Diff: MaximInterfaceCore/OneWireMaster.cpp

Revision:

7:9cd16581b578

Child:

8:5ea891c7d1a1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MaximInterfaceCore/OneWireMaster.cpp	Mon Jul 22 11:44:07 2019 -0500
@@ -0,0 +1,130 @@
+/*******************************************************************************
+* Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a
+* copy of this software and associated documentation files (the "Software"),
+* to deal in the Software without restriction, including without limitation
+* the rights to use, copy, modify, merge, publish, distribute, sublicense,
+* and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+* OTHER DEALINGS IN THE SOFTWARE.
+*
+* Except as contained in this notice, the name of Maxim Integrated
+* Products, Inc. shall not be used except as stated in the Maxim Integrated
+* Products, Inc. Branding Policy.
+*
+* The mere transfer of this software does not imply any licenses
+* of trade secrets, proprietary technology, copyrights, patents,
+* trademarks, maskwork rights, or any other form of intellectual
+* property whatsoever. Maxim Integrated Products, Inc. retains all
+* ownership rights.
+*******************************************************************************/
+
+#include "Error.hpp"
+#include "OneWireMaster.hpp"
+
+namespace MaximInterfaceCore {
+
+static const int maxBitNum = 7;
+
+error_code OneWireMaster::writeByteSetLevel(uint_least8_t sendByte,
+                                            Level afterLevel) {
+  error_code result;
+  for (int bitNum = 0; (bitNum <= maxBitNum) && !result; ++bitNum) {
+    result = writeBitSetLevel(((sendByte >> bitNum) & 1) == 1,
+                              (bitNum == maxBitNum) ? afterLevel : NormalLevel);
+  }
+  return result;
+}
+
+error_code OneWireMaster::readByteSetLevel(uint_least8_t & recvByte,
+                                           Level afterLevel) {
+  recvByte = 0;
+  error_code result;
+  for (int bitNum = 0; bitNum <= maxBitNum; ++bitNum) {
+    bool recvBit;
+    result = readBitSetLevel(recvBit,
+                             (bitNum == maxBitNum) ? afterLevel : NormalLevel);
+    if (result) {
+      break;
+    }
+    if (recvBit) {
+      recvByte |= (1 << bitNum);
+    }
+  }
+  return result;
+}
+
+error_code OneWireMaster::writeBlock(span<const uint_least8_t> sendBuf) {
+  error_code result;
+  for (span<const uint_least8_t>::index_type i = 0;
+       i < sendBuf.size() && !result; ++i) {
+    result = writeByte(sendBuf[i]);
+  }
+  return result;
+}
+
+error_code OneWireMaster::readBlock(span<uint_least8_t> recvBuf) {
+  error_code result;
+  for (span<uint_least8_t>::index_type i = 0; i < recvBuf.size() && !result;
+       ++i) {
+    result = readByte(recvBuf[i]);
+  }
+  return result;
+}
+
+error_code OneWireMaster::triplet(TripletData & data) {
+  error_code result = readBit(data.readBit);
+  if (!result) {
+    result = readBit(data.readBitComplement);
+  }
+  if (!result) {
+    if (data.readBit) {
+      data.writeBit = 1;
+    } else if (data.readBitComplement) {
+      data.writeBit = 0;
+    }
+    // else: use data.writeBit parameter
+    result = writeBit(data.writeBit);
+  }
+  return result;
+}
+
+const error_category & OneWireMaster::errorCategory() {
+  static class : public error_category {
+  public:
+    virtual const char * name() const { return "OneWireMaster"; }
+
+    virtual std::string message(int condition) const {
+      switch (condition) {
+      case NoSlaveError:
+        return "No Slave Error";
+
+      case ShortDetectedError:
+        return "Short Detected Error";
+
+      case InvalidSpeedError:
+        return "Invalid Speed Error";
+
+      case InvalidLevelError:
+        return "Invalid Level Error";
+
+      default:
+        return defaultErrorMessage(condition);
+      }
+    }
+  } instance;
+  return instance;
+}
+
+} // namespace MaximInterfaceCore