高手看看 C51程序

2009-3-16 09:39:02 3258

0 #include #define uint unsigned int #define uchar unsigned char sfr P4 = 0XE8; *it A15 = P4^0; it A16 = P4^1; it R232 = P1^6; it GPRS = P1^5; uchar xdata address_index; //////////////////////////////////////////////////////////////////////////////////////////// // //写外部RAM // ///////////////////////////////////////////////////////////////////////////////////////////// WriteRAM(unsigned long address,unsigned int num,uchar m) { uchar address_h; uint address_l; uint i; address_h = (uchar)(address/32768); A15 = (bit)(address_h&0x01); A16 = (bit)(address_h&0x02); address_l = (uint)(address%32768); address_index = address_l; for(i=0;i { (address_index++) = (m++); if(address_index==0x8000) { address_index = 0x0000; { if(A15==0) { A15 = 1; } else { A15 = 0; if(A16==0) { A16 = 1; } else {} } } } } } /////////////////////////////////////////////////////////////////////////////////////////////// // //读外部RAM // ////////////////////////////////////////////////////////////////////////////////////////////// ReadRAM(unsigned long address,unsigned int num,uchar m) { uchar address_h; uint address_l; uint i; address_h = (uchar)(address/32768); A15 = (bit)(address_h&0x01); A16 = (bit)(address_h&0x02); address_l = (uint)(address%32768); address_index = address_l; for(i=0;i { (m++) = (address_index++); if(address_index==0x8000) { address_index = 0x0000; if(A15==0) { A15 = 1; } else { A15 = 0; if(A16==0) { A16 = 1; } else {} } } } } //////////////////////////////////////////////////////////////////////////////////////////////////////// // //设置波特率 // /////////////////////////////////////////////////////////////////////////////////////////////// void Com19200(void) { TMOD = 0X20; TH1 = 0XFD; TL1 = 0XFD; SCON = 0X50; PCON = 0X80; TR1 = 1; } ///////////////////////////////////////////////////////////////////////////////////////////////////// // // // ////////////////////////////////////////////////////////////////////////////////////////////// void Delay(void) { uchar i; for(i=0;i<250;i++); } void main(void) { uchar i,z; uchar m[10]={0x74,0x95,0x15,0x56,0x77,0x23,0x85,0xa6,0xff,0x4e}; uchar s[10]={0}; Com19200(); EA = 0; ES = 0; EA = 1; ES = 1; R232 = 0; GPRS = 1; WriteRAM(0x7ffe,10,m); ReadRAM(0x7ffe,10,s); for(i=0;i<10;i++) { SBUF = s; ti = 0; while(!TI); Delay(); /* SBUF = s; TI = 0; while(!TI); Delay(); SBUF = m; TI = 0; while(!TI); Delay();/ } while(1); } 以上从RAM中读的数总是不对，而下面的则能通过 #include #define uint unsigned int #define uchar unsigned char sfr P4 = 0XE8; it A15 = P4^0; it A16 = P4^1; it R232 = P1^6; it GPRS = P1^5; uchar xdata address_index; uchar m[10]={0x74,0x95,0x15,0x56,0x77,0x23,0x85,0xa6,0xff,0x4e}; uchar s[10]={0}; //////////////////////////////////////////////////////////////////////////////////////////// // //写外部RAM // ///////////////////////////////////////////////////////////////////////////////////////////// WriteRAM(unsigned long address,unsigned int num,uchar m) { uchar address_h; uint address_l; uint i; address_h = (uchar)(address/32768); A15 = (bit)(address_h&0x01); A16 = (bit)(address_h&0x02); address_l = (uint)(address%32768); address_index = address_l; for(i=0;i { (address_index++) = (m++); if(address_index==0x8000) { address_index = 0x0000; { if(A15==0) { A15 = 1; } else { A15 = 0; if(A16==0) { A16 = 1; } else {} } } } } } /////////////////////////////////////////////////////////////////////////////////////////////// // //读外部RAM // ////////////////////////////////////////////////////////////////////////////////////////////// ReadRAM(unsigned long address,unsigned int num,uchar m) { uchar address_h; uint address_l; uint i; address_h = (uchar)(address/32768); A15 = (bit)(address_h&0x01); A16 = (bit)(address_h&0x02); address_l = (uint)(address%32768); address_index = address_l; for(i=0;i { (m++) = (address_index++); if(address_index==0x8000) { address_index = 0x0000; if(A15==0) { A15 = 1; } else { A15 = 0; if(A16==0) { A16 = 1; } else {} } } } } //////////////////////////////////////////////////////////////////////////////////////////////////////// // //设置波特率 // /////////////////////////////////////////////////////////////////////////////////////////////// void Com19200(void) { TMOD = 0X20; TH1 = 0XFD; TL1 = 0XFD; SCON = 0X50; PCON = 0X80; TR1 = 1; } ///////////////////////////////////////////////////////////////////////////////////////////////////// // // // ////////////////////////////////////////////////////////////////////////////////////////////// void Delay(void) { uchar i; for(i=0;i<250;i++); } void main(void) { uchar i,z; Com19200(); EA = 0; ES = 0; EA = 1; ES = 1; R232 = 0; GPRS = 1; WriteRAM(0x7ffe,10,m); ReadRAM(0x7ffe,10,s); for(i=0;i<10;i++) { SBUF = s; TI = 0; while(!TI); Delay(); /* SBUF = s; TI = 0; while(!TI); Delay(); SBUF = m; TI = 0; while(!TI); Delay();*/ } while(1); } 两个就是数组定义的地方不同我觉的影响不大呀不知道为什么有高手的顶下谢谢了 0
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