基于AVR的2401的程序.doc

#include #define uchar unsigned char#define uint unsigned int/-/spi标志#define DDR_SPI DDRB#define DD_MOSI 5#define DD_SCK 7#define DD_SS 4/-NRF24L01接口定义-/-/#define NRF24L01_MISO PB6/输入0#define Hign_24L01_MISO PORTB|=(1 PB6)#define Low_24L01_MISO PORTB &= (1 PB6)#define Read_24L01_MISO PINB & (1 PB6)/#define NRF24L01_MOSI PB5 /输出1#define Hign_24L01_MOSI PORTB |= (1 PB5)#define Low_24L01_MOSI PORTB &= (1 PB5)#define Read_24L01_MOSI PINB & (1 PB5)/#define NRF24L01_SCK PB7 /输出1#define Hign_24L01_SCK PORTB |= (1 PB7)#define Low_24L01_SCK PORTB &= (1 PB7) #define Read_24L01_SCK PINB & (1 PB7);/#define NRF24L01_CSN PB4 /输出1#define Low_24L01_CSN PORTB &= (1 PB4)#define Hign_24L01_CSN PORTB |= (1 PB4)/#define NRF24L01_CE PB2 /输出1#define Hign_24L01_CE PORTB |= (1 PB3)#define Low_24L01_CE PORTB &= (1 PB3)#define Read_24L01_CE PINB & (1 PB3)/char sta,count,tf;void spi_init()DDR_SPI = (1DD_MOSI)|(1DD_SCK)|(1DD_SS)|(1 PB3);/设置MOSI,SCK,SS.CE 为OUTPUT,其它为INPUTSPCR=(1SPE)|(1MSTR)|(1SPR0);/使能SPI接口,主机模式,MSB低位在前,模式0,16分频,SPI时钟1MHZSPSR=0;uchar SPI_RW(uchar date)SPDR=date; while(!(SPSR&(1SPIF); return SPDR;uchar SPI_Read(uchar reg)uchar reg_val;Low_24L01_CSN; / CSN low, initialize SPI communication.SPI_RW(reg); / Select register to read from.reg_val = SPI_RW(0); / .then read registervalueHign_24L01_CSN; / CSN high, terminate SPI communicationreturn(reg_val); / return register valueuchar SPI_RW_Reg(uchar reg, uchar value)uchar status;Low_24L01_CSN; / CSN low, init SPI transactionstatus = SPI_RW(reg); / select registerSPI_RW(value); / .and write value to it.Hign_24L01_CSN; / CSN high againreturn(status); / return nRF24L01 status ucharuchar SPI_Read_Buf(uchar reg, uchar *pBuf, uchar bites)uint status1,uchar_ctr;Low_24L01_CSN; / Set CSN low, init SPI tranactionstatus1 = SPI_RW(reg); / Select register to write to and read status ucharfor(uchar_ctr=0;uchar_ctrbites;uchar_ctr+)pBufuchar_ctr = SPI_RW(0); /Hign_24L01_CSN;return(status1); / return nRF24L01 status ucharuchar SPI_Write_Buf(uchar reg, uchar *pBuf, uchar bites)uchar status1,uchar_ctr;Low_24L01_CSN; /SPI使能status1 = SPI_RW(reg);for(uchar_ctr=0; uchar_ctrbites; uchar_ctr+) /SPI_RW(*pBuf+);Hign_24L01_CSN; /关闭SPIreturn(status1); /void SetRX_Mode(void)Low_24L01_CE;SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH);SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); /SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); /SPI_RW_Reg(WRITE_REG + RF_CH,0); /SPI_RW_Reg(WRITE_REG + RX_PW_P0, RX_PLOAD_WIDTH);SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07);SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f);Hign_24L01_CE;Delay(200);/注意不能太小uchar nRF24L01_RxPacket(uchar* rx_buf) uchar sta,flag=0;sta=SPI_Read(STATUS); / 读取状态寄存其来判断数据接收状况if(sta&0x40) / 判断是否接收到数据RX_DR=1? Low_24L01_CE; /SPI使能SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH);/ read receive payload from RX_FIFO bufferflag =1;/读取数据完成标志SPI_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 (flag);void nRF24L01_TxPacket(uchar * tx_buf)Low_24L01_CE;/StandBy I模式SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH);SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); / 装载接收端地址SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); / 装载数据SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); /SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); /SPI_RW_Reg(WRITE_REG + SETUP_RETR, 0x1a); /SPI_RW_Reg(WRITE_REG + RF_CH, 0); /SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); /SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); / IRQ收发完成中断响应，16位CRC，主发送Hign_24L01_CE; /置高CE，激发数据发送Delay(150);/void init_NRF24L01(void)spi_init();Low_24L01_CE; / chip enableHign_24L01_CSN; / Spi disableLow_24L01_SCK; / Spi clock line init high主函数（发送）#include #include #includeRF24L01.H#includeLCD1602.Huchar TX_BUF32=0x53,0x75,0x63,0x63,0x65,0x73,0x66,0x75,0x6c,0x21;/successful!void main() lcd_init(); init_NRF24L01(); LCD_write_str(0,0,fa song shu ju:); delay_ms(10); while(1) nRF24L01_TxPacket(TX_BUF); delay_ms(50);sta=SPI_Read(STATUS);/while(sta&0x20)/ for(i=0;i10;i+) LCD_write_char(1,i,TX_BUFi); SPI_RW_Reg(WRITE_REG+STATUS,0XFF); / delay_ms(500); 主函数（接收）#include #include #includeRF24L01.H#includeLCD1602.H#define mclk 8000000#pragma interrupt_handler uart_rx:12uchar RX_BUF32;uchar rdata,flag=0;void main() ucha