBuf, uchar uchars)uint status,uchar_ctr;CSN = 0; /SPI使能 status = SPI_RW(reg); for(uchar_ctr=0; uchar_ctr<uchars; uchar_ctr+) /SPI_RW(*pBuf+);CSN = 1; /關閉SPIreturn(status); / /*/*函數：void SetRX_Mode(void)/*功能：數據接收配置 /*/void SetRX_Mode(void)CE=0;SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); / IRQ收發(fā)完

18、成中斷響應，16位CRC，主接收CE = 1; inerDelay_us(130);/*/*函數：unsigned char nRF24L01_RxPacket(unsigned char* rx_buf)/*功能：數據讀取后放如rx_buf接收緩沖區(qū)中/*/unsigned char nRF24L01_RxPacket(unsigned char* rx_buf) unsigned char revale=0;sta=SPI_Read(STATUS);/ 讀取狀態(tài)寄存其來判斷數據接收狀況if(RX_DR)/ 判斷是否接收到數據 CE = 0; /SPI使能SPI_Read_Buf(RD_RX

19、_PLOAD,rx_buf,TX_PLOAD_WIDTH);/ read receive payload from RX_FIFO bufferrevale =1;/讀取數據完成標志SPI_RW_Reg(WRITE_REG+STATUS,sta); /接收到數據后RX_DR,TX_DS,MAX_PT都置高為1，通過寫1來清楚中斷標志return revale;/*/*函數：void nRF24L01_TxPacket(unsigned char * tx_buf)/*功能：發(fā)送 tx_buf中數據/*/void nRF24L01_TxPacket(unsigned char * tx_buf)

20、CE=0;/StandBy I模式SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); / 裝載接收端地址SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); / 裝載數據SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); / IRQ收發(fā)完成中斷響應，16位CRC，主發(fā)送CE=1; /置高CE，激發(fā)數據發(fā)送inerDelay_us(10);/*nRF24L01端口初始化*void Port_init_nRF24L01(void) DDRA_Bit

21、0=1; /CE設為輸出 DDRA_Bit1=1; /CSN設為輸出 DDRA_Bit2=1; /SCK設為輸出 DDRA_Bit3=1; /MOSI設為輸出 DDRA_Bit4=0; /MISO設為輸入 DDRA_Bit5=0; /IRQ設為輸入/SC12A.h#define SCL PORTC_Bit6#define SDA PORTC_Bit7#define Read_SDA (PINC&(1<<7)/#define ERR P1_3 / 指示通信過程有問題 #define CON_ADDR 0x81 / A6:0 + RWB = 81H ASEL 懸空 void P

22、ort_init_SC12A(void) DDRC_Bit6=1; /SCL設為輸出 DDRC_Bit7=1; /SDA設為輸出 PORTC_Bit6=1; PORTC_Bit7=1; unsigned int ReadKey(void) unsigned char bitnum,temp,addr; unsigned int key2byte; unsigned char bit_temp; addr=CON_ADDR; key2byte=0xffff; / EA=0; / 屏蔽全局中斷 SDA=0; / 拉低 SDA 端口送出 START 信號 for(temp=0;temp<4;t

23、emp+) /延時 /發(fā)送 8 位地址字節(jié) (A6:0+RWB) for(bitnum=0;bitnum<8;bitnum+) SCL=0; temp=addr&0x80; if(temp=0x80) SDA=1; else SDA=0; addr=addr<<1; for(temp=0;temp<4;temp+) /延時 SCL=1; for(temp=0;temp<4;temp+) /延時 SDA=1; /釋放 SDA 端口,將 SDA 設置為輸入端口 SCL=0; for(temp=0;temp<4;temp+) /延時 SCL=1; for(

24、temp=0;temp<4;temp+) /延時 / bit_temp=SDA; / if(bit_temp) /讀 ack 回應 / ERR=0; /ack 信號沒有讀到，指示通信有誤 /讀 16 位按鍵數據字節(jié)(D15:0) for(bitnum=0;bitnum<16;bitnum+) SCL=0; for(temp=0;temp<4;temp+) /延時 SCL=1; for(temp=0;temp<4;temp+) /延時 bit_temp=Read_SDA; if(bit_temp) key2byte=key2byte<<1; key2byte=

25、key2byte|0x01; else key2byte=key2byte<<1; SCL=0; SDA=1; for(temp=0;temp<4;temp+) /延時 SCL=1; for(temp=0;temp<4;temp+) /延時 SCL=0; SDA=0; /發(fā)送 NACK 信號 for(temp=0;temp<4;temp+) /延時 SCL=1; for(temp=0;temp<4;temp+) /延時 SDA=1; /釋放 SDA 端口,將 SDA 設置為輸入端口 key2byte=key2byte0xffff; /EA=1; /全局中斷使

26、能 return(key2byte); /數據位為 1，說明相應按鍵被觸摸。例如，返回值為 0x5000 說明按 /鍵 CIN1 和 CIN3 被觸摸。 /發(fā)射主程序#include <iom16.h>#include "nRF24L01.h"#include "SC12A.h"/*按鍵*#defineup !(PINC&(1<<0)#definedown !(PINC&(1<<1)#defineleft !(PINC&(1<<2)#defineright !(PINC&(1

27、<<3)/*端口初始化*void port_init(void) DDRA_Bit6=1; DDRA_Bit7=1; PORTA |= (1<<6)|(1<<7); /PA5 = 1,PA6 = 1,PA7 = 1 DDRC=0; PORTC=0xff;/*主函數* main()unsigned char TxBuf20=0; unsigned int key; uchar sign=0; port_init(); Port_init_SC12A(); Port_init_nRF24L01(); init_NRF24L01() ;while(1) key=R

28、eadKey(); if(up|(key=0x8000) TxBuf1=1; sign=1; if(down|(key=0x4000) TxBuf2=1; sign=1; if(left|(key=0x2000) TxBuf3=1; sign=1; if(right|(key=0x1000) TxBuf4=1; sign=1; if(sign) nRF24L01_TxPacket(TxBuf);/ Transmit Tx buffer data sign=0; TxBuf1=0; TxBuf2=0; TxBuf3=0; TxBuf4=0; sta = SPI_Read(STATUS); if(

29、sta = 0x2e) /當發(fā)送完成時TX_DS = 1，PC3 = 0 PORTA &= (1 << 7); else PORTA |= (1 << 7); sta=0; SPI_RW_Reg(WRITE_REG + STATUS,0xff);/清除TX FIFO寄存器，避免數據不能及時更新 PORTA = (1 << 6); Delay(6000); Delay(6000); PORTA |= (1 << 7); Nrf24l01接收：delay.h#ifndef _IAR_DELAY_H#define _IAR_DELAY_H#in

30、clude <intrinsics.h>#define XTAL 8.0 /可定義為你所用的晶振頻率（單位Mhz）#define delay_us(x) _delay_cycles ( (unsigned long)(x * XTAL) ) #define delay_ms(x) _delay_cycles ( (unsigned long)(x * XTAL*1000) )#define delay_s(x) _delay_cycles ( (unsigned long)(x * XTAL*1000000) )#endif/1602.h/*設置管腳*/#define RS POR

31、TD_Bit0 #define RW PORTD_Bit1#define E PORTD_Bit2/*LCD1602控制指令*/#define LCD_Set 0x38 / 顯示初始化，16*2顯示，5*7點陣，8位數據接口 ;#define LCD_Clear 0x01 / 清屏LCD ;#define LCD_Display1 0x0f / 顯示功能設置:開顯示，顯示光標，光標閃爍 ;#define LCD_Display2 0x0c / 顯示功能設置:開顯示，不顯示光標，光標不閃爍 ;#define LCD_Mode 0x06 / 設置光標狀態(tài)默認0x06,為讀一個字符光標加1 ;#de

32、fine LCD_FirstLineAddress_Left 0x80 /設置初始化數據指針,指向 左半屏第一行首位 ; #define LCD_SecondLineAddress_Left (0x80+0x40) /設置初始化數據指針,指向 左半屏第二行首位 ;#define LCD_FirstLineAddress_Right (0x80+0x10) /設置初始化數據指針,指向 右半屏第一行首位 ; #define LCD_SecondLineAddress_Right (0x80+0x40+0x10) /設置初始化數據指針,指向 右半屏第二行首位 ;#define LCD_Move_Le

33、ft 0x18 / 整屏左移#define LCD_Move_Right 0x1c / 整屏右移/*端口初始化*/void Port_Init_1602()DDRD_Bit0 = 1; /控制端 RS 定義為輸出DDRD_Bit1 = 1; /控制端 RW 定義為輸出DDRD_Bit2 = 1; /控制端 E 定義為輸出DDRC = 0xFF; /數據端定義為輸出DDRD_Bit3 = 1; /背光控制端PORTD_Bit3 =1; /由三級管控制，高電平導通； 始終打開背光/*液晶1602 寫控制指令函數*/void Write_Command(unsigned char Command)R

34、S = 0 ; / 進行指令的操作RW = 0 ; / 進行寫操作PORTC = Command ; / 賦值指令E = 1 ; / 使能端拉高delay_ms(5); / 等待指令寫完E = 0 ; / 使能端拉低/*液晶1602 寫數據函數*/void Write_Data(unsigned char Data)RS = 1 ; / 進行數據的操作RW = 0 ; / 進行寫操作PORTC = Data ; / 賦值數據E = 1 ; / 使能端拉高delay_ms(5); / 等待數據寫完E = 0 ; / 使能端拉低/*液晶1602 使用初始化*/void LCD1602_Init()

35、E = 0;Write_Command(LCD_Set);Write_Command(LCD_Clear);Write_Command(LCD_Display2);Write_Command(LCD_Mode);/*液晶1602 清屏*/void LCD1602_Clear(void)Write_Command(LCD_Clear);/*液晶1602 左半屏顯示*/void LCD1602_Left_Display(unsigned char *table1 , unsigned char *table2)unsigned char i;Write_Command(LCD_FirstLineA

36、ddress_Left);delay_ms(1); /第一行顯示16個字符for(i=0;i<16;i+)Write_Data(table1i);delay_ms(1); Write_Command(LCD_SecondLineAddress_Left);delay_ms(1); /第二行顯示16個字符for(i=0;i<16;i+)Write_Data(table2i);delay_ms(1);/*液晶1602 右半屏顯示*/void LCD1602_Right_Display(unsigned char *table1 , unsigned char *table2)unsigned char i;Write_Command(LCD_FirstLineAddress_Right); /第一行顯示16個字符dela