Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
Masters/DS2480B/DS2480B.h
- Committer:
- IanBenzMaxim
- Date:
- 2016-05-13
- Revision:
- 75:8b627804927c
- Parent:
- 74:23be10c32fa3
- Child:
- 76:84e6c4994e29
File content as of revision 75:8b627804927c:
/******************************************************************//** * 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. **********************************************************************/ #ifndef OneWire_Masters_DS2480B #define OneWire_Masters_DS2480B #include "PinNames.h" #include "Masters/OneWireMaster.h" namespace mbed { class Serial; } namespace OneWire { namespace Masters { class DS2480B : public OneWireMaster { public: enum Baud { Bps9600 = 0, Bps19200 = 2, Bps57600 = 4, Bps115200 = 6 }; /**********************************************************//** * @brief DS2480B constructor * * @details allows user to use existing Serial object * * On Entry: * @param[in] p_serial - pointer to existing serial object * * On Exit: * @return **************************************************************/ DS2480B(mbed::Serial &p_serial); /**********************************************************//** * @brief DS2480B constructor * * @details Object instantiates a new serial object with no * public access * * On Entry: * @param[in] tx - tx pin of uart to be used * @param[in] rx - rx pin of uart to be used * @param[in] baud - baudrate for uart * * On Exit: * @return **************************************************************/ DS2480B(PinName tx, PinName rx); /**********************************************************//** * @brief DS2480B destructor * * @details deletes serial object if owner * * On Entry: * * On Exit: * @return **************************************************************/ virtual ~DS2480B(); OneWireMaster::CmdResult DS2480B_ChangeBaud(Baud newBaud); virtual OneWireMaster::CmdResult OWInitMaster(); virtual OneWireMaster::CmdResult OWReset(); virtual OneWireMaster::CmdResult OWTouchBitSetLevel(uint8_t & sendRecvBit, OWLevel afterLevel); virtual OneWireMaster::CmdResult OWWriteByteSetLevel(uint8_t sendByte, OWLevel afterLevel); virtual OneWireMaster::CmdResult OWReadByteSetLevel(uint8_t & recvByte, OWLevel afterLevel); virtual OneWireMaster::CmdResult OWSetSpeed(OWSpeed newSpeed); virtual OneWireMaster::CmdResult OWSetLevel(OWLevel newLevel); private: void rx_callback(void); OneWireMaster::CmdResult DS2480B_Detect(void); OneWireMaster::CmdResult WriteCOM(uint32_t outlen, uint8_t *outbuf); OneWireMaster::CmdResult ReadCOM(uint32_t inlen, uint8_t *inbuf); void BreakCOM(void); void FlushCOM(void); void SetBaudCOM(uint8_t new_baud); int32_t bitacc(uint32_t op, uint32_t state, uint32_t loc, uint8_t *buf); mbed::Serial *_p_serial; bool _serial_owner; // DS2480B state OWLevel _ULevel; // 1-Wire level Baud _UBaud; // baud rate uint8_t _UMode; // command or data mode state uint8_t _USpeed; // 1-Wire communication speed static const size_t MAX_RX_BUFFER_LEN = 256; volatile struct ds2480b_circular_buff_s { uint8_t w_idx; uint8_t r_idx; uint8_t rx_bytes_available; bool wrap_error; uint8_t buff[MAX_RX_BUFFER_LEN]; }rx_buffer; }; } } #endif