4-key-send.rar_24E1_24LE1

/* wireless.c ================================================================================================ *============================================================================================================= */ #include <reg24e1.h> #define uchar unsigned char #define uint unsigned int #define ADDR_INDEX 8 // 在 RFConfig.buf 地址字节的指针 #define ADDR_COUNT 4 // 地址字节的数目 #define num_buf 24 // 缓冲区的大小 #define num_RTcon 15 //定义io端口 sbit p00=P0^0; sbit p01=P0^1; sbit p02=P0^2; sbit p03=P0^3; sbit p04=P0^4; sbit p05=P0^5; sbit p06=P0^6; sbit p07=P0^7; bit flag_int1=0;//extern interrupte 1 bit flag_mORs=1; //1:master,transmitter; //0:slave,reciever volatile unsigned char idata RxBuf[num_buf]; //rec buf volatile unsigned char idata TxBuf[num_buf]; //tran buf volatile unsigned char idata Rxcheck[num_buf]; //rec buf const RxTxConf[15] = //发射接收配置 { 0xc0, 0xc0, 0x00, 0xab, 0xbc, 0x13, 0x35, 0x00, 0xaa, 0xbb, 0x12, 0x34, 0x80, 0xef, 0x04 }; void Delay100us(volatile uint n)//delay 100US { unsigned char i; while(n--) for(i=0;i<35;i++) ; } //--------------------------------led flash void LED(void) { unsigned char i; for(i=1;i<3;i++) { p07=1; Delay100us(2540); p07=0; Delay100us(2540); } } //----------------------------------------------SPI 读写函数 unsigned char SpiReadWrite(unsigned char b) { EXIF &= ~0x20; // 清除 SPI 中断 SPI_DATA = b; // 发送字节到SPI数据寄存器 while((EXIF & 0x20) == 0x00) // 一直等到SPI完成通信 ; return SPI_DATA; } //---------------------------------------------------set 24e1 to RX void SetRxMode(void) { CS = 1; Delay100us(0); SpiReadWrite(RxTxConf[num_RTcon-1] | 0x01); CS = 0; } void SetTxMode(void) //set 24e1 to TX { CS = 1; Delay100us(0); SpiReadWrite(RxTxConf[num_RTcon-1]); CS = 0; } //--------------------------------------------------------//初始化函数 void Init(void) { unsigned char i; for(i=0;i<num_buf;i++) { TxBuf[i]=i; Rxcheck[i]=i; } P0_DIR = 0x00; P0_ALT = 0x00; //************ SPI: SPICLK = 0x00; // 最大SPI时钟 (=CLK/8) SPI_CTRL = 0x02; // 连接SPI到射频CH1 //************ INT1: P0_DIR |= 0x10; P0_ALT |= 0x10; // IT1 = 0;//低电平有效 EX1 = 1;//外部中断允许 // PX1=1;//高优先级 flag_int1=0; // **********RADIO: PWR_UP = 1; Delay100us(40); // 等待大于3ms CE = 0; CS = 1; // RF SPI CE=0 CS = 1 配置使用 Delay100us(0); for(i=0;i<num_RTcon;i++) SpiReadWrite(RxTxConf[i]); CS = 0; //************* // IE = 0x95; EA = 1; // 开启全局中断 } //-----------------------------------------------------uart send ont byte void tbyte(uchar temp_T_byte) { SBUF = temp_T_byte; while(TI==0); TI=0; } //-----------------------------------------------------rf send ont packet void TxPacket(void)//发送包 { unsigned char i; CE = 1; Delay100us(0); // 所有包开始地址 for (i=0;i<ADDR_COUNT;i++) { SpiReadWrite(RxTxConf[ADDR_INDEX+i]); } /*从发送缓冲区读取包和通过SPI在线指令写到射频*/ for (i=0;i<num_buf;i++) { EXIF &= ~0x20; // 清除SPI中断 SPI_DATA = TxBuf[i]; // 发送数据到SPI数据寄存器 while((EXIF & 0x20) == 0x00) // 一直等到SPI完成通信 ; } CE = 0; Delay100us(30); } //-----------------------------------------------------rf rec packet void RxPacket(void) { unsigned char index_Rbuf=0; while(DR1) { EXIF &= ~0x20; // 清除SPI中断 SPI_DATA = 0; // 写空字节到SPI数据寄存器 while((EXIF & 0x20) == 0x00) // 一直等到SPI完成接收 ; RxBuf[index_Rbuf] = SPI_DATA;//save to RX buf tbyte( RxBuf[index_Rbuf]); //send to pc by uart index_Rbuf+=1; } index_Rbuf=0; } uchar checkrec(void) { unsigned char i,j; for(i=0,j=0;i<num_buf;i++) if(Rxcheck[i]=RxBuf[i]) j+=1; if(j==23) return 1; else return 0; } //=----------------------------------------------- interrupt service void service_int1() interrupt 2 { EX1=0; flag_int1=1; } //---------------------------------------------------main function void main(void) { unsigned char i; Init(); // 初始化 LED(); SetRxMode(); P0=0; CE = 1; Delay100us(30); while(1) { if(flag_int1) { SetTxMode(); //while(1) TxPacket(); SetRxMode(); CE = 1; Delay100us(30); flag_int1=0; Delay100us(9250); EX1=1; } if(DR1) { RxPacket(); if(checkrec()) { i+=1; P0=0x40|(i/10); P0=0x20|(i%10); if(i>98) i=0; } } } }