Diff: Bridge/DS28E17/DS28E17.cpp

Revision:

73:2cecc1372acc

Parent:

27:d5aaefa252f1

Child:

74:23be10c32fa3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Bridge/DS28E17/DS28E17.cpp	Thu May 12 14:38:16 2016 -0500
@@ -0,0 +1,631 @@
+/******************************************************************//**
+* 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 "DS28E17.h"
+#include "Masters/OneWireMaster.h"
+
+using OneWire::Bridge::DS28E17;
+using OneWire::Masters::OneWireMaster;
+
+const uint16_t DS28E17::_oddparity[] = { 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0 };
+
+
+//*********************************************************************
+DS28E17::DS28E17(OneWireMaster &owm)
+: _owm(owm)
+{
+    
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::I2C_WriteDataWithStop(uint8_t I2C_addr, uint8_t length, 
+                                    uint8_t *data, uint8_t &status, 
+                                    uint8_t &wr_status)
+{
+    DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
+    
+    size_t send_cnt = 0;
+    uint8_t send_block[0xff];
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId);
+    
+    if(ow_result == OneWireMaster::Success)
+    {
+        //seed the crc
+        _crc16 = 0;
+        
+        // Form the 1-Wire Packet 
+        
+        // I2C Write Data with Stop command
+        send_block[send_cnt] = CMD_I2C_WRITE_W_STOP;
+        docrc16(send_block[send_cnt++]);
+        
+        // I2C Address
+        send_block[send_cnt] = I2C_addr;
+        docrc16(send_block[send_cnt++]);
+        
+        // Length field
+        send_block[send_cnt] = length;
+        docrc16(send_block[send_cnt++]);
+        
+        // Form the write data  
+        for (size_t idx = 0; idx < length; idx++) 
+        {
+            send_block[send_cnt] = data[idx];
+            docrc16(send_block[send_cnt++]);
+        }
+        
+        // Form the CRC16
+        _crc16 = _crc16^0xFFFF;
+        send_block[send_cnt++] = ((uint8_t)(_crc16 & 0xFF));
+        send_block[send_cnt++] = ((uint8_t)((_crc16 >> 8) & 0xFF));
+        
+        // Send Packet
+        bridge_result = send_packet(send_block, send_cnt, status, wr_status);
+    }
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::I2C_WriteDataNoStop(uint8_t I2C_addr, uint8_t length, 
+                                  uint8_t *data, uint8_t &status, 
+                                  uint8_t &wr_status)
+{
+    DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
+    
+    size_t send_cnt = 0;
+    uint8_t send_block[0xff];
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId);
+    
+    if(ow_result == OneWireMaster::Success)
+    {
+        // seed the crc
+        _crc16 = 0;
+        
+        // I2C Write Data with Stop command
+        send_block[send_cnt] = CMD_I2C_WRITE_NO_STOP;
+        docrc16(send_block[send_cnt++]);
+        
+        // I2C Address
+        send_block[send_cnt] = I2C_addr;
+        docrc16(send_block[send_cnt++]);
+        
+        // Length field
+        send_block[send_cnt] = length;
+        docrc16(send_block[send_cnt++]);
+        
+        // Form the write data
+        for(size_t idx = 0; idx < length; idx++)
+        {
+            send_block[send_cnt] = data[idx];
+            docrc16(send_block[send_cnt++]);
+        }
+        
+        // Form the CRC16
+        _crc16 = _crc16^0xFFFF;
+        send_block[send_cnt++] = ((uint8_t)(_crc16 & 0xFF));
+        send_block[send_cnt++] = ((uint8_t)((_crc16 >> 8) & 0xFF));
+        
+        // Send Packet
+        bridge_result = send_packet(send_block, send_cnt, status, wr_status);
+    }
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::I2C_WriteDataOnly(uint8_t length, uint8_t *data, 
+                                uint8_t &status, uint8_t &wr_status)
+{
+    DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
+    
+    size_t send_cnt = 0;
+    uint8_t send_block[0xff];
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId);
+    
+    if(ow_result == OneWireMaster::Success)
+    {
+        // seed the crc
+        _crc16 = 0;
+        
+        // Form the 1-Wire Packet
+        
+        // I2C Write Data with Stop command
+        send_block[send_cnt] = CMD_I2C_WRITE_ONLY;
+        docrc16(send_block[send_cnt++]);
+        
+        // Length field
+        send_block[send_cnt] = length;
+        docrc16(send_block[send_cnt++]);
+        
+        // Form the write data
+        for (size_t idx = 0; idx < length; idx++) 
+        {
+            send_block[send_cnt] = data[idx];
+            docrc16(send_block[send_cnt++]);
+        }
+        
+        // Form the CRC16\
+        _crc16 = _crc16^0xFFFF;
+        send_block[send_cnt++] = (_crc16 & 0xFF);
+        send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
+        
+        // Send Packet
+        bridge_result = send_packet(send_block, send_cnt, status, wr_status);
+    }
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::I2C_WriteDataOnlyWithStop(uint8_t length, uint8_t *data, 
+                                        uint8_t &status, uint8_t &wr_status)
+{
+    DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
+    
+    size_t send_cnt = 0;
+    uint8_t send_block[0xff];
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId);
+    
+    if(ow_result == OneWireMaster::Success)
+    {
+        //seed the crc
+        _crc16 = 0;
+    
+        // Form the 1-Wire Packet
+    
+        // I2C Write Data with Stop command
+        send_block[send_cnt] = CMD_I2C_WRITE_ONLY_W_STOP;
+        docrc16(send_block[send_cnt++]);
+    
+        // Length field
+        send_block[send_cnt] = length;
+        docrc16(send_block[send_cnt++]);
+    
+        // Form the write data
+        for (size_t idx = 0; idx < length; idx++) 
+        {
+            send_block[send_cnt] = data[idx];
+            docrc16(send_block[send_cnt++]);
+        }
+    
+        // Form the CRC16
+        _crc16 = _crc16^0xFFFF;
+        send_block[send_cnt++] = (_crc16 & 0xFF);
+        send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
+    
+        // Send Packet
+        bridge_result = send_packet(send_block, send_cnt, status, wr_status);
+    } 
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::I2C_WriteReadDataWithStop(uint8_t I2C_addr, uint8_t length, 
+                                        uint8_t *data, uint8_t nu_bytes_read, 
+                                        uint8_t &status, uint8_t &wr_status, 
+                                        uint8_t *read_data)
+{
+    DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
+    
+    size_t send_cnt = 0;
+    size_t idx = 0;
+    uint8_t send_block[0xff];
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId);
+    
+    if(ow_result == OneWireMaster::Success)
+    {
+        //seed the crc
+        _crc16 = 0;
+    
+        // Form the 1-Wire Packet
+    
+        // I2C Write Data with Stop command
+        send_block[send_cnt] = CMD_I2C_WRITE_READ_W_STOP;
+        docrc16(send_block[send_cnt++]);
+    
+        // I2C Address
+        send_block[send_cnt] = I2C_addr;
+        docrc16(send_block[send_cnt++]);
+    
+        // Length field
+        send_block[send_cnt] = length;
+        docrc16(send_block[send_cnt++]);
+    
+        // Form the write data
+        for (idx = 0; idx < length; idx++) 
+        {
+            send_block[send_cnt] = data[idx];
+            docrc16(send_block[send_cnt++]);
+        }
+    
+        // # of bytes to Read field
+        send_block[send_cnt] = nu_bytes_read;
+        docrc16(send_block[send_cnt++]);
+    
+        // Form the CRC16
+        _crc16 = _crc16^0xFFFF;
+        send_block[send_cnt++] = (_crc16 & 0xFF);
+        send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
+    
+        // Send Packet
+        bridge_result = send_packet(send_block, send_cnt, status, wr_status);
+        if(bridge_result == DS28E17::Success)
+        {
+            ow_result = _owm.OWReadBlock(read_data, nu_bytes_read);
+            if(ow_result == OneWireMaster::Success)
+            {
+                bridge_result = DS28E17::Success;
+            }
+            else
+            {
+                bridge_result = DS28E17::CommsReadBlockError;
+            }
+        }
+    }
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::I2C_ReadDataWithStop(uint8_t I2C_addr, uint8_t nu_bytes_read, 
+                                   uint8_t &status, uint8_t *read_data)
+{
+    DS28E17::CmdResult  bridge_result = DS28E17::OperationFailure;
+    
+    size_t send_cnt = 0;
+    uint8_t send_block[0xff];
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId);
+    
+    if(ow_result == OneWireMaster::Success)
+    {
+        //seed the crc for transmit bytes
+        _crc16 = 0;
+    
+        // Form the 1-Wire Packet to send
+    
+        // I2C Write Data with Stop command
+        send_block[send_cnt] = CMD_I2C_READ_W_STOP;
+        docrc16(send_block[send_cnt++]);
+    
+        // I2C Address
+        send_block[send_cnt] = I2C_addr;
+        docrc16(send_block[send_cnt++]);
+    
+        // # of bytes to Read field
+        send_block[send_cnt] = nu_bytes_read;
+        docrc16(send_block[send_cnt++]);
+    
+        // Form the CRC16
+        _crc16 = _crc16^0xFFFF;
+        send_block[send_cnt++] = (_crc16 & 0xFF);
+        send_block[send_cnt++] = ((_crc16 >> 8) & 0xFF);
+    
+        // Send Packet
+        bridge_result = send_packet(send_block, send_cnt, status);
+        if(bridge_result == DS28E17::Success)
+        {
+            ow_result = _owm.OWReadBlock(read_data, nu_bytes_read);
+            if(ow_result == OneWireMaster::Success)
+            {
+                bridge_result = DS28E17::Success;
+            }
+            else
+            {
+                bridge_result = DS28E17::CommsReadBlockError;
+            }
+        }
+    }
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::WriteConfigReg(uint8_t data)
+{
+    DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId);
+    
+    if(ow_result == OneWireMaster::Success)
+    {
+        // Send CMD and Data
+        uint8_t send_block[] = {CMD_WRITE_CONFIG_REG, data};
+        
+        ow_result = _owm.OWWriteBlock(send_block, 2);
+        if(ow_result == OneWireMaster::Success)
+        {
+            _i2c_speed = data & 0x03; // Save off _i2c_speed setting to be used by other functions
+            bridge_result = DS28E17::Success;
+        }
+        else
+        {
+            bridge_result = DS28E17::CommsWriteBlockError;
+        }
+    }
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::ReadConfigReg(uint8_t & config)
+{
+    DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId);
+    
+    if(ow_result == OneWireMaster::Success)
+    {
+        // Send CMD and receive Data
+        ow_result = _owm.OWWriteByte(CMD_READ_CONFIG_REG);
+        if(ow_result == OneWireMaster::Success)
+        {
+            ow_result = _owm.OWReadByte(config);
+            if(ow_result == OneWireMaster::Success)
+            {
+                bridge_result = DS28E17::Success;
+            }
+            else
+            {
+                bridge_result = DS28E17::CommsReadByteError;
+            }
+        }
+        else
+        {
+            bridge_result = DS28E17::CommsWriteByteError;
+        }
+    }
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::DisableOWMode()
+{
+    DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId);
+    
+    if(ow_result == OneWireMaster::Success)
+    {
+        // Send CMD
+        ow_result = _owm.OWWriteByte(CMD_DISABLE_OW_MODE);
+        if(ow_result == OneWireMaster::Success)
+        {
+            bridge_result = DS28E17::Success;
+        }
+        else
+        {
+            bridge_result = DS28E17::CommsWriteByteError;
+        }
+    }
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::EnableSleepMode()
+{
+    DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId);
+    
+    if(ow_result == OneWireMaster::Success)
+    {
+        // Send CMD
+        ow_result = _owm.OWWriteByte(CMD_ENABLE_SLEEP_MODE);
+        if(ow_result == OneWireMaster::Success)
+        {
+            bridge_result = DS28E17::Success;
+        }
+        else
+        {
+            bridge_result = DS28E17::CommsWriteByteError;
+        }
+    }
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::ReadDeviceRevision(uint8_t & rev)
+{
+    DS28E17::CmdResult bridge_result = DS28E17::OperationFailure;
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId);
+    
+    if(ow_result == OneWireMaster::Success)
+    {
+        // Send CMD and receive Data
+        ow_result = _owm.OWWriteByte(CMD_READ_DEVICE_REV);
+        if(ow_result == OneWireMaster::Success)
+        {
+            ow_result = _owm.OWReadByte(rev);
+            if(ow_result == OneWireMaster::Success)
+            {
+                bridge_result = DS28E17::Success;
+            }
+            else
+            {
+                bridge_result = DS28E17::CommsReadByteError;
+            }
+        }
+        else
+        {
+            bridge_result = DS28E17::CommsWriteByteError;
+        }
+    }
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+uint16_t DS28E17::docrc16(uint16_t data)
+{
+    data = ((data ^ (_crc16 & 0xff)) & 0xff);
+    _crc16 >>= 8;
+
+    if (DS28E17::_oddparity[data & 0xf] ^ DS28E17::_oddparity[data >> 4])
+    {
+        _crc16 ^= 0xc001;
+    }
+
+    data <<= 6;
+    _crc16  ^= data;
+    data <<= 1;
+    _crc16   ^= data;
+
+    return _crc16;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::send_packet(const uint8_t * data, uint8_t data_length,
+                                        uint8_t & status, uint8_t & wr_status)
+{
+    DS28E17::CmdResult bridge_result = DS28E17::CommsWriteBlockError;
+    uint32_t poll_count = 0;
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWWriteBlock(data, data_length);
+    
+    if(ow_result == OneWireMaster::Success) 
+    {
+        // Poll for Zero 1-Wire bit and return if an error occurs
+        uint8_t recvbit = 0x01;
+        do 
+        {
+            ow_result = _owm.OWReadBit(recvbit);
+        } 
+        while(recvbit && (poll_count++ < POLL_LIMIT) && (ow_result == OneWireMaster::Success));
+
+        if(ow_result == OneWireMaster::Success) 
+        {
+            if(poll_count < POLL_LIMIT) 
+            {
+                //Read Status and write status
+                uint8_t read_block[2];
+                
+                ow_result = _owm.OWReadBlock(read_block, 2);
+                
+                if(ow_result == OneWireMaster::Success) 
+                {
+                    status = read_block[0];
+                    wr_status = read_block[1];
+                    bridge_result = DS28E17::Success;
+                } 
+                else
+                {
+                   bridge_result = DS28E17::CommsReadBlockError;
+                }
+            } 
+            else 
+            {
+                bridge_result = DS28E17::TimeoutError;
+            }
+        } 
+        else 
+        {
+            bridge_result = DS28E17::CommsReadBitError;
+        }
+    } 
+    
+    return bridge_result;
+}
+
+
+//*********************************************************************
+DS28E17::CmdResult DS28E17::send_packet(const uint8_t * data, uint8_t data_length, 
+                                        uint8_t & status)
+{
+    DS28E17::CmdResult bridge_result = DS28E17::CommsWriteBlockError;
+    uint32_t poll_count = 0;
+    
+    OneWireMaster::CmdResult ow_result = _owm.OWWriteBlock(data, data_length);
+    
+    if(ow_result == OneWireMaster::Success) 
+    {
+        // Poll for Zero 1-Wire bit and return if an error occurs
+        uint8_t recvbit = 0x01;
+        do 
+        {
+            ow_result = _owm.OWReadBit(recvbit);
+        } 
+        while(recvbit && (poll_count++ < POLL_LIMIT) && (ow_result == OneWireMaster::Success));
+
+        if(ow_result == OneWireMaster::Success) 
+        {
+            if(poll_count < POLL_LIMIT) 
+            {
+                //Read Status 
+                ow_result = _owm.OWReadByte(status);
+                if(ow_result == OneWireMaster::Success) 
+                {
+                    bridge_result = DS28E17::Success;
+                } 
+                else
+                {
+                    bridge_result = DS28E17::CommsReadByteError;
+                }
+            } 
+            else 
+            {
+                bridge_result = DS28E17::TimeoutError;
+            }
+        } 
+        else 
+        {
+            bridge_result = DS28E17::CommsReadBitError;
+        }
+    } 
+    
+    return bridge_result;
+}
+