OneWireMaster.cpp

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00032 
00033 #include "Masters/OneWireMaster.h"
00034 
00035 namespace OneWire
00036 {
00037     OneWireMaster::CmdResult OneWireMaster::OWWriteBlock(const uint8_t *sendBuf, size_t sendLen)
00038     {
00039         CmdResult result = OperationFailure;
00040 
00041         for (size_t idx = 0; idx < sendLen; idx++)
00042         {
00043             result = OWWriteByte(sendBuf[idx]);
00044             if (result != Success)
00045             {
00046                 break;
00047             }
00048         }
00049 
00050         return result;
00051     }
00052 
00053     OneWireMaster::CmdResult OneWireMaster::OWReadBlock(uint8_t *recvBuf, size_t recvLen)
00054     {
00055         CmdResult result = OperationFailure;
00056 
00057         for (size_t idx = 0; idx < recvLen; idx++)
00058         {
00059             result = OWReadByte(recvBuf[idx]);
00060             if (result != Success)
00061             {
00062                 break;
00063             }
00064         }
00065 
00066         return result;
00067     }
00068 
00069     OneWireMaster::CmdResult OneWireMaster::OWTriplet(SearchDirection & searchDirection, uint8_t & sbr, uint8_t & tsb)
00070     {
00071         CmdResult result;
00072         result = OWReadBit(sbr);
00073         if (result == Success)
00074         {
00075             result = OWReadBit(tsb);
00076         }
00077         if (result == Success)
00078         {
00079             if (sbr)
00080             {
00081                 searchDirection = WriteOne;
00082             }
00083             else if (tsb)
00084             {
00085                 searchDirection = WriteZero;
00086             }
00087             // else: use search_direction parameter
00088 
00089             result = OWWriteBit((searchDirection == WriteOne) ? 1 : 0);
00090         }
00091         return result;
00092     }
00093 }