Simplified access to Ramtron (Cypress) FM24Vxx F-RAM devices
FM24Vxx_I2C.cpp@2:bf7d1264d3ff, 2013-04-13 (annotated)
- Committer:
- Yann
- Date:
- Sat Apr 13 14:23:41 2013 +0000
- Revision:
- 2:bf7d1264d3ff
- Parent:
- 1:6a16bddd7222
Added new Read method from Reed Kimble request
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Yann | 0:fa858f79d48d | 1 | /* mbed simplified access to RAMTRON FV24xx Serial 3V F-RAM Memory (I2C) |
Yann | 0:fa858f79d48d | 2 | * Copyright (c) 20103 ygarcia, MIT License |
Yann | 0:fa858f79d48d | 3 | * |
Yann | 0:fa858f79d48d | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
Yann | 0:fa858f79d48d | 5 | * and associated documentation files (the "Software"), to deal in the Software without restriction, |
Yann | 0:fa858f79d48d | 6 | * including without limitation the rights to use, copy, modify, merge, publish, distribute, |
Yann | 0:fa858f79d48d | 7 | * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is |
Yann | 0:fa858f79d48d | 8 | * furnished to do so, subject to the following conditions: |
Yann | 0:fa858f79d48d | 9 | * |
Yann | 0:fa858f79d48d | 10 | * The above copyright notice and this permission notice shall be included in all copies or |
Yann | 0:fa858f79d48d | 11 | * substantial portions of the Software. |
Yann | 0:fa858f79d48d | 12 | * |
Yann | 0:fa858f79d48d | 13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
Yann | 0:fa858f79d48d | 14 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
Yann | 0:fa858f79d48d | 15 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
Yann | 0:fa858f79d48d | 16 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
Yann | 0:fa858f79d48d | 17 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
Yann | 0:fa858f79d48d | 18 | */ |
Yann | 0:fa858f79d48d | 19 | #include <iostream> |
Yann | 0:fa858f79d48d | 20 | #include <sstream> |
Yann | 0:fa858f79d48d | 21 | |
Yann | 0:fa858f79d48d | 22 | #include "FM24Vxx_I2C.h" |
Yann | 0:fa858f79d48d | 23 | |
Yann | 0:fa858f79d48d | 24 | namespace _FM24VXX_I2C { |
Yann | 0:fa858f79d48d | 25 | |
Yann | 0:fa858f79d48d | 26 | unsigned char CFM24VXX_I2C::I2CModuleRefCounter = 0; |
Yann | 0:fa858f79d48d | 27 | |
Yann | 0:fa858f79d48d | 28 | CFM24VXX_I2C::CFM24VXX_I2C(const PinName p_sda, const PinName p_scl, const unsigned char p_address, const PinName p_wp, const unsigned int p_frequency) : _internalId("") { |
Yann | 0:fa858f79d48d | 29 | DEBUG_ENTER("CFM24VXX_I2C") |
Yann | 0:fa858f79d48d | 30 | |
Yann | 0:fa858f79d48d | 31 | if (CFM24VXX_I2C::I2CModuleRefCounter != 0) { |
Yann | 0:fa858f79d48d | 32 | error("CFM24VXX_I2C: Wrong params"); |
Yann | 0:fa858f79d48d | 33 | } |
Yann | 0:fa858f79d48d | 34 | #ifdef __DEBUG |
Yann | 0:fa858f79d48d | 35 | std::ostringstream out(std::ostringstream::out); |
Yann | 0:fa858f79d48d | 36 | out << "CFM24VXX_I2C #" << CFM24VXX_I2C::I2CModuleRefCounter; |
Yann | 0:fa858f79d48d | 37 | _internalId.assign(out.str()); |
Yann | 0:fa858f79d48d | 38 | DEBUG("CFM24VXX_I2C: _internalId='%s'", _internalId.c_str()) |
Yann | 0:fa858f79d48d | 39 | #endif // __DEBUG |
Yann | 0:fa858f79d48d | 40 | _i2cInstance = new I2C(p_sda, p_scl); |
Yann | 0:fa858f79d48d | 41 | CFM24VXX_I2C::I2CModuleRefCounter += 1; |
Yann | 0:fa858f79d48d | 42 | DEBUG_ENTER("CFM24VXX_I2C: refCounter=%d", CFM24VXX_I2C::I2CModuleRefCounter) |
Yann | 0:fa858f79d48d | 43 | // Memory page select is set to 0 |
Yann | 0:fa858f79d48d | 44 | _slaveAddress = (p_address << 2) | 0xa0; // Slave address format is: 1 0 1 0 A2 A1 PS R/W, PS set to 0 |
Yann | 0:fa858f79d48d | 45 | DEBUG("CFM24VXX_I2C: I2C slave adress: 0x%02x", _slaveAddress) |
Yann | 0:fa858f79d48d | 46 | _i2cInstance->frequency(p_frequency); // Set the frequency of the I2C interface |
Yann | 0:fa858f79d48d | 47 | |
Yann | 0:fa858f79d48d | 48 | if (p_wp != NC) { |
Yann | 0:fa858f79d48d | 49 | DEBUG("CFM24VXX_I2C: WP managed"); |
Yann | 0:fa858f79d48d | 50 | _wp = new DigitalOut(p_wp); |
Yann | 0:fa858f79d48d | 51 | _wp->write(0); // Disable write protect |
Yann | 0:fa858f79d48d | 52 | } else { |
Yann | 0:fa858f79d48d | 53 | DEBUG("CFM24VXX_I2C: WP not managed"); |
Yann | 0:fa858f79d48d | 54 | _wp = NULL; // Not used |
Yann | 0:fa858f79d48d | 55 | } |
Yann | 0:fa858f79d48d | 56 | |
Yann | 0:fa858f79d48d | 57 | // Retrieve device identifiers |
Yann | 0:fa858f79d48d | 58 | _deviceID = NULL; |
Yann | 0:fa858f79d48d | 59 | GetDevideIDs(); |
Yann | 1:6a16bddd7222 | 60 | |
Yann | 1:6a16bddd7222 | 61 | _sn = NULL; |
Yann | 1:6a16bddd7222 | 62 | GetSerialNumbers(); |
Yann | 0:fa858f79d48d | 63 | |
Yann | 0:fa858f79d48d | 64 | DEBUG_LEAVE("CFM24VXX_I2C") |
Yann | 0:fa858f79d48d | 65 | } |
Yann | 0:fa858f79d48d | 66 | |
Yann | 0:fa858f79d48d | 67 | CFM24VXX_I2C::~CFM24VXX_I2C() { |
Yann | 0:fa858f79d48d | 68 | DEBUG_ENTER("~CFM24VXX_I2C") |
Yann | 0:fa858f79d48d | 69 | |
Yann | 0:fa858f79d48d | 70 | // Release I2C instance |
Yann | 0:fa858f79d48d | 71 | DEBUG_ENTER("~CFM24VXX_I2C: refCounter=%d", CFM24VXX_I2C::I2CModuleRefCounter) |
Yann | 0:fa858f79d48d | 72 | CFM24VXX_I2C::I2CModuleRefCounter -= 1; |
Yann | 0:fa858f79d48d | 73 | if (CFM24VXX_I2C::I2CModuleRefCounter == 0) { |
Yann | 0:fa858f79d48d | 74 | delete _i2cInstance; |
Yann | 0:fa858f79d48d | 75 | _i2cInstance = NULL; |
Yann | 0:fa858f79d48d | 76 | if (_deviceID != NULL) { |
Yann | 0:fa858f79d48d | 77 | delete _deviceID; |
Yann | 0:fa858f79d48d | 78 | _deviceID = NULL; |
Yann | 0:fa858f79d48d | 79 | } |
Yann | 0:fa858f79d48d | 80 | } |
Yann | 0:fa858f79d48d | 81 | // Release _wp if required |
Yann | 0:fa858f79d48d | 82 | if (_wp != NULL) { |
Yann | 0:fa858f79d48d | 83 | _wp->write(0); |
Yann | 0:fa858f79d48d | 84 | delete _wp; |
Yann | 0:fa858f79d48d | 85 | } |
Yann | 0:fa858f79d48d | 86 | |
Yann | 0:fa858f79d48d | 87 | DEBUG_LEAVE("~CFM24VXX_I2C") |
Yann | 0:fa858f79d48d | 88 | } |
Yann | 0:fa858f79d48d | 89 | |
Yann | 0:fa858f79d48d | 90 | bool CFM24VXX_I2C::WriteProtect(const bool p_writeProtect) { |
Yann | 0:fa858f79d48d | 91 | if (_wp != NULL) { |
Yann | 0:fa858f79d48d | 92 | DEBUG("WP set to: %x", (int)p_writeProtect) |
Yann | 0:fa858f79d48d | 93 | _wp->write((int)(p_writeProtect)); |
Yann | 0:fa858f79d48d | 94 | return true; |
Yann | 0:fa858f79d48d | 95 | } |
Yann | 0:fa858f79d48d | 96 | |
Yann | 0:fa858f79d48d | 97 | return false; |
Yann | 0:fa858f79d48d | 98 | } |
Yann | 0:fa858f79d48d | 99 | |
Yann | 1:6a16bddd7222 | 100 | bool CFM24VXX_I2C::GetDevideIDs() { |
Yann | 1:6a16bddd7222 | 101 | DEBUG_ENTER("CFM24VXX_I2C::GetDevideIDs") |
Yann | 1:6a16bddd7222 | 102 | |
Yann | 1:6a16bddd7222 | 103 | // 1. Memory address |
Yann | 1:6a16bddd7222 | 104 | char i2cBuffer[1]; |
Yann | 1:6a16bddd7222 | 105 | i2cBuffer[0] = (unsigned char)(_slaveAddress & 0xfc); //FIXME Change 0xfc into a const SET_PAGE_SELECT_0 |
Yann | 1:6a16bddd7222 | 106 | DEBUG("CFM24VXX_I2C::GetDevideIDs: pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 1:6a16bddd7222 | 107 | // 2. Send I2C start + 0xF8 + I2C ReStart |
Yann | 1:6a16bddd7222 | 108 | if (_i2cInstance->write(0xf8, i2cBuffer, 1, true) == 0) { |
Yann | 2:bf7d1264d3ff | 109 | //wait(0.02); |
Yann | 1:6a16bddd7222 | 110 | DEBUG("CFM24VXX_I2C::GetDevideIDs: Write F8 done") |
Yann | 1:6a16bddd7222 | 111 | // 3. read data + I2C stop |
Yann | 1:6a16bddd7222 | 112 | unsigned char buffer[3]; |
Yann | 1:6a16bddd7222 | 113 | int result = _i2cInstance->read(0xf9, (char *)buffer, 3); |
Yann | 2:bf7d1264d3ff | 114 | //wait(0.02); |
Yann | 1:6a16bddd7222 | 115 | if (result == 0) { |
Yann | 1:6a16bddd7222 | 116 | // 4. Setup the device IDs |
Yann | 1:6a16bddd7222 | 117 | _deviceID = new CFM24VXX_IDs(buffer[0], buffer[1], buffer[2]); |
Yann | 1:6a16bddd7222 | 118 | DEBUG("CFM24VXX_I2C::GetDevideIDs: %02x - %02x - %02x", buffer[0], buffer[1], buffer[2]) |
Yann | 1:6a16bddd7222 | 119 | |
Yann | 1:6a16bddd7222 | 120 | DEBUG_LEAVE("CFM24VXX_I2C::GetDevideIDs: %x", (bool)(result == 0)) |
Yann | 1:6a16bddd7222 | 121 | return (bool)(result == 0); |
Yann | 1:6a16bddd7222 | 122 | } |
Yann | 1:6a16bddd7222 | 123 | } |
Yann | 1:6a16bddd7222 | 124 | |
Yann | 1:6a16bddd7222 | 125 | _deviceID = new CFM24VXX_IDs(0xff, 0xff, 0xff); |
Yann | 1:6a16bddd7222 | 126 | DEBUG_LEAVE("CFM24VXX_I2C::GetDevideIDs (false)") |
Yann | 1:6a16bddd7222 | 127 | return false; |
Yann | 0:fa858f79d48d | 128 | } |
Yann | 0:fa858f79d48d | 129 | |
Yann | 1:6a16bddd7222 | 130 | bool CFM24VXX_I2C::GetSerialNumbers() { |
Yann | 1:6a16bddd7222 | 131 | DEBUG_ENTER("CFM24VXX_I2C::GetSerialNumber") |
Yann | 1:6a16bddd7222 | 132 | // 1. Memory address |
Yann | 1:6a16bddd7222 | 133 | char i2cBuffer[1]; |
Yann | 1:6a16bddd7222 | 134 | i2cBuffer[0] = (unsigned char)(_slaveAddress & 0xfc); //FIXME Change 0xfc into a const SET_PAGE_SELECT_0 |
Yann | 1:6a16bddd7222 | 135 | DEBUG("CFM24VXX_I2C::GetSerialNumber: pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 1:6a16bddd7222 | 136 | // 2. Send I2C start + 0xF8 + I2C ReStart |
Yann | 1:6a16bddd7222 | 137 | if (_i2cInstance->write(0xf8, i2cBuffer, 1, true) == 0) { |
Yann | 2:bf7d1264d3ff | 138 | //wait(0.02); |
Yann | 1:6a16bddd7222 | 139 | DEBUG("CFM24VXX_I2C::GetSerialNumber: Write F8 done") |
Yann | 1:6a16bddd7222 | 140 | // 3. read data + I2C stop |
Yann | 1:6a16bddd7222 | 141 | unsigned char buffer[8]; // See FM24V10_ds.pdf Page 10/16 Figure 15. 8-Byte Serial Number (read-only) |
Yann | 1:6a16bddd7222 | 142 | int result = _i2cInstance->read(0xcd, (char *)buffer, 8); |
Yann | 2:bf7d1264d3ff | 143 | //wait(0.02); |
Yann | 1:6a16bddd7222 | 144 | if (result == 0) { |
Yann | 1:6a16bddd7222 | 145 | // 4. Check if it is supported |
Yann | 1:6a16bddd7222 | 146 | if (buffer[7] != 0x00) { // SN supported |
Yann | 1:6a16bddd7222 | 147 | // 5. Compute CRC |
Yann | 1:6a16bddd7222 | 148 | unsigned char crc = ChecksumSN(buffer); |
Yann | 1:6a16bddd7222 | 149 | // 6. Check CRCs |
Yann | 1:6a16bddd7222 | 150 | if (buffer[7] == crc) { |
Yann | 1:6a16bddd7222 | 151 | _sn = new CFM24VXX_SN(buffer); |
Yann | 1:6a16bddd7222 | 152 | DEBUG_LEAVE("CFM24VXX_I2C::GetSerialNumber: true") |
Yann | 1:6a16bddd7222 | 153 | return true; |
Yann | 1:6a16bddd7222 | 154 | } else { // SN supported |
Yann | 1:6a16bddd7222 | 155 | DEBUG_LEAVE("CFM24VXX_I2C::GetSerialNumber: Checksum mismatch") |
Yann | 1:6a16bddd7222 | 156 | return false; |
Yann | 1:6a16bddd7222 | 157 | } |
Yann | 1:6a16bddd7222 | 158 | } else { // SN supported |
Yann | 1:6a16bddd7222 | 159 | DEBUG_LEAVE("CFM24VXX_I2C::GetSerialNumber: Serial number not supported") |
Yann | 1:6a16bddd7222 | 160 | return true; |
Yann | 1:6a16bddd7222 | 161 | } |
Yann | 1:6a16bddd7222 | 162 | } |
Yann | 1:6a16bddd7222 | 163 | } |
Yann | 1:6a16bddd7222 | 164 | |
Yann | 1:6a16bddd7222 | 165 | DEBUG_LEAVE("CFM24VXX_I2C::GetSerialNumber (false)") |
Yann | 1:6a16bddd7222 | 166 | return false; |
Yann | 1:6a16bddd7222 | 167 | } |
Yann | 1:6a16bddd7222 | 168 | |
Yann | 0:fa858f79d48d | 169 | bool CFM24VXX_I2C::EraseMemoryArea(const short p_startAddress, const int p_count, const unsigned char p_pattern) { |
Yann | 0:fa858f79d48d | 170 | DEBUG_ENTER("CFM24VXX_I2C::EraseMemoryArea: 0x%02x - %d - 0x%02x", p_startAddress, p_count, p_pattern) |
Yann | 0:fa858f79d48d | 171 | |
Yann | 0:fa858f79d48d | 172 | std::vector<unsigned char> eraseBuffer(p_count, p_pattern); |
Yann | 0:fa858f79d48d | 173 | return Write(p_startAddress, eraseBuffer, false); |
Yann | 0:fa858f79d48d | 174 | } |
Yann | 0:fa858f79d48d | 175 | |
Yann | 0:fa858f79d48d | 176 | bool CFM24VXX_I2C::Write(const short p_address, const unsigned char p_byte) { |
Yann | 0:fa858f79d48d | 177 | DEBUG_ENTER("CFM24VXX_I2C::Write (byte): Memory address: 0x%02x - 0x%02x", p_address, p_byte) |
Yann | 0:fa858f79d48d | 178 | |
Yann | 0:fa858f79d48d | 179 | // 1.Prepare buffer |
Yann | 0:fa858f79d48d | 180 | char i2cBuffer[3]; // Memory address + one byte of data |
Yann | 0:fa858f79d48d | 181 | // 1.1. Memory address |
Yann | 0:fa858f79d48d | 182 | short address = p_address + 1; // Index start to 1 |
Yann | 0:fa858f79d48d | 183 | i2cBuffer[0] = (unsigned char)(address >> 8); |
Yann | 0:fa858f79d48d | 184 | DEBUG("CFM24VXX_I2C::Write (byte): pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 0:fa858f79d48d | 185 | i2cBuffer[1] = (unsigned char)((unsigned char)address & 0xff); |
Yann | 0:fa858f79d48d | 186 | DEBUG("CFM24VXX_I2C::Write (byte): pI2CBuffer[1]: 0x%02x", i2cBuffer[1]) |
Yann | 0:fa858f79d48d | 187 | // 1.2. Datas |
Yann | 0:fa858f79d48d | 188 | i2cBuffer[2] = p_byte; |
Yann | 0:fa858f79d48d | 189 | DEBUG("CFM24VXX_I2C::Write (byte): value=0x%02x", i2cBuffer[2]) |
Yann | 0:fa858f79d48d | 190 | |
Yann | 0:fa858f79d48d | 191 | // 2. Send I2C start + I2C address + Memory Address + Datas + I2C stop |
Yann | 0:fa858f79d48d | 192 | int result = _i2cInstance->write(_slaveAddress, i2cBuffer, 3); |
Yann | 2:bf7d1264d3ff | 193 | //wait(0.02); |
Yann | 0:fa858f79d48d | 194 | |
Yann | 0:fa858f79d48d | 195 | DEBUG_LEAVE("CFM24VXX_I2C::Write (byte) %x", (bool)(result == 0)) |
Yann | 0:fa858f79d48d | 196 | return (bool)(result == 0); |
Yann | 0:fa858f79d48d | 197 | } |
Yann | 0:fa858f79d48d | 198 | |
Yann | 0:fa858f79d48d | 199 | bool CFM24VXX_I2C::Write(const short p_address, const short p_short, const CFM24VXX_I2C::Mode p_mode) { |
Yann | 0:fa858f79d48d | 200 | DEBUG_ENTER("CFM24VXX_I2C::Write (short): Memory address:0x%02x, Mode:%d", p_address, p_mode) |
Yann | 0:fa858f79d48d | 201 | |
Yann | 0:fa858f79d48d | 202 | // 1.Prepare buffer |
Yann | 0:fa858f79d48d | 203 | char i2cBuffer[4]; // Memory address + one short (2 bytes) |
Yann | 0:fa858f79d48d | 204 | // 1.1. Memory address |
Yann | 0:fa858f79d48d | 205 | short address = p_address + 1; // Index start to 1 |
Yann | 0:fa858f79d48d | 206 | i2cBuffer[0] = (unsigned char)(address >> 8); |
Yann | 0:fa858f79d48d | 207 | DEBUG("CFM24VXX_I2C::Write (short): pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 0:fa858f79d48d | 208 | i2cBuffer[1] = (unsigned char)((unsigned char)address & 0xff); |
Yann | 0:fa858f79d48d | 209 | DEBUG("CFM24VXX_I2C::Write (short): pI2CBuffer[1]: 0x%02x", i2cBuffer[1]) |
Yann | 0:fa858f79d48d | 210 | // 1.2. Datas |
Yann | 0:fa858f79d48d | 211 | if (p_mode == BigEndian) { |
Yann | 0:fa858f79d48d | 212 | i2cBuffer[2] = (unsigned char)(p_short >> 8); |
Yann | 0:fa858f79d48d | 213 | i2cBuffer[3] = (unsigned char)((unsigned char)p_short & 0xff); |
Yann | 0:fa858f79d48d | 214 | } else { |
Yann | 0:fa858f79d48d | 215 | i2cBuffer[2] = (unsigned char)((unsigned char)p_short & 0xff); |
Yann | 0:fa858f79d48d | 216 | i2cBuffer[3] = (unsigned char)(p_short >> 8); |
Yann | 0:fa858f79d48d | 217 | } |
Yann | 0:fa858f79d48d | 218 | DEBUG("CFM24VXX_I2C::Write (short): value=0x%02x%02x", i2cBuffer[2], i2cBuffer[3]) |
Yann | 0:fa858f79d48d | 219 | |
Yann | 0:fa858f79d48d | 220 | // 2. Send I2C start + I2C address + Memory Address + Datas + I2C stop |
Yann | 0:fa858f79d48d | 221 | int result = _i2cInstance->write(_slaveAddress, i2cBuffer, 4); |
Yann | 2:bf7d1264d3ff | 222 | //wait(0.02); |
Yann | 0:fa858f79d48d | 223 | |
Yann | 0:fa858f79d48d | 224 | DEBUG_LEAVE("CFM24VXX_I2C::Write (short) %x", (bool)(result == 0)) |
Yann | 0:fa858f79d48d | 225 | return (bool)(result == 0); |
Yann | 0:fa858f79d48d | 226 | } |
Yann | 0:fa858f79d48d | 227 | |
Yann | 0:fa858f79d48d | 228 | bool CFM24VXX_I2C::Write(const short p_address, const int p_int, const CFM24VXX_I2C::Mode p_mode) { |
Yann | 0:fa858f79d48d | 229 | DEBUG_ENTER("CFM24VXX_I2C::Write (int): Memory address:0x%02x, Mode:%d", p_address, p_mode) |
Yann | 0:fa858f79d48d | 230 | |
Yann | 0:fa858f79d48d | 231 | // 1.Prepare buffer |
Yann | 0:fa858f79d48d | 232 | char i2cBuffer[6]; // Memory address + one integer (4 bytes) |
Yann | 0:fa858f79d48d | 233 | // 1.1. Memory address |
Yann | 0:fa858f79d48d | 234 | short address = p_address + 1; // Index start to 1 |
Yann | 0:fa858f79d48d | 235 | i2cBuffer[0] = (unsigned char)(address >> 8); |
Yann | 0:fa858f79d48d | 236 | DEBUG("CFM24VXX_I2C::Write (int): pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 0:fa858f79d48d | 237 | i2cBuffer[1] = (unsigned char)((unsigned char)address & 0xff); |
Yann | 0:fa858f79d48d | 238 | DEBUG("CFM24VXX_I2C::Write (int): pI2CBuffer[1]: 0x%02x", i2cBuffer[1]) |
Yann | 0:fa858f79d48d | 239 | // 1.2. Datas |
Yann | 0:fa858f79d48d | 240 | if (p_mode == BigEndian) { |
Yann | 0:fa858f79d48d | 241 | i2cBuffer[2] = (unsigned char)(p_int >> 24); |
Yann | 0:fa858f79d48d | 242 | i2cBuffer[3] = (unsigned char)(p_int >> 16); |
Yann | 0:fa858f79d48d | 243 | i2cBuffer[4] = (unsigned char)(p_int >> 8); |
Yann | 0:fa858f79d48d | 244 | i2cBuffer[5] = (unsigned char)((unsigned char)p_int & 0xff); |
Yann | 0:fa858f79d48d | 245 | } else { |
Yann | 0:fa858f79d48d | 246 | i2cBuffer[2] = (unsigned char)((unsigned char)p_int & 0xff); |
Yann | 0:fa858f79d48d | 247 | i2cBuffer[3] = (unsigned char)(p_int >> 8); |
Yann | 0:fa858f79d48d | 248 | i2cBuffer[4] = (unsigned char)(p_int >> 16); |
Yann | 0:fa858f79d48d | 249 | i2cBuffer[5] = (unsigned char)(p_int >> 24); |
Yann | 0:fa858f79d48d | 250 | } |
Yann | 0:fa858f79d48d | 251 | DEBUG("CFM24VXX_I2C::Write (int): value=0x%02x%02x%02x%02x", i2cBuffer[2], i2cBuffer[3], i2cBuffer[4], i2cBuffer[5]) |
Yann | 0:fa858f79d48d | 252 | |
Yann | 0:fa858f79d48d | 253 | // 2. Send I2C start + I2C address + Memory Address + Datas + I2C stop |
Yann | 0:fa858f79d48d | 254 | int result = _i2cInstance->write(_slaveAddress, i2cBuffer, 6); |
Yann | 2:bf7d1264d3ff | 255 | //wait(0.02); |
Yann | 0:fa858f79d48d | 256 | |
Yann | 0:fa858f79d48d | 257 | DEBUG_LEAVE("CFM24VXX_I2C::Write (int) %x", (bool)(result == 0)) |
Yann | 0:fa858f79d48d | 258 | return (bool)(result == 0); |
Yann | 0:fa858f79d48d | 259 | } |
Yann | 0:fa858f79d48d | 260 | |
Yann | 0:fa858f79d48d | 261 | bool CFM24VXX_I2C::Write(const short p_address, const std::string & p_string, const bool p_storeLength, const int p_length2write) { |
Yann | 0:fa858f79d48d | 262 | DEBUG_ENTER("CFM24VXX_I2C::Write (std::string)") |
Yann | 0:fa858f79d48d | 263 | return Write(p_address, p_string.c_str(), p_storeLength, p_length2write); |
Yann | 0:fa858f79d48d | 264 | } |
Yann | 0:fa858f79d48d | 265 | |
Yann | 0:fa858f79d48d | 266 | bool CFM24VXX_I2C::Write(const short p_address, const std::vector<unsigned char> & p_datas, const bool p_storeLength, const int p_length2write) { |
Yann | 0:fa858f79d48d | 267 | DEBUG_ENTER("CFM24VXX_I2C::Write (std::vector)") |
Yann | 0:fa858f79d48d | 268 | |
Yann | 0:fa858f79d48d | 269 | int length = (p_length2write == -1) ? p_datas.size() : p_length2write; |
Yann | 0:fa858f79d48d | 270 | unsigned char array[length]; |
Yann | 0:fa858f79d48d | 271 | std::copy(p_datas.begin(), p_datas.end(), array); |
Yann | 0:fa858f79d48d | 272 | bool result = Write(p_address, array, p_storeLength, length); |
Yann | 2:bf7d1264d3ff | 273 | //wait(0.02); |
Yann | 0:fa858f79d48d | 274 | |
Yann | 0:fa858f79d48d | 275 | DEBUG_LEAVE("CFM24VXX_I2C::Write (std::vector): %d", result) |
Yann | 0:fa858f79d48d | 276 | return result; |
Yann | 0:fa858f79d48d | 277 | } |
Yann | 0:fa858f79d48d | 278 | |
Yann | 2:bf7d1264d3ff | 279 | bool CFM24VXX_I2C::Write(const short p_address, const char *p_string, const bool p_storeLength, const int p_length2write) { |
Yann | 0:fa858f79d48d | 280 | DEBUG_ENTER("CFM24VXX_I2C::Write (char *): Memory address: 0x%02x - %x - %d", p_address, p_storeLength, p_length2write) |
Yann | 0:fa858f79d48d | 281 | |
Yann | 1:6a16bddd7222 | 282 | DEBUG("CFM24VXX_I2C::Write (char *): Slave address: %02x", _slaveAddress) |
Yann | 0:fa858f79d48d | 283 | // 1.Prepare buffer |
Yann | 2:bf7d1264d3ff | 284 | int length = (p_length2write == -1) ? strlen(p_string) : p_length2write; |
Yann | 0:fa858f79d48d | 285 | if (p_storeLength) { |
Yann | 0:fa858f79d48d | 286 | length += 4; // Add four bytes for the length as integer |
Yann | 0:fa858f79d48d | 287 | } |
Yann | 0:fa858f79d48d | 288 | DEBUG("CFM24VXX_I2C::Write (char *): length:%d", length) |
Yann | 0:fa858f79d48d | 289 | |
Yann | 0:fa858f79d48d | 290 | char i2cBuffer[2 + length]; |
Yann | 0:fa858f79d48d | 291 | // 1.1. Memory address |
Yann | 0:fa858f79d48d | 292 | short address = p_address + 1; |
Yann | 0:fa858f79d48d | 293 | i2cBuffer[0] = (unsigned char)(address >> 8); |
Yann | 0:fa858f79d48d | 294 | DEBUG("CFM24VXX_I2C::Write (char *): pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 0:fa858f79d48d | 295 | i2cBuffer[1] = (unsigned char)((unsigned char)address & 0xff); |
Yann | 0:fa858f79d48d | 296 | DEBUG("CFM24VXX_I2C::Write (char *): pI2CBuffer[1]: 0x%02x", i2cBuffer[1]) |
Yann | 0:fa858f79d48d | 297 | // 1.2. Datas |
Yann | 0:fa858f79d48d | 298 | if (p_storeLength) { |
Yann | 0:fa858f79d48d | 299 | // Fill the length |
Yann | 0:fa858f79d48d | 300 | i2cBuffer[2] = (unsigned char)(length >> 24); |
Yann | 0:fa858f79d48d | 301 | i2cBuffer[3] = (unsigned char)(length >> 16); |
Yann | 0:fa858f79d48d | 302 | i2cBuffer[4] = (unsigned char)(length >> 8); |
Yann | 0:fa858f79d48d | 303 | i2cBuffer[5] = (unsigned char)((unsigned char)length & 0xff); |
Yann | 0:fa858f79d48d | 304 | for (int i = 0; i < length - 4; i++) { |
Yann | 2:bf7d1264d3ff | 305 | i2cBuffer[6 + i] = *(p_string + i); |
Yann | 0:fa858f79d48d | 306 | } |
Yann | 0:fa858f79d48d | 307 | } else { // The length was not stored |
Yann | 0:fa858f79d48d | 308 | for (int i = 0; i < length; i++) { |
Yann | 2:bf7d1264d3ff | 309 | i2cBuffer[2 + i] = *(p_string + i); |
Yann | 0:fa858f79d48d | 310 | } |
Yann | 0:fa858f79d48d | 311 | } |
Yann | 0:fa858f79d48d | 312 | |
Yann | 0:fa858f79d48d | 313 | // 2. Send I2C start + I2C address + Memory Address + Datas + I2C stop |
Yann | 0:fa858f79d48d | 314 | int result = _i2cInstance->write(_slaveAddress, i2cBuffer, 2 + length); |
Yann | 2:bf7d1264d3ff | 315 | //wait(0.02); |
Yann | 0:fa858f79d48d | 316 | |
Yann | 0:fa858f79d48d | 317 | DEBUG_LEAVE("CFM24VXX_I2C::Write (char *) %x", (bool)(result == 0)) |
Yann | 0:fa858f79d48d | 318 | return (bool)(result == 0); |
Yann | 0:fa858f79d48d | 319 | } |
Yann | 0:fa858f79d48d | 320 | |
Yann | 0:fa858f79d48d | 321 | bool CFM24VXX_I2C::Write(const short p_address, const unsigned char *p_datas, const bool p_storeLength, const int p_length2write) { |
Yann | 0:fa858f79d48d | 322 | DEBUG_ENTER("CFM24VXX_I2C::Write (byte *): Memory address: 0x%02x - %x - %d", p_address, p_storeLength, p_length2write) |
Yann | 0:fa858f79d48d | 323 | return Write(p_address, (const char *)p_datas, p_storeLength, p_length2write); |
Yann | 0:fa858f79d48d | 324 | } |
Yann | 0:fa858f79d48d | 325 | |
Yann | 0:fa858f79d48d | 326 | bool CFM24VXX_I2C::Read(const short p_address, unsigned char * p_byte) { |
Yann | 0:fa858f79d48d | 327 | DEBUG_ENTER("CFM24VXX_I2C::Read (byte): Memory address:0x%02x", p_address) |
Yann | 0:fa858f79d48d | 328 | |
Yann | 0:fa858f79d48d | 329 | // 1.Prepare buffer |
Yann | 0:fa858f79d48d | 330 | char i2cBuffer[2]; |
Yann | 0:fa858f79d48d | 331 | // 1.1. Memory address |
Yann | 0:fa858f79d48d | 332 | i2cBuffer[0] = (unsigned char)(p_address >> 8); |
Yann | 0:fa858f79d48d | 333 | DEBUG("CFM24VXX_I2C::Read (byte): pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 0:fa858f79d48d | 334 | i2cBuffer[1] = (unsigned char)((unsigned char)p_address & 0xff); |
Yann | 0:fa858f79d48d | 335 | DEBUG("CFM24VXX_I2C::Read (byte): pI2CBuffer[1]: 0x%02x", i2cBuffer[1]) |
Yann | 0:fa858f79d48d | 336 | |
Yann | 0:fa858f79d48d | 337 | // 2. Send I2C start + memory address |
Yann | 0:fa858f79d48d | 338 | if (_i2cInstance->write(_slaveAddress, i2cBuffer, 2, true) == 0) { |
Yann | 2:bf7d1264d3ff | 339 | //wait(0.02); |
Yann | 0:fa858f79d48d | 340 | DEBUG("CFM24VXX_I2C::Read (byte): Write memory done") |
Yann | 0:fa858f79d48d | 341 | // 2. Read data + I2C stop |
Yann | 0:fa858f79d48d | 342 | int result = _i2cInstance->read(_slaveAddress, (char *)p_byte, 1); |
Yann | 2:bf7d1264d3ff | 343 | //wait(0.02); |
Yann | 0:fa858f79d48d | 344 | |
Yann | 0:fa858f79d48d | 345 | DEBUG_LEAVE("CFM24VXX_I2C::Read (byte): %x", (bool)(result == 0)) |
Yann | 0:fa858f79d48d | 346 | return (bool)(result == 0); |
Yann | 0:fa858f79d48d | 347 | } |
Yann | 0:fa858f79d48d | 348 | |
Yann | 0:fa858f79d48d | 349 | DEBUG_LEAVE("CFM24VXX_I2C::Read (byte) (false)") |
Yann | 0:fa858f79d48d | 350 | return false; |
Yann | 0:fa858f79d48d | 351 | } |
Yann | 0:fa858f79d48d | 352 | |
Yann | 0:fa858f79d48d | 353 | bool CFM24VXX_I2C::Read(const short p_address, short *p_short, const CFM24VXX_I2C::Mode p_mode) { |
Yann | 0:fa858f79d48d | 354 | DEBUG_ENTER("CFM24VXX_I2C::Read (short): Memory address:0x%02x, Mode:%d", p_address, p_mode) |
Yann | 0:fa858f79d48d | 355 | |
Yann | 0:fa858f79d48d | 356 | // 1.Prepare buffer |
Yann | 0:fa858f79d48d | 357 | char i2cBuffer[2]; |
Yann | 0:fa858f79d48d | 358 | // 1.1. Memory address |
Yann | 0:fa858f79d48d | 359 | i2cBuffer[0] = (unsigned char)(p_address >> 8); |
Yann | 0:fa858f79d48d | 360 | DEBUG("CFM24VXX_I2C::Read (short): pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 0:fa858f79d48d | 361 | i2cBuffer[1] = (unsigned char)((unsigned char)p_address & 0xff); |
Yann | 0:fa858f79d48d | 362 | DEBUG("CFM24VXX_I2C::Read (short): pI2CBuffer[1]: 0x%02x", i2cBuffer[1]) |
Yann | 0:fa858f79d48d | 363 | |
Yann | 0:fa858f79d48d | 364 | // 2. Send I2C start + memory address |
Yann | 0:fa858f79d48d | 365 | if (_i2cInstance->write(_slaveAddress, i2cBuffer, 2, true) == 0) { |
Yann | 2:bf7d1264d3ff | 366 | //wait(0.02); |
Yann | 0:fa858f79d48d | 367 | DEBUG("CFM24VXX_I2C::Read (short): Write memory done") |
Yann | 0:fa858f79d48d | 368 | // 2. Read data + I2C stop |
Yann | 0:fa858f79d48d | 369 | int result = _i2cInstance->read(_slaveAddress, i2cBuffer, 2); |
Yann | 0:fa858f79d48d | 370 | if (result == 0) { |
Yann | 1:6a16bddd7222 | 371 | DEBUG("CFM24VXX_I2C::Read (short): value: 0x%02x - 0x%02x", i2cBuffer[0], i2cBuffer[1]) |
Yann | 0:fa858f79d48d | 372 | if (p_mode == BigEndian) { |
Yann | 0:fa858f79d48d | 373 | *p_short = (short)(i2cBuffer[0] << 8 | i2cBuffer[1]); |
Yann | 0:fa858f79d48d | 374 | } else { |
Yann | 0:fa858f79d48d | 375 | *p_short = (short)(i2cBuffer[1] << 8 | i2cBuffer[0]); |
Yann | 0:fa858f79d48d | 376 | } |
Yann | 0:fa858f79d48d | 377 | |
Yann | 0:fa858f79d48d | 378 | DEBUG_LEAVE("CFM24VXX_I2C::Read (short): 0x%04x", *p_short) |
Yann | 0:fa858f79d48d | 379 | return true; |
Yann | 0:fa858f79d48d | 380 | } |
Yann | 0:fa858f79d48d | 381 | } |
Yann | 0:fa858f79d48d | 382 | |
Yann | 0:fa858f79d48d | 383 | DEBUG_LEAVE("CFM24VXX_I2C::Read (short) (false)") |
Yann | 0:fa858f79d48d | 384 | return false; |
Yann | 0:fa858f79d48d | 385 | } |
Yann | 0:fa858f79d48d | 386 | |
Yann | 0:fa858f79d48d | 387 | bool CFM24VXX_I2C::Read(const short p_address, int *p_int, const CFM24VXX_I2C::Mode p_mode) { |
Yann | 0:fa858f79d48d | 388 | DEBUG_ENTER("CFM24VXX_I2C::Read (int): Memory address:0x%02x, Mode:%d", p_address, p_mode) |
Yann | 0:fa858f79d48d | 389 | |
Yann | 0:fa858f79d48d | 390 | // 1.Prepare buffer |
Yann | 0:fa858f79d48d | 391 | char i2cBuffer[4]; |
Yann | 0:fa858f79d48d | 392 | // 1.1. Memory address |
Yann | 0:fa858f79d48d | 393 | i2cBuffer[0] = (unsigned char)(p_address >> 8); |
Yann | 0:fa858f79d48d | 394 | DEBUG("CFM24VXX_I2C::Read (int): pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 0:fa858f79d48d | 395 | i2cBuffer[1] = (unsigned char)((unsigned char)p_address & 0xff); |
Yann | 0:fa858f79d48d | 396 | DEBUG("CFM24VXX_I2C::Read (int): pI2CBuffer[1]: 0x%02x", i2cBuffer[1]) |
Yann | 0:fa858f79d48d | 397 | |
Yann | 0:fa858f79d48d | 398 | // 2. Send I2C start + memory address |
Yann | 0:fa858f79d48d | 399 | if (_i2cInstance->write(_slaveAddress, i2cBuffer, 2, true) == 0) { |
Yann | 2:bf7d1264d3ff | 400 | //wait(0.02); |
Yann | 0:fa858f79d48d | 401 | DEBUG("CFM24VXX_I2C::Read (int): Write memory done") |
Yann | 0:fa858f79d48d | 402 | // 2. Read data + I2C stop |
Yann | 0:fa858f79d48d | 403 | int result = _i2cInstance->read(_slaveAddress, i2cBuffer, 4); |
Yann | 0:fa858f79d48d | 404 | if (result == 0) { |
Yann | 1:6a16bddd7222 | 405 | DEBUG("CFM24VXX_I2C::Read (int): value: 0x%02x - 0x%02x - 0x%02x - 0x%02x", i2cBuffer[0], i2cBuffer[1], i2cBuffer[2], i2cBuffer[3]) |
Yann | 2:bf7d1264d3ff | 406 | //wait(0.02); |
Yann | 0:fa858f79d48d | 407 | if (p_mode == BigEndian) { |
Yann | 0:fa858f79d48d | 408 | *p_int = (int)(i2cBuffer[0] << 24 | i2cBuffer[1] << 16 | i2cBuffer[2] << 8 | i2cBuffer[3]); |
Yann | 0:fa858f79d48d | 409 | } else { |
Yann | 0:fa858f79d48d | 410 | *p_int = (int)(i2cBuffer[3] << 24 | i2cBuffer[2] << 16 | i2cBuffer[1] << 8 | i2cBuffer[0]); |
Yann | 0:fa858f79d48d | 411 | } |
Yann | 0:fa858f79d48d | 412 | |
Yann | 0:fa858f79d48d | 413 | DEBUG_LEAVE("CFM24VXX_I2C::Read (int): %d", *p_int) |
Yann | 0:fa858f79d48d | 414 | return true; |
Yann | 0:fa858f79d48d | 415 | } |
Yann | 0:fa858f79d48d | 416 | |
Yann | 0:fa858f79d48d | 417 | DEBUG_LEAVE("CFM24VXX_I2C::Read (int):false") |
Yann | 0:fa858f79d48d | 418 | return false; |
Yann | 0:fa858f79d48d | 419 | } |
Yann | 0:fa858f79d48d | 420 | |
Yann | 0:fa858f79d48d | 421 | DEBUG_LEAVE("CFM24VXX_I2C::Read (int) (false)") |
Yann | 0:fa858f79d48d | 422 | return false; |
Yann | 0:fa858f79d48d | 423 | } |
Yann | 0:fa858f79d48d | 424 | |
Yann | 0:fa858f79d48d | 425 | bool CFM24VXX_I2C::Read(const short p_address, std::vector<unsigned char> & p_datas, const bool p_readLengthFirst, const int p_length2write) { |
Yann | 0:fa858f79d48d | 426 | DEBUG_ENTER("CFM24VXX_I2C::Read (vector): Memory address:0x%02x, readLength:%01x, Length:%d", p_address, p_readLengthFirst, p_length2write) |
Yann | 0:fa858f79d48d | 427 | |
Yann | 0:fa858f79d48d | 428 | // 1.Prepare buffer |
Yann | 0:fa858f79d48d | 429 | short address = p_address; |
Yann | 0:fa858f79d48d | 430 | int length = 0; |
Yann | 0:fa858f79d48d | 431 | if (p_readLengthFirst) { |
Yann | 0:fa858f79d48d | 432 | if (!Read(address, &length)) { // Read the length in big endian mode |
Yann | 0:fa858f79d48d | 433 | DEBUG_LEAVE("CFM24VXX_I2C::Read (vector) Failed to read length") |
Yann | 0:fa858f79d48d | 434 | return false; |
Yann | 0:fa858f79d48d | 435 | } |
Yann | 0:fa858f79d48d | 436 | DEBUG("CFM24VXX_I2C::Read (vector): length= %d", length) |
Yann | 0:fa858f79d48d | 437 | if (length == 0) { |
Yann | 0:fa858f79d48d | 438 | return true; |
Yann | 0:fa858f79d48d | 439 | } |
Yann | 0:fa858f79d48d | 440 | address += 4; // Skip the length value |
Yann | 0:fa858f79d48d | 441 | length -= 4; // length is the size of (string length + string) |
Yann | 0:fa858f79d48d | 442 | } else { |
Yann | 0:fa858f79d48d | 443 | if (p_length2write == -1) { |
Yann | 0:fa858f79d48d | 444 | length = p_datas.size(); |
Yann | 0:fa858f79d48d | 445 | } else { |
Yann | 0:fa858f79d48d | 446 | length = p_length2write; |
Yann | 0:fa858f79d48d | 447 | } |
Yann | 0:fa858f79d48d | 448 | } |
Yann | 0:fa858f79d48d | 449 | DEBUG("CFM24VXX_I2C::Read (vector): length= %d", length) |
Yann | 0:fa858f79d48d | 450 | |
Yann | 0:fa858f79d48d | 451 | // 2. Memory address |
Yann | 0:fa858f79d48d | 452 | char i2cBuffer[2]; |
Yann | 0:fa858f79d48d | 453 | i2cBuffer[0] = (unsigned char)(address >> 8); |
Yann | 0:fa858f79d48d | 454 | DEBUG("CFM24VXX_I2C::Read (vector): pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 0:fa858f79d48d | 455 | i2cBuffer[1] = (unsigned char)((unsigned char)address & 0xff); |
Yann | 0:fa858f79d48d | 456 | DEBUG("CFM24VXX_I2C::Read (vector): pI2CBuffer[1]: 0x%02x", i2cBuffer[1]) |
Yann | 0:fa858f79d48d | 457 | |
Yann | 0:fa858f79d48d | 458 | // 3. Send I2C start + memory address |
Yann | 0:fa858f79d48d | 459 | if (_i2cInstance->write(_slaveAddress, i2cBuffer, 2, true) == 0) { |
Yann | 2:bf7d1264d3ff | 460 | //wait(0.02); |
Yann | 0:fa858f79d48d | 461 | DEBUG("CFM24VXX_I2C::Read (vector): Write memory done") |
Yann | 0:fa858f79d48d | 462 | // 4. read data + I2C stop |
Yann | 0:fa858f79d48d | 463 | unsigned char buffer[length]; |
Yann | 0:fa858f79d48d | 464 | int result = _i2cInstance->read(_slaveAddress, (char *)buffer, length); |
Yann | 2:bf7d1264d3ff | 465 | //wait(0.02); |
Yann | 0:fa858f79d48d | 466 | if (result == 0) { |
Yann | 0:fa858f79d48d | 467 | p_datas.assign(buffer, buffer + length); |
Yann | 0:fa858f79d48d | 468 | |
Yann | 0:fa858f79d48d | 469 | DEBUG_LEAVE("CFM24VXX_I2C::Read (vector): %x", (bool)(result == 0)) |
Yann | 0:fa858f79d48d | 470 | return (bool)(result == 0); |
Yann | 0:fa858f79d48d | 471 | } |
Yann | 0:fa858f79d48d | 472 | } |
Yann | 0:fa858f79d48d | 473 | |
Yann | 0:fa858f79d48d | 474 | DEBUG_LEAVE("CFM24VXX_I2C::Read (vector) (false)") |
Yann | 0:fa858f79d48d | 475 | return false; |
Yann | 0:fa858f79d48d | 476 | } |
Yann | 0:fa858f79d48d | 477 | |
Yann | 0:fa858f79d48d | 478 | bool CFM24VXX_I2C::Read(const short p_address, std::string & p_string, const bool p_readLengthFirst, const int p_length2write) { |
Yann | 0:fa858f79d48d | 479 | DEBUG_ENTER("CFM24VXX_I2C::Read (string): Memory address:0x%02x, readLength:%01x, Length:%d", p_address, p_readLengthFirst, p_length2write) |
Yann | 0:fa858f79d48d | 480 | |
Yann | 0:fa858f79d48d | 481 | // 1.Prepare buffer |
Yann | 0:fa858f79d48d | 482 | short address = p_address; |
Yann | 0:fa858f79d48d | 483 | int length = -1; |
Yann | 0:fa858f79d48d | 484 | if (p_readLengthFirst) { // The string was stored with its length |
Yann | 0:fa858f79d48d | 485 | if (!Read(address, &length)) { // Read the length as integer in big endian mode |
Yann | 0:fa858f79d48d | 486 | DEBUG_ERROR("CFM24VXX_I2C::Read (string): Failed to read length") |
Yann | 0:fa858f79d48d | 487 | return false; |
Yann | 0:fa858f79d48d | 488 | } |
Yann | 2:bf7d1264d3ff | 489 | //wait(0.02); |
Yann | 0:fa858f79d48d | 490 | DEBUG("CFM24VXX_I2C::Read (string): length=%d", length) |
Yann | 0:fa858f79d48d | 491 | if (length == 0) { |
Yann | 0:fa858f79d48d | 492 | DEBUG_ERROR("CFM24VXX_I2C::Read (string): empty") |
Yann | 0:fa858f79d48d | 493 | return true; |
Yann | 0:fa858f79d48d | 494 | } |
Yann | 0:fa858f79d48d | 495 | address += 4; // Skip the length value size |
Yann | 0:fa858f79d48d | 496 | length -= 4; // length is the size of (string length + string) |
Yann | 0:fa858f79d48d | 497 | } else { // The string length is provided by p_length2write parameter |
Yann | 0:fa858f79d48d | 498 | if (p_length2write == -1) { |
Yann | 0:fa858f79d48d | 499 | length = p_string.size(); |
Yann | 0:fa858f79d48d | 500 | } else { |
Yann | 0:fa858f79d48d | 501 | length = p_length2write; |
Yann | 0:fa858f79d48d | 502 | p_string.resize(p_length2write); |
Yann | 0:fa858f79d48d | 503 | } |
Yann | 0:fa858f79d48d | 504 | } |
Yann | 0:fa858f79d48d | 505 | DEBUG("CFM24VXX_I2C::Read (string): Address=0x%02x - Length=%d", address, length) |
Yann | 0:fa858f79d48d | 506 | |
Yann | 0:fa858f79d48d | 507 | // 2. Memory address |
Yann | 0:fa858f79d48d | 508 | char i2cBuffer[2]; |
Yann | 0:fa858f79d48d | 509 | i2cBuffer[0] = (unsigned char)(address >> 8); |
Yann | 0:fa858f79d48d | 510 | DEBUG("CFM24VXX_I2C::Read (string): pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 0:fa858f79d48d | 511 | i2cBuffer[1] = (unsigned char)((unsigned char)address & 0xff); |
Yann | 0:fa858f79d48d | 512 | DEBUG("CFM24VXX_I2C::Read (string): pI2CBuffer[1]: 0x%02x", i2cBuffer[1]) |
Yann | 0:fa858f79d48d | 513 | |
Yann | 0:fa858f79d48d | 514 | // 3. Send I2C start + memory address with repeat start |
Yann | 0:fa858f79d48d | 515 | if (_i2cInstance->write(_slaveAddress, i2cBuffer, 2, true) == 0) { |
Yann | 2:bf7d1264d3ff | 516 | //wait(0.02); |
Yann | 0:fa858f79d48d | 517 | DEBUG("CFM24VXX_I2C::Read (string): Write memory done") |
Yann | 0:fa858f79d48d | 518 | // 4. Read data + I2C stop |
Yann | 0:fa858f79d48d | 519 | char buffer[length]; |
Yann | 0:fa858f79d48d | 520 | int result = _i2cInstance->read(_slaveAddress, (char *)buffer, length); |
Yann | 0:fa858f79d48d | 521 | if (result == 0) { |
Yann | 0:fa858f79d48d | 522 | p_string.assign(buffer, length); |
Yann | 0:fa858f79d48d | 523 | |
Yann | 0:fa858f79d48d | 524 | return true; |
Yann | 0:fa858f79d48d | 525 | } |
Yann | 0:fa858f79d48d | 526 | } |
Yann | 0:fa858f79d48d | 527 | |
Yann | 0:fa858f79d48d | 528 | DEBUG_LEAVE("CFM24VXX_I2C::Read (string) (false)") |
Yann | 0:fa858f79d48d | 529 | return false; |
Yann | 0:fa858f79d48d | 530 | } |
Yann | 1:6a16bddd7222 | 531 | |
Yann | 2:bf7d1264d3ff | 532 | bool CFM24VXX_I2C::Read(const short p_address, char *p_string, const bool p_storeLength, const int p_length2write) { |
Yann | 2:bf7d1264d3ff | 533 | DEBUG_ENTER("CFM24VXX_I2C::Read (char *): Memory address:0x%02x, readLength:%01x, Length:%d", p_address, p_storeLength, p_length2write) |
Yann | 2:bf7d1264d3ff | 534 | |
Yann | 2:bf7d1264d3ff | 535 | // 1.Prepare buffer |
Yann | 2:bf7d1264d3ff | 536 | short address = p_address; |
Yann | 2:bf7d1264d3ff | 537 | int length = -1; |
Yann | 2:bf7d1264d3ff | 538 | if (p_storeLength) { // The string was stored with its length |
Yann | 2:bf7d1264d3ff | 539 | if (!Read(address, &length)) { // Read the length as integer in big endian mode |
Yann | 2:bf7d1264d3ff | 540 | DEBUG_ERROR("CFM24VXX_I2C::Read (char *): Failed to read length") |
Yann | 2:bf7d1264d3ff | 541 | return false; |
Yann | 2:bf7d1264d3ff | 542 | } |
Yann | 2:bf7d1264d3ff | 543 | //wait(0.02); |
Yann | 2:bf7d1264d3ff | 544 | DEBUG("CFM24VXX_I2C::Read (char *): length=%d", length) |
Yann | 2:bf7d1264d3ff | 545 | if (length == 0) { |
Yann | 2:bf7d1264d3ff | 546 | DEBUG_ERROR("CFM24VXX_I2C::Read (char *): empty") |
Yann | 2:bf7d1264d3ff | 547 | return true; |
Yann | 2:bf7d1264d3ff | 548 | } |
Yann | 2:bf7d1264d3ff | 549 | address += 4; // Skip the length value size |
Yann | 2:bf7d1264d3ff | 550 | length -= 4; // length is the size of (string length + string) |
Yann | 2:bf7d1264d3ff | 551 | } else { // The string length is provided by p_length2write parameter |
Yann | 2:bf7d1264d3ff | 552 | if (p_length2write == -1) { |
Yann | 2:bf7d1264d3ff | 553 | DEBUG_ERROR("CFM24VXX_I2C::Read (char *): undefined length") |
Yann | 2:bf7d1264d3ff | 554 | return false; |
Yann | 2:bf7d1264d3ff | 555 | } else { |
Yann | 2:bf7d1264d3ff | 556 | length = p_length2write; |
Yann | 2:bf7d1264d3ff | 557 | } |
Yann | 2:bf7d1264d3ff | 558 | } |
Yann | 2:bf7d1264d3ff | 559 | DEBUG("CFM24VXX_I2C::Read (char *): Address=0x%02x - Length=%d", address, length) |
Yann | 2:bf7d1264d3ff | 560 | |
Yann | 2:bf7d1264d3ff | 561 | // 2. Memory address |
Yann | 2:bf7d1264d3ff | 562 | char i2cBuffer[2]; |
Yann | 2:bf7d1264d3ff | 563 | i2cBuffer[0] = (unsigned char)(address >> 8); |
Yann | 2:bf7d1264d3ff | 564 | DEBUG("CFM24VXX_I2C::Read (char *): pI2CBuffer[0]: 0x%02x", i2cBuffer[0]) |
Yann | 2:bf7d1264d3ff | 565 | i2cBuffer[1] = (unsigned char)((unsigned char)address & 0xff); |
Yann | 2:bf7d1264d3ff | 566 | DEBUG("CFM24VXX_I2C::Read (char *): pI2CBuffer[1]: 0x%02x", i2cBuffer[1]) |
Yann | 2:bf7d1264d3ff | 567 | |
Yann | 2:bf7d1264d3ff | 568 | // 3. Send I2C start + memory address with repeat start |
Yann | 2:bf7d1264d3ff | 569 | if (_i2cInstance->write(_slaveAddress, i2cBuffer, 2, true) == 0) { |
Yann | 2:bf7d1264d3ff | 570 | //wait(0.02); |
Yann | 2:bf7d1264d3ff | 571 | DEBUG("CFM24VXX_I2C::Read (char *): Write memory done") |
Yann | 2:bf7d1264d3ff | 572 | // 4. Read data + I2C stop |
Yann | 2:bf7d1264d3ff | 573 | char buffer[length]; |
Yann | 2:bf7d1264d3ff | 574 | int result = _i2cInstance->read(_slaveAddress, buffer, length); |
Yann | 2:bf7d1264d3ff | 575 | memcpy((void *)p_string, (const void *)buffer, length); |
Yann | 2:bf7d1264d3ff | 576 | |
Yann | 2:bf7d1264d3ff | 577 | DEBUG_LEAVE("CFM24VXX_I2C::Read (char *): %x", (bool)(result == 0)) |
Yann | 2:bf7d1264d3ff | 578 | return (bool)(result == 0); |
Yann | 2:bf7d1264d3ff | 579 | } |
Yann | 2:bf7d1264d3ff | 580 | |
Yann | 2:bf7d1264d3ff | 581 | DEBUG_LEAVE("CFM24VXX_I2C::Read (char *) (false)") |
Yann | 2:bf7d1264d3ff | 582 | return false; |
Yann | 2:bf7d1264d3ff | 583 | } |
Yann | 2:bf7d1264d3ff | 584 | |
Yann | 1:6a16bddd7222 | 585 | unsigned char CFM24VXX_I2C::ChecksumSN(const unsigned char *pdatas, const unsigned int length) { |
Yann | 1:6a16bddd7222 | 586 | DEBUG_ENTER("CFM24VXX_I2C::ChecksumSN") |
Yann | 1:6a16bddd7222 | 587 | |
Yann | 1:6a16bddd7222 | 588 | unsigned char crctable[256] = { |
Yann | 1:6a16bddd7222 | 589 | 0x00, 0x07, 0x0E, 0x09, 0x1C, 0x1B, 0x12, 0x15, |
Yann | 1:6a16bddd7222 | 590 | 0x38, 0x3F, 0x36, 0x31, 0x24, 0x23, 0x2A, 0x2D, |
Yann | 1:6a16bddd7222 | 591 | 0x70, 0x77, 0x7E, 0x79, 0x6C, 0x6B, 0x62, 0x65, |
Yann | 1:6a16bddd7222 | 592 | 0x48, 0x4F, 0x46, 0x41, 0x54, 0x53, 0x5A, 0x5D, |
Yann | 1:6a16bddd7222 | 593 | 0xE0, 0xE7, 0xEE, 0xE9, 0xFC, 0xFB, 0xF2, 0xF5, |
Yann | 1:6a16bddd7222 | 594 | 0xD8, 0xDF, 0xD6, 0xD1, 0xC4, 0xC3, 0xCA, 0xCD, |
Yann | 1:6a16bddd7222 | 595 | 0x90, 0x97, 0x9E, 0x99, 0x8C, 0x8B, 0x82, 0x85, |
Yann | 1:6a16bddd7222 | 596 | 0xA8, 0xAF, 0xA6, 0xA1, 0xB4, 0xB3, 0xBA, 0xBD, |
Yann | 1:6a16bddd7222 | 597 | 0xC7, 0xC0, 0xC9, 0xCE, 0xDB, 0xDC, 0xD5, 0xD2, |
Yann | 1:6a16bddd7222 | 598 | 0xFF, 0xF8, 0xF1, 0xF6, 0xE3, 0xE4, 0xED, 0xEA, |
Yann | 1:6a16bddd7222 | 599 | 0xB7, 0xB0, 0xB9, 0xBE, 0xAB, 0xAC, 0xA5, 0xA2, |
Yann | 1:6a16bddd7222 | 600 | 0x8F, 0x88, 0x81, 0x86, 0x93, 0x94, 0x9D, 0x9A, |
Yann | 1:6a16bddd7222 | 601 | 0x27, 0x20, 0x29, 0x2E, 0x3B, 0x3C, 0x35, 0x32, |
Yann | 1:6a16bddd7222 | 602 | 0x1F, 0x18, 0x11, 0x16, 0x03, 0x04, 0x0D, 0x0A, |
Yann | 1:6a16bddd7222 | 603 | 0x57, 0x50, 0x59, 0x5E, 0x4B, 0x4C, 0x45, 0x42, |
Yann | 1:6a16bddd7222 | 604 | 0x6F, 0x68, 0x61, 0x66, 0x73, 0x74, 0x7D, 0x7A, |
Yann | 1:6a16bddd7222 | 605 | 0x89, 0x8E, 0x87, 0x80, 0x95, 0x92, 0x9B, 0x9C, |
Yann | 1:6a16bddd7222 | 606 | 0xB1, 0xB6, 0xBF, 0xB8, 0xAD, 0xAA, 0xA3, 0xA4, |
Yann | 1:6a16bddd7222 | 607 | 0xF9, 0xFE, 0xF7, 0xF0, 0xE5, 0xE2, 0xEB, 0xEC, |
Yann | 1:6a16bddd7222 | 608 | 0xC1, 0xC6, 0xCF, 0xC8, 0xDD, 0xDA, 0xD3, 0xD4, |
Yann | 1:6a16bddd7222 | 609 | 0x69, 0x6E, 0x67, 0x60, 0x75, 0x72, 0x7B, 0x7C, |
Yann | 1:6a16bddd7222 | 610 | 0x51, 0x56, 0x5F, 0x58, 0x4D, 0x4A, 0x43, 0x44, |
Yann | 1:6a16bddd7222 | 611 | 0x19, 0x1E, 0x17, 0x10, 0x05, 0x02, 0x0B, 0x0C, |
Yann | 1:6a16bddd7222 | 612 | 0x21, 0x26, 0x2F, 0x28, 0x3D, 0x3A, 0x33, 0x34, |
Yann | 1:6a16bddd7222 | 613 | 0x4E, 0x49, 0x40, 0x47, 0x52, 0x55, 0x5C, 0x5B, |
Yann | 1:6a16bddd7222 | 614 | 0x76, 0x71, 0x78, 0x7F, 0x6A, 0x6D, 0x64, 0x63, |
Yann | 1:6a16bddd7222 | 615 | 0x3E, 0x39, 0x30, 0x37, 0x22, 0x25, 0x2C, 0x2B, |
Yann | 1:6a16bddd7222 | 616 | 0x06, 0x01, 0x08, 0x0F, 0x1A, 0x1D, 0x14, 0x13, |
Yann | 1:6a16bddd7222 | 617 | 0xAE, 0xA9, 0xA0, 0xA7, 0xB2, 0xB5, 0xBC, 0xBB, |
Yann | 1:6a16bddd7222 | 618 | 0x96, 0x91, 0x98, 0x9F, 0x8A, 0x8D, 0x84, 0x83, |
Yann | 1:6a16bddd7222 | 619 | 0xDE, 0xD9, 0xD0, 0xD7, 0xC2, 0xC5, 0xCC, 0xCB, |
Yann | 1:6a16bddd7222 | 620 | 0xE6, 0xE1, 0xE8, 0xEF, 0xFA, 0xFD, 0xF4, 0xF3 |
Yann | 1:6a16bddd7222 | 621 | }; |
Yann | 1:6a16bddd7222 | 622 | unsigned char crc = 0x00; |
Yann | 1:6a16bddd7222 | 623 | unsigned int length_ = length; |
Yann | 1:6a16bddd7222 | 624 | unsigned char *pdata = (unsigned char *)pdatas; |
Yann | 1:6a16bddd7222 | 625 | while (length_-- != 0) { |
Yann | 1:6a16bddd7222 | 626 | crc = crctable[crc ^ *pdata++]; |
Yann | 1:6a16bddd7222 | 627 | DEBUG("CFM24VXX_I2C::ChecksumSN: current checksum= 0x%02x - pdata:%08x", crc, pdata) |
Yann | 1:6a16bddd7222 | 628 | } |
Yann | 1:6a16bddd7222 | 629 | |
Yann | 1:6a16bddd7222 | 630 | DEBUG_LEAVE("CFM24VXX_I2C::ChecksumSN: 0x%02x", crc) |
Yann | 1:6a16bddd7222 | 631 | return crc; |
Yann | 1:6a16bddd7222 | 632 | } |
Yann | 1:6a16bddd7222 | 633 | |
Yann | 0:fa858f79d48d | 634 | #if defined(__DEBUG) |
Yann | 0:fa858f79d48d | 635 | void CFM24VXX_I2C::DumpMemoryArea(const int p_address, const int p_count) { |
Yann | 0:fa858f79d48d | 636 | DEBUG_ENTER("CFM24VXX_I2C::DumpMemoryArea: %d - %d", p_address, p_count) |
Yann | 0:fa858f79d48d | 637 | |
Yann | 0:fa858f79d48d | 638 | DEBUG("CFM24VXX_I2C::DumpMemoryArea: Reading datas..."); |
Yann | 0:fa858f79d48d | 639 | std::vector<unsigned char> datas(p_count); |
Yann | 0:fa858f79d48d | 640 | if (!Read(p_address, datas, false)) { // Read bytes, including the lenght indication, buffer size is not set before the call |
Yann | 0:fa858f79d48d | 641 | std::cout << "CFM24VXX_I2C::DumpMemoryArea: read failed\r" << std::endl; |
Yann | 0:fa858f79d48d | 642 | } else { |
Yann | 0:fa858f79d48d | 643 | std::cout << "CFM24VXX_I2C::DumpMemoryArea: Read bytes:\r" << std::endl; |
Yann | 0:fa858f79d48d | 644 | HEXADUMP(&datas[0], p_count); |
Yann | 0:fa858f79d48d | 645 | std::cout << "\r" << std::endl; |
Yann | 0:fa858f79d48d | 646 | } |
Yann | 0:fa858f79d48d | 647 | } |
Yann | 0:fa858f79d48d | 648 | #endif // _DEBUG |
Yann | 0:fa858f79d48d | 649 | |
Yann | 0:fa858f79d48d | 650 | } // End of namespace _FM24VXX_I2C |