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71 lines
1.4 KiB
C++
71 lines
1.4 KiB
C++
//
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// FILE: DS28CM00.cpp
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// AUTHOR: Rob Tillaart
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// PURPOSE: Library for the DS28CM00 unique identification chip.
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// VERSION: 0.1.0
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// URL:
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//
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// HISTORY:
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// 0.1.0 2017-07-15 initial version
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//
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// Released to the public domain
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//
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#include "DS28CM00.h"
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#define DS28CM00_DEVICEADDRESS 0x50
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#define DS28CM00_UIDREGISTER 0x00
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#define DS28CM00_CONTROLREGISTER 0x08
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DS28CM00::DS28CM00()
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{
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}
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void DS28CM00::begin()
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{
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Wire.begin();
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setI2CMode();
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}
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bool DS28CM00::setMode(uint8_t mode)
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{
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Wire.beginTransmission(DS28CM00_DEVICEADDRESS);
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Wire.write(DS28CM00_CONTROLREGISTER);
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Wire.write(mode);
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int rv = Wire.endTransmission();
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return rv == 0;
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}
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bool DS28CM00::getMode(uint8_t &mode)
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{
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Wire.beginTransmission(DS28CM00_DEVICEADDRESS);
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Wire.write(DS28CM00_CONTROLREGISTER);
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int rv = Wire.endTransmission();
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if (rv != 0) return false;
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uint8_t read = Wire.requestFrom(DS28CM00_DEVICEADDRESS, 1);
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if (read < 1) return false;
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mode = Wire.read();
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return true;
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}
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bool DS28CM00::getUID(uint8_t *buffer)
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{
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Wire.beginTransmission(DS28CM00_DEVICEADDRESS);
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Wire.write(DS28CM00_UIDREGISTER);
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int rv = Wire.endTransmission();
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if (rv != 0) return false;
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uint8_t read = Wire.requestFrom(DS28CM00_DEVICEADDRESS, 8);
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if (read < 8) return false;
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for (uint8_t i = 0; i < 8; i++) buffer[i] = Wire.read();
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// if (buffer[0] != 0x70) return false
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return true;
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}
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// END OF FILE
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