Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
OneWire_Masters/OneWireMaster.h@26:a361e3f42ba5, 2016-03-23 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Wed Mar 23 15:25:40 2016 -0500
- Revision:
- 26:a361e3f42ba5
- Parent:
- 24:8942d8478d68
- Child:
- 27:d5aaefa252f1
Rework the OneWireMaster virtual interface for simplicity.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
j3 | 5:ce108eeb878d | 1 | /******************************************************************//** |
j3 | 5:ce108eeb878d | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
j3 | 5:ce108eeb878d | 3 | * |
j3 | 5:ce108eeb878d | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
j3 | 5:ce108eeb878d | 5 | * copy of this software and associated documentation files (the "Software"), |
j3 | 5:ce108eeb878d | 6 | * to deal in the Software without restriction, including without limitation |
j3 | 5:ce108eeb878d | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
j3 | 5:ce108eeb878d | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
j3 | 5:ce108eeb878d | 9 | * Software is furnished to do so, subject to the following conditions: |
j3 | 5:ce108eeb878d | 10 | * |
j3 | 5:ce108eeb878d | 11 | * The above copyright notice and this permission notice shall be included |
j3 | 5:ce108eeb878d | 12 | * in all copies or substantial portions of the Software. |
j3 | 5:ce108eeb878d | 13 | * |
j3 | 5:ce108eeb878d | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
j3 | 5:ce108eeb878d | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
j3 | 5:ce108eeb878d | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
j3 | 5:ce108eeb878d | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
j3 | 5:ce108eeb878d | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
j3 | 5:ce108eeb878d | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
j3 | 5:ce108eeb878d | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
j3 | 5:ce108eeb878d | 21 | * |
j3 | 5:ce108eeb878d | 22 | * Except as contained in this notice, the name of Maxim Integrated |
j3 | 5:ce108eeb878d | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
j3 | 5:ce108eeb878d | 24 | * Products, Inc. Branding Policy. |
j3 | 5:ce108eeb878d | 25 | * |
j3 | 5:ce108eeb878d | 26 | * The mere transfer of this software does not imply any licenses |
j3 | 5:ce108eeb878d | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
j3 | 5:ce108eeb878d | 28 | * trademarks, maskwork rights, or any other form of intellectual |
j3 | 5:ce108eeb878d | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
j3 | 5:ce108eeb878d | 30 | * ownership rights. |
j3 | 5:ce108eeb878d | 31 | **********************************************************************/ |
j3 | 5:ce108eeb878d | 32 | |
j3 | 5:ce108eeb878d | 33 | |
j3 | 15:f6cb0d906fb6 | 34 | #ifndef ONEWIREMASTER_H |
j3 | 15:f6cb0d906fb6 | 35 | #define ONEWIREMASTER_H |
j3 | 5:ce108eeb878d | 36 | |
j3 | 5:ce108eeb878d | 37 | |
j3 | 5:ce108eeb878d | 38 | #include "mbed.h" |
j3 | 23:e8e403d61359 | 39 | #include "RomId.hpp" |
j3 | 5:ce108eeb878d | 40 | |
j3 | 5:ce108eeb878d | 41 | |
j3 | 23:e8e403d61359 | 42 | class OneWireMaster |
j3 | 15:f6cb0d906fb6 | 43 | { |
IanBenzMaxim | 24:8942d8478d68 | 44 | public: |
j3 | 23:e8e403d61359 | 45 | |
j3 | 23:e8e403d61359 | 46 | enum OW_SPEED |
j3 | 23:e8e403d61359 | 47 | { |
j3 | 23:e8e403d61359 | 48 | SPEED_STANDARD = 0x00, |
j3 | 23:e8e403d61359 | 49 | SPEED_OVERDRIVE = 0x01 |
j3 | 23:e8e403d61359 | 50 | }; |
j3 | 23:e8e403d61359 | 51 | |
j3 | 23:e8e403d61359 | 52 | enum OW_LEVEL |
j3 | 23:e8e403d61359 | 53 | { |
j3 | 23:e8e403d61359 | 54 | LEVEL_NORMAL = 0x00, |
j3 | 23:e8e403d61359 | 55 | LEVEL_STRONG = 0x02 |
j3 | 23:e8e403d61359 | 56 | }; |
j3 | 23:e8e403d61359 | 57 | |
j3 | 23:e8e403d61359 | 58 | enum CmdResult |
j3 | 23:e8e403d61359 | 59 | { |
j3 | 23:e8e403d61359 | 60 | Success, |
j3 | 23:e8e403d61359 | 61 | CommunicationWriteError, |
j3 | 23:e8e403d61359 | 62 | CommunicationReadError, |
j3 | 23:e8e403d61359 | 63 | TimeoutError, |
j3 | 23:e8e403d61359 | 64 | OperationFailure |
j3 | 23:e8e403d61359 | 65 | }; |
j3 | 23:e8e403d61359 | 66 | |
j3 | 17:b646b1e3970b | 67 | static uint16_t calculateCRC16(uint16_t CRC16, uint16_t data); |
j3 | 17:b646b1e3970b | 68 | |
IanBenzMaxim | 21:00c94aeb533e | 69 | static uint16_t calculateCRC16(const uint8_t * data, size_t data_offset, size_t data_len, uint16_t crc = 0); |
j3 | 17:b646b1e3970b | 70 | |
IanBenzMaxim | 26:a361e3f42ba5 | 71 | virtual ~OneWireMaster() { } |
IanBenzMaxim | 26:a361e3f42ba5 | 72 | |
j3 | 23:e8e403d61359 | 73 | |
j3 | 23:e8e403d61359 | 74 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 75 | * @brief OWInitMaster() |
j3 | 23:e8e403d61359 | 76 | * |
j3 | 23:e8e403d61359 | 77 | * @details Initiializes particular master being instaniated. |
j3 | 23:e8e403d61359 | 78 | * Added to interface to provide a common 'init' function between |
j3 | 23:e8e403d61359 | 79 | * all masters |
j3 | 23:e8e403d61359 | 80 | * |
j3 | 23:e8e403d61359 | 81 | * On Entry: |
j3 | 23:e8e403d61359 | 82 | * |
j3 | 23:e8e403d61359 | 83 | * On Exit: |
j3 | 23:e8e403d61359 | 84 | * |
j3 | 23:e8e403d61359 | 85 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 86 | **************************************************************/ |
j3 | 23:e8e403d61359 | 87 | virtual CmdResult OWInitMaster(void) = 0; |
j3 | 23:e8e403d61359 | 88 | |
j3 | 23:e8e403d61359 | 89 | |
j3 | 23:e8e403d61359 | 90 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 91 | * @brief OWReset() |
j3 | 23:e8e403d61359 | 92 | * |
j3 | 23:e8e403d61359 | 93 | * @details Reset all of the devices on the 1-Wire Net and return |
j3 | 23:e8e403d61359 | 94 | * the result. |
j3 | 23:e8e403d61359 | 95 | * |
j3 | 23:e8e403d61359 | 96 | * On Entry: |
j3 | 23:e8e403d61359 | 97 | * |
j3 | 23:e8e403d61359 | 98 | * On Exit: |
j3 | 23:e8e403d61359 | 99 | * |
j3 | 23:e8e403d61359 | 100 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 101 | **************************************************************/ |
j3 | 23:e8e403d61359 | 102 | virtual CmdResult OWReset(void) = 0; |
j3 | 23:e8e403d61359 | 103 | |
j3 | 23:e8e403d61359 | 104 | |
j3 | 23:e8e403d61359 | 105 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 106 | * @brief OWTouchBit() |
j3 | 23:e8e403d61359 | 107 | * |
j3 | 23:e8e403d61359 | 108 | * @details Send 1 bit of communication to the 1-Wire Net and return |
j3 | 23:e8e403d61359 | 109 | * the result 1 bit read from the 1-Wire Net. The |
j3 | 23:e8e403d61359 | 110 | * parameter 'sendbit' least significant bit is used and |
j3 | 23:e8e403d61359 | 111 | * the least significant bit of the result is the return |
j3 | 23:e8e403d61359 | 112 | * bit. |
j3 | 23:e8e403d61359 | 113 | * |
j3 | 23:e8e403d61359 | 114 | * On Entry: |
j3 | 23:e8e403d61359 | 115 | * @param[in] 'sendbit' - the least significant bit is the bit to send |
j3 | 23:e8e403d61359 | 116 | * |
j3 | 23:e8e403d61359 | 117 | * On Exit: |
j3 | 23:e8e403d61359 | 118 | * |
j3 | 23:e8e403d61359 | 119 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 120 | **************************************************************/ |
IanBenzMaxim | 26:a361e3f42ba5 | 121 | virtual CmdResult OWTouchBit(uint8_t & sendrecvbit, OW_LEVEL after_level) = 0; |
j3 | 23:e8e403d61359 | 122 | |
j3 | 23:e8e403d61359 | 123 | |
j3 | 23:e8e403d61359 | 124 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 125 | * @brief OWWRiteByte() |
j3 | 23:e8e403d61359 | 126 | * |
j3 | 23:e8e403d61359 | 127 | * @details Send 8 bits of communication to the 1-Wire Net and |
j3 | 23:e8e403d61359 | 128 | * verify that the 8 bits read from the 1-Wire Net is the |
j3 | 23:e8e403d61359 | 129 | * same (write operation).The parameter 'sendbyte' least |
j3 | 23:e8e403d61359 | 130 | * significant 8 bits are used. |
j3 | 23:e8e403d61359 | 131 | * |
j3 | 23:e8e403d61359 | 132 | * On Entry: |
j3 | 23:e8e403d61359 | 133 | * @param[in] 'sendbyte' - 8 bits to send (least significant byte) |
j3 | 23:e8e403d61359 | 134 | * |
j3 | 23:e8e403d61359 | 135 | * On Exit: |
j3 | 23:e8e403d61359 | 136 | * |
j3 | 23:e8e403d61359 | 137 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 138 | **************************************************************/ |
IanBenzMaxim | 26:a361e3f42ba5 | 139 | virtual CmdResult OWWriteByte(uint8_t sendbyte, OW_LEVEL after_level) = 0; |
j3 | 23:e8e403d61359 | 140 | |
j3 | 23:e8e403d61359 | 141 | |
j3 | 23:e8e403d61359 | 142 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 143 | * @brief OWReadByte() |
j3 | 23:e8e403d61359 | 144 | * |
j3 | 23:e8e403d61359 | 145 | * @details Send 8 bits of read communication to the 1-Wire Net |
j3 | 23:e8e403d61359 | 146 | * and return the result 8 bits read from the 1-Wire Net. |
j3 | 23:e8e403d61359 | 147 | * |
j3 | 23:e8e403d61359 | 148 | * On Entry: |
j3 | 23:e8e403d61359 | 149 | * |
j3 | 23:e8e403d61359 | 150 | * On Exit: |
j3 | 23:e8e403d61359 | 151 | * |
j3 | 23:e8e403d61359 | 152 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 153 | **************************************************************/ |
IanBenzMaxim | 26:a361e3f42ba5 | 154 | virtual CmdResult OWReadByte(uint8_t & recvbyte, OW_LEVEL after_level) = 0; |
j3 | 23:e8e403d61359 | 155 | |
j3 | 23:e8e403d61359 | 156 | |
j3 | 23:e8e403d61359 | 157 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 158 | * @brief OWWriteBlock() |
j3 | 23:e8e403d61359 | 159 | * |
j3 | 23:e8e403d61359 | 160 | * @details complements OWBlock, writes 'tran_len' bytes from |
j3 | 23:e8e403d61359 | 161 | * 'tran_buf' to 1-wire Net. |
j3 | 23:e8e403d61359 | 162 | * |
j3 | 23:e8e403d61359 | 163 | * On Entry: |
j3 | 23:e8e403d61359 | 164 | * @param[in] tran_buf - pointer to data to write |
j3 | 23:e8e403d61359 | 165 | * @param[in] tran_len - number of bytes to write |
j3 | 23:e8e403d61359 | 166 | * |
j3 | 23:e8e403d61359 | 167 | * On Exit: |
j3 | 23:e8e403d61359 | 168 | * |
j3 | 23:e8e403d61359 | 169 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 170 | **************************************************************/ |
j3 | 23:e8e403d61359 | 171 | virtual CmdResult OWWriteBlock(const uint8_t *tran_buf, uint8_t tran_len) = 0; |
j3 | 23:e8e403d61359 | 172 | |
j3 | 15:f6cb0d906fb6 | 173 | |
j3 | 23:e8e403d61359 | 174 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 175 | * @brief OWReadBlock() |
j3 | 23:e8e403d61359 | 176 | * |
j3 | 23:e8e403d61359 | 177 | * @details complements OWBlock, reads 'recv_len' bytes from |
j3 | 23:e8e403d61359 | 178 | * 1-wire Net and puts them in 'recv_buf'. |
j3 | 23:e8e403d61359 | 179 | * |
j3 | 23:e8e403d61359 | 180 | * On Entry: |
j3 | 23:e8e403d61359 | 181 | * @param[in] recv_buf - pointer to receive buffer |
j3 | 23:e8e403d61359 | 182 | * @param[in] recv_len - number of bytes to read |
j3 | 23:e8e403d61359 | 183 | * |
j3 | 23:e8e403d61359 | 184 | * On Exit: |
j3 | 23:e8e403d61359 | 185 | * |
j3 | 23:e8e403d61359 | 186 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 187 | **************************************************************/ |
j3 | 23:e8e403d61359 | 188 | virtual CmdResult OWReadBlock(uint8_t *rx_buf, uint8_t rx_len) = 0; |
j3 | 23:e8e403d61359 | 189 | |
j3 | 23:e8e403d61359 | 190 | |
j3 | 23:e8e403d61359 | 191 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 192 | * @brief OWSearch() |
j3 | 23:e8e403d61359 | 193 | * |
j3 | 23:e8e403d61359 | 194 | * @details The 'OWSearch' function does a general search. This |
j3 | 23:e8e403d61359 | 195 | * function continues from the previous search state. The |
j3 | 23:e8e403d61359 | 196 | * search state can be reset by using the 'OWFirst' |
j3 | 23:e8e403d61359 | 197 | * function. This function contains one parameter |
j3 | 23:e8e403d61359 | 198 | * 'alarm_only'. When 'alarm_only' is TRUE (1) the find |
j3 | 23:e8e403d61359 | 199 | * alarm command 0xEC is sent instead of the normal search |
j3 | 23:e8e403d61359 | 200 | * command 0xF0. Using the find alarm command 0xEC will |
j3 | 23:e8e403d61359 | 201 | * limit the search to only 1-Wire devices that are in an |
j3 | 23:e8e403d61359 | 202 | * 'alarm' state. |
j3 | 23:e8e403d61359 | 203 | * |
j3 | 23:e8e403d61359 | 204 | * On Entry: |
j3 | 23:e8e403d61359 | 205 | * |
j3 | 23:e8e403d61359 | 206 | * On Exit: |
j3 | 23:e8e403d61359 | 207 | * |
j3 | 23:e8e403d61359 | 208 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 209 | **************************************************************/ |
j3 | 23:e8e403d61359 | 210 | virtual CmdResult OWSearch(RomId & romId) = 0; |
j3 | 23:e8e403d61359 | 211 | |
j3 | 23:e8e403d61359 | 212 | |
j3 | 23:e8e403d61359 | 213 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 214 | * @brief OWSpeed() |
j3 | 23:e8e403d61359 | 215 | * |
j3 | 23:e8e403d61359 | 216 | * @details Set the 1-Wire Net communication speed. |
j3 | 23:e8e403d61359 | 217 | * |
j3 | 23:e8e403d61359 | 218 | * On Entry: |
j3 | 23:e8e403d61359 | 219 | * @param[in] 'new_speed' - new speed defined as |
j3 | 23:e8e403d61359 | 220 | * MODE_STANDARD 0x00 |
j3 | 23:e8e403d61359 | 221 | * MODE_OVERDRIVE 0x01 |
j3 | 23:e8e403d61359 | 222 | * |
j3 | 23:e8e403d61359 | 223 | * On Exit: |
j3 | 23:e8e403d61359 | 224 | * |
j3 | 23:e8e403d61359 | 225 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 226 | **************************************************************/ |
j3 | 23:e8e403d61359 | 227 | virtual CmdResult OWSpeed(OW_SPEED new_speed) = 0; |
j3 | 15:f6cb0d906fb6 | 228 | |
j3 | 23:e8e403d61359 | 229 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 230 | * @brief OWLevel() |
j3 | 23:e8e403d61359 | 231 | * |
j3 | 23:e8e403d61359 | 232 | * @details Set the 1-Wire Net line level pull-up to normal. The |
j3 | 23:e8e403d61359 | 233 | * ds2484 does only allows enabling strong pull-up on a |
j3 | 23:e8e403d61359 | 234 | * bit or byte event. Consequently this function only |
j3 | 23:e8e403d61359 | 235 | * allows the MODE_STANDARD argument. To enable strong |
j3 | 23:e8e403d61359 | 236 | * pull-up use OWWriteBytePower or OWReadBitPower. |
j3 | 23:e8e403d61359 | 237 | * |
j3 | 23:e8e403d61359 | 238 | * On Entry: |
j3 | 23:e8e403d61359 | 239 | * @param[in] 'new_level' - new level defined as |
j3 | 23:e8e403d61359 | 240 | * MODE_STANDARD 0x00 |
j3 | 23:e8e403d61359 | 241 | * |
j3 | 23:e8e403d61359 | 242 | * On Exit: |
j3 | 23:e8e403d61359 | 243 | * |
j3 | 23:e8e403d61359 | 244 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 245 | **************************************************************/ |
j3 | 23:e8e403d61359 | 246 | virtual CmdResult OWLevel(OW_LEVEL new_level) = 0; |
j3 | 23:e8e403d61359 | 247 | |
IanBenzMaxim | 26:a361e3f42ba5 | 248 | CmdResult OWWriteBit(uint8_t sendbit, OW_LEVEL after_level) { return OWTouchBit(sendbit, after_level); } |
IanBenzMaxim | 26:a361e3f42ba5 | 249 | CmdResult OWReadBit(uint8_t & recvbit, OW_LEVEL after_level) { recvbit = 0x01; return OWTouchBit(recvbit, after_level); } |
j3 | 23:e8e403d61359 | 250 | |
IanBenzMaxim | 26:a361e3f42ba5 | 251 | CmdResult OWWriteBit(uint8_t sendbit) { return OWWriteBit(sendbit, LEVEL_NORMAL); } |
IanBenzMaxim | 26:a361e3f42ba5 | 252 | CmdResult OWReadBit(uint8_t & recvbit) { return OWReadBit(recvbit, LEVEL_NORMAL); } |
IanBenzMaxim | 26:a361e3f42ba5 | 253 | CmdResult OWWriteBitPower(uint8_t sendbit) { return OWWriteBit(sendbit, LEVEL_STRONG); } |
IanBenzMaxim | 26:a361e3f42ba5 | 254 | CmdResult OWReadBitPower(uint8_t & recvbit) { return OWReadBit(recvbit, LEVEL_STRONG); } |
IanBenzMaxim | 26:a361e3f42ba5 | 255 | CmdResult OWWriteByte(uint8_t sendbyte) { return OWWriteByte(sendbyte, LEVEL_NORMAL); } |
IanBenzMaxim | 26:a361e3f42ba5 | 256 | CmdResult OWReadByte(uint8_t & recvbyte) { return OWReadByte(recvbyte, LEVEL_NORMAL); } |
IanBenzMaxim | 26:a361e3f42ba5 | 257 | CmdResult OWWriteBytePower(uint8_t sendbyte) { return OWWriteByte(sendbyte, LEVEL_STRONG); } |
IanBenzMaxim | 26:a361e3f42ba5 | 258 | CmdResult OWReadBytePower(uint8_t & recvbyte) { return OWReadByte(recvbyte, LEVEL_STRONG); } |
j3 | 23:e8e403d61359 | 259 | |
j3 | 23:e8e403d61359 | 260 | |
j3 | 23:e8e403d61359 | 261 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 262 | * @brief OWFirst() |
j3 | 23:e8e403d61359 | 263 | * |
j3 | 23:e8e403d61359 | 264 | * @details Find the 'first' devices on the 1-Wire network |
j3 | 23:e8e403d61359 | 265 | * |
j3 | 23:e8e403d61359 | 266 | * On Entry: |
j3 | 23:e8e403d61359 | 267 | * |
j3 | 23:e8e403d61359 | 268 | * On Exit: |
j3 | 23:e8e403d61359 | 269 | * |
j3 | 23:e8e403d61359 | 270 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 271 | **************************************************************/ |
IanBenzMaxim | 24:8942d8478d68 | 272 | CmdResult OWFirst(RomId & romId); |
j3 | 23:e8e403d61359 | 273 | |
j3 | 23:e8e403d61359 | 274 | |
j3 | 23:e8e403d61359 | 275 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 276 | * @brief OWNext() |
j3 | 23:e8e403d61359 | 277 | * |
j3 | 23:e8e403d61359 | 278 | * @details Find the 'next' devices on the 1-Wire network |
j3 | 23:e8e403d61359 | 279 | * |
j3 | 23:e8e403d61359 | 280 | * On Entry: |
j3 | 23:e8e403d61359 | 281 | * |
j3 | 23:e8e403d61359 | 282 | * On Exit: |
j3 | 23:e8e403d61359 | 283 | * |
j3 | 23:e8e403d61359 | 284 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 285 | **************************************************************/ |
IanBenzMaxim | 24:8942d8478d68 | 286 | CmdResult OWNext(RomId & romId); |
j3 | 23:e8e403d61359 | 287 | |
j3 | 23:e8e403d61359 | 288 | |
j3 | 23:e8e403d61359 | 289 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 290 | * @brief OWVerify() |
j3 | 23:e8e403d61359 | 291 | * |
j3 | 23:e8e403d61359 | 292 | * @details Verify the device with the ROM number in ROM_NO buffer |
j3 | 23:e8e403d61359 | 293 | * is present. |
j3 | 23:e8e403d61359 | 294 | * |
j3 | 23:e8e403d61359 | 295 | * On Entry: |
j3 | 23:e8e403d61359 | 296 | * |
j3 | 23:e8e403d61359 | 297 | * On Exit: |
j3 | 23:e8e403d61359 | 298 | * |
j3 | 23:e8e403d61359 | 299 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 300 | **************************************************************/ |
IanBenzMaxim | 24:8942d8478d68 | 301 | CmdResult OWVerify(const RomId & romId); |
j3 | 23:e8e403d61359 | 302 | |
j3 | 23:e8e403d61359 | 303 | |
j3 | 23:e8e403d61359 | 304 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 305 | * @brief OWTargetSetup() |
j3 | 23:e8e403d61359 | 306 | * |
j3 | 23:e8e403d61359 | 307 | * @details Setup the search to find the device type 'family_code' |
j3 | 23:e8e403d61359 | 308 | * on the next call to OWNext() if it is present. |
j3 | 23:e8e403d61359 | 309 | * |
j3 | 23:e8e403d61359 | 310 | * On Entry: |
j3 | 23:e8e403d61359 | 311 | * @param[in] family_code - family code of device |
j3 | 23:e8e403d61359 | 312 | * |
j3 | 23:e8e403d61359 | 313 | * On Exit: |
j3 | 23:e8e403d61359 | 314 | * |
j3 | 23:e8e403d61359 | 315 | * @return |
j3 | 23:e8e403d61359 | 316 | **************************************************************/ |
IanBenzMaxim | 24:8942d8478d68 | 317 | void OWTargetSetup(RomId & romId); |
j3 | 23:e8e403d61359 | 318 | |
j3 | 23:e8e403d61359 | 319 | |
j3 | 23:e8e403d61359 | 320 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 321 | * @brief OWFamilySkipSetup() |
j3 | 23:e8e403d61359 | 322 | * |
j3 | 23:e8e403d61359 | 323 | * @details Setup the search to skip the current device type on the |
j3 | 23:e8e403d61359 | 324 | * next call to OWNext(). |
j3 | 23:e8e403d61359 | 325 | * |
j3 | 23:e8e403d61359 | 326 | * On Entry: |
j3 | 23:e8e403d61359 | 327 | * |
j3 | 23:e8e403d61359 | 328 | * On Exit: |
j3 | 23:e8e403d61359 | 329 | * |
j3 | 23:e8e403d61359 | 330 | * @return |
j3 | 23:e8e403d61359 | 331 | **************************************************************/ |
IanBenzMaxim | 24:8942d8478d68 | 332 | void OWFamilySkipSetup(void); |
j3 | 15:f6cb0d906fb6 | 333 | |
j3 | 23:e8e403d61359 | 334 | |
j3 | 23:e8e403d61359 | 335 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 336 | * @brief OWReadROM() |
j3 | 23:e8e403d61359 | 337 | * |
j3 | 23:e8e403d61359 | 338 | * @details Only use this command with a single drop bus, data |
j3 | 23:e8e403d61359 | 339 | * collisions will occur if more than 1 device on bus. |
j3 | 23:e8e403d61359 | 340 | * Issues READ_ROM command, slave device will respond with ROM ID. |
j3 | 23:e8e403d61359 | 341 | * |
j3 | 23:e8e403d61359 | 342 | * On Entry: |
j3 | 23:e8e403d61359 | 343 | * |
j3 | 23:e8e403d61359 | 344 | * On Exit: |
j3 | 23:e8e403d61359 | 345 | * |
j3 | 23:e8e403d61359 | 346 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 347 | **************************************************************/ |
IanBenzMaxim | 24:8942d8478d68 | 348 | CmdResult OWReadROM(RomId & romId); |
j3 | 23:e8e403d61359 | 349 | |
j3 | 15:f6cb0d906fb6 | 350 | |
j3 | 23:e8e403d61359 | 351 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 352 | * @brief OWSkipROM() |
j3 | 23:e8e403d61359 | 353 | * |
j3 | 23:e8e403d61359 | 354 | * @details Issue SKIP_ROM command on 1-wire bus |
j3 | 23:e8e403d61359 | 355 | * |
j3 | 23:e8e403d61359 | 356 | * On Entry: |
j3 | 23:e8e403d61359 | 357 | * |
j3 | 23:e8e403d61359 | 358 | * On Exit: |
j3 | 23:e8e403d61359 | 359 | * |
j3 | 23:e8e403d61359 | 360 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 361 | **************************************************************/ |
IanBenzMaxim | 24:8942d8478d68 | 362 | CmdResult OWSkipROM(void); |
j3 | 23:e8e403d61359 | 363 | |
j3 | 15:f6cb0d906fb6 | 364 | |
j3 | 23:e8e403d61359 | 365 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 366 | * @brief OWMatchROM() |
j3 | 23:e8e403d61359 | 367 | * |
j3 | 23:e8e403d61359 | 368 | * @details Issues MATCH_ROM command on 1-wire bus and then sends |
j3 | 23:e8e403d61359 | 369 | * the rom id in _rom_number |
j3 | 23:e8e403d61359 | 370 | * |
j3 | 23:e8e403d61359 | 371 | * On Entry: |
j3 | 23:e8e403d61359 | 372 | * |
j3 | 23:e8e403d61359 | 373 | * On Exit: |
j3 | 23:e8e403d61359 | 374 | * |
j3 | 23:e8e403d61359 | 375 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 376 | **************************************************************/ |
IanBenzMaxim | 24:8942d8478d68 | 377 | CmdResult OWMatchROM(const RomId & romId); |
j3 | 23:e8e403d61359 | 378 | |
j3 | 15:f6cb0d906fb6 | 379 | |
j3 | 23:e8e403d61359 | 380 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 381 | * @brief OWOverdriveSkipROM() |
j3 | 23:e8e403d61359 | 382 | * |
j3 | 23:e8e403d61359 | 383 | * @details Issues OVERDRIVE_SKIP rom command. DS248X OW speed |
j3 | 23:e8e403d61359 | 384 | * is set to SPEED_OVERDRIVE |
j3 | 23:e8e403d61359 | 385 | * |
j3 | 23:e8e403d61359 | 386 | * On Entry: |
j3 | 23:e8e403d61359 | 387 | * |
j3 | 23:e8e403d61359 | 388 | * On Exit: |
j3 | 23:e8e403d61359 | 389 | * |
j3 | 23:e8e403d61359 | 390 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 391 | **************************************************************/ |
IanBenzMaxim | 24:8942d8478d68 | 392 | CmdResult OWOverdriveSkipROM(void); |
j3 | 15:f6cb0d906fb6 | 393 | |
j3 | 15:f6cb0d906fb6 | 394 | |
j3 | 23:e8e403d61359 | 395 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 396 | * @brief OWOverdriveMatchROM() |
j3 | 23:e8e403d61359 | 397 | * |
j3 | 23:e8e403d61359 | 398 | * @details Issues OVERDRIVE_MATCH rom command. DS248X OW speed |
j3 | 23:e8e403d61359 | 399 | * is set to SPEED_OVERDRIVE |
j3 | 23:e8e403d61359 | 400 | * |
j3 | 23:e8e403d61359 | 401 | * On Entry: |
j3 | 23:e8e403d61359 | 402 | * |
j3 | 23:e8e403d61359 | 403 | * On Exit: |
j3 | 23:e8e403d61359 | 404 | * |
j3 | 23:e8e403d61359 | 405 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 406 | **************************************************************/ |
IanBenzMaxim | 24:8942d8478d68 | 407 | CmdResult OWOverdriveMatchROM(const RomId & romId); |
j3 | 23:e8e403d61359 | 408 | |
j3 | 15:f6cb0d906fb6 | 409 | |
j3 | 23:e8e403d61359 | 410 | /**********************************************************//** |
j3 | 23:e8e403d61359 | 411 | * @brief OWResume() |
j3 | 23:e8e403d61359 | 412 | * |
j3 | 23:e8e403d61359 | 413 | * @details Issues RESUME command, very usefull. Is like skip |
j3 | 23:e8e403d61359 | 414 | * on a multidrop bus, however you must first select the device |
j3 | 23:e8e403d61359 | 415 | * you want to interface with using a MATCH, or SEARCH. The |
j3 | 23:e8e403d61359 | 416 | * device stays selected until another device is selected, |
j3 | 23:e8e403d61359 | 417 | * see slave datasheet for detailed explanation. |
j3 | 23:e8e403d61359 | 418 | * |
j3 | 23:e8e403d61359 | 419 | * On Entry: |
j3 | 23:e8e403d61359 | 420 | * |
j3 | 23:e8e403d61359 | 421 | * On Exit: |
j3 | 23:e8e403d61359 | 422 | * |
j3 | 23:e8e403d61359 | 423 | * @return CmdResult - zero on success, non-zero on failure |
j3 | 23:e8e403d61359 | 424 | **************************************************************/ |
IanBenzMaxim | 24:8942d8478d68 | 425 | CmdResult OWResume(void); |
IanBenzMaxim | 21:00c94aeb533e | 426 | |
IanBenzMaxim | 24:8942d8478d68 | 427 | protected: |
IanBenzMaxim | 24:8942d8478d68 | 428 | |
IanBenzMaxim | 24:8942d8478d68 | 429 | enum OW_ROM_CMD |
IanBenzMaxim | 24:8942d8478d68 | 430 | { |
IanBenzMaxim | 24:8942d8478d68 | 431 | READ_ROM = 0x33, |
IanBenzMaxim | 24:8942d8478d68 | 432 | MATCH_ROM = 0x55, |
IanBenzMaxim | 24:8942d8478d68 | 433 | SEARCH_ROM = 0xF0, |
IanBenzMaxim | 24:8942d8478d68 | 434 | SKIP_ROM = 0xCC, |
IanBenzMaxim | 24:8942d8478d68 | 435 | RESUME = 0xA5, |
IanBenzMaxim | 24:8942d8478d68 | 436 | OVERDRIVE_SKIP_ROM = 0x3C, |
IanBenzMaxim | 24:8942d8478d68 | 437 | OVERDRIVE_MATCH_ROM = 0x69 |
IanBenzMaxim | 24:8942d8478d68 | 438 | }; |
j3 | 15:f6cb0d906fb6 | 439 | |
j3 | 15:f6cb0d906fb6 | 440 | // Search state |
j3 | 15:f6cb0d906fb6 | 441 | uint8_t _last_discrepancy; |
j3 | 15:f6cb0d906fb6 | 442 | uint8_t _last_family_discrepancy; |
IanBenzMaxim | 21:00c94aeb533e | 443 | bool _last_device_flag; |
IanBenzMaxim | 21:00c94aeb533e | 444 | |
IanBenzMaxim | 24:8942d8478d68 | 445 | private: |
j3 | 17:b646b1e3970b | 446 | |
j3 | 17:b646b1e3970b | 447 | static const uint16_t _oddparity[16]; |
j3 | 15:f6cb0d906fb6 | 448 | }; |
j3 | 15:f6cb0d906fb6 | 449 | |
j3 | 15:f6cb0d906fb6 | 450 | |
j3 | 15:f6cb0d906fb6 | 451 | |
j3 | 5:ce108eeb878d | 452 | |
j3 | 5:ce108eeb878d | 453 | |
j3 | 5:ce108eeb878d | 454 | #endif /*ONEWIREMASTERSSHARED_H*/ |