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#include "StdAfx.h"
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#include ".\h7serial.h"
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CH7Serial::CH7Serial(void)
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: CSlipSerial()
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{
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}
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CH7Serial::CH7Serial(char* port, int bitrate)
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: CSlipSerial(port, bitrate)
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{
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}
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CH7Serial::~CH7Serial(void)
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{
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}
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short CH7Serial::readTarget(unsigned char target)
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{
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short retval;
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unsigned char frame[1];
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unsigned char hi_target = (target & 0x0F) << 4;
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frame[0] = hi_target | 0x00;
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writeFrame(frame,1);
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Sleep(50); //be nice and wait a little
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std::vector<unsigned char> answer = readFrame();
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if (answer.size() == 0)
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throw std::exception("No reply");
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if ( (answer[0] & 0x0F) != 0x02) // tjek for ACK
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throw std::exception("Request not acknowledged");
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if ( (answer[0] & 0xF0) != hi_target)
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throw std::exception("Incorrect reply");
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if (answer.size() == 2)
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retval = answer[1];
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else if (answer.size() == 3)
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retval = (answer[1]<<8) | answer[2];
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else
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retval = -1;
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return retval;
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}
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void CH7Serial::writeTarget(unsigned char target, unsigned char data)
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{
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unsigned char frame[2];
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unsigned char hi_target = (target & 0x0F) << 4;
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frame[0] = hi_target | 0x01;
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frame[1] = data;
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writeFrame(frame,2);
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Sleep(50); //be nice and wait a little
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std::vector<unsigned char> answer = readFrame();
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if (answer.size() == 0)
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throw std::exception("No reply");
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if ( (answer[0] & 0x0F) != 0x02) // tjek for ACK
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throw std::exception("Request not acknowledged");
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if ( (answer[0] & 0xF0) != hi_target)
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throw std::exception("Incorrect reply");
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}
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