基于Mega16的NRF24l01远程PPT翻页笔设计

#include <avr/io.h>
#include<avr/delay.h>
#define uchar unsigned char
#define uint unsigned int
//------------------------------------------------------------------------------
//spi标志
#define DDR_SPI DDRB
#define DD_MOSI 5
#define DD_MISO 6
#define DD_SCK 7
#define DD_SS 4
#define CE  PB3
#define IRQ PB2
//--------------------------------NRF24L01接口定义--------------------------------
//------------------------------------------------------------------------------
//#define NRF24L01_MISO          PB6  //输入0 
#define   Hign_24L01_MISO    PORTB|=(1 << 6)
#define   Low_24L01_MISO     PORTB &= ~(1 << 6)
#define   Read_24L01_MISO    PINB & (1 << 6)

//#define NRF24L01_MOSI         PB5       //输出1
#define   Hign_24L01_MOSI    PORTB |= (1 << 5) 
#define   Low_24L01_MOSI     PORTB &= ~(1 << 5)
#define   Read_24L01_MOSI    PINB & (1 << 5)

//#define NRF24L01_SCK    PB7      //输出1
#define   Hign_24L01_SCK    PORTB |= (1 << 7)  
#define   Low_24L01_SCK     PORTB &= ~(1 << 7)   
#define   Read_24L01_SCK    PINB & (1 <<7);

//#define NRF24L01_CSN       PB4       //输出1
#define   Low_24L01_CSN     PORTB &= ~(1 << 4)
#define   Hign_24L01_CSN    PORTB |= (1 << 4)

//#define NRF24L01_CE         PB2       //输出1
#define   Hign_24L01_CE    PORTB |= (1 << 3) 
#define   Low_24L01_CE     PORTB &= ~(1 << 3)  
#define   Read_24L01_CE    PINB & (1 << 3)

//char sta,count,tf;
//*********************************NRF24L01发送数据长度定义***************************************
#define TX_ADR_WIDTH    5     // 5 uints TX address width 地址最长为5
#define RX_ADR_WIDTH    5    // 5 uints RX address width 地址最长为5
#define TX_PLOAD_WIDTH  4          // 32 uints TX payload
#define RX_PLOAD_WIDTH  4    // 32 uints TX payload
unsigned char TX_ADDRESS[TX_ADR_WIDTH]= {0x34,0x43,0x10,0x10,0x01}; //TX:本地地址
unsigned char RX_ADDRESS[RX_ADR_WIDTH]= {0x34,0x43,0x10,0x10,0x01}; //RX:通道0地址，和基址相同
//*********************************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     0xA0    // 写待发数据指令
#define FLUSH_TX        0xE1   // 清空发送 FIFO指令
#define FLUSH_RX        0xE2    // 清空接收 FIFO指令
#define REUSE_TX_PL     0xE3    // 重复装载数据指令
#define NOP1             0xFF    // 保留

//****************************  **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