Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
OneWire_Switches/DS2413/ds2413.cpp@54:08985bf69691, 2016-04-13 (annotated)
- Committer:
- j3
- Date:
- Wed Apr 13 20:31:41 2016 +0000
- Revision:
- 54:08985bf69691
- Parent:
- 23:e8e403d61359
- Child:
- 56:be69bd88a3e3
Updated expected status in DS2413 write pio fx
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
j3 | 19:6d4c039a2d8e | 1 | /******************************************************************//** |
j3 | 19:6d4c039a2d8e | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
j3 | 19:6d4c039a2d8e | 3 | * |
j3 | 19:6d4c039a2d8e | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
j3 | 19:6d4c039a2d8e | 5 | * copy of this software and associated documentation files (the "Software"), |
j3 | 19:6d4c039a2d8e | 6 | * to deal in the Software without restriction, including without limitation |
j3 | 19:6d4c039a2d8e | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
j3 | 19:6d4c039a2d8e | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
j3 | 19:6d4c039a2d8e | 9 | * Software is furnished to do so, subject to the following conditions: |
j3 | 19:6d4c039a2d8e | 10 | * |
j3 | 19:6d4c039a2d8e | 11 | * The above copyright notice and this permission notice shall be included |
j3 | 19:6d4c039a2d8e | 12 | * in all copies or substantial portions of the Software. |
j3 | 19:6d4c039a2d8e | 13 | * |
j3 | 19:6d4c039a2d8e | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
j3 | 19:6d4c039a2d8e | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
j3 | 19:6d4c039a2d8e | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
j3 | 19:6d4c039a2d8e | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
j3 | 19:6d4c039a2d8e | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
j3 | 19:6d4c039a2d8e | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
j3 | 19:6d4c039a2d8e | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
j3 | 19:6d4c039a2d8e | 21 | * |
j3 | 19:6d4c039a2d8e | 22 | * Except as contained in this notice, the name of Maxim Integrated |
j3 | 19:6d4c039a2d8e | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
j3 | 19:6d4c039a2d8e | 24 | * Products, Inc. Branding Policy. |
j3 | 19:6d4c039a2d8e | 25 | * |
j3 | 19:6d4c039a2d8e | 26 | * The mere transfer of this software does not imply any licenses |
j3 | 19:6d4c039a2d8e | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
j3 | 19:6d4c039a2d8e | 28 | * trademarks, maskwork rights, or any other form of intellectual |
j3 | 19:6d4c039a2d8e | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
j3 | 19:6d4c039a2d8e | 30 | * ownership rights. |
j3 | 19:6d4c039a2d8e | 31 | **********************************************************************/ |
j3 | 19:6d4c039a2d8e | 32 | |
j3 | 19:6d4c039a2d8e | 33 | |
j3 | 19:6d4c039a2d8e | 34 | #include "ds2413.h" |
j3 | 19:6d4c039a2d8e | 35 | |
j3 | 19:6d4c039a2d8e | 36 | |
j3 | 19:6d4c039a2d8e | 37 | //********************************************************************* |
j3 | 22:686273e55cdc | 38 | Ds2413::Ds2413(OneWireMaster &owm): _owm(owm) |
j3 | 19:6d4c039a2d8e | 39 | { |
j3 | 19:6d4c039a2d8e | 40 | } |
j3 | 19:6d4c039a2d8e | 41 | |
j3 | 19:6d4c039a2d8e | 42 | |
j3 | 19:6d4c039a2d8e | 43 | //********************************************************************* |
j3 | 19:6d4c039a2d8e | 44 | Ds2413::CmdResult Ds2413::pio_access_read_chA(RomId &romId, uint8_t & val) |
j3 | 19:6d4c039a2d8e | 45 | { |
j3 | 19:6d4c039a2d8e | 46 | Ds2413::CmdResult result = OpFailure; |
j3 | 19:6d4c039a2d8e | 47 | |
j3 | 19:6d4c039a2d8e | 48 | result = pio_access_read(romId, val); |
j3 | 19:6d4c039a2d8e | 49 | |
j3 | 19:6d4c039a2d8e | 50 | val = (val & 0x01); |
j3 | 19:6d4c039a2d8e | 51 | |
j3 | 19:6d4c039a2d8e | 52 | return result; |
j3 | 19:6d4c039a2d8e | 53 | } |
j3 | 19:6d4c039a2d8e | 54 | |
j3 | 19:6d4c039a2d8e | 55 | |
j3 | 19:6d4c039a2d8e | 56 | //********************************************************************* |
j3 | 19:6d4c039a2d8e | 57 | Ds2413::CmdResult Ds2413::pio_access_read_chB(RomId &romId, uint8_t & val) |
j3 | 19:6d4c039a2d8e | 58 | { |
j3 | 19:6d4c039a2d8e | 59 | Ds2413::CmdResult result = OpFailure; |
j3 | 19:6d4c039a2d8e | 60 | |
j3 | 19:6d4c039a2d8e | 61 | result = pio_access_read(romId, val); |
j3 | 19:6d4c039a2d8e | 62 | |
j3 | 19:6d4c039a2d8e | 63 | val = ((val >> 2) & 0x01); |
j3 | 19:6d4c039a2d8e | 64 | |
j3 | 19:6d4c039a2d8e | 65 | return result; |
j3 | 19:6d4c039a2d8e | 66 | } |
j3 | 19:6d4c039a2d8e | 67 | |
j3 | 19:6d4c039a2d8e | 68 | |
j3 | 19:6d4c039a2d8e | 69 | //********************************************************************* |
j3 | 19:6d4c039a2d8e | 70 | Ds2413::CmdResult Ds2413::pio_access_write_chA(RomId &romId, uint8_t val) |
j3 | 19:6d4c039a2d8e | 71 | { |
j3 | 19:6d4c039a2d8e | 72 | Ds2413::CmdResult result = OpFailure; |
j3 | 19:6d4c039a2d8e | 73 | |
j3 | 19:6d4c039a2d8e | 74 | uint8_t local_val = 0; |
j3 | 19:6d4c039a2d8e | 75 | |
j3 | 19:6d4c039a2d8e | 76 | //read current state of PIO |
j3 | 19:6d4c039a2d8e | 77 | result = pio_access_read(romId, local_val); |
j3 | 19:6d4c039a2d8e | 78 | |
j3 | 19:6d4c039a2d8e | 79 | if(result == Ds2413::Success) |
j3 | 19:6d4c039a2d8e | 80 | { |
j3 | 19:6d4c039a2d8e | 81 | //modify |
j3 | 19:6d4c039a2d8e | 82 | //current state of pioB OR |
j3 | 19:6d4c039a2d8e | 83 | //desired state of pioA OR |
j3 | 19:6d4c039a2d8e | 84 | //bits[7:2] should all be 1, per datasheet |
j3 | 54:08985bf69691 | 85 | val = (0xFC | (((local_val >> 1) & 0x02) | (0x01 & val))); |
j3 | 19:6d4c039a2d8e | 86 | |
j3 | 19:6d4c039a2d8e | 87 | //write, bit[1:0] new state of pio |
j3 | 19:6d4c039a2d8e | 88 | result = pio_access_write(romId, val); |
j3 | 19:6d4c039a2d8e | 89 | } |
j3 | 19:6d4c039a2d8e | 90 | |
j3 | 19:6d4c039a2d8e | 91 | return result; |
j3 | 19:6d4c039a2d8e | 92 | } |
j3 | 19:6d4c039a2d8e | 93 | |
j3 | 19:6d4c039a2d8e | 94 | |
j3 | 19:6d4c039a2d8e | 95 | //********************************************************************* |
j3 | 19:6d4c039a2d8e | 96 | Ds2413::CmdResult Ds2413::pio_access_write_chB(RomId &romId, uint8_t val) |
j3 | 19:6d4c039a2d8e | 97 | { |
j3 | 19:6d4c039a2d8e | 98 | Ds2413::CmdResult result = OpFailure; |
j3 | 19:6d4c039a2d8e | 99 | |
j3 | 19:6d4c039a2d8e | 100 | uint8_t local_val = 0; |
j3 | 19:6d4c039a2d8e | 101 | |
j3 | 19:6d4c039a2d8e | 102 | //read current state of PIO |
j3 | 19:6d4c039a2d8e | 103 | result = pio_access_read(romId, local_val); |
j3 | 19:6d4c039a2d8e | 104 | |
j3 | 19:6d4c039a2d8e | 105 | if(result == Ds2413::Success) |
j3 | 19:6d4c039a2d8e | 106 | { |
j3 | 19:6d4c039a2d8e | 107 | //modify |
j3 | 19:6d4c039a2d8e | 108 | //current state of pioA OR |
j3 | 19:6d4c039a2d8e | 109 | //desired state of pioB OR |
j3 | 19:6d4c039a2d8e | 110 | //bits[7:2] should all be 1, per datasheet |
j3 | 19:6d4c039a2d8e | 111 | val = (0xFC | ((local_val & 0x01) | (0x02 & (val << 1)))); |
j3 | 19:6d4c039a2d8e | 112 | |
j3 | 19:6d4c039a2d8e | 113 | //write, bit[1:0] new state of pio |
j3 | 19:6d4c039a2d8e | 114 | result = pio_access_write(romId, val); |
j3 | 19:6d4c039a2d8e | 115 | } |
j3 | 19:6d4c039a2d8e | 116 | |
j3 | 19:6d4c039a2d8e | 117 | return result; |
j3 | 19:6d4c039a2d8e | 118 | } |
j3 | 19:6d4c039a2d8e | 119 | |
j3 | 19:6d4c039a2d8e | 120 | |
j3 | 19:6d4c039a2d8e | 121 | //********************************************************************* |
j3 | 54:08985bf69691 | 122 | Ds2413::CmdResult Ds2413::pio_access_write_chAB(RomId &romId, uint8_t val) |
j3 | 54:08985bf69691 | 123 | { |
j3 | 54:08985bf69691 | 124 | return pio_access_write(romId, ((0x03 & val) | 0xFC)); |
j3 | 54:08985bf69691 | 125 | } |
j3 | 54:08985bf69691 | 126 | |
j3 | 54:08985bf69691 | 127 | |
j3 | 54:08985bf69691 | 128 | //********************************************************************* |
j3 | 19:6d4c039a2d8e | 129 | Ds2413::CmdResult Ds2413::pio_access_read(RomId &romId, uint8_t & val) |
j3 | 19:6d4c039a2d8e | 130 | { |
j3 | 19:6d4c039a2d8e | 131 | Ds2413::CmdResult result = Ds2413::OpFailure; |
j3 | 19:6d4c039a2d8e | 132 | |
j3 | 23:e8e403d61359 | 133 | OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId); |
j3 | 19:6d4c039a2d8e | 134 | |
j3 | 23:e8e403d61359 | 135 | if(ow_result == OneWireMaster::Success) |
j3 | 19:6d4c039a2d8e | 136 | { |
j3 | 19:6d4c039a2d8e | 137 | ow_result = _owm.OWWriteByte(Ds2413::PIO_ACCESS_READ); |
j3 | 19:6d4c039a2d8e | 138 | |
j3 | 23:e8e403d61359 | 139 | if(ow_result == OneWireMaster::Success) |
j3 | 19:6d4c039a2d8e | 140 | { |
j3 | 19:6d4c039a2d8e | 141 | ow_result = _owm.OWReadByte(val); |
j3 | 19:6d4c039a2d8e | 142 | |
j3 | 23:e8e403d61359 | 143 | if(ow_result == OneWireMaster::Success) |
j3 | 19:6d4c039a2d8e | 144 | { |
j3 | 19:6d4c039a2d8e | 145 | result = Ds2413::Success; |
j3 | 19:6d4c039a2d8e | 146 | } |
j3 | 19:6d4c039a2d8e | 147 | else |
j3 | 19:6d4c039a2d8e | 148 | { |
j3 | 19:6d4c039a2d8e | 149 | result = Ds2413::CommsReadError; |
j3 | 19:6d4c039a2d8e | 150 | } |
j3 | 19:6d4c039a2d8e | 151 | } |
j3 | 19:6d4c039a2d8e | 152 | else |
j3 | 19:6d4c039a2d8e | 153 | { |
j3 | 19:6d4c039a2d8e | 154 | result = Ds2413::CommsWriteError; |
j3 | 19:6d4c039a2d8e | 155 | } |
j3 | 19:6d4c039a2d8e | 156 | } |
j3 | 19:6d4c039a2d8e | 157 | |
j3 | 19:6d4c039a2d8e | 158 | return result; |
j3 | 19:6d4c039a2d8e | 159 | } |
j3 | 19:6d4c039a2d8e | 160 | |
j3 | 19:6d4c039a2d8e | 161 | |
j3 | 19:6d4c039a2d8e | 162 | //********************************************************************* |
j3 | 54:08985bf69691 | 163 | Ds2413::CmdResult Ds2413::pio_access_write(RomId & romId, uint8_t val) |
j3 | 19:6d4c039a2d8e | 164 | { |
j3 | 54:08985bf69691 | 165 | static uint32_t cnt = 0; |
j3 | 19:6d4c039a2d8e | 166 | Ds2413::CmdResult result = Ds2413::OpFailure; |
j3 | 19:6d4c039a2d8e | 167 | |
j3 | 23:e8e403d61359 | 168 | OneWireMaster::CmdResult ow_result = _owm.OWMatchROM(romId); |
j3 | 19:6d4c039a2d8e | 169 | |
j3 | 23:e8e403d61359 | 170 | if(ow_result == OneWireMaster::Success) |
j3 | 19:6d4c039a2d8e | 171 | { |
j3 | 19:6d4c039a2d8e | 172 | uint8_t send_block[] = {Ds2413::PIO_ACCESS_WRITE, val, ~val}; |
j3 | 19:6d4c039a2d8e | 173 | |
j3 | 19:6d4c039a2d8e | 174 | ow_result = _owm.OWWriteBlock(send_block, 3); |
j3 | 23:e8e403d61359 | 175 | if(ow_result == OneWireMaster::Success) |
j3 | 19:6d4c039a2d8e | 176 | { |
j3 | 19:6d4c039a2d8e | 177 | uint8_t expected_status = ((0x01 & val) | ((0x01 & val) << 1) | |
j3 | 19:6d4c039a2d8e | 178 | ((0x02 & val) << 1) | ((0x02 & val) << 2)); |
j3 | 54:08985bf69691 | 179 | //expected_status |= (~expected_status << 4); |
j3 | 19:6d4c039a2d8e | 180 | |
j3 | 19:6d4c039a2d8e | 181 | uint8_t rcv_block[2]; |
j3 | 19:6d4c039a2d8e | 182 | ow_result = _owm.OWReadBlock(rcv_block, 2); |
j3 | 19:6d4c039a2d8e | 183 | |
j3 | 23:e8e403d61359 | 184 | if(ow_result == OneWireMaster::Success) |
j3 | 19:6d4c039a2d8e | 185 | { |
j3 | 54:08985bf69691 | 186 | printf("\nEntry %d", ++cnt); |
j3 | 54:08985bf69691 | 187 | printf("\nval = 0x%2x", val); |
j3 | 54:08985bf69691 | 188 | printf("\nexpected status = 0x%2x", expected_status); |
j3 | 54:08985bf69691 | 189 | printf("\nrecv_block 0 = 0x%2x", rcv_block[0]); |
j3 | 54:08985bf69691 | 190 | printf("\nrecv_block 1 = 0x%2x\n", rcv_block[1]); |
j3 | 54:08985bf69691 | 191 | if((rcv_block[0] == 0xAA) && ((rcv_block[1] & 0x0F) == expected_status)) |
j3 | 19:6d4c039a2d8e | 192 | { |
j3 | 54:08985bf69691 | 193 | printf("\nExit %d\n", cnt); |
j3 | 19:6d4c039a2d8e | 194 | result = Ds2413::Success; |
j3 | 19:6d4c039a2d8e | 195 | } |
j3 | 19:6d4c039a2d8e | 196 | } |
j3 | 19:6d4c039a2d8e | 197 | else |
j3 | 19:6d4c039a2d8e | 198 | { |
j3 | 19:6d4c039a2d8e | 199 | result = Ds2413::CommsReadError; |
j3 | 19:6d4c039a2d8e | 200 | } |
j3 | 19:6d4c039a2d8e | 201 | } |
j3 | 19:6d4c039a2d8e | 202 | else |
j3 | 19:6d4c039a2d8e | 203 | { |
j3 | 19:6d4c039a2d8e | 204 | result = Ds2413::CommsWriteError; |
j3 | 19:6d4c039a2d8e | 205 | } |
j3 | 19:6d4c039a2d8e | 206 | } |
j3 | 19:6d4c039a2d8e | 207 | |
j3 | 19:6d4c039a2d8e | 208 | return result; |
j3 | 19:6d4c039a2d8e | 209 | } |