I2CMaster.cpp

00001 /*******************************************************************************
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00003 *
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00010 *
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00012 * in all copies or substantial portions of the Software.
00013 *
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00021 *
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00032 
00033 #include <MaximInterface/Utilities/Error.hpp>
00034 #include "I2CMaster.hpp"
00035 
00036 namespace MaximInterface {
00037 
00038 error_code I2CMaster::writeBlock(span<const uint_least8_t> data) {
00039   error_code result;
00040   for (span<const uint_least8_t>::index_type i = 0;
00041        i < data.size() && !result; ++i) {
00042     result = writeByte(data[i]);
00043   }
00044   return result;
00045 }
00046 
00047 error_code I2CMaster::writePacketImpl(uint_least8_t address,
00048                                       span<const uint_least8_t> data,
00049                                       bool sendStop) {
00050   error_code result = start(address & 0xFE);
00051   if (!result) {
00052     result = writeBlock(data);
00053   }
00054   if (sendStop) {
00055     error_code stopResult = stop();
00056     if (!result) {
00057       result = stopResult;
00058     }
00059   }
00060   return result;
00061 }
00062 
00063 error_code I2CMaster::readBlock(AckStatus status, span<uint_least8_t> data) {
00064   error_code result;
00065   for (span<uint_least8_t>::index_type i = 0; i < data.size() && !result; ++i) {
00066     result = readByte(i == (data.size() - 1) ? status : Ack, data[i]);
00067   }
00068   return result;
00069 }
00070 
00071 error_code I2CMaster::readPacketImpl(uint_least8_t address,
00072                                      span<uint_least8_t> data, bool sendStop) {
00073   error_code result = start(address | 0x01);
00074   if (!result) {
00075     result = readBlock(Nack, data);
00076   }
00077   if (sendStop) {
00078     error_code stopResult = stop();
00079     if (!result) {
00080       result = stopResult;
00081     }
00082   }
00083   return result;
00084 }
00085 
00086 const error_category & I2CMaster::errorCategory() {
00087   static class : public error_category {
00088   public:
00089     virtual const char * name() const { return "I2CMaster"; }
00090 
00091     virtual std::string message(int condition) const {
00092       switch (condition) {
00093       case NackError:
00094         return "Nack Error";
00095 
00096       default:
00097         return defaultErrorMessage(condition);
00098       }
00099     }
00100   } instance;
00101   return instance;
00102 }
00103 
00104 } // namespace MaximInterface