1-Wire® library for mbed. Complete 1-Wire library that supports our silicon masters along with a bit-bang master on the MAX32600MBED platform with one common interface for mbed. Slave support has also been included and more slaves will be added as time permits.
Dependents: MAXREFDES131_Qt_Demo MAX32630FTHR_iButton_uSD_Logger MAX32630FTHR_DS18B20_uSD_Logger MAXREFDES130_131_Demo ... more
Superseded by MaximInterface.
Diff: Masters/DS248x/DS2482EightChannel/DS2482EightChannel.cpp
- Revision:
- 92:aa40c49b8563
- Child:
- 104:3f48daed532b
diff -r e80108bc870a -r aa40c49b8563 Masters/DS248x/DS2482EightChannel/DS2482EightChannel.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Masters/DS248x/DS2482EightChannel/DS2482EightChannel.cpp Mon Jun 20 20:02:28 2016 +0000 @@ -0,0 +1,118 @@ +/********************************************************************** +* 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 "OneWire/Masters/DS248x/DS2482EightChannel/DS2482EightChannel.h" + +using OneWire::OneWireMaster; +using OneWire::DS2482EightChannel; + + +//********************************************************************* +DS2482EightChannel::DS2482EightChannel(mbed::I2C & i2c_bus, uint8_t adrs) +:DS248x(i2c_bus, adrs) +{ +} + + +//********************************************************************* +DS2482EightChannel::DS2482EightChannel(mbed::I2C & i2c_bus, I2CAddress adrs) +:DS248x(i2c_bus, adrs) +{ +} + + +//********************************************************************* +OneWireMaster::CmdResult DS2482EightChannel::selectChannel(uint8_t channel) +{ + OneWireMaster::CmdResult result; + uint8_t ch, ch_read; + + // Channel Select (Case A) + // S AD,0 [A] CHSL [A] CC [A] Sr AD,1 [A] [RR] A\ P + // [] indicates from slave + // CC channel value + // RR channel read back + + switch (channel) + { + default: + case 0: + ch = 0xF0; + ch_read = 0xB8; + break; + case 1: + ch = 0xE1; + ch_read = 0xB1; + break; + case 2: + ch = 0xD2; + ch_read = 0xAA; + break; + case 3: + ch = 0xC3; + ch_read = 0xA3; + break; + case 4: + ch = 0xB4; + ch_read = 0x9C; + break; + case 5: + ch = 0xA5; + ch_read = 0x95; + break; + case 6: + ch = 0x96; + ch_read = 0x8E; + break; + case 7: + ch = 0x87; + ch_read = 0x87; + break; + }; + + result = sendCommand(ChannelSelectCmd, ch); + if (result == OneWireMaster::Success) + { + result = readRegister(ChannelSelectReg, ch, true); + if (result == OneWireMaster::Success) + { + // check for failure due to incorrect read back of channel + if (ch != ch_read) + { + result = OneWireMaster::OperationFailure; + } + } + } + + return result; +}