nrf401实验c51程序.doc

nrf401实验c51程序/*-nrf401实验程序雁塔菜农HotP-*/i nclude i nclude i nclude i nclude i nclude i nclude #define T0_8mS -8000#define T1_8mS -8000#define T2_1_25mS -576 /-1250*0.9216=1.25MS/*-系统函数-*/void MainInit(void);/系统初始化void ClrWdt(void);/喂狗void nRFInit(void);void SystemInit(void);/系统初始化void SystemSetup(void);/系统设置void SystemIoInit(void);/系统接口初始化void UserSetup(void);/用户运行环境设置void TimeInit(void);unsigned char crc8r(unsigned char crcbyte);unsigned int crc16r(unsigned int crcword, unsigned int crc);unsigned int GetTXBuffWord(unsigned char ledpos);void SetTXBuffWord(unsigned char ledpos, unsigned int val);unsigned int GetRXBuffWord(unsigned char ledpos);void SetRXBuffWord(unsigned char ledpos, unsigned int val);SystemData SystemBuffers;/申请系统数据结构SioData SioBuffers;/*-主程序初始化-*/void MainInit(void)/系统初始化SystemIoInit();/系统接口初始化ClrWdt();/清除看门狗计数器if (SystemBuffers.RamTest != 0x55aa) /内存测试SystemInit();/系统上电初始化SystemSetup();/系统运行环境设置UserSetup();/用户运行环境设置void SystemInit(void)/系统初始化SystemBuffers.RamTest = 0x55aa;/内存初始化void SystemSetup(void)/系统设置AUXR = 0x01;/关闭EMInRFInit();TimeInit();IP = 0x10;/中断优先级EX1ET2ET0EX0ESIE = 0xb4;/开中断EA,ET2,ET1,EX1,ET0void UserSetup(void)/用户运行环境设置void SystemIoInit(void)IE = 0x00;/关闭中断P0 = 0xff;/P0口初始化P1 = 0xff;/P1口初始化P2 = 0xff;/P2口初始化P3 = 0xff;/P3口初始化void TimeInit()TMOD = 0x21;/定时器0,1为方式1(十六位定时器)TCON = 0x55;/启动定时器TR1EQUTR0EQU1,IT1EQUIT0EQU1/*-定时器0定时参数设置-*/TL0 = 0;TH0 = 0;TR0 = 1;/启动定时器0/*-定时器0定时参数设置-*/TL1 = SIO_BPS;TH1 = SIO_BPS;PCON = 0x00;TR1 = 1;/启动定时器1/*-定时器2定时参数设置-*/TIMEER2 = T2_1_25mS;RCAP= T2_1_25mS;TR2= 1;/启动定时器2void nRFInit(void)nRFCS= 0;/433.92MHz/1/434.33MHznRFTXEN= 0;/接收nRFPWR= 1;/上电SioBuffers.TXMAXCount = 0;SioBuffers.TXCount = 0;/SioBuffers.RXCount = 0;SCON= 0x50;/* SCON: mode 2, 9-bit UART, enable rcvr*/SioBuffers.RXCount = 16;/*-外部INT0中断服务程序-*/void int0proc() interrupt IE0_VECTOR/ using 1/*-定时器T0中断服务程序-*/void t0proc() interrupt TF0_VECTOR/ using 1/*-外部INT1中断服务程序-*/void int1proc() interrupt IE1_VECTOR using 1/*-定时器T1中断服务程序-*/void t1proc() interrupt TF1_VECTOR/ using 1/*-串口SIO中断服务程序-*/void sioproc() interrupt SIO_VECTOR/ using 1unsigned char i;unsigned int crc;if (RI) /接收中断RI = 0;if (!nRFTXEN & SioBuffers.RXCount) /每次接收20个数据i = SBUF;SioBuffers.RXCount -;SioBuffers.RXBuffers19 - SioBuffers.RXCount = i;switch(SioBuffers.RXCount) case 19:if (i != 0x55) SioBuffers.RXCount = 20;break;case 18:if (i != 0xaa) SioBuffers.RXCount = 20;break;case 0:crc = 0;for (i = 1; i = 8; i +) crc = crc16r(GetRXBuffWord(i + i), crc);if (crc != GetRXBuffWord(18)SioBuffers.RXCount = 20;else nRFTXEN = 1;/发送for (i = 0; i 19) SBUF = 0x00;/SBUF = 0xff;else SBUF = SioBuffers.TXBuffers19 - SioBuffers.TXCount;if (SioBuffers.TXCount = 0) if (SioBuffers.TXMAXCount) SioBuffers.TXMAXCount -;SioBuffers.TXCount = TX_Count;else nRFTXEN = 0;/发送结束立即转为接收SioBuffers.RXCount = 20;/*-定时器T2中断服务程序(1.25mS)-*/void t2proc() interrupt TF2_VECTOR/ using 2/unsigned char i;/unsigned int crc;TF2 = 0;if (PCON & GF0) /中断是从主循环内跳入的才能喂狗ClrWdt();/清除看门狗计数器PCON &= GF0;/清除标志 SystemBuffers.T2Count +; /if (SystemBuffers.T2Count = 80) /100mS到if (SystemBuffers.T2Count = 400) /500mS到SystemBuffers.T2Count = 0;/if (SystemBuffers.T2Count & 3) = 0) & (SioBuffers.TXCount = 0) /10mS/if (SioBuffers.TXCount = 0) /10mS/*if (!ES & (SioBuffers.TXCount = 0) /10mSSioBuffers.TXCount = 18;crc =GetTXBuffWord(2);crc = crc16r(crc);SetTXBuffWord(4, crc);nRFTXEN = 1;/发送TI = 1;ES = 1;*/ /SioBuffers.TXCount = 8;/nRFTXEN = 1;/发送/ SBUF = SioBuffers.TXBuffers0;/ES = 1;void ClrWdt(void)/喂狗WDTRST = 0x1e;/89s52内狗WDTRST = 0xe1;/89s52内狗unsigned char crc8r(unsigned char crcbyte) unsigned char i,crc; crc = 0;for(i = 0; i = 1; else crc = 0x18;/0x18;/CRC=X8+X5+X4+1crc = 1; crc |= 0x80; crcbyte = 1; return crc; unsigned int crc16r(unsigned int crcword, unsigned int crc) unsigned char i; for(i = 0; i = 1; else crc = 0x810;/0x0810;/CRC=X16+X12+X5+1 crc = 1; crc |= 0x8000; crcword = 1; return crc; unsigned int GetTXBuffWord(unsigned char ledpos)unsigned char val1, val2;unsigned int val;val1 = SioBuffers.TXBuffersledpos;val2 = SioBuffers.TXBuffersledpos + 1;val = (val1 8); SioBuffers.TXBuffersledpos + 1 = val & 0xff;unsign