Subversion Repositories svnkaklik

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Rev 410 | Details | Compare with Previous | Last modification | View Log

Rev Author Line No. Line
6 kaklik 1 
#include "main.h"
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#include "ps2mouse.h"
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void send(byte command)
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{
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   int n;
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   int parity=0;
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   //Request-to-send
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   input(DATA);
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   output_low(CLK);
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   delay_us(100);
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   // start bit
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   output_low(DATA);
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   delay_us(20);
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   while(!input(CLK));
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   // 8 bitu
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   for(n=0; n<8; n++)
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   {
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      while(input(CLK));
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      output_bit(DATA, command & 1);
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      parity += command & 1;
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      command>>=1;
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      while(!input(CLK));
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   };
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   // parita
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   while(input(CLK));
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   output_bit(DATA, ~parity & 1);
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   while(!input(CLK));
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   // stop bit
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   while(input(CLK));
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   output_bit(DATA, 1);
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   while(!input(CLK));
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   output_float(DATA);
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}
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int8 read_byte(int8 const poradi)
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{
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int8 bajt;
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int8 i;
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   // cekani na komunikacni klid
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   for (i=0; i<poradi; i++)
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   {
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      if (!input(CLK) || !input(DATA)) i=0;
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   };
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   // cekani na startbit
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   while(input(CLK) || input(DATA));
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   while(!input(CLK));
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   bajt = 0;
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   for(i=0; i<8; i++)
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   {
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      while(input(CLK));   // ceka na nulu hodin
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      bajt >>= 1;
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      bajt |= input(DATA) << 7;
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      while(!input(CLK));  // ceka na jednicku hodin
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   };
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   return (bajt);
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}
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/*void read_all_byte(int8*st,*nd,*rd)           // precte 3 bajty
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{
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int8 i;
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//   *st=read_byte(1st);
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   // cekani na startbit
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   while(input(CLK) || input(DATA));
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   while(!input(CLK));
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   *nd = 0;
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   for(i=0; i<8; i++)
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   {
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      while(input(CLK));   // ceka na nulu hodin
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      *nd |= input(DATA) << 7;
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      *nd >>= 1;
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      while(!input(CLK));  // ceka na jednicku hodin
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   };
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   // cekani na startbit
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   while(input(CLK) || input(DATA));
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   while(!input(CLK));
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   *rd = 0;
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   for(i=0; i<8; i++)
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   {
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      while(input(CLK));   // ceka na nulu hodin
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      *rd |= input(DATA) << 7;
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      *rd >>= 1;
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      while(!input(CLK));  // ceka na jednicku hodin
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   };
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}*/