Maxim Integrated
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Superseded by MaximInterface.
Masters/DS2480B/DS2480B.cpp@84:708b7be59fb2, 2016-06-07 (annotated)
- Committer:
- j3
- Date:
- Tue Jun 07 23:06:56 2016 +0000
- Revision:
- 84:708b7be59fb2
- Parent:
- 76:84e6c4994e29
- Child:
- 96:9b7b63c0105e
DS248x and DS2480B require existing I2C and Serial objects to be passed to them now
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| j3 | 3:644fc630f958 | 1 | /******************************************************************//** |
| j3 | 3:644fc630f958 | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
| j3 | 3:644fc630f958 | 3 | * |
| j3 | 3:644fc630f958 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| j3 | 3:644fc630f958 | 5 | * copy of this software and associated documentation files (the "Software"), |
| j3 | 3:644fc630f958 | 6 | * to deal in the Software without restriction, including without limitation |
| j3 | 3:644fc630f958 | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| j3 | 3:644fc630f958 | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| j3 | 3:644fc630f958 | 9 | * Software is furnished to do so, subject to the following conditions: |
| j3 | 3:644fc630f958 | 10 | * |
| j3 | 3:644fc630f958 | 11 | * The above copyright notice and this permission notice shall be included |
| j3 | 3:644fc630f958 | 12 | * in all copies or substantial portions of the Software. |
| j3 | 3:644fc630f958 | 13 | * |
| j3 | 3:644fc630f958 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| j3 | 3:644fc630f958 | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| j3 | 3:644fc630f958 | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| j3 | 3:644fc630f958 | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
| j3 | 3:644fc630f958 | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| j3 | 3:644fc630f958 | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| j3 | 3:644fc630f958 | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
| j3 | 3:644fc630f958 | 21 | * |
| j3 | 3:644fc630f958 | 22 | * Except as contained in this notice, the name of Maxim Integrated |
| j3 | 3:644fc630f958 | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
| j3 | 3:644fc630f958 | 24 | * Products, Inc. Branding Policy. |
| j3 | 3:644fc630f958 | 25 | * |
| j3 | 3:644fc630f958 | 26 | * The mere transfer of this software does not imply any licenses |
| j3 | 3:644fc630f958 | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
| j3 | 3:644fc630f958 | 28 | * trademarks, maskwork rights, or any other form of intellectual |
| j3 | 3:644fc630f958 | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
| j3 | 3:644fc630f958 | 30 | * ownership rights. |
| j3 | 3:644fc630f958 | 31 | **********************************************************************/ |
| j3 | 3:644fc630f958 | 32 | |
| IanBenzMaxim | 73:2cecc1372acc | 33 | #include "DS2480B.h" |
| IanBenzMaxim | 73:2cecc1372acc | 34 | #include "Serial.h" |
| IanBenzMaxim | 73:2cecc1372acc | 35 | #include "Timer.h" |
| IanBenzMaxim | 73:2cecc1372acc | 36 | #include "wait_api.h" |
| j3 | 63:422be898443a | 37 | |
| j3 | 63:422be898443a | 38 | #define WRITE_FUNCTION 0 |
| j3 | 63:422be898443a | 39 | #define READ_FUNCTION 1 |
| j3 | 63:422be898443a | 40 | |
| j3 | 63:422be898443a | 41 | // Mode Commands |
| j3 | 63:422be898443a | 42 | #define MODE_DATA 0xE1 |
| j3 | 63:422be898443a | 43 | #define MODE_COMMAND 0xE3 |
| j3 | 63:422be898443a | 44 | #define MODE_STOP_PULSE 0xF1 |
| j3 | 63:422be898443a | 45 | |
| j3 | 63:422be898443a | 46 | // Return byte value |
| j3 | 63:422be898443a | 47 | #define RB_CHIPID_MASK 0x1C |
| j3 | 63:422be898443a | 48 | #define RB_RESET_MASK 0x03 |
| j3 | 63:422be898443a | 49 | #define RB_1WIRESHORT 0x00 |
| j3 | 63:422be898443a | 50 | #define RB_PRESENCE 0x01 |
| j3 | 63:422be898443a | 51 | #define RB_ALARMPRESENCE 0x02 |
| j3 | 63:422be898443a | 52 | #define RB_NOPRESENCE 0x03 |
| j3 | 63:422be898443a | 53 | |
| j3 | 63:422be898443a | 54 | #define RB_BIT_MASK 0x03 |
| j3 | 63:422be898443a | 55 | #define RB_BIT_ONE 0x03 |
| j3 | 63:422be898443a | 56 | #define RB_BIT_ZERO 0x00 |
| j3 | 63:422be898443a | 57 | |
| j3 | 63:422be898443a | 58 | // Masks for all bit ranges |
| j3 | 63:422be898443a | 59 | #define CMD_MASK 0x80 |
| j3 | 63:422be898443a | 60 | #define FUNCTSEL_MASK 0x60 |
| j3 | 63:422be898443a | 61 | #define BITPOL_MASK 0x10 |
| j3 | 63:422be898443a | 62 | #define SPEEDSEL_MASK 0x0C |
| j3 | 63:422be898443a | 63 | #define MODSEL_MASK 0x02 |
| j3 | 63:422be898443a | 64 | #define PARMSEL_MASK 0x70 |
| j3 | 63:422be898443a | 65 | #define PARMSET_MASK 0x0E |
| j3 | 63:422be898443a | 66 | |
| j3 | 63:422be898443a | 67 | // Command or config bit |
| j3 | 63:422be898443a | 68 | #define CMD_COMM 0x81 |
| j3 | 63:422be898443a | 69 | #define CMD_CONFIG 0x01 |
| j3 | 63:422be898443a | 70 | |
| j3 | 63:422be898443a | 71 | // Function select bits |
| j3 | 63:422be898443a | 72 | #define FUNCTSEL_BIT 0x00 |
| j3 | 63:422be898443a | 73 | #define FUNCTSEL_SEARCHON 0x30 |
| j3 | 63:422be898443a | 74 | #define FUNCTSEL_SEARCHOFF 0x20 |
| j3 | 63:422be898443a | 75 | #define FUNCTSEL_RESET 0x40 |
| j3 | 63:422be898443a | 76 | #define FUNCTSEL_CHMOD 0x60 |
| j3 | 63:422be898443a | 77 | |
| j3 | 63:422be898443a | 78 | // Bit polarity/Pulse voltage bits |
| j3 | 63:422be898443a | 79 | #define BITPOL_ONE 0x10 |
| j3 | 63:422be898443a | 80 | #define BITPOL_ZERO 0x00 |
| j3 | 63:422be898443a | 81 | #define BITPOL_5V 0x00 |
| j3 | 63:422be898443a | 82 | #define BITPOL_12V 0x10 |
| j3 | 63:422be898443a | 83 | |
| j3 | 63:422be898443a | 84 | // One Wire speed bits |
| j3 | 63:422be898443a | 85 | #define SPEEDSEL_STD 0x00 |
| j3 | 63:422be898443a | 86 | #define SPEEDSEL_FLEX 0x04 |
| j3 | 63:422be898443a | 87 | #define SPEEDSEL_OD 0x08 |
| j3 | 63:422be898443a | 88 | #define SPEEDSEL_PULSE 0x0C |
| j3 | 63:422be898443a | 89 | |
| j3 | 63:422be898443a | 90 | // Data/Command mode select bits |
| j3 | 63:422be898443a | 91 | #define MODSEL_DATA 0x00 |
| j3 | 63:422be898443a | 92 | #define MODSEL_COMMAND 0x02 |
| j3 | 63:422be898443a | 93 | |
| j3 | 63:422be898443a | 94 | // 5V Follow Pulse select bits |
| j3 | 63:422be898443a | 95 | #define PRIME5V_TRUE 0x02 |
| j3 | 63:422be898443a | 96 | #define PRIME5V_FALSE 0x00 |
| j3 | 63:422be898443a | 97 | |
| j3 | 63:422be898443a | 98 | // Parameter select bits |
| j3 | 63:422be898443a | 99 | #define PARMSEL_PARMREAD 0x00 |
| j3 | 63:422be898443a | 100 | #define PARMSEL_SLEW 0x10 |
| j3 | 63:422be898443a | 101 | #define PARMSEL_12VPULSE 0x20 |
| j3 | 63:422be898443a | 102 | #define PARMSEL_5VPULSE 0x30 |
| j3 | 63:422be898443a | 103 | #define PARMSEL_WRITE1LOW 0x40 |
| j3 | 63:422be898443a | 104 | #define PARMSEL_SAMPLEOFFSET 0x50 |
| j3 | 63:422be898443a | 105 | #define PARMSEL_ACTIVEPULLUPTIME 0x60 |
| j3 | 63:422be898443a | 106 | #define PARMSEL_BAUDRATE 0x70 |
| j3 | 63:422be898443a | 107 | |
| j3 | 63:422be898443a | 108 | // Pull down slew rate. |
| j3 | 63:422be898443a | 109 | #define PARMSET_Slew15Vus 0x00 |
| j3 | 63:422be898443a | 110 | #define PARMSET_Slew2p2Vus 0x02 |
| j3 | 63:422be898443a | 111 | #define PARMSET_Slew1p65Vus 0x04 |
| j3 | 63:422be898443a | 112 | #define PARMSET_Slew1p37Vus 0x06 |
| j3 | 63:422be898443a | 113 | #define PARMSET_Slew1p1Vus 0x08 |
| j3 | 63:422be898443a | 114 | #define PARMSET_Slew0p83Vus 0x0A |
| j3 | 63:422be898443a | 115 | #define PARMSET_Slew0p7Vus 0x0C |
| j3 | 63:422be898443a | 116 | #define PARMSET_Slew0p55Vus 0x0E |
| j3 | 63:422be898443a | 117 | |
| j3 | 63:422be898443a | 118 | // 12V programming pulse time table |
| j3 | 63:422be898443a | 119 | #define PARMSET_32us 0x00 |
| j3 | 63:422be898443a | 120 | #define PARMSET_64us 0x02 |
| j3 | 63:422be898443a | 121 | #define PARMSET_128us 0x04 |
| j3 | 63:422be898443a | 122 | #define PARMSET_256us 0x06 |
| j3 | 63:422be898443a | 123 | #define PARMSET_512us 0x08 |
| j3 | 63:422be898443a | 124 | #define PARMSET_1024us 0x0A |
| j3 | 63:422be898443a | 125 | #define PARMSET_2048us 0x0C |
| j3 | 63:422be898443a | 126 | #define PARMSET_infinite 0x0E |
| j3 | 63:422be898443a | 127 | |
| j3 | 63:422be898443a | 128 | // 5V strong pull up pulse time table |
| j3 | 63:422be898443a | 129 | #define PARMSET_16p4ms 0x00 |
| j3 | 63:422be898443a | 130 | #define PARMSET_65p5ms 0x02 |
| j3 | 63:422be898443a | 131 | #define PARMSET_131ms 0x04 |
| j3 | 63:422be898443a | 132 | #define PARMSET_262ms 0x06 |
| j3 | 63:422be898443a | 133 | #define PARMSET_524ms 0x08 |
| j3 | 63:422be898443a | 134 | #define PARMSET_1p05s 0x0A |
| j3 | 63:422be898443a | 135 | #define PARMSET_dynamic 0x0C |
| j3 | 63:422be898443a | 136 | #define PARMSET_infinite 0x0E |
| j3 | 63:422be898443a | 137 | |
| j3 | 63:422be898443a | 138 | // Write 1 low time |
| j3 | 63:422be898443a | 139 | #define PARMSET_Write8us 0x00 |
| j3 | 63:422be898443a | 140 | #define PARMSET_Write9us 0x02 |
| j3 | 63:422be898443a | 141 | #define PARMSET_Write10us 0x04 |
| j3 | 63:422be898443a | 142 | #define PARMSET_Write11us 0x06 |
| j3 | 63:422be898443a | 143 | #define PARMSET_Write12us 0x08 |
| j3 | 63:422be898443a | 144 | #define PARMSET_Write13us 0x0A |
| j3 | 63:422be898443a | 145 | #define PARMSET_Write14us 0x0C |
| j3 | 63:422be898443a | 146 | #define PARMSET_Write15us 0x0E |
| j3 | 63:422be898443a | 147 | |
| j3 | 63:422be898443a | 148 | // Data sample offset and Write 0 recovery time |
| j3 | 63:422be898443a | 149 | #define PARMSET_SampOff3us 0x00 |
| j3 | 63:422be898443a | 150 | #define PARMSET_SampOff4us 0x02 |
| j3 | 63:422be898443a | 151 | #define PARMSET_SampOff5us 0x04 |
| j3 | 63:422be898443a | 152 | #define PARMSET_SampOff6us 0x06 |
| j3 | 63:422be898443a | 153 | #define PARMSET_SampOff7us 0x08 |
| j3 | 63:422be898443a | 154 | #define PARMSET_SampOff8us 0x0A |
| j3 | 63:422be898443a | 155 | #define PARMSET_SampOff9us 0x0C |
| j3 | 63:422be898443a | 156 | #define PARMSET_SampOff10us 0x0E |
| j3 | 63:422be898443a | 157 | |
| j3 | 63:422be898443a | 158 | // Active pull up on time |
| j3 | 63:422be898443a | 159 | #define PARMSET_PullUp0p0us 0x00 |
| j3 | 63:422be898443a | 160 | #define PARMSET_PullUp0p5us 0x02 |
| j3 | 63:422be898443a | 161 | #define PARMSET_PullUp1p0us 0x04 |
| j3 | 63:422be898443a | 162 | #define PARMSET_PullUp1p5us 0x06 |
| j3 | 63:422be898443a | 163 | #define PARMSET_PullUp2p0us 0x08 |
| j3 | 63:422be898443a | 164 | #define PARMSET_PullUp2p5us 0x0A |
| j3 | 63:422be898443a | 165 | #define PARMSET_PullUp3p0us 0x0C |
| j3 | 63:422be898443a | 166 | #define PARMSET_PullUp3p5us 0x0E |
| j3 | 63:422be898443a | 167 | |
| j3 | 63:422be898443a | 168 | // Baud rate bits |
| j3 | 63:422be898443a | 169 | #define PARMSET_9600 0x00 |
| j3 | 63:422be898443a | 170 | #define PARMSET_19200 0x02 |
| j3 | 63:422be898443a | 171 | #define PARMSET_57600 0x04 |
| j3 | 63:422be898443a | 172 | #define PARMSET_115200 0x06 |
| j3 | 63:422be898443a | 173 | |
| j3 | 63:422be898443a | 174 | // DS2480B program voltage available |
| j3 | 63:422be898443a | 175 | #define DS2480BPROG_MASK 0x20 |
| j3 | 63:422be898443a | 176 | |
| j3 | 63:422be898443a | 177 | // mode bit flags |
| j3 | 63:422be898443a | 178 | #define MODE_NORMAL 0x00 |
| j3 | 63:422be898443a | 179 | #define MODE_OVERDRIVE 0x01 |
| j3 | 63:422be898443a | 180 | #define MODE_STRONG5 0x02 |
| j3 | 63:422be898443a | 181 | #define MODE_PROGRAM 0x04 |
| j3 | 63:422be898443a | 182 | #define MODE_BREAK 0x08 |
| j3 | 63:422be898443a | 183 | |
| j3 | 63:422be898443a | 184 | #define MAX_BAUD PARMSET_115200 |
| j3 | 63:422be898443a | 185 | |
| IanBenzMaxim | 76:84e6c4994e29 | 186 | using OneWire::DS2480B; |
| IanBenzMaxim | 76:84e6c4994e29 | 187 | using OneWire::OneWireMaster; |
| j3 | 3:644fc630f958 | 188 | |
| j3 | 3:644fc630f958 | 189 | //********************************************************************* |
| IanBenzMaxim | 73:2cecc1372acc | 190 | DS2480B::DS2480B(mbed::Serial &p_serial) |
| IanBenzMaxim | 74:23be10c32fa3 | 191 | :_p_serial(&p_serial), _serial_owner(false) |
| j3 | 3:644fc630f958 | 192 | { |
| j3 | 3:644fc630f958 | 193 | } |
| j3 | 3:644fc630f958 | 194 | |
| j3 | 3:644fc630f958 | 195 | |
| j3 | 3:644fc630f958 | 196 | //********************************************************************* |
| IanBenzMaxim | 73:2cecc1372acc | 197 | DS2480B::~DS2480B() |
| j3 | 3:644fc630f958 | 198 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 199 | if (_serial_owner) |
| j3 | 3:644fc630f958 | 200 | { |
| j3 | 3:644fc630f958 | 201 | delete _p_serial; |
| j3 | 3:644fc630f958 | 202 | } |
| j3 | 3:644fc630f958 | 203 | } |
| j3 | 3:644fc630f958 | 204 | |
| j3 | 3:644fc630f958 | 205 | |
| j3 | 3:644fc630f958 | 206 | //********************************************************************* |
| IanBenzMaxim | 73:2cecc1372acc | 207 | void DS2480B::rx_callback(void) |
| j3 | 63:422be898443a | 208 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 209 | while (_p_serial->readable()) |
| j3 | 65:a28ac52ca127 | 210 | { |
| j3 | 65:a28ac52ca127 | 211 | rx_buffer.buff[rx_buffer.w_idx++] = _p_serial->getc(); |
| j3 | 65:a28ac52ca127 | 212 | rx_buffer.rx_bytes_available++; |
| j3 | 65:a28ac52ca127 | 213 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 214 | |
| IanBenzMaxim | 74:23be10c32fa3 | 215 | if (rx_buffer.w_idx == rx_buffer.r_idx) |
| j3 | 63:422be898443a | 216 | { |
| j3 | 63:422be898443a | 217 | rx_buffer.wrap_error = true; |
| j3 | 63:422be898443a | 218 | } |
| j3 | 63:422be898443a | 219 | } |
| j3 | 63:422be898443a | 220 | |
| j3 | 63:422be898443a | 221 | |
| j3 | 63:422be898443a | 222 | //********************************************************************* |
| IanBenzMaxim | 75:8b627804927c | 223 | OneWireMaster::CmdResult DS2480B::OWInitMaster() |
| j3 | 14:7b2886a50321 | 224 | { |
| IanBenzMaxim | 73:2cecc1372acc | 225 | _p_serial->attach(this, &DS2480B::rx_callback, mbed::Serial::RxIrq); |
| IanBenzMaxim | 74:23be10c32fa3 | 226 | |
| j3 | 63:422be898443a | 227 | rx_buffer.w_idx = 0; |
| j3 | 63:422be898443a | 228 | rx_buffer.r_idx = 0; |
| j3 | 65:a28ac52ca127 | 229 | rx_buffer.rx_bytes_available = 0; |
| j3 | 63:422be898443a | 230 | rx_buffer.wrap_error = false; |
| IanBenzMaxim | 74:23be10c32fa3 | 231 | |
| IanBenzMaxim | 75:8b627804927c | 232 | _ULevel = OneWireMaster::NormalLevel; |
| IanBenzMaxim | 75:8b627804927c | 233 | _UBaud = Bps9600; |
| j3 | 63:422be898443a | 234 | _UMode = MODSEL_COMMAND; |
| IanBenzMaxim | 75:8b627804927c | 235 | _USpeed = OneWireMaster::StandardSpeed; |
| IanBenzMaxim | 74:23be10c32fa3 | 236 | |
| j3 | 63:422be898443a | 237 | return DS2480B_Detect(); |
| j3 | 14:7b2886a50321 | 238 | } |
| j3 | 14:7b2886a50321 | 239 | |
| j3 | 14:7b2886a50321 | 240 | |
| j3 | 14:7b2886a50321 | 241 | //********************************************************************* |
| IanBenzMaxim | 75:8b627804927c | 242 | OneWireMaster::CmdResult DS2480B::OWReset() |
| j3 | 3:644fc630f958 | 243 | { |
| j3 | 63:422be898443a | 244 | OneWireMaster::CmdResult result; |
| j3 | 63:422be898443a | 245 | |
| IanBenzMaxim | 74:23be10c32fa3 | 246 | uint8_t readbuffer[10], sendpacket[10]; |
| IanBenzMaxim | 74:23be10c32fa3 | 247 | uint8_t sendlen = 0; |
| j3 | 63:422be898443a | 248 | |
| j3 | 63:422be898443a | 249 | // make sure normal level |
| IanBenzMaxim | 75:8b627804927c | 250 | result = OWSetLevel(OneWireMaster::NormalLevel); |
| IanBenzMaxim | 74:23be10c32fa3 | 251 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 252 | { |
| j3 | 63:422be898443a | 253 | // check for correct mode |
| IanBenzMaxim | 74:23be10c32fa3 | 254 | if (_UMode != MODSEL_COMMAND) |
| j3 | 63:422be898443a | 255 | { |
| j3 | 63:422be898443a | 256 | _UMode = MODSEL_COMMAND; |
| j3 | 63:422be898443a | 257 | sendpacket[sendlen++] = MODE_COMMAND; |
| j3 | 63:422be898443a | 258 | } |
| j3 | 63:422be898443a | 259 | |
| j3 | 63:422be898443a | 260 | // construct the command |
| j3 | 63:422be898443a | 261 | sendpacket[sendlen++] = (uint8_t)(CMD_COMM | FUNCTSEL_RESET | _USpeed); |
| IanBenzMaxim | 74:23be10c32fa3 | 262 | |
| j3 | 63:422be898443a | 263 | FlushCOM(); |
| j3 | 63:422be898443a | 264 | |
| j3 | 63:422be898443a | 265 | // send the packet |
| IanBenzMaxim | 74:23be10c32fa3 | 266 | result = WriteCOM(sendlen, sendpacket); |
| IanBenzMaxim | 74:23be10c32fa3 | 267 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 268 | { |
| j3 | 63:422be898443a | 269 | // read back the 1 byte response |
| IanBenzMaxim | 74:23be10c32fa3 | 270 | result = ReadCOM(1, readbuffer); |
| IanBenzMaxim | 74:23be10c32fa3 | 271 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 272 | { |
| j3 | 63:422be898443a | 273 | // make sure this byte looks like a reset byte |
| IanBenzMaxim | 74:23be10c32fa3 | 274 | if (((readbuffer[0] & RB_RESET_MASK) == RB_PRESENCE) || ((readbuffer[0] & RB_RESET_MASK) == RB_ALARMPRESENCE)) |
| j3 | 63:422be898443a | 275 | { |
| j3 | 63:422be898443a | 276 | result = OneWireMaster::Success; |
| j3 | 63:422be898443a | 277 | } |
| j3 | 63:422be898443a | 278 | else |
| j3 | 63:422be898443a | 279 | { |
| j3 | 63:422be898443a | 280 | result = OneWireMaster::OperationFailure; |
| j3 | 63:422be898443a | 281 | } |
| j3 | 63:422be898443a | 282 | } |
| j3 | 63:422be898443a | 283 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 284 | |
| IanBenzMaxim | 74:23be10c32fa3 | 285 | if (result != OneWireMaster::Success) |
| j3 | 63:422be898443a | 286 | { |
| j3 | 63:422be898443a | 287 | // an error occured so re-sync with DS2480B |
| j3 | 63:422be898443a | 288 | DS2480B_Detect(); |
| j3 | 63:422be898443a | 289 | } |
| j3 | 63:422be898443a | 290 | } |
| j3 | 63:422be898443a | 291 | |
| j3 | 17:b646b1e3970b | 292 | return result; |
| j3 | 3:644fc630f958 | 293 | } |
| j3 | 3:644fc630f958 | 294 | |
| j3 | 3:644fc630f958 | 295 | |
| j3 | 63:422be898443a | 296 | //********************************************************************* |
| IanBenzMaxim | 75:8b627804927c | 297 | OneWireMaster::CmdResult DS2480B::OWTouchBitSetLevel(uint8_t & sendRecvBit, OWLevel afterLevel) |
| j3 | 3:644fc630f958 | 298 | { |
| j3 | 23:e8e403d61359 | 299 | OneWireMaster::CmdResult result = OneWireMaster::OperationFailure; |
| j3 | 63:422be898443a | 300 | |
| IanBenzMaxim | 74:23be10c32fa3 | 301 | uint8_t readbuffer[10], sendpacket[10]; |
| IanBenzMaxim | 74:23be10c32fa3 | 302 | uint8_t sendlen = 0; |
| j3 | 63:422be898443a | 303 | |
| j3 | 63:422be898443a | 304 | // make sure normal level |
| IanBenzMaxim | 75:8b627804927c | 305 | OWSetLevel(OneWireMaster::NormalLevel); |
| j3 | 63:422be898443a | 306 | |
| j3 | 63:422be898443a | 307 | // check for correct mode |
| IanBenzMaxim | 74:23be10c32fa3 | 308 | if (_UMode != MODSEL_COMMAND) |
| j3 | 63:422be898443a | 309 | { |
| j3 | 63:422be898443a | 310 | _UMode = MODSEL_COMMAND; |
| j3 | 63:422be898443a | 311 | sendpacket[sendlen++] = MODE_COMMAND; |
| j3 | 63:422be898443a | 312 | } |
| j3 | 63:422be898443a | 313 | |
| j3 | 63:422be898443a | 314 | // construct the command |
| IanBenzMaxim | 75:8b627804927c | 315 | sendpacket[sendlen] = (sendRecvBit != 0) ? BITPOL_ONE : BITPOL_ZERO; |
| j3 | 63:422be898443a | 316 | sendpacket[sendlen++] |= CMD_COMM | FUNCTSEL_BIT | _USpeed; |
| j3 | 63:422be898443a | 317 | |
| j3 | 63:422be898443a | 318 | // flush the buffers |
| j3 | 63:422be898443a | 319 | FlushCOM(); |
| j3 | 63:422be898443a | 320 | |
| j3 | 63:422be898443a | 321 | // send the packet |
| IanBenzMaxim | 74:23be10c32fa3 | 322 | result = WriteCOM(sendlen, sendpacket); |
| IanBenzMaxim | 74:23be10c32fa3 | 323 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 324 | { |
| j3 | 63:422be898443a | 325 | // read back the response |
| IanBenzMaxim | 74:23be10c32fa3 | 326 | result = ReadCOM(1, readbuffer); |
| IanBenzMaxim | 74:23be10c32fa3 | 327 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 328 | { |
| j3 | 63:422be898443a | 329 | // interpret the response |
| j3 | 63:422be898443a | 330 | if (((readbuffer[0] & 0xE0) == 0x80) && ((readbuffer[0] & RB_BIT_MASK) == RB_BIT_ONE)) |
| j3 | 63:422be898443a | 331 | { |
| IanBenzMaxim | 75:8b627804927c | 332 | sendRecvBit = 1; |
| j3 | 63:422be898443a | 333 | result = OneWireMaster::Success; |
| j3 | 63:422be898443a | 334 | } |
| j3 | 63:422be898443a | 335 | else |
| j3 | 63:422be898443a | 336 | { |
| IanBenzMaxim | 75:8b627804927c | 337 | sendRecvBit = 0; |
| j3 | 63:422be898443a | 338 | result = OneWireMaster::Success; |
| j3 | 63:422be898443a | 339 | } |
| j3 | 63:422be898443a | 340 | } |
| j3 | 63:422be898443a | 341 | else |
| j3 | 63:422be898443a | 342 | { |
| j3 | 63:422be898443a | 343 | result = OneWireMaster::CommunicationReadError; |
| j3 | 63:422be898443a | 344 | } |
| j3 | 63:422be898443a | 345 | } |
| j3 | 63:422be898443a | 346 | else |
| j3 | 63:422be898443a | 347 | { |
| j3 | 63:422be898443a | 348 | result = OneWireMaster::CommunicationWriteError; |
| j3 | 63:422be898443a | 349 | } |
| j3 | 63:422be898443a | 350 | |
| j3 | 63:422be898443a | 351 | // an error occured so re-sync with DS2480B |
| IanBenzMaxim | 74:23be10c32fa3 | 352 | if (result != OneWireMaster::Success) |
| j3 | 63:422be898443a | 353 | { |
| j3 | 63:422be898443a | 354 | DS2480B_Detect(); |
| j3 | 63:422be898443a | 355 | } |
| j3 | 63:422be898443a | 356 | else |
| j3 | 63:422be898443a | 357 | { |
| IanBenzMaxim | 75:8b627804927c | 358 | result = OWSetLevel(afterLevel); |
| j3 | 63:422be898443a | 359 | } |
| j3 | 63:422be898443a | 360 | |
| j3 | 17:b646b1e3970b | 361 | return result; |
| j3 | 3:644fc630f958 | 362 | } |
| j3 | 3:644fc630f958 | 363 | |
| j3 | 3:644fc630f958 | 364 | |
| j3 | 3:644fc630f958 | 365 | //********************************************************************* |
| IanBenzMaxim | 75:8b627804927c | 366 | OneWireMaster::CmdResult DS2480B::OWWriteByteSetLevel(uint8_t sendByte, OWLevel afterLevel) |
| IanBenzMaxim | 26:a361e3f42ba5 | 367 | { |
| IanBenzMaxim | 26:a361e3f42ba5 | 368 | OneWireMaster::CmdResult result = OneWireMaster::OperationFailure; |
| j3 | 63:422be898443a | 369 | |
| IanBenzMaxim | 74:23be10c32fa3 | 370 | uint8_t readbuffer[10], sendpacket[10]; |
| IanBenzMaxim | 74:23be10c32fa3 | 371 | uint8_t sendlen = 0; |
| j3 | 63:422be898443a | 372 | |
| j3 | 63:422be898443a | 373 | // make sure normal level |
| IanBenzMaxim | 75:8b627804927c | 374 | OWSetLevel(OneWireMaster::NormalLevel); |
| j3 | 63:422be898443a | 375 | |
| j3 | 63:422be898443a | 376 | // check for correct mode |
| IanBenzMaxim | 74:23be10c32fa3 | 377 | if (_UMode != MODSEL_DATA) |
| j3 | 63:422be898443a | 378 | { |
| j3 | 63:422be898443a | 379 | _UMode = MODSEL_DATA; |
| j3 | 63:422be898443a | 380 | sendpacket[sendlen++] = MODE_DATA; |
| j3 | 63:422be898443a | 381 | } |
| j3 | 63:422be898443a | 382 | |
| j3 | 63:422be898443a | 383 | // add the byte to send |
| IanBenzMaxim | 75:8b627804927c | 384 | sendpacket[sendlen++] = sendByte; |
| j3 | 63:422be898443a | 385 | |
| j3 | 63:422be898443a | 386 | // check for duplication of data that looks like COMMAND mode |
| IanBenzMaxim | 75:8b627804927c | 387 | if (sendByte == MODE_COMMAND) |
| j3 | 63:422be898443a | 388 | { |
| IanBenzMaxim | 75:8b627804927c | 389 | sendpacket[sendlen++] = sendByte; |
| j3 | 63:422be898443a | 390 | } |
| j3 | 63:422be898443a | 391 | |
| j3 | 63:422be898443a | 392 | // flush the buffers |
| j3 | 63:422be898443a | 393 | FlushCOM(); |
| j3 | 63:422be898443a | 394 | |
| j3 | 63:422be898443a | 395 | // send the packet |
| IanBenzMaxim | 74:23be10c32fa3 | 396 | result = WriteCOM(sendlen, sendpacket); |
| IanBenzMaxim | 74:23be10c32fa3 | 397 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 398 | { |
| j3 | 63:422be898443a | 399 | // read back the 1 byte response |
| IanBenzMaxim | 74:23be10c32fa3 | 400 | result = ReadCOM(1, readbuffer); |
| IanBenzMaxim | 75:8b627804927c | 401 | if ((result == OneWireMaster::Success) && (readbuffer[0] == sendByte)) |
| j3 | 63:422be898443a | 402 | { |
| j3 | 63:422be898443a | 403 | result = OneWireMaster::Success; |
| j3 | 63:422be898443a | 404 | } |
| j3 | 63:422be898443a | 405 | else |
| j3 | 63:422be898443a | 406 | { |
| j3 | 63:422be898443a | 407 | result = OneWireMaster::CommunicationReadError; |
| j3 | 63:422be898443a | 408 | } |
| j3 | 63:422be898443a | 409 | } |
| j3 | 63:422be898443a | 410 | else |
| j3 | 63:422be898443a | 411 | { |
| j3 | 63:422be898443a | 412 | result = OneWireMaster::CommunicationWriteError; |
| j3 | 63:422be898443a | 413 | } |
| j3 | 63:422be898443a | 414 | |
| j3 | 63:422be898443a | 415 | // an error occured so re-sync with DS2480B |
| IanBenzMaxim | 74:23be10c32fa3 | 416 | if (result != OneWireMaster::Success) |
| j3 | 63:422be898443a | 417 | { |
| j3 | 63:422be898443a | 418 | DS2480B_Detect(); |
| j3 | 63:422be898443a | 419 | } |
| j3 | 63:422be898443a | 420 | else |
| j3 | 63:422be898443a | 421 | { |
| IanBenzMaxim | 75:8b627804927c | 422 | result = OWSetLevel(afterLevel); |
| j3 | 63:422be898443a | 423 | } |
| j3 | 63:422be898443a | 424 | |
| IanBenzMaxim | 26:a361e3f42ba5 | 425 | return result; |
| IanBenzMaxim | 26:a361e3f42ba5 | 426 | } |
| IanBenzMaxim | 26:a361e3f42ba5 | 427 | |
| IanBenzMaxim | 26:a361e3f42ba5 | 428 | |
| IanBenzMaxim | 26:a361e3f42ba5 | 429 | //********************************************************************* |
| IanBenzMaxim | 75:8b627804927c | 430 | OneWireMaster::CmdResult DS2480B::OWReadByteSetLevel(uint8_t & recvByte, OWLevel afterLevel) |
| j3 | 3:644fc630f958 | 431 | { |
| j3 | 23:e8e403d61359 | 432 | OneWireMaster::CmdResult result = OneWireMaster::OperationFailure; |
| j3 | 63:422be898443a | 433 | |
| IanBenzMaxim | 74:23be10c32fa3 | 434 | uint8_t readbuffer[10], sendpacket[10]; |
| IanBenzMaxim | 74:23be10c32fa3 | 435 | uint8_t sendlen = 0; |
| j3 | 63:422be898443a | 436 | |
| j3 | 63:422be898443a | 437 | // make sure normal level |
| IanBenzMaxim | 75:8b627804927c | 438 | OWSetLevel(OneWireMaster::NormalLevel); |
| j3 | 63:422be898443a | 439 | |
| j3 | 63:422be898443a | 440 | // check for correct mode |
| IanBenzMaxim | 74:23be10c32fa3 | 441 | if (_UMode != MODSEL_DATA) |
| j3 | 63:422be898443a | 442 | { |
| j3 | 63:422be898443a | 443 | _UMode = MODSEL_DATA; |
| j3 | 63:422be898443a | 444 | sendpacket[sendlen++] = MODE_DATA; |
| j3 | 63:422be898443a | 445 | } |
| j3 | 63:422be898443a | 446 | |
| j3 | 63:422be898443a | 447 | // add the byte to send |
| j3 | 63:422be898443a | 448 | sendpacket[sendlen++] = 0xFF; |
| j3 | 63:422be898443a | 449 | |
| j3 | 63:422be898443a | 450 | // flush the buffers |
| j3 | 63:422be898443a | 451 | FlushCOM(); |
| j3 | 63:422be898443a | 452 | |
| j3 | 63:422be898443a | 453 | // send the packet |
| IanBenzMaxim | 74:23be10c32fa3 | 454 | result = WriteCOM(sendlen, sendpacket); |
| IanBenzMaxim | 74:23be10c32fa3 | 455 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 456 | { |
| j3 | 63:422be898443a | 457 | // read back the 1 byte response |
| IanBenzMaxim | 74:23be10c32fa3 | 458 | result = ReadCOM(1, readbuffer); |
| IanBenzMaxim | 74:23be10c32fa3 | 459 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 460 | { |
| IanBenzMaxim | 75:8b627804927c | 461 | recvByte = readbuffer[0]; |
| j3 | 63:422be898443a | 462 | result = OneWireMaster::Success; |
| j3 | 63:422be898443a | 463 | } |
| j3 | 63:422be898443a | 464 | else |
| j3 | 63:422be898443a | 465 | { |
| j3 | 63:422be898443a | 466 | result = OneWireMaster::CommunicationReadError; |
| j3 | 63:422be898443a | 467 | } |
| j3 | 63:422be898443a | 468 | } |
| j3 | 63:422be898443a | 469 | else |
| j3 | 63:422be898443a | 470 | { |
| j3 | 63:422be898443a | 471 | result = OneWireMaster::CommunicationWriteError; |
| j3 | 63:422be898443a | 472 | } |
| j3 | 63:422be898443a | 473 | |
| j3 | 63:422be898443a | 474 | // an error occured so re-sync with DS2480B |
| IanBenzMaxim | 74:23be10c32fa3 | 475 | if (result != OneWireMaster::Success) |
| j3 | 63:422be898443a | 476 | { |
| j3 | 63:422be898443a | 477 | DS2480B_Detect(); |
| j3 | 63:422be898443a | 478 | } |
| j3 | 63:422be898443a | 479 | else |
| j3 | 63:422be898443a | 480 | { |
| IanBenzMaxim | 75:8b627804927c | 481 | result = OWSetLevel(afterLevel); |
| j3 | 63:422be898443a | 482 | } |
| j3 | 63:422be898443a | 483 | |
| j3 | 17:b646b1e3970b | 484 | return result; |
| j3 | 3:644fc630f958 | 485 | } |
| j3 | 3:644fc630f958 | 486 | |
| j3 | 3:644fc630f958 | 487 | |
| j3 | 3:644fc630f958 | 488 | //********************************************************************* |
| IanBenzMaxim | 75:8b627804927c | 489 | OneWireMaster::CmdResult DS2480B::OWSetSpeed(OWSpeed newSpeed) |
| j3 | 17:b646b1e3970b | 490 | { |
| j3 | 23:e8e403d61359 | 491 | OneWireMaster::CmdResult result = OneWireMaster::OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 492 | |
| j3 | 17:b646b1e3970b | 493 | //TODO |
| IanBenzMaxim | 74:23be10c32fa3 | 494 | |
| j3 | 17:b646b1e3970b | 495 | return result; |
| j3 | 3:644fc630f958 | 496 | } |
| j3 | 3:644fc630f958 | 497 | |
| j3 | 3:644fc630f958 | 498 | |
| j3 | 3:644fc630f958 | 499 | //********************************************************************* |
| IanBenzMaxim | 75:8b627804927c | 500 | OneWireMaster::CmdResult DS2480B::OWSetLevel(OWLevel newLevel) |
| j3 | 3:644fc630f958 | 501 | { |
| j3 | 63:422be898443a | 502 | OneWireMaster::CmdResult result = OneWireMaster::Success; |
| j3 | 63:422be898443a | 503 | |
| IanBenzMaxim | 74:23be10c32fa3 | 504 | uint8_t sendpacket[10], readbuffer[10]; |
| IanBenzMaxim | 74:23be10c32fa3 | 505 | uint8_t sendlen = 0; |
| j3 | 63:422be898443a | 506 | |
| j3 | 63:422be898443a | 507 | // check if need to change level |
| IanBenzMaxim | 75:8b627804927c | 508 | if (newLevel != _ULevel) |
| j3 | 63:422be898443a | 509 | { |
| j3 | 63:422be898443a | 510 | // check for correct mode |
| IanBenzMaxim | 74:23be10c32fa3 | 511 | if (_UMode != MODSEL_COMMAND) |
| j3 | 63:422be898443a | 512 | { |
| j3 | 63:422be898443a | 513 | _UMode = MODSEL_COMMAND; |
| j3 | 63:422be898443a | 514 | sendpacket[sendlen++] = MODE_COMMAND; |
| j3 | 63:422be898443a | 515 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 516 | |
| j3 | 63:422be898443a | 517 | // check if just putting back to normal |
| IanBenzMaxim | 75:8b627804927c | 518 | if (newLevel == OneWireMaster::NormalLevel) |
| j3 | 63:422be898443a | 519 | { |
| j3 | 63:422be898443a | 520 | // stop pulse command |
| j3 | 63:422be898443a | 521 | sendpacket[sendlen++] = MODE_STOP_PULSE; |
| j3 | 63:422be898443a | 522 | |
| j3 | 63:422be898443a | 523 | // add the command to begin the pulse WITHOUT prime |
| j3 | 63:422be898443a | 524 | sendpacket[sendlen++] = CMD_COMM | FUNCTSEL_CHMOD | SPEEDSEL_PULSE | BITPOL_5V | PRIME5V_FALSE; |
| j3 | 63:422be898443a | 525 | |
| j3 | 63:422be898443a | 526 | // stop pulse command |
| j3 | 63:422be898443a | 527 | sendpacket[sendlen++] = MODE_STOP_PULSE; |
| IanBenzMaxim | 74:23be10c32fa3 | 528 | |
| j3 | 63:422be898443a | 529 | FlushCOM(); |
| j3 | 63:422be898443a | 530 | |
| j3 | 63:422be898443a | 531 | // send the packet |
| IanBenzMaxim | 74:23be10c32fa3 | 532 | result = WriteCOM(sendlen, sendpacket); |
| IanBenzMaxim | 74:23be10c32fa3 | 533 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 534 | { |
| j3 | 63:422be898443a | 535 | // read back the 1 byte response |
| IanBenzMaxim | 74:23be10c32fa3 | 536 | result = ReadCOM(2, readbuffer); |
| IanBenzMaxim | 74:23be10c32fa3 | 537 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 538 | { |
| j3 | 63:422be898443a | 539 | // check response byte |
| IanBenzMaxim | 74:23be10c32fa3 | 540 | if (((readbuffer[0] & 0xE0) == 0xE0) && ((readbuffer[1] & 0xE0) == 0xE0)) |
| j3 | 63:422be898443a | 541 | { |
| IanBenzMaxim | 75:8b627804927c | 542 | _ULevel = OneWireMaster::NormalLevel; |
| j3 | 63:422be898443a | 543 | } |
| j3 | 63:422be898443a | 544 | else |
| j3 | 63:422be898443a | 545 | { |
| j3 | 63:422be898443a | 546 | result = OneWireMaster::OperationFailure; |
| j3 | 63:422be898443a | 547 | } |
| j3 | 63:422be898443a | 548 | } |
| j3 | 63:422be898443a | 549 | } |
| j3 | 63:422be898443a | 550 | } |
| j3 | 63:422be898443a | 551 | // set new level |
| IanBenzMaxim | 74:23be10c32fa3 | 552 | else |
| j3 | 63:422be898443a | 553 | { |
| j3 | 63:422be898443a | 554 | // set the SPUD time value |
| j3 | 63:422be898443a | 555 | sendpacket[sendlen++] = CMD_CONFIG | PARMSEL_5VPULSE | PARMSET_infinite; |
| j3 | 63:422be898443a | 556 | // add the command to begin the pulse |
| j3 | 63:422be898443a | 557 | sendpacket[sendlen++] = CMD_COMM | FUNCTSEL_CHMOD | SPEEDSEL_PULSE | BITPOL_5V; |
| IanBenzMaxim | 74:23be10c32fa3 | 558 | |
| j3 | 63:422be898443a | 559 | FlushCOM(); |
| j3 | 63:422be898443a | 560 | |
| j3 | 63:422be898443a | 561 | // send the packet |
| IanBenzMaxim | 74:23be10c32fa3 | 562 | result = WriteCOM(sendlen, sendpacket); |
| IanBenzMaxim | 74:23be10c32fa3 | 563 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 564 | { |
| j3 | 63:422be898443a | 565 | // read back the 1 byte response from setting time limit |
| IanBenzMaxim | 74:23be10c32fa3 | 566 | result = ReadCOM(1, readbuffer); |
| IanBenzMaxim | 74:23be10c32fa3 | 567 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 568 | { |
| j3 | 63:422be898443a | 569 | // check response byte |
| IanBenzMaxim | 74:23be10c32fa3 | 570 | if ((readbuffer[0] & 0x81) == 0) |
| j3 | 63:422be898443a | 571 | { |
| IanBenzMaxim | 75:8b627804927c | 572 | _ULevel = newLevel; |
| j3 | 63:422be898443a | 573 | } |
| j3 | 63:422be898443a | 574 | else |
| j3 | 63:422be898443a | 575 | { |
| j3 | 63:422be898443a | 576 | result = OneWireMaster::OperationFailure; |
| j3 | 63:422be898443a | 577 | } |
| j3 | 63:422be898443a | 578 | } |
| j3 | 63:422be898443a | 579 | } |
| j3 | 63:422be898443a | 580 | } |
| j3 | 63:422be898443a | 581 | |
| j3 | 63:422be898443a | 582 | // if lost communication with DS2480B then reset |
| IanBenzMaxim | 74:23be10c32fa3 | 583 | if (result != OneWireMaster::Success) |
| j3 | 63:422be898443a | 584 | { |
| j3 | 63:422be898443a | 585 | DS2480B_Detect(); |
| j3 | 63:422be898443a | 586 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 587 | |
| j3 | 63:422be898443a | 588 | } |
| j3 | 63:422be898443a | 589 | |
| j3 | 63:422be898443a | 590 | return result; |
| j3 | 63:422be898443a | 591 | } |
| j3 | 63:422be898443a | 592 | |
| j3 | 63:422be898443a | 593 | |
| j3 | 63:422be898443a | 594 | //********************************************************************* |
| IanBenzMaxim | 73:2cecc1372acc | 595 | OneWireMaster::CmdResult DS2480B::DS2480B_Detect(void) |
| j3 | 63:422be898443a | 596 | { |
| j3 | 63:422be898443a | 597 | OneWireMaster::CmdResult result; |
| j3 | 63:422be898443a | 598 | |
| IanBenzMaxim | 74:23be10c32fa3 | 599 | uint8_t sendpacket[10], readbuffer[10]; |
| IanBenzMaxim | 74:23be10c32fa3 | 600 | uint8_t sendlen = 0; |
| j3 | 63:422be898443a | 601 | |
| j3 | 63:422be898443a | 602 | // reset modes |
| j3 | 63:422be898443a | 603 | _UMode = MODSEL_COMMAND; |
| IanBenzMaxim | 75:8b627804927c | 604 | _UBaud = Bps9600; |
| j3 | 63:422be898443a | 605 | _USpeed = SPEEDSEL_FLEX; |
| j3 | 63:422be898443a | 606 | |
| j3 | 63:422be898443a | 607 | // set the baud rate to 9600 |
| j3 | 63:422be898443a | 608 | SetBaudCOM(_UBaud); |
| j3 | 63:422be898443a | 609 | |
| j3 | 63:422be898443a | 610 | // send a break to reset the DS2480B |
| j3 | 63:422be898443a | 611 | BreakCOM(); |
| j3 | 63:422be898443a | 612 | |
| j3 | 63:422be898443a | 613 | // delay to let line settle |
| j3 | 63:422be898443a | 614 | wait_ms(2); |
| IanBenzMaxim | 74:23be10c32fa3 | 615 | |
| j3 | 63:422be898443a | 616 | FlushCOM(); |
| j3 | 63:422be898443a | 617 | |
| j3 | 63:422be898443a | 618 | // send the timing byte |
| j3 | 63:422be898443a | 619 | sendpacket[0] = 0xC1; |
| IanBenzMaxim | 74:23be10c32fa3 | 620 | result = WriteCOM(1, sendpacket); |
| IanBenzMaxim | 74:23be10c32fa3 | 621 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 622 | { |
| j3 | 63:422be898443a | 623 | // delay to let line settle |
| j3 | 63:422be898443a | 624 | wait_ms(2); |
| j3 | 63:422be898443a | 625 | |
| j3 | 63:422be898443a | 626 | // set the FLEX configuration parameters |
| j3 | 63:422be898443a | 627 | // default PDSRC = 1.37Vus |
| j3 | 63:422be898443a | 628 | sendpacket[sendlen++] = CMD_CONFIG | PARMSEL_SLEW | PARMSET_Slew1p37Vus; |
| j3 | 63:422be898443a | 629 | // default W1LT = 10us |
| j3 | 63:422be898443a | 630 | sendpacket[sendlen++] = CMD_CONFIG | PARMSEL_WRITE1LOW | PARMSET_Write10us; |
| j3 | 63:422be898443a | 631 | // default DSO/WORT = 8us |
| j3 | 63:422be898443a | 632 | sendpacket[sendlen++] = CMD_CONFIG | PARMSEL_SAMPLEOFFSET | PARMSET_SampOff8us; |
| j3 | 63:422be898443a | 633 | |
| j3 | 63:422be898443a | 634 | // construct the command to read the baud rate (to test command block) |
| j3 | 63:422be898443a | 635 | sendpacket[sendlen++] = CMD_CONFIG | PARMSEL_PARMREAD | (PARMSEL_BAUDRATE >> 3); |
| j3 | 63:422be898443a | 636 | |
| j3 | 63:422be898443a | 637 | // also do 1 bit operation (to test 1-Wire block) |
| j3 | 63:422be898443a | 638 | sendpacket[sendlen++] = CMD_COMM | FUNCTSEL_BIT | _UBaud | BITPOL_ONE; |
| IanBenzMaxim | 74:23be10c32fa3 | 639 | |
| j3 | 63:422be898443a | 640 | FlushCOM(); |
| j3 | 63:422be898443a | 641 | |
| j3 | 63:422be898443a | 642 | // send the packet |
| IanBenzMaxim | 74:23be10c32fa3 | 643 | result = WriteCOM(sendlen, sendpacket); |
| IanBenzMaxim | 74:23be10c32fa3 | 644 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 645 | { |
| j3 | 63:422be898443a | 646 | // read back the response |
| IanBenzMaxim | 74:23be10c32fa3 | 647 | result = ReadCOM(5, readbuffer); |
| IanBenzMaxim | 74:23be10c32fa3 | 648 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 649 | { |
| j3 | 63:422be898443a | 650 | // look at the baud rate and bit operation |
| j3 | 63:422be898443a | 651 | // to see if the response makes sense |
| IanBenzMaxim | 74:23be10c32fa3 | 652 | if (((readbuffer[3] & 0xF1) == 0x00) && ((readbuffer[3] & 0x0E) == _UBaud) && ((readbuffer[4] & 0xF0) == 0x90) && ((readbuffer[4] & 0x0C) == _UBaud)) |
| j3 | 63:422be898443a | 653 | { |
| j3 | 63:422be898443a | 654 | result = OneWireMaster::Success; |
| j3 | 63:422be898443a | 655 | } |
| j3 | 63:422be898443a | 656 | else |
| j3 | 63:422be898443a | 657 | { |
| j3 | 63:422be898443a | 658 | result = OneWireMaster::OperationFailure; |
| j3 | 63:422be898443a | 659 | } |
| j3 | 63:422be898443a | 660 | } |
| j3 | 63:422be898443a | 661 | } |
| j3 | 63:422be898443a | 662 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 663 | |
| j3 | 63:422be898443a | 664 | return result; |
| j3 | 63:422be898443a | 665 | } |
| j3 | 63:422be898443a | 666 | |
| j3 | 63:422be898443a | 667 | |
| j3 | 63:422be898443a | 668 | //********************************************************************* |
| IanBenzMaxim | 75:8b627804927c | 669 | OneWireMaster::CmdResult DS2480B::DS2480B_ChangeBaud(Baud newBaud) |
| j3 | 63:422be898443a | 670 | { |
| j3 | 65:a28ac52ca127 | 671 | OneWireMaster::CmdResult result = OneWireMaster::Success; |
| j3 | 65:a28ac52ca127 | 672 | |
| IanBenzMaxim | 74:23be10c32fa3 | 673 | uint8_t readbuffer[5], sendpacket[5], sendpacket2[5]; |
| IanBenzMaxim | 74:23be10c32fa3 | 674 | uint8_t sendlen = 0, sendlen2 = 0; |
| j3 | 65:a28ac52ca127 | 675 | |
| j3 | 65:a28ac52ca127 | 676 | //see if diffenent then current baud rate |
| IanBenzMaxim | 75:8b627804927c | 677 | if (_UBaud != newBaud) |
| j3 | 65:a28ac52ca127 | 678 | { |
| j3 | 65:a28ac52ca127 | 679 | // build the command packet |
| j3 | 65:a28ac52ca127 | 680 | // check for correct mode |
| IanBenzMaxim | 74:23be10c32fa3 | 681 | if (_UMode != MODSEL_COMMAND) |
| j3 | 65:a28ac52ca127 | 682 | { |
| j3 | 65:a28ac52ca127 | 683 | _UMode = MODSEL_COMMAND; |
| j3 | 65:a28ac52ca127 | 684 | sendpacket[sendlen++] = MODE_COMMAND; |
| j3 | 65:a28ac52ca127 | 685 | } |
| j3 | 65:a28ac52ca127 | 686 | // build the command |
| IanBenzMaxim | 75:8b627804927c | 687 | sendpacket[sendlen++] = CMD_CONFIG | PARMSEL_BAUDRATE | newBaud; |
| j3 | 63:422be898443a | 688 | |
| j3 | 65:a28ac52ca127 | 689 | // flush the buffers |
| j3 | 65:a28ac52ca127 | 690 | FlushCOM(); |
| j3 | 65:a28ac52ca127 | 691 | |
| j3 | 65:a28ac52ca127 | 692 | // send the packet |
| IanBenzMaxim | 74:23be10c32fa3 | 693 | result = WriteCOM(sendlen, sendpacket); |
| IanBenzMaxim | 74:23be10c32fa3 | 694 | if (result == OneWireMaster::Success) |
| j3 | 65:a28ac52ca127 | 695 | { |
| j3 | 65:a28ac52ca127 | 696 | // make sure buffer is flushed |
| j3 | 65:a28ac52ca127 | 697 | wait_ms(5); |
| j3 | 63:422be898443a | 698 | |
| j3 | 65:a28ac52ca127 | 699 | // change our baud rate |
| IanBenzMaxim | 75:8b627804927c | 700 | SetBaudCOM(newBaud); |
| IanBenzMaxim | 75:8b627804927c | 701 | _UBaud = newBaud; |
| j3 | 65:a28ac52ca127 | 702 | |
| j3 | 65:a28ac52ca127 | 703 | // wait for things to settle |
| j3 | 65:a28ac52ca127 | 704 | wait_ms(5); |
| j3 | 65:a28ac52ca127 | 705 | |
| j3 | 65:a28ac52ca127 | 706 | // build a command packet to read back baud rate |
| j3 | 65:a28ac52ca127 | 707 | sendpacket2[sendlen2++] = CMD_CONFIG | PARMSEL_PARMREAD | (PARMSEL_BAUDRATE >> 3); |
| j3 | 65:a28ac52ca127 | 708 | |
| j3 | 65:a28ac52ca127 | 709 | // flush the buffers |
| j3 | 65:a28ac52ca127 | 710 | FlushCOM(); |
| j3 | 63:422be898443a | 711 | |
| j3 | 65:a28ac52ca127 | 712 | // send the packet |
| IanBenzMaxim | 74:23be10c32fa3 | 713 | result = WriteCOM(sendlen2, sendpacket2); |
| IanBenzMaxim | 74:23be10c32fa3 | 714 | if (result == OneWireMaster::Success) |
| j3 | 63:422be898443a | 715 | { |
| j3 | 65:a28ac52ca127 | 716 | // read back the 1 byte response |
| IanBenzMaxim | 74:23be10c32fa3 | 717 | result = ReadCOM(1, readbuffer); |
| IanBenzMaxim | 74:23be10c32fa3 | 718 | if (result == OneWireMaster::Success) |
| j3 | 65:a28ac52ca127 | 719 | { |
| j3 | 65:a28ac52ca127 | 720 | // verify correct baud |
| IanBenzMaxim | 74:23be10c32fa3 | 721 | if ((readbuffer[0] & 0x0E) == (sendpacket[sendlen - 1] & 0x0E)) |
| j3 | 65:a28ac52ca127 | 722 | { |
| j3 | 65:a28ac52ca127 | 723 | result = OneWireMaster::Success; |
| j3 | 65:a28ac52ca127 | 724 | } |
| j3 | 65:a28ac52ca127 | 725 | else |
| j3 | 65:a28ac52ca127 | 726 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 727 | result = OneWireMaster::OperationFailure; |
| j3 | 65:a28ac52ca127 | 728 | } |
| j3 | 65:a28ac52ca127 | 729 | } |
| j3 | 65:a28ac52ca127 | 730 | else |
| j3 | 65:a28ac52ca127 | 731 | { |
| j3 | 65:a28ac52ca127 | 732 | result = OneWireMaster::CommunicationReadError; |
| j3 | 65:a28ac52ca127 | 733 | } |
| j3 | 63:422be898443a | 734 | } |
| j3 | 65:a28ac52ca127 | 735 | else |
| j3 | 65:a28ac52ca127 | 736 | { |
| j3 | 65:a28ac52ca127 | 737 | result = OneWireMaster::CommunicationWriteError; |
| j3 | 65:a28ac52ca127 | 738 | } |
| j3 | 65:a28ac52ca127 | 739 | } |
| j3 | 65:a28ac52ca127 | 740 | else |
| j3 | 65:a28ac52ca127 | 741 | { |
| j3 | 65:a28ac52ca127 | 742 | result = OneWireMaster::CommunicationWriteError; |
| j3 | 65:a28ac52ca127 | 743 | } |
| j3 | 65:a28ac52ca127 | 744 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 745 | |
| j3 | 65:a28ac52ca127 | 746 | // if lost communication with DS2480B then reset |
| IanBenzMaxim | 74:23be10c32fa3 | 747 | if (result != OneWireMaster::Success) |
| j3 | 65:a28ac52ca127 | 748 | { |
| j3 | 65:a28ac52ca127 | 749 | DS2480B_Detect(); |
| j3 | 65:a28ac52ca127 | 750 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 751 | |
| j3 | 65:a28ac52ca127 | 752 | return result; |
| j3 | 63:422be898443a | 753 | } |
| j3 | 63:422be898443a | 754 | |
| j3 | 63:422be898443a | 755 | |
| j3 | 63:422be898443a | 756 | //********************************************************************* |
| IanBenzMaxim | 73:2cecc1372acc | 757 | OneWireMaster::CmdResult DS2480B::WriteCOM(uint32_t outlen, uint8_t *outbuf) |
| j3 | 63:422be898443a | 758 | { |
| j3 | 23:e8e403d61359 | 759 | OneWireMaster::CmdResult result = OneWireMaster::OperationFailure; |
| IanBenzMaxim | 74:23be10c32fa3 | 760 | |
| IanBenzMaxim | 73:2cecc1372acc | 761 | mbed::Timer t; |
| j3 | 63:422be898443a | 762 | uint32_t t_val; |
| j3 | 63:422be898443a | 763 | uint32_t timeout; |
| j3 | 63:422be898443a | 764 | uint8_t idx = 0; |
| IanBenzMaxim | 74:23be10c32fa3 | 765 | |
| j3 | 63:422be898443a | 766 | //calculate timeout, the time needed to tx 1 byte |
| j3 | 65:a28ac52ca127 | 767 | //double for 115200 due to timer object inaccuracies |
| IanBenzMaxim | 74:23be10c32fa3 | 768 | switch (_UBaud) |
| j3 | 63:422be898443a | 769 | { |
| IanBenzMaxim | 75:8b627804927c | 770 | case Bps115200: |
| IanBenzMaxim | 74:23be10c32fa3 | 771 | timeout = ((1000000 / 115200) * 20); |
| IanBenzMaxim | 74:23be10c32fa3 | 772 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 773 | |
| IanBenzMaxim | 75:8b627804927c | 774 | case Bps57600: |
| IanBenzMaxim | 74:23be10c32fa3 | 775 | timeout = ((1000000 / 57600) * 10); |
| IanBenzMaxim | 74:23be10c32fa3 | 776 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 777 | |
| IanBenzMaxim | 75:8b627804927c | 778 | case Bps19200: |
| IanBenzMaxim | 74:23be10c32fa3 | 779 | timeout = ((1000000 / 19200) * 10); |
| IanBenzMaxim | 74:23be10c32fa3 | 780 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 781 | |
| IanBenzMaxim | 75:8b627804927c | 782 | case Bps9600: |
| IanBenzMaxim | 74:23be10c32fa3 | 783 | default: |
| IanBenzMaxim | 74:23be10c32fa3 | 784 | timeout = ((1000000 / 9600) * 10); |
| IanBenzMaxim | 74:23be10c32fa3 | 785 | break; |
| j3 | 63:422be898443a | 786 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 787 | |
| j3 | 63:422be898443a | 788 | t.start(); |
| j3 | 63:422be898443a | 789 | do |
| j3 | 63:422be898443a | 790 | { |
| j3 | 63:422be898443a | 791 | t.reset(); |
| j3 | 63:422be898443a | 792 | do |
| j3 | 63:422be898443a | 793 | { |
| j3 | 63:422be898443a | 794 | t_val = t.read_us(); |
| IanBenzMaxim | 74:23be10c32fa3 | 795 | } while (!_p_serial->writeable() && (t_val < timeout)); |
| IanBenzMaxim | 74:23be10c32fa3 | 796 | |
| IanBenzMaxim | 74:23be10c32fa3 | 797 | if (t_val < timeout) |
| j3 | 63:422be898443a | 798 | { |
| j3 | 63:422be898443a | 799 | _p_serial->putc(outbuf[idx++]); |
| j3 | 63:422be898443a | 800 | result = OneWireMaster::Success; |
| j3 | 63:422be898443a | 801 | } |
| j3 | 63:422be898443a | 802 | else |
| j3 | 63:422be898443a | 803 | { |
| j3 | 63:422be898443a | 804 | result = OneWireMaster::TimeoutError; |
| j3 | 63:422be898443a | 805 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 806 | } while ((idx < outlen) && (result == OneWireMaster::Success)); |
| IanBenzMaxim | 74:23be10c32fa3 | 807 | |
| j3 | 17:b646b1e3970b | 808 | return result; |
| j3 | 63:422be898443a | 809 | } |
| j3 | 63:422be898443a | 810 | |
| j3 | 63:422be898443a | 811 | |
| j3 | 63:422be898443a | 812 | //********************************************************************* |
| IanBenzMaxim | 73:2cecc1372acc | 813 | OneWireMaster::CmdResult DS2480B::ReadCOM(uint32_t inlen, uint8_t *inbuf) |
| j3 | 63:422be898443a | 814 | { |
| j3 | 63:422be898443a | 815 | OneWireMaster::CmdResult result; |
| IanBenzMaxim | 73:2cecc1372acc | 816 | mbed::Timer t; |
| IanBenzMaxim | 74:23be10c32fa3 | 817 | uint32_t num_bytes_read = 0; |
| j3 | 63:422be898443a | 818 | uint32_t timeout; |
| j3 | 65:a28ac52ca127 | 819 | uint32_t micro_seconds; |
| IanBenzMaxim | 74:23be10c32fa3 | 820 | |
| j3 | 65:a28ac52ca127 | 821 | //calculate timeout, 10x the time needed to recieve inlen bytes |
| j3 | 65:a28ac52ca127 | 822 | //double for 115200 due to timer object inaccuracies |
| IanBenzMaxim | 74:23be10c32fa3 | 823 | switch (_UBaud) |
| j3 | 63:422be898443a | 824 | { |
| IanBenzMaxim | 75:8b627804927c | 825 | case Bps115200: |
| IanBenzMaxim | 74:23be10c32fa3 | 826 | timeout = ((1000000 / 115200) * 200) * inlen; |
| IanBenzMaxim | 74:23be10c32fa3 | 827 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 828 | |
| IanBenzMaxim | 75:8b627804927c | 829 | case Bps57600: |
| IanBenzMaxim | 74:23be10c32fa3 | 830 | timeout = ((1000000 / 57600) * 100) * inlen; |
| IanBenzMaxim | 74:23be10c32fa3 | 831 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 832 | |
| IanBenzMaxim | 75:8b627804927c | 833 | case Bps19200: |
| IanBenzMaxim | 74:23be10c32fa3 | 834 | timeout = ((1000000 / 19200) * 100) * inlen; |
| IanBenzMaxim | 74:23be10c32fa3 | 835 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 836 | |
| IanBenzMaxim | 75:8b627804927c | 837 | case Bps9600: |
| IanBenzMaxim | 74:23be10c32fa3 | 838 | default: |
| IanBenzMaxim | 74:23be10c32fa3 | 839 | timeout = ((1000000 / 9600) * 100) * inlen; |
| IanBenzMaxim | 74:23be10c32fa3 | 840 | break; |
| j3 | 63:422be898443a | 841 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 842 | |
| IanBenzMaxim | 74:23be10c32fa3 | 843 | if (rx_buffer.wrap_error) |
| j3 | 63:422be898443a | 844 | { |
| j3 | 63:422be898443a | 845 | //reset rx buffer, error, and return failure |
| j3 | 63:422be898443a | 846 | rx_buffer.w_idx = 0; |
| j3 | 63:422be898443a | 847 | rx_buffer.r_idx = 0; |
| j3 | 65:a28ac52ca127 | 848 | rx_buffer.rx_bytes_available = 0; |
| j3 | 63:422be898443a | 849 | rx_buffer.wrap_error = false; |
| IanBenzMaxim | 74:23be10c32fa3 | 850 | |
| j3 | 63:422be898443a | 851 | result = OneWireMaster::OperationFailure; |
| j3 | 63:422be898443a | 852 | } |
| j3 | 63:422be898443a | 853 | else |
| j3 | 63:422be898443a | 854 | { |
| j3 | 65:a28ac52ca127 | 855 | t.start(); |
| j3 | 65:a28ac52ca127 | 856 | t.reset(); |
| j3 | 65:a28ac52ca127 | 857 | do |
| j3 | 63:422be898443a | 858 | { |
| j3 | 63:422be898443a | 859 | do |
| j3 | 63:422be898443a | 860 | { |
| j3 | 65:a28ac52ca127 | 861 | micro_seconds = t.read_us(); |
| IanBenzMaxim | 74:23be10c32fa3 | 862 | } while (!rx_buffer.rx_bytes_available && (micro_seconds < timeout)); |
| IanBenzMaxim | 74:23be10c32fa3 | 863 | |
| IanBenzMaxim | 74:23be10c32fa3 | 864 | if (rx_buffer.rx_bytes_available) |
| j3 | 63:422be898443a | 865 | { |
| j3 | 65:a28ac52ca127 | 866 | inbuf[num_bytes_read++] = rx_buffer.buff[rx_buffer.r_idx++]; |
| j3 | 65:a28ac52ca127 | 867 | rx_buffer.rx_bytes_available--; |
| IanBenzMaxim | 74:23be10c32fa3 | 868 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 869 | } while ((num_bytes_read < inlen) && (micro_seconds < timeout) && !rx_buffer.wrap_error); |
| j3 | 65:a28ac52ca127 | 870 | t.stop(); |
| IanBenzMaxim | 74:23be10c32fa3 | 871 | |
| IanBenzMaxim | 74:23be10c32fa3 | 872 | if (num_bytes_read == inlen) |
| j3 | 65:a28ac52ca127 | 873 | { |
| j3 | 65:a28ac52ca127 | 874 | result = OneWireMaster::Success; |
| j3 | 65:a28ac52ca127 | 875 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 876 | else if (micro_seconds > timeout) |
| j3 | 65:a28ac52ca127 | 877 | { |
| j3 | 65:a28ac52ca127 | 878 | result = OneWireMaster::TimeoutError; |
| j3 | 63:422be898443a | 879 | } |
| j3 | 63:422be898443a | 880 | else |
| j3 | 63:422be898443a | 881 | { |
| j3 | 65:a28ac52ca127 | 882 | //reset rx buffer, error, and return failure |
| j3 | 65:a28ac52ca127 | 883 | rx_buffer.w_idx = 0; |
| j3 | 65:a28ac52ca127 | 884 | rx_buffer.r_idx = 0; |
| j3 | 65:a28ac52ca127 | 885 | rx_buffer.rx_bytes_available = 0; |
| j3 | 65:a28ac52ca127 | 886 | rx_buffer.wrap_error = false; |
| IanBenzMaxim | 74:23be10c32fa3 | 887 | |
| j3 | 65:a28ac52ca127 | 888 | result = OneWireMaster::CommunicationReadError; |
| j3 | 63:422be898443a | 889 | } |
| j3 | 63:422be898443a | 890 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 891 | |
| j3 | 63:422be898443a | 892 | return result; |
| j3 | 63:422be898443a | 893 | } |
| j3 | 63:422be898443a | 894 | |
| j3 | 63:422be898443a | 895 | |
| j3 | 63:422be898443a | 896 | //********************************************************************* |
| IanBenzMaxim | 73:2cecc1372acc | 897 | void DS2480B::BreakCOM(void) |
| j3 | 63:422be898443a | 898 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 899 | while (!_p_serial->writeable()); |
| j3 | 63:422be898443a | 900 | //for some reason send_break wouldn't work unless first sending char |
| j3 | 63:422be898443a | 901 | _p_serial->putc(0); |
| j3 | 63:422be898443a | 902 | _p_serial->send_break(); |
| j3 | 63:422be898443a | 903 | } |
| j3 | 63:422be898443a | 904 | |
| j3 | 63:422be898443a | 905 | |
| IanBenzMaxim | 73:2cecc1372acc | 906 | void DS2480B::FlushCOM(void) |
| j3 | 63:422be898443a | 907 | { |
| j3 | 63:422be898443a | 908 | //reset soft rx_buffer |
| j3 | 63:422be898443a | 909 | rx_buffer.w_idx = 0; |
| j3 | 63:422be898443a | 910 | rx_buffer.r_idx = 0; |
| j3 | 63:422be898443a | 911 | rx_buffer.wrap_error = false; |
| IanBenzMaxim | 74:23be10c32fa3 | 912 | |
| j3 | 63:422be898443a | 913 | //make sure hardware rx buffer is empty |
| IanBenzMaxim | 74:23be10c32fa3 | 914 | while (_p_serial->readable()) |
| j3 | 63:422be898443a | 915 | { |
| j3 | 63:422be898443a | 916 | _p_serial->getc(); |
| j3 | 63:422be898443a | 917 | } |
| IanBenzMaxim | 74:23be10c32fa3 | 918 | |
| j3 | 65:a28ac52ca127 | 919 | /*Not sure how to flush tx buffer without sending data out on the bus. |
| j3 | 65:a28ac52ca127 | 920 | from the example in AN192, the data shouldn't be sent, just aborted |
| j3 | 65:a28ac52ca127 | 921 | and the buffer cleaned out, http://pdfserv.maximintegrated.com/en/an/AN192.pdf |
| j3 | 65:a28ac52ca127 | 922 | Below is what was used in AN192 example code using windows drivers |
| j3 | 65:a28ac52ca127 | 923 | */ |
| j3 | 65:a28ac52ca127 | 924 | |
| j3 | 65:a28ac52ca127 | 925 | //PurgeComm(ComID, PURGE_TXABORT | PURGE_RXABORT | PURGE_TXCLEAR | PURGE_RXCLEAR ); |
| j3 | 63:422be898443a | 926 | } |
| j3 | 63:422be898443a | 927 | |
| j3 | 63:422be898443a | 928 | |
| j3 | 63:422be898443a | 929 | //********************************************************************* |
| IanBenzMaxim | 73:2cecc1372acc | 930 | void DS2480B::SetBaudCOM(uint8_t new_baud) |
| j3 | 63:422be898443a | 931 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 932 | switch (new_baud) |
| j3 | 63:422be898443a | 933 | { |
| IanBenzMaxim | 75:8b627804927c | 934 | case Bps115200: |
| IanBenzMaxim | 74:23be10c32fa3 | 935 | _p_serial->baud(115200); |
| IanBenzMaxim | 74:23be10c32fa3 | 936 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 937 | |
| IanBenzMaxim | 75:8b627804927c | 938 | case Bps57600: |
| IanBenzMaxim | 74:23be10c32fa3 | 939 | _p_serial->baud(57600); |
| IanBenzMaxim | 74:23be10c32fa3 | 940 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 941 | |
| IanBenzMaxim | 75:8b627804927c | 942 | case Bps19200: |
| IanBenzMaxim | 74:23be10c32fa3 | 943 | _p_serial->baud(19200); |
| IanBenzMaxim | 74:23be10c32fa3 | 944 | break; |
| IanBenzMaxim | 74:23be10c32fa3 | 945 | |
| IanBenzMaxim | 75:8b627804927c | 946 | case Bps9600: |
| IanBenzMaxim | 74:23be10c32fa3 | 947 | default: |
| IanBenzMaxim | 74:23be10c32fa3 | 948 | _p_serial->baud(9600); |
| IanBenzMaxim | 74:23be10c32fa3 | 949 | break; |
| j3 | 63:422be898443a | 950 | } |
| j3 | 63:422be898443a | 951 | } |
| j3 | 63:422be898443a | 952 | |
| j3 | 63:422be898443a | 953 | |
| j3 | 63:422be898443a | 954 | //********************************************************************* |
| IanBenzMaxim | 73:2cecc1372acc | 955 | int32_t DS2480B::bitacc(uint32_t op, uint32_t state, uint32_t loc, uint8_t *buf) |
| j3 | 63:422be898443a | 956 | { |
| IanBenzMaxim | 74:23be10c32fa3 | 957 | int nbyt, nbit; |
| j3 | 63:422be898443a | 958 | |
| j3 | 65:a28ac52ca127 | 959 | nbyt = (loc / 8); |
| j3 | 65:a28ac52ca127 | 960 | nbit = loc - (nbyt * 8); |
| j3 | 63:422be898443a | 961 | |
| IanBenzMaxim | 74:23be10c32fa3 | 962 | if (op == WRITE_FUNCTION) |
| j3 | 65:a28ac52ca127 | 963 | { |
| j3 | 65:a28ac52ca127 | 964 | if (state) |
| j3 | 65:a28ac52ca127 | 965 | { |
| j3 | 65:a28ac52ca127 | 966 | buf[nbyt] |= (0x01 << nbit); |
| j3 | 65:a28ac52ca127 | 967 | } |
| j3 | 65:a28ac52ca127 | 968 | else |
| j3 | 65:a28ac52ca127 | 969 | { |
| j3 | 65:a28ac52ca127 | 970 | buf[nbyt] &= ~(0x01 << nbit); |
| j3 | 65:a28ac52ca127 | 971 | } |
| j3 | 63:422be898443a | 972 | |
| j3 | 65:a28ac52ca127 | 973 | return 1; |
| IanBenzMaxim | 74:23be10c32fa3 | 974 | } |
| j3 | 65:a28ac52ca127 | 975 | else |
| j3 | 65:a28ac52ca127 | 976 | { |
| j3 | 65:a28ac52ca127 | 977 | return ((buf[nbyt] >> nbit) & 0x01); |
| j3 | 65:a28ac52ca127 | 978 | } |
| IanBenzMaxim | 71:562f5c702094 | 979 | } |