Diff: Platforms/mxc/OneWireMaster.cpp

Revision:

0:f77ad7f72d04

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Platforms/mxc/OneWireMaster.cpp	Mon Nov 06 14:39:18 2017 -0600
@@ -0,0 +1,103 @@
+/*******************************************************************************
+* 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 MaximInterface {
+namespace mxc {
+
+error_code OneWireMaster::initialize(const owm_cfg_t & owmCfg,
+                                     const sys_cfg_owm_t & sysCfgOwm) {
+  extStrongPup = (owmCfg.ext_pu_mode != OWM_EXT_PU_UNUSED);
+  return makeErrorCode(OWM_Init(owm, &owmCfg, &sysCfgOwm));
+}
+
+error_code OneWireMaster::shutdown() {
+  return makeErrorCode(OWM_Shutdown(owm));
+}
+
+error_code OneWireMaster::reset() {
+  return OWM_Reset(owm) ? error_code() : make_error_code(NoSlaveError);
+}
+
+error_code OneWireMaster::touchBitSetLevel(bool & sendRecvBit,
+                                           Level afterLevel) {
+  sendRecvBit = OWM_TouchBit(owm, sendRecvBit);
+  return setLevel(afterLevel);
+}
+
+error_code OneWireMaster::writeByteSetLevel(uint_least8_t sendByte,
+                                            Level afterLevel) {
+  error_code result = makeErrorCode(OWM_WriteByte(owm, sendByte));
+  if (!result) {
+    result = setLevel(afterLevel);
+  }
+  return result;
+}
+
+error_code OneWireMaster::readByteSetLevel(uint_least8_t & recvByte,
+                                           Level afterLevel) {
+  recvByte = OWM_ReadByte(owm);
+  return setLevel(afterLevel);
+}
+
+error_code OneWireMaster::setSpeed(Speed newSpeed) {
+  error_code result;
+  if (newSpeed == OverdriveSpeed) {
+    OWM_SetOverdrive(owm, 1);
+  } else if (newSpeed == StandardSpeed) {
+    OWM_SetOverdrive(owm, 0);
+  } else {
+    result = make_error_code(InvalidSpeedError);
+  }
+  return result;
+}
+
+error_code OneWireMaster::setLevel(Level newLevel) {
+  error_code result;
+  if (extStrongPup) {
+    if (newLevel == StrongLevel) {
+      OWM_SetExtPullup(owm, 1);
+    } else if (newLevel == NormalLevel) {
+      OWM_SetExtPullup(owm, 0);
+    } else {
+      result = make_error_code(InvalidLevelError);
+    }
+  } else if (newLevel != NormalLevel) {
+    result = make_error_code(InvalidLevelError);
+  }
+  return result;
+}
+
+} // namespace mxc
+} // namespace MaximInterface