Superseded by MaximInterface.

Diff: Temperature/DS1920/DS1920.cpp

Revision:

80:83b0d879cc32

Child:

81:e2a3ad98874e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Temperature/DS1920/DS1920.cpp	Thu Jun 02 21:56:16 2016 +0000
@@ -0,0 +1,202 @@
+/******************************************************************//**
+* Copyright (C) 2016 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 "DS1920.h"
+
+
+using namespace OneWire;
+using namespace OneWire::crc;
+
+
+enum DS1920_CMDS
+{
+    WRITE_SCRATCHPAD = 0x4E,
+    READ_SCRATCHPAD = 0xBE,
+    COPY_SCRATCHPAD = 0x48,
+    CONV_TEMPERATURE = 0x44,
+    RECALL = 0xB8  
+};
+
+
+/**********************************************************************/
+DS1920::DS1920(RandomAccessRomIterator &selector) : OneWireSlave(selector)
+{
+}
+
+
+/**********************************************************************/
+DS1920::CmdResult DS1920::writeScratchPad(uint8_t th, uint8_t tl)
+{
+    DS1920::CmdResult deviceResult = DS1920::OpFailure;
+    
+    OneWireMaster::CmdResult owmResult = selectDevice();
+    
+    if (owmResult == OneWireMaster::Success)
+    {
+        uint8_t sendBlock[] = {WRITE_SCRATCHPAD, th, tl};
+        
+        owmResult = master().OWWriteBlock(sendBlock, 3);
+        if (owmResult == OneWireMaster::Success)
+        {
+            deviceResult = DS1920::Success;
+        }
+        else
+        {
+            deviceResult = DS1920::CommsWriteError;
+        }
+    }
+    
+    return deviceResult;
+}
+
+
+/**********************************************************************/
+DS1920::CmdResult DS1920::readScratchPad(uint8_t * scratchPadBuff)
+{
+    DS1920::CmdResult deviceResult = DS1920::OpFailure;
+    
+    OneWireMaster::CmdResult owmResult = selectDevice();
+    
+    if (owmResult == OneWireMaster::Success)
+    {
+        uint8_t cmd = READ_SCRATCHPAD;
+        
+        owmResult = master().OWWriteBlock(&cmd, 1);
+        if (owmResult == OneWireMaster::Success)
+        {
+            uint8_t rxBlock[9];
+            owmResult = master().OWReadBlock(rxBlock, 9);
+            
+            uint8_t crcCheck = calculateCrc8(rxBlock, 8);
+            if ((owmResult == OneWireMaster::Success) && (crcCheck == rxBlock[8]))
+            {
+                std::memcpy(scratchPadBuff, rxBlock, 8);
+                deviceResult = DS1920::Success;
+            }
+            else
+            {
+                deviceResult = DS1920::CommsReadError;
+            }
+        }
+        else
+        {
+            deviceResult = DS1920::CommsWriteError;
+        }
+    }
+    
+    return deviceResult;
+}
+
+/**********************************************************************/
+DS1920::CmdResult DS1920::copyScratchPad( void )
+{
+    DS1920::CmdResult deviceResult = DS1920::OpFailure;
+    
+    OneWireMaster::CmdResult owmResult = selectDevice();
+    
+    if (owmResult == OneWireMaster::Success)
+    {
+        owmResult = master().OWWriteByteSetLevel(COPY_SCRATCHPAD, OneWireMaster::StrongLevel); 
+        if (owmResult == OneWireMaster::Success)
+        {
+            wait_ms(10);
+            
+            owmResult = master().OWSetLevel(OneWireMaster::NormalLevel);  
+            if (owmResult == OneWireMaster::Success)
+            {
+                deviceResult = DS1920::Success;
+            }
+        }
+        else
+        {
+            deviceResult = DS1920::CommsWriteError;
+        }
+    }
+    
+    return deviceResult;
+}
+
+/**********************************************************************/
+DS1920::CmdResult DS1920::convertTemperature(uint16_t temp)
+{
+    DS1920::CmdResult deviceResult = DS1920::OpFailure;
+    
+    OneWireMaster::CmdResult owmResult = selectDevice();
+    
+    if (owmResult == OneWireMaster::Success)
+    {
+        owmResult = master().OWWriteByteSetLevel(CONV_TEMPERATURE, OneWireMaster::StrongLevel); 
+        if (owmResult == OneWireMaster::Success)
+        {
+            wait_ms(750);
+            
+            owmResult = master().OWSetLevel(OneWireMaster::NormalLevel);  
+            if (owmResult == OneWireMaster::Success)
+            {
+                deviceResult = DS1920::Success;
+            }
+        }
+        else
+        {
+            deviceResult = DS1920::CommsWriteError;
+        }
+    }
+    
+    return deviceResult;
+}
+
+
+/**********************************************************************/
+DS1920::CmdResult DS1920::recallEEPROM( void )
+{
+    DS1920::CmdResult deviceResult = DS1920::OpFailure;
+    
+    OneWireMaster::CmdResult owmResult = selectDevice();
+    
+    if (owmResult == OneWireMaster::Success)
+    {
+        uint8_t cmd = RECALL;
+        
+        owmResult = master().OWWriteBlock(&cmd, 1);
+        if (owmResult == OneWireMaster::Success)
+        {
+            deviceResult = DS1920::Success;
+        }
+        else
+        {
+            deviceResult = DS1920::CommsWriteError;
+        }
+    }
+    
+    return deviceResult;
+}