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Superseded by MaximInterface.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/DS2465/DS2465.cpp@74:23be10c32fa3, 2016-05-13 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Fri May 13 07:48:35 2016 -0500
- Revision:
- 74:23be10c32fa3
- Parent:
- 73:2cecc1372acc
- Child:
- 75:8b627804927c
Assimilated indentation and braces.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
IanBenzMaxim | 73:2cecc1372acc | 1 | #include "DS2465.h" |
IanBenzMaxim | 73:2cecc1372acc | 2 | #include "I2C.h" |
IanBenzMaxim | 73:2cecc1372acc | 3 | #include "wait_api.h" |
IanBenzMaxim | 21:00c94aeb533e | 4 | |
IanBenzMaxim | 21:00c94aeb533e | 5 | #define I2C_WRITE 0 |
IanBenzMaxim | 21:00c94aeb533e | 6 | #define I2C_READ 1 |
IanBenzMaxim | 21:00c94aeb533e | 7 | |
IanBenzMaxim | 21:00c94aeb533e | 8 | // DS2465 commands |
IanBenzMaxim | 21:00c94aeb533e | 9 | #define CMD_1WMR 0xF0 |
IanBenzMaxim | 21:00c94aeb533e | 10 | #define CMD_WCFG 0xD2 |
IanBenzMaxim | 21:00c94aeb533e | 11 | #define CMD_CHSL 0xC3 |
IanBenzMaxim | 21:00c94aeb533e | 12 | #define CMD_SRP 0xE1 |
IanBenzMaxim | 21:00c94aeb533e | 13 | |
IanBenzMaxim | 21:00c94aeb533e | 14 | #define CMD_1WRS 0xB4 |
IanBenzMaxim | 21:00c94aeb533e | 15 | #define CMD_1WWB 0xA5 |
IanBenzMaxim | 21:00c94aeb533e | 16 | #define CMD_1WRB 0x96 |
IanBenzMaxim | 21:00c94aeb533e | 17 | #define CMD_1WSB 0x87 |
IanBenzMaxim | 21:00c94aeb533e | 18 | #define CMD_1WT 0x78 |
IanBenzMaxim | 21:00c94aeb533e | 19 | #define CMD_1WTB 0x69 |
IanBenzMaxim | 21:00c94aeb533e | 20 | #define CMD_1WRF 0xE1 |
IanBenzMaxim | 21:00c94aeb533e | 21 | #define CMD_CPS 0x5A |
IanBenzMaxim | 21:00c94aeb533e | 22 | #define CMD_CSS 0x4B |
IanBenzMaxim | 21:00c94aeb533e | 23 | #define CMD_CSAM 0x3C |
IanBenzMaxim | 21:00c94aeb533e | 24 | #define CMD_CSWM 0x2D |
IanBenzMaxim | 21:00c94aeb533e | 25 | #define CMD_CNMS 0x1E |
IanBenzMaxim | 21:00c94aeb533e | 26 | #define CMD_SPR 0x0F |
IanBenzMaxim | 21:00c94aeb533e | 27 | |
IanBenzMaxim | 21:00c94aeb533e | 28 | // DS2465 status bits |
IanBenzMaxim | 21:00c94aeb533e | 29 | #define STATUS_1WB 0x01 |
IanBenzMaxim | 21:00c94aeb533e | 30 | #define STATUS_PPD 0x02 |
IanBenzMaxim | 21:00c94aeb533e | 31 | #define STATUS_SD 0x04 |
IanBenzMaxim | 21:00c94aeb533e | 32 | #define STATUS_LL 0x08 |
IanBenzMaxim | 21:00c94aeb533e | 33 | #define STATUS_RST 0x10 |
IanBenzMaxim | 21:00c94aeb533e | 34 | #define STATUS_SBR 0x20 |
IanBenzMaxim | 21:00c94aeb533e | 35 | #define STATUS_TSB 0x40 |
IanBenzMaxim | 21:00c94aeb533e | 36 | #define STATUS_DIR 0x80 |
IanBenzMaxim | 21:00c94aeb533e | 37 | |
IanBenzMaxim | 73:2cecc1372acc | 38 | using OneWire::Masters::OneWireMaster; |
IanBenzMaxim | 73:2cecc1372acc | 39 | using OneWire::Masters::DS2465; |
IanBenzMaxim | 73:2cecc1372acc | 40 | using OneWire::Authenticators::ISha256MacCoproc; |
IanBenzMaxim | 73:2cecc1372acc | 41 | |
IanBenzMaxim | 21:00c94aeb533e | 42 | static const int I2C_WRITE_OK = 0; |
IanBenzMaxim | 21:00c94aeb533e | 43 | |
IanBenzMaxim | 73:2cecc1372acc | 44 | uint8_t DS2465::Config::readByte() const |
IanBenzMaxim | 24:8942d8478d68 | 45 | { |
IanBenzMaxim | 74:23be10c32fa3 | 46 | uint8_t config = 0; |
IanBenzMaxim | 74:23be10c32fa3 | 47 | if (get1WS()) |
IanBenzMaxim | 74:23be10c32fa3 | 48 | { |
IanBenzMaxim | 74:23be10c32fa3 | 49 | config |= 0x08; |
IanBenzMaxim | 74:23be10c32fa3 | 50 | } |
IanBenzMaxim | 74:23be10c32fa3 | 51 | if (getSPU()) |
IanBenzMaxim | 74:23be10c32fa3 | 52 | { |
IanBenzMaxim | 74:23be10c32fa3 | 53 | config |= 0x04; |
IanBenzMaxim | 74:23be10c32fa3 | 54 | } |
IanBenzMaxim | 74:23be10c32fa3 | 55 | if (getPDN()) |
IanBenzMaxim | 74:23be10c32fa3 | 56 | { |
IanBenzMaxim | 74:23be10c32fa3 | 57 | config |= 0x02; |
IanBenzMaxim | 74:23be10c32fa3 | 58 | } |
IanBenzMaxim | 74:23be10c32fa3 | 59 | if (getAPU()) |
IanBenzMaxim | 74:23be10c32fa3 | 60 | { |
IanBenzMaxim | 74:23be10c32fa3 | 61 | config |= 0x01; |
IanBenzMaxim | 74:23be10c32fa3 | 62 | } |
IanBenzMaxim | 74:23be10c32fa3 | 63 | return config; |
IanBenzMaxim | 24:8942d8478d68 | 64 | } |
IanBenzMaxim | 24:8942d8478d68 | 65 | |
IanBenzMaxim | 73:2cecc1372acc | 66 | uint8_t DS2465::Config::writeByte() const |
IanBenzMaxim | 24:8942d8478d68 | 67 | { |
IanBenzMaxim | 74:23be10c32fa3 | 68 | uint8_t config = readByte(); |
IanBenzMaxim | 74:23be10c32fa3 | 69 | return ((~config << 4) | config); |
IanBenzMaxim | 24:8942d8478d68 | 70 | } |
IanBenzMaxim | 24:8942d8478d68 | 71 | |
IanBenzMaxim | 24:8942d8478d68 | 72 | void DS2465::Config::reset() |
IanBenzMaxim | 24:8942d8478d68 | 73 | { |
IanBenzMaxim | 74:23be10c32fa3 | 74 | set1WS(false); |
IanBenzMaxim | 74:23be10c32fa3 | 75 | setSPU(false); |
IanBenzMaxim | 74:23be10c32fa3 | 76 | setPDN(false); |
IanBenzMaxim | 74:23be10c32fa3 | 77 | setAPU(true); |
IanBenzMaxim | 24:8942d8478d68 | 78 | } |
IanBenzMaxim | 24:8942d8478d68 | 79 | |
IanBenzMaxim | 73:2cecc1372acc | 80 | DS2465::DS2465(mbed::I2C & I2C_interface, uint8_t I2C_address) |
IanBenzMaxim | 74:23be10c32fa3 | 81 | : m_I2C_interface(I2C_interface), m_I2C_address(I2C_address) |
IanBenzMaxim | 21:00c94aeb533e | 82 | { |
IanBenzMaxim | 74:23be10c32fa3 | 83 | |
IanBenzMaxim | 21:00c94aeb533e | 84 | } |
IanBenzMaxim | 21:00c94aeb533e | 85 | |
IanBenzMaxim | 21:00c94aeb533e | 86 | OneWireMaster::CmdResult DS2465::OWInitMaster() |
IanBenzMaxim | 21:00c94aeb533e | 87 | { |
IanBenzMaxim | 74:23be10c32fa3 | 88 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 89 | |
IanBenzMaxim | 74:23be10c32fa3 | 90 | // reset DS2465 |
IanBenzMaxim | 74:23be10c32fa3 | 91 | result = reset(); |
IanBenzMaxim | 74:23be10c32fa3 | 92 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 93 | { |
IanBenzMaxim | 74:23be10c32fa3 | 94 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 95 | } |
IanBenzMaxim | 74:23be10c32fa3 | 96 | |
IanBenzMaxim | 74:23be10c32fa3 | 97 | // write the default configuration setup |
IanBenzMaxim | 74:23be10c32fa3 | 98 | Config defaultConfig; |
IanBenzMaxim | 74:23be10c32fa3 | 99 | result = writeConfig(defaultConfig, true); |
IanBenzMaxim | 47:307dc45952db | 100 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 101 | } |
IanBenzMaxim | 21:00c94aeb533e | 102 | |
IanBenzMaxim | 33:a4c015046956 | 103 | OneWireMaster::CmdResult DS2465::computeNextMasterSecret(bool swap, unsigned int pageNum, PageRegion region) |
IanBenzMaxim | 21:00c94aeb533e | 104 | { |
IanBenzMaxim | 74:23be10c32fa3 | 105 | uint8_t command[2] = { CMD_CNMS, (uint8_t)(swap ? (0xC8 | (pageNum << 4) | region) : 0xBF) }; |
IanBenzMaxim | 74:23be10c32fa3 | 106 | return writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 107 | } |
IanBenzMaxim | 21:00c94aeb533e | 108 | |
IanBenzMaxim | 33:a4c015046956 | 109 | OneWireMaster::CmdResult DS2465::computeWriteMac(bool regwrite, bool swap, unsigned int pageNum, unsigned int segmentNum) const |
IanBenzMaxim | 21:00c94aeb533e | 110 | { |
IanBenzMaxim | 74:23be10c32fa3 | 111 | uint8_t command[2] = { CMD_CSWM, (uint8_t)((regwrite << 7) | (swap << 6) | (pageNum << 4) | segmentNum) }; |
IanBenzMaxim | 74:23be10c32fa3 | 112 | return cWriteMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 113 | } |
IanBenzMaxim | 21:00c94aeb533e | 114 | |
IanBenzMaxim | 33:a4c015046956 | 115 | OneWireMaster::CmdResult DS2465::computeAuthMac(bool swap, unsigned int pageNum, PageRegion region) const |
IanBenzMaxim | 21:00c94aeb533e | 116 | { |
IanBenzMaxim | 74:23be10c32fa3 | 117 | uint8_t command[2] = { CMD_CSAM, (uint8_t)(swap ? (0xC8 | (pageNum << 4) | region) : 0xBF) }; |
IanBenzMaxim | 74:23be10c32fa3 | 118 | return cWriteMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 119 | } |
IanBenzMaxim | 21:00c94aeb533e | 120 | |
IanBenzMaxim | 33:a4c015046956 | 121 | OneWireMaster::CmdResult DS2465::computeSlaveSecret(bool swap, unsigned int pageNum, PageRegion region) |
IanBenzMaxim | 21:00c94aeb533e | 122 | { |
IanBenzMaxim | 74:23be10c32fa3 | 123 | uint8_t command[2] = { CMD_CSS, (uint8_t)(swap ? (0xC8 | (pageNum << 4) | region) : 0xBF) }; |
IanBenzMaxim | 74:23be10c32fa3 | 124 | return writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 125 | } |
IanBenzMaxim | 21:00c94aeb533e | 126 | |
IanBenzMaxim | 73:2cecc1372acc | 127 | ISha256MacCoproc::CmdResult DS2465::setMasterSecret(const Secret & masterSecret) |
IanBenzMaxim | 21:00c94aeb533e | 128 | { |
IanBenzMaxim | 74:23be10c32fa3 | 129 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 130 | result = writeMemory(ADDR_SPAD, masterSecret, masterSecret.length); |
IanBenzMaxim | 74:23be10c32fa3 | 131 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 132 | { |
IanBenzMaxim | 74:23be10c32fa3 | 133 | result = copyScratchpadToSecret(); |
IanBenzMaxim | 74:23be10c32fa3 | 134 | } |
IanBenzMaxim | 74:23be10c32fa3 | 135 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 136 | { |
IanBenzMaxim | 74:23be10c32fa3 | 137 | wait_ms(eepromPageWriteDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 138 | } |
IanBenzMaxim | 74:23be10c32fa3 | 139 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 140 | } |
IanBenzMaxim | 21:00c94aeb533e | 141 | |
IanBenzMaxim | 73:2cecc1372acc | 142 | ISha256MacCoproc::CmdResult DS2465::computeWriteMac(const WriteMacData & writeMacData, Mac & mac) const |
IanBenzMaxim | 21:00c94aeb533e | 143 | { |
IanBenzMaxim | 74:23be10c32fa3 | 144 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 145 | // Write input data to scratchpad |
IanBenzMaxim | 74:23be10c32fa3 | 146 | result = writeScratchpad(writeMacData, writeMacData.length); |
IanBenzMaxim | 74:23be10c32fa3 | 147 | // Compute MAC |
IanBenzMaxim | 74:23be10c32fa3 | 148 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 149 | { |
IanBenzMaxim | 74:23be10c32fa3 | 150 | result = computeWriteMac(false); |
IanBenzMaxim | 74:23be10c32fa3 | 151 | } |
IanBenzMaxim | 74:23be10c32fa3 | 152 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 153 | { |
IanBenzMaxim | 74:23be10c32fa3 | 154 | wait_ms(shaComputationDelayMs); |
IanBenzMaxim | 74:23be10c32fa3 | 155 | // Read MAC from register |
IanBenzMaxim | 74:23be10c32fa3 | 156 | result = readMemory(ADDR_MAC_READ, mac, mac.length, true); |
IanBenzMaxim | 74:23be10c32fa3 | 157 | } |
IanBenzMaxim | 74:23be10c32fa3 | 158 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 159 | } |
IanBenzMaxim | 21:00c94aeb533e | 160 | |
IanBenzMaxim | 73:2cecc1372acc | 161 | ISha256MacCoproc::CmdResult DS2465::computeAuthMac(const DevicePage & devicePage, const DeviceScratchpad & challenge, const AuthMacData & authMacData, Mac & mac) const |
IanBenzMaxim | 21:00c94aeb533e | 162 | { |
IanBenzMaxim | 74:23be10c32fa3 | 163 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 164 | int addr = ADDR_SPAD; |
IanBenzMaxim | 74:23be10c32fa3 | 165 | // Write input data to scratchpad |
IanBenzMaxim | 74:23be10c32fa3 | 166 | result = cWriteMemory(addr, devicePage, devicePage.length); |
IanBenzMaxim | 74:23be10c32fa3 | 167 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 168 | { |
IanBenzMaxim | 74:23be10c32fa3 | 169 | addr += devicePage.length; |
IanBenzMaxim | 74:23be10c32fa3 | 170 | result = cWriteMemory(addr, challenge, challenge.length); |
IanBenzMaxim | 74:23be10c32fa3 | 171 | } |
IanBenzMaxim | 74:23be10c32fa3 | 172 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 173 | { |
IanBenzMaxim | 74:23be10c32fa3 | 174 | addr += challenge.length; |
IanBenzMaxim | 74:23be10c32fa3 | 175 | result = cWriteMemory(addr, authMacData, authMacData.length); |
IanBenzMaxim | 74:23be10c32fa3 | 176 | } |
IanBenzMaxim | 74:23be10c32fa3 | 177 | // Compute MAC |
IanBenzMaxim | 74:23be10c32fa3 | 178 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 179 | { |
IanBenzMaxim | 74:23be10c32fa3 | 180 | result = computeAuthMac(); |
IanBenzMaxim | 74:23be10c32fa3 | 181 | } |
IanBenzMaxim | 74:23be10c32fa3 | 182 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 183 | { |
IanBenzMaxim | 74:23be10c32fa3 | 184 | wait_ms(shaComputationDelayMs * 2); |
IanBenzMaxim | 74:23be10c32fa3 | 185 | // Read MAC from register |
IanBenzMaxim | 74:23be10c32fa3 | 186 | result = readMemory(ADDR_MAC_READ, mac, mac.length, true); |
IanBenzMaxim | 74:23be10c32fa3 | 187 | } |
IanBenzMaxim | 74:23be10c32fa3 | 188 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 189 | } |
IanBenzMaxim | 21:00c94aeb533e | 190 | |
IanBenzMaxim | 73:2cecc1372acc | 191 | ISha256MacCoproc::CmdResult DS2465::computeSlaveSecret(const DevicePage & devicePage, const DeviceScratchpad & deviceScratchpad, const SlaveSecretData & slaveSecretData) |
IanBenzMaxim | 21:00c94aeb533e | 192 | { |
IanBenzMaxim | 74:23be10c32fa3 | 193 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 194 | int addr = ADDR_SPAD; |
IanBenzMaxim | 74:23be10c32fa3 | 195 | // Write input data to scratchpad |
IanBenzMaxim | 74:23be10c32fa3 | 196 | result = writeMemory(addr, devicePage, devicePage.length); |
IanBenzMaxim | 74:23be10c32fa3 | 197 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 198 | { |
IanBenzMaxim | 74:23be10c32fa3 | 199 | addr += devicePage.length; |
IanBenzMaxim | 74:23be10c32fa3 | 200 | result = writeMemory(addr, deviceScratchpad, deviceScratchpad.length); |
IanBenzMaxim | 74:23be10c32fa3 | 201 | } |
IanBenzMaxim | 74:23be10c32fa3 | 202 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 203 | { |
IanBenzMaxim | 74:23be10c32fa3 | 204 | addr += deviceScratchpad.length; |
IanBenzMaxim | 74:23be10c32fa3 | 205 | result = writeMemory(addr, slaveSecretData, slaveSecretData.length); |
IanBenzMaxim | 74:23be10c32fa3 | 206 | } |
IanBenzMaxim | 74:23be10c32fa3 | 207 | // Compute secret |
IanBenzMaxim | 74:23be10c32fa3 | 208 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 209 | { |
IanBenzMaxim | 74:23be10c32fa3 | 210 | result = computeSlaveSecret(); |
IanBenzMaxim | 74:23be10c32fa3 | 211 | } |
IanBenzMaxim | 74:23be10c32fa3 | 212 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 213 | { |
IanBenzMaxim | 74:23be10c32fa3 | 214 | wait_ms(shaComputationDelayMs * 2); |
IanBenzMaxim | 74:23be10c32fa3 | 215 | } |
IanBenzMaxim | 74:23be10c32fa3 | 216 | return (result == OneWireMaster::Success ? ISha256MacCoproc::Success : ISha256MacCoproc::OperationFailure); |
IanBenzMaxim | 21:00c94aeb533e | 217 | } |
IanBenzMaxim | 21:00c94aeb533e | 218 | |
IanBenzMaxim | 74:23be10c32fa3 | 219 | OneWireMaster::CmdResult DS2465::copyScratchpad(bool destSecret, unsigned int pageNum, bool notFull, unsigned int segmentNum) |
IanBenzMaxim | 21:00c94aeb533e | 220 | { |
IanBenzMaxim | 74:23be10c32fa3 | 221 | uint8_t command[2] = { CMD_CPS, (uint8_t)(destSecret ? 0 : (0x80 | (pageNum << 4) | (notFull << 3) | segmentNum)) }; |
IanBenzMaxim | 74:23be10c32fa3 | 222 | return writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 223 | } |
IanBenzMaxim | 21:00c94aeb533e | 224 | |
IanBenzMaxim | 34:11fffbe98ef9 | 225 | OneWireMaster::CmdResult DS2465::configureLevel(OWLevel level) |
IanBenzMaxim | 26:a361e3f42ba5 | 226 | { |
IanBenzMaxim | 74:23be10c32fa3 | 227 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 228 | if (m_curConfig.getSPU() != (level == LEVEL_STRONG)) |
IanBenzMaxim | 74:23be10c32fa3 | 229 | { |
IanBenzMaxim | 74:23be10c32fa3 | 230 | Config newConfig = m_curConfig; |
IanBenzMaxim | 74:23be10c32fa3 | 231 | newConfig.setSPU(level == LEVEL_STRONG); |
IanBenzMaxim | 74:23be10c32fa3 | 232 | result = writeConfig(newConfig, true); |
IanBenzMaxim | 74:23be10c32fa3 | 233 | } |
IanBenzMaxim | 74:23be10c32fa3 | 234 | else |
IanBenzMaxim | 74:23be10c32fa3 | 235 | { |
IanBenzMaxim | 74:23be10c32fa3 | 236 | result = OneWireMaster::Success; |
IanBenzMaxim | 74:23be10c32fa3 | 237 | } |
IanBenzMaxim | 74:23be10c32fa3 | 238 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 239 | } |
IanBenzMaxim | 21:00c94aeb533e | 240 | |
IanBenzMaxim | 32:bce180b544ed | 241 | OneWireMaster::CmdResult DS2465::OWSetLevel(OWLevel new_level) |
IanBenzMaxim | 21:00c94aeb533e | 242 | { |
IanBenzMaxim | 74:23be10c32fa3 | 243 | if (new_level == LEVEL_STRONG) |
IanBenzMaxim | 74:23be10c32fa3 | 244 | { |
IanBenzMaxim | 74:23be10c32fa3 | 245 | return OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 246 | } |
IanBenzMaxim | 74:23be10c32fa3 | 247 | |
IanBenzMaxim | 74:23be10c32fa3 | 248 | return configureLevel(new_level); |
IanBenzMaxim | 21:00c94aeb533e | 249 | } |
IanBenzMaxim | 21:00c94aeb533e | 250 | |
IanBenzMaxim | 32:bce180b544ed | 251 | OneWireMaster::CmdResult DS2465::OWSetSpeed(OWSpeed new_speed) |
IanBenzMaxim | 21:00c94aeb533e | 252 | { |
IanBenzMaxim | 74:23be10c32fa3 | 253 | // Requested speed is already set |
IanBenzMaxim | 74:23be10c32fa3 | 254 | if (m_curConfig.get1WS() == (new_speed == SPEED_OVERDRIVE)) |
IanBenzMaxim | 74:23be10c32fa3 | 255 | { |
IanBenzMaxim | 74:23be10c32fa3 | 256 | return OneWireMaster::Success; |
IanBenzMaxim | 74:23be10c32fa3 | 257 | } |
IanBenzMaxim | 21:00c94aeb533e | 258 | |
IanBenzMaxim | 74:23be10c32fa3 | 259 | // set the speed |
IanBenzMaxim | 74:23be10c32fa3 | 260 | Config newConfig = m_curConfig; |
IanBenzMaxim | 74:23be10c32fa3 | 261 | newConfig.set1WS(new_speed == SPEED_OVERDRIVE); |
IanBenzMaxim | 74:23be10c32fa3 | 262 | |
IanBenzMaxim | 74:23be10c32fa3 | 263 | // write the new config |
IanBenzMaxim | 74:23be10c32fa3 | 264 | return writeConfig(newConfig, true); |
IanBenzMaxim | 21:00c94aeb533e | 265 | } |
IanBenzMaxim | 21:00c94aeb533e | 266 | |
IanBenzMaxim | 74:23be10c32fa3 | 267 | OneWireMaster::CmdResult DS2465::OWTriplet(SearchDirection & search_direction, uint8_t & sbr, uint8_t & tsb) |
IanBenzMaxim | 21:00c94aeb533e | 268 | { |
IanBenzMaxim | 74:23be10c32fa3 | 269 | // 1-Wire Triplet (Case B) |
IanBenzMaxim | 74:23be10c32fa3 | 270 | // S AD,0 [A] 1WT [A] SS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 271 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 272 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 273 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 274 | // SS indicates byte containing search direction bit value in msbit |
IanBenzMaxim | 74:23be10c32fa3 | 275 | |
IanBenzMaxim | 74:23be10c32fa3 | 276 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 277 | uint8_t command[2] = { CMD_1WT, (uint8_t)((search_direction == DIRECTION_WRITE_ONE) ? 0x80 : 0x00) }; |
IanBenzMaxim | 74:23be10c32fa3 | 278 | result = writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 32:bce180b544ed | 279 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 32:bce180b544ed | 280 | { |
IanBenzMaxim | 74:23be10c32fa3 | 281 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 282 | result = pollBusy(&status); |
IanBenzMaxim | 74:23be10c32fa3 | 283 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 284 | { |
IanBenzMaxim | 74:23be10c32fa3 | 285 | // check bit results in status byte |
IanBenzMaxim | 74:23be10c32fa3 | 286 | sbr = ((status & STATUS_SBR) == STATUS_SBR); |
IanBenzMaxim | 74:23be10c32fa3 | 287 | tsb = ((status & STATUS_TSB) == STATUS_TSB); |
IanBenzMaxim | 74:23be10c32fa3 | 288 | search_direction = ((status & STATUS_DIR) == STATUS_DIR) ? DIRECTION_WRITE_ONE : DIRECTION_WRITE_ZERO; |
IanBenzMaxim | 74:23be10c32fa3 | 289 | } |
IanBenzMaxim | 32:bce180b544ed | 290 | } |
IanBenzMaxim | 74:23be10c32fa3 | 291 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 292 | } |
IanBenzMaxim | 21:00c94aeb533e | 293 | |
IanBenzMaxim | 74:23be10c32fa3 | 294 | OneWireMaster::CmdResult DS2465::OWReadBlock(uint8_t *rx_buf, uint8_t rx_len) |
IanBenzMaxim | 21:00c94aeb533e | 295 | { |
IanBenzMaxim | 74:23be10c32fa3 | 296 | // 1-Wire Receive Block (Case A) |
IanBenzMaxim | 74:23be10c32fa3 | 297 | // S AD,0 [A] ADDR_CMD_REG [A] 1WRF [A] PR [A] P |
IanBenzMaxim | 74:23be10c32fa3 | 298 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 299 | // PR indicates byte containing parameter |
IanBenzMaxim | 74:23be10c32fa3 | 300 | |
IanBenzMaxim | 74:23be10c32fa3 | 301 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 302 | uint8_t command[2] = { CMD_1WRF, rx_len }; |
IanBenzMaxim | 21:00c94aeb533e | 303 | |
IanBenzMaxim | 74:23be10c32fa3 | 304 | result = writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 305 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 306 | { |
IanBenzMaxim | 74:23be10c32fa3 | 307 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 308 | } |
IanBenzMaxim | 74:23be10c32fa3 | 309 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 310 | { |
IanBenzMaxim | 74:23be10c32fa3 | 311 | result = readMemory(ADDR_SPAD, rx_buf, rx_len, false); |
IanBenzMaxim | 74:23be10c32fa3 | 312 | } |
IanBenzMaxim | 21:00c94aeb533e | 313 | |
IanBenzMaxim | 74:23be10c32fa3 | 314 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 315 | } |
IanBenzMaxim | 21:00c94aeb533e | 316 | |
IanBenzMaxim | 73:2cecc1372acc | 317 | OneWireMaster::CmdResult DS2465::OWWriteBlock(const uint8_t *tran_buf, uint8_t tran_len) |
IanBenzMaxim | 21:00c94aeb533e | 318 | { |
IanBenzMaxim | 74:23be10c32fa3 | 319 | return OWWriteBlock(false, tran_buf, tran_len); |
IanBenzMaxim | 21:00c94aeb533e | 320 | } |
IanBenzMaxim | 21:00c94aeb533e | 321 | |
IanBenzMaxim | 47:307dc45952db | 322 | OneWireMaster::CmdResult DS2465::OWWriteBlockMac() |
IanBenzMaxim | 47:307dc45952db | 323 | { |
IanBenzMaxim | 74:23be10c32fa3 | 324 | return OWWriteBlock(true, NULL, 0); |
IanBenzMaxim | 47:307dc45952db | 325 | } |
IanBenzMaxim | 47:307dc45952db | 326 | |
IanBenzMaxim | 73:2cecc1372acc | 327 | OneWireMaster::CmdResult DS2465::OWWriteBlock(bool tx_mac, const uint8_t *tran_buf, uint8_t tran_len) |
IanBenzMaxim | 21:00c94aeb533e | 328 | { |
IanBenzMaxim | 74:23be10c32fa3 | 329 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 330 | uint8_t command[2] = { CMD_1WTB, (uint8_t)(tx_mac ? 0xFF : tran_len) }; |
IanBenzMaxim | 21:00c94aeb533e | 331 | |
IanBenzMaxim | 74:23be10c32fa3 | 332 | if (!tx_mac) |
IanBenzMaxim | 74:23be10c32fa3 | 333 | { |
IanBenzMaxim | 74:23be10c32fa3 | 334 | // prefill scratchpad with required data |
IanBenzMaxim | 74:23be10c32fa3 | 335 | result = writeMemory(ADDR_SPAD, tran_buf, tran_len); |
IanBenzMaxim | 74:23be10c32fa3 | 336 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 337 | { |
IanBenzMaxim | 74:23be10c32fa3 | 338 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 339 | } |
IanBenzMaxim | 74:23be10c32fa3 | 340 | } |
IanBenzMaxim | 21:00c94aeb533e | 341 | |
IanBenzMaxim | 74:23be10c32fa3 | 342 | // 1-Wire Transmit Block (Case A) |
IanBenzMaxim | 74:23be10c32fa3 | 343 | // S AD,0 [A] ADDR_CMD_REG [A] 1WTB [A] PR [A] P |
IanBenzMaxim | 74:23be10c32fa3 | 344 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 345 | // PR indicates byte containing parameter |
IanBenzMaxim | 74:23be10c32fa3 | 346 | |
IanBenzMaxim | 74:23be10c32fa3 | 347 | result = writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 21:00c94aeb533e | 348 | |
IanBenzMaxim | 74:23be10c32fa3 | 349 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 350 | { |
IanBenzMaxim | 74:23be10c32fa3 | 351 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 352 | } |
IanBenzMaxim | 74:23be10c32fa3 | 353 | |
IanBenzMaxim | 74:23be10c32fa3 | 354 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 355 | } |
IanBenzMaxim | 21:00c94aeb533e | 356 | |
IanBenzMaxim | 74:23be10c32fa3 | 357 | OneWireMaster::CmdResult DS2465::OWReadByteSetLevel(uint8_t & recvbyte, OWLevel after_level) |
IanBenzMaxim | 21:00c94aeb533e | 358 | { |
IanBenzMaxim | 74:23be10c32fa3 | 359 | // 1-Wire Read Bytes (Case C) |
IanBenzMaxim | 74:23be10c32fa3 | 360 | // S AD,0 [A] ADDR_CMD_REG [A] 1WRB [A] Sr AD,1 [A] [Status] A [Status] A |
IanBenzMaxim | 74:23be10c32fa3 | 361 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 362 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 363 | // Sr AD,0 [A] SRP [A] E1 [A] Sr AD,1 [A] DD A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 364 | // |
IanBenzMaxim | 74:23be10c32fa3 | 365 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 366 | // DD data read |
IanBenzMaxim | 74:23be10c32fa3 | 367 | |
IanBenzMaxim | 74:23be10c32fa3 | 368 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 369 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 370 | |
IanBenzMaxim | 74:23be10c32fa3 | 371 | result = configureLevel(after_level); |
IanBenzMaxim | 74:23be10c32fa3 | 372 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 373 | { |
IanBenzMaxim | 74:23be10c32fa3 | 374 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 375 | } |
IanBenzMaxim | 74:23be10c32fa3 | 376 | |
IanBenzMaxim | 74:23be10c32fa3 | 377 | buf = CMD_1WRB; |
IanBenzMaxim | 74:23be10c32fa3 | 378 | result = writeMemory(ADDR_CMD_REG, &buf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 379 | |
IanBenzMaxim | 74:23be10c32fa3 | 380 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 381 | { |
IanBenzMaxim | 74:23be10c32fa3 | 382 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 383 | } |
IanBenzMaxim | 74:23be10c32fa3 | 384 | |
IanBenzMaxim | 74:23be10c32fa3 | 385 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 386 | { |
IanBenzMaxim | 74:23be10c32fa3 | 387 | result = readMemory(ADDR_DATA_REG, &buf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 388 | } |
IanBenzMaxim | 74:23be10c32fa3 | 389 | |
IanBenzMaxim | 74:23be10c32fa3 | 390 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 391 | { |
IanBenzMaxim | 74:23be10c32fa3 | 392 | recvbyte = buf; |
IanBenzMaxim | 74:23be10c32fa3 | 393 | } |
IanBenzMaxim | 74:23be10c32fa3 | 394 | |
IanBenzMaxim | 26:a361e3f42ba5 | 395 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 396 | } |
IanBenzMaxim | 21:00c94aeb533e | 397 | |
IanBenzMaxim | 74:23be10c32fa3 | 398 | OneWireMaster::CmdResult DS2465::OWWriteByteSetLevel(uint8_t sendbyte, OWLevel after_level) |
IanBenzMaxim | 74:23be10c32fa3 | 399 | { |
IanBenzMaxim | 74:23be10c32fa3 | 400 | // 1-Wire Write Byte (Case B) |
IanBenzMaxim | 74:23be10c32fa3 | 401 | // S AD,0 [A] ADDR_CMD_REG [A] 1WWB [A] DD [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 402 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 403 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 404 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 405 | // DD data to write |
IanBenzMaxim | 74:23be10c32fa3 | 406 | |
IanBenzMaxim | 74:23be10c32fa3 | 407 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 408 | |
IanBenzMaxim | 74:23be10c32fa3 | 409 | result = configureLevel(after_level); |
IanBenzMaxim | 74:23be10c32fa3 | 410 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 411 | { |
IanBenzMaxim | 74:23be10c32fa3 | 412 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 413 | } |
IanBenzMaxim | 74:23be10c32fa3 | 414 | |
IanBenzMaxim | 74:23be10c32fa3 | 415 | uint8_t command[2] = { CMD_1WWB, sendbyte }; |
IanBenzMaxim | 74:23be10c32fa3 | 416 | |
IanBenzMaxim | 74:23be10c32fa3 | 417 | result = writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 418 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 419 | { |
IanBenzMaxim | 74:23be10c32fa3 | 420 | result = pollBusy(); |
IanBenzMaxim | 74:23be10c32fa3 | 421 | } |
IanBenzMaxim | 74:23be10c32fa3 | 422 | |
IanBenzMaxim | 26:a361e3f42ba5 | 423 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 424 | } |
IanBenzMaxim | 21:00c94aeb533e | 425 | |
IanBenzMaxim | 74:23be10c32fa3 | 426 | OneWireMaster::CmdResult DS2465::OWTouchBitSetLevel(uint8_t & sendrecvbit, OWLevel after_level) |
IanBenzMaxim | 21:00c94aeb533e | 427 | { |
IanBenzMaxim | 74:23be10c32fa3 | 428 | // 1-Wire bit (Case B) |
IanBenzMaxim | 74:23be10c32fa3 | 429 | // S AD,0 [A] ADDR_CMD_REG [A] 1WSB [A] BB [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 430 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 431 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 432 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 433 | // BB indicates byte containing bit value in msbit |
IanBenzMaxim | 74:23be10c32fa3 | 434 | |
IanBenzMaxim | 74:23be10c32fa3 | 435 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 436 | |
IanBenzMaxim | 74:23be10c32fa3 | 437 | result = configureLevel(after_level); |
IanBenzMaxim | 74:23be10c32fa3 | 438 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 439 | { |
IanBenzMaxim | 74:23be10c32fa3 | 440 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 441 | } |
IanBenzMaxim | 21:00c94aeb533e | 442 | |
IanBenzMaxim | 74:23be10c32fa3 | 443 | uint8_t command[2] = { CMD_1WSB, (uint8_t)(sendrecvbit ? 0x80 : 0x00) }; |
IanBenzMaxim | 74:23be10c32fa3 | 444 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 445 | |
IanBenzMaxim | 74:23be10c32fa3 | 446 | result = writeMemory(ADDR_CMD_REG, command, 2); |
IanBenzMaxim | 74:23be10c32fa3 | 447 | |
IanBenzMaxim | 74:23be10c32fa3 | 448 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 449 | { |
IanBenzMaxim | 74:23be10c32fa3 | 450 | result = pollBusy(&status); |
IanBenzMaxim | 74:23be10c32fa3 | 451 | } |
IanBenzMaxim | 74:23be10c32fa3 | 452 | |
IanBenzMaxim | 74:23be10c32fa3 | 453 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 454 | { |
IanBenzMaxim | 74:23be10c32fa3 | 455 | sendrecvbit = (status & STATUS_SBR); |
IanBenzMaxim | 74:23be10c32fa3 | 456 | } |
IanBenzMaxim | 74:23be10c32fa3 | 457 | |
IanBenzMaxim | 26:a361e3f42ba5 | 458 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 459 | } |
IanBenzMaxim | 21:00c94aeb533e | 460 | |
IanBenzMaxim | 73:2cecc1372acc | 461 | OneWireMaster::CmdResult DS2465::cWriteMemory(uint8_t addr, const uint8_t * buf, size_t bufLen) const |
IanBenzMaxim | 21:00c94aeb533e | 462 | { |
IanBenzMaxim | 74:23be10c32fa3 | 463 | int i; |
IanBenzMaxim | 21:00c94aeb533e | 464 | |
IanBenzMaxim | 74:23be10c32fa3 | 465 | // Write SRAM (Case A) |
IanBenzMaxim | 74:23be10c32fa3 | 466 | // S AD,0 [A] VSA [A] DD [A] P |
IanBenzMaxim | 74:23be10c32fa3 | 467 | // \-----/ |
IanBenzMaxim | 74:23be10c32fa3 | 468 | // Repeat for each data byte |
IanBenzMaxim | 74:23be10c32fa3 | 469 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 470 | // VSA valid SRAM memory address |
IanBenzMaxim | 74:23be10c32fa3 | 471 | // DD memory data to write |
IanBenzMaxim | 74:23be10c32fa3 | 472 | |
IanBenzMaxim | 74:23be10c32fa3 | 473 | m_I2C_interface.start(); |
IanBenzMaxim | 74:23be10c32fa3 | 474 | if (m_I2C_interface.write((m_I2C_address | I2C_WRITE)) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 475 | { |
IanBenzMaxim | 21:00c94aeb533e | 476 | m_I2C_interface.stop(); |
IanBenzMaxim | 21:00c94aeb533e | 477 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 478 | } |
IanBenzMaxim | 74:23be10c32fa3 | 479 | if (m_I2C_interface.write(addr) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 480 | { |
IanBenzMaxim | 74:23be10c32fa3 | 481 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 482 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 483 | } |
IanBenzMaxim | 74:23be10c32fa3 | 484 | // loop to write each byte |
IanBenzMaxim | 74:23be10c32fa3 | 485 | for (i = 0; i < bufLen; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 486 | { |
IanBenzMaxim | 74:23be10c32fa3 | 487 | if (m_I2C_interface.write(buf[i]) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 488 | { |
IanBenzMaxim | 74:23be10c32fa3 | 489 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 490 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 491 | } |
IanBenzMaxim | 74:23be10c32fa3 | 492 | } |
IanBenzMaxim | 74:23be10c32fa3 | 493 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 494 | |
IanBenzMaxim | 74:23be10c32fa3 | 495 | return OneWireMaster::Success; |
IanBenzMaxim | 21:00c94aeb533e | 496 | } |
IanBenzMaxim | 21:00c94aeb533e | 497 | |
IanBenzMaxim | 73:2cecc1372acc | 498 | OneWireMaster::CmdResult DS2465::readMemory(uint8_t addr, uint8_t * buf, size_t bufLen, bool skipSetPointer) const |
IanBenzMaxim | 21:00c94aeb533e | 499 | { |
IanBenzMaxim | 74:23be10c32fa3 | 500 | int i; |
IanBenzMaxim | 74:23be10c32fa3 | 501 | |
IanBenzMaxim | 74:23be10c32fa3 | 502 | // Read (Case A) |
IanBenzMaxim | 74:23be10c32fa3 | 503 | // S AD,0 [A] MA [A] Sr AD,1 [A] [DD] A [DD] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 504 | // \-----/ |
IanBenzMaxim | 74:23be10c32fa3 | 505 | // Repeat for each data byte, NAK last byte |
IanBenzMaxim | 74:23be10c32fa3 | 506 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 507 | // MA memory address |
IanBenzMaxim | 74:23be10c32fa3 | 508 | // DD memory data read |
IanBenzMaxim | 21:00c94aeb533e | 509 | |
IanBenzMaxim | 74:23be10c32fa3 | 510 | m_I2C_interface.start(); |
IanBenzMaxim | 74:23be10c32fa3 | 511 | if (!skipSetPointer) |
IanBenzMaxim | 74:23be10c32fa3 | 512 | { |
IanBenzMaxim | 74:23be10c32fa3 | 513 | if (m_I2C_interface.write((m_I2C_address | I2C_WRITE)) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 514 | { |
IanBenzMaxim | 74:23be10c32fa3 | 515 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 516 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 517 | } |
IanBenzMaxim | 74:23be10c32fa3 | 518 | if (m_I2C_interface.write(addr) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 519 | { |
IanBenzMaxim | 74:23be10c32fa3 | 520 | m_I2C_interface.stop(); |
IanBenzMaxim | 74:23be10c32fa3 | 521 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 522 | } |
IanBenzMaxim | 74:23be10c32fa3 | 523 | m_I2C_interface.start(); |
IanBenzMaxim | 74:23be10c32fa3 | 524 | } |
IanBenzMaxim | 21:00c94aeb533e | 525 | |
IanBenzMaxim | 74:23be10c32fa3 | 526 | if (m_I2C_interface.write((m_I2C_address | I2C_READ)) != I2C_WRITE_OK) |
IanBenzMaxim | 74:23be10c32fa3 | 527 | { |
IanBenzMaxim | 47:307dc45952db | 528 | m_I2C_interface.stop(); |
IanBenzMaxim | 47:307dc45952db | 529 | return OneWireMaster::CommunicationWriteError; |
IanBenzMaxim | 74:23be10c32fa3 | 530 | } |
IanBenzMaxim | 74:23be10c32fa3 | 531 | // loop to read each byte, NAK last byte |
IanBenzMaxim | 74:23be10c32fa3 | 532 | for (i = 0; i < bufLen; i++) |
IanBenzMaxim | 74:23be10c32fa3 | 533 | { |
IanBenzMaxim | 74:23be10c32fa3 | 534 | buf[i] = m_I2C_interface.read((i == (bufLen - 1)) ? mbed::I2C::NoACK : mbed::I2C::ACK); |
IanBenzMaxim | 74:23be10c32fa3 | 535 | } |
IanBenzMaxim | 74:23be10c32fa3 | 536 | m_I2C_interface.stop(); |
IanBenzMaxim | 21:00c94aeb533e | 537 | |
IanBenzMaxim | 74:23be10c32fa3 | 538 | return OneWireMaster::Success; |
IanBenzMaxim | 21:00c94aeb533e | 539 | } |
IanBenzMaxim | 21:00c94aeb533e | 540 | |
IanBenzMaxim | 34:11fffbe98ef9 | 541 | OneWireMaster::CmdResult DS2465::writeConfig(const Config & config, bool verify) |
IanBenzMaxim | 21:00c94aeb533e | 542 | { |
IanBenzMaxim | 74:23be10c32fa3 | 543 | uint8_t configBuf; |
IanBenzMaxim | 74:23be10c32fa3 | 544 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 545 | |
IanBenzMaxim | 74:23be10c32fa3 | 546 | configBuf = config.writeByte(); |
IanBenzMaxim | 74:23be10c32fa3 | 547 | result = writeMemory(ADDR_WCFG_REG, &configBuf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 548 | if (verify) |
IanBenzMaxim | 74:23be10c32fa3 | 549 | { |
IanBenzMaxim | 74:23be10c32fa3 | 550 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 551 | { |
IanBenzMaxim | 74:23be10c32fa3 | 552 | result = readMemory(ADDR_WCFG_REG, &configBuf, 1); |
IanBenzMaxim | 74:23be10c32fa3 | 553 | } |
IanBenzMaxim | 74:23be10c32fa3 | 554 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 555 | { |
IanBenzMaxim | 74:23be10c32fa3 | 556 | if (configBuf != config.readByte()) |
IanBenzMaxim | 74:23be10c32fa3 | 557 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 558 | } |
IanBenzMaxim | 74:23be10c32fa3 | 559 | } |
IanBenzMaxim | 74:23be10c32fa3 | 560 | |
IanBenzMaxim | 35:5d23395628f6 | 561 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 35:5d23395628f6 | 562 | { |
IanBenzMaxim | 74:23be10c32fa3 | 563 | m_curConfig = config; |
IanBenzMaxim | 35:5d23395628f6 | 564 | } |
IanBenzMaxim | 35:5d23395628f6 | 565 | |
IanBenzMaxim | 74:23be10c32fa3 | 566 | return result; |
IanBenzMaxim | 24:8942d8478d68 | 567 | } |
IanBenzMaxim | 24:8942d8478d68 | 568 | |
IanBenzMaxim | 73:2cecc1372acc | 569 | OneWireMaster::CmdResult DS2465::pollBusy(uint8_t * pStatus) |
IanBenzMaxim | 24:8942d8478d68 | 570 | { |
IanBenzMaxim | 74:23be10c32fa3 | 571 | const unsigned int pollLimit = 200; |
IanBenzMaxim | 74:23be10c32fa3 | 572 | |
IanBenzMaxim | 74:23be10c32fa3 | 573 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 574 | uint8_t status; |
IanBenzMaxim | 74:23be10c32fa3 | 575 | unsigned int pollCount = 0; |
IanBenzMaxim | 47:307dc45952db | 576 | |
IanBenzMaxim | 74:23be10c32fa3 | 577 | do |
IanBenzMaxim | 74:23be10c32fa3 | 578 | { |
IanBenzMaxim | 74:23be10c32fa3 | 579 | result = readMemory(ADDR_STATUS_REG, &status, 1, true); |
IanBenzMaxim | 74:23be10c32fa3 | 580 | if (result != OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 581 | { |
IanBenzMaxim | 74:23be10c32fa3 | 582 | return result; |
IanBenzMaxim | 74:23be10c32fa3 | 583 | } |
IanBenzMaxim | 74:23be10c32fa3 | 584 | if (pStatus != NULL) |
IanBenzMaxim | 74:23be10c32fa3 | 585 | { |
IanBenzMaxim | 74:23be10c32fa3 | 586 | *pStatus = status; |
IanBenzMaxim | 74:23be10c32fa3 | 587 | } |
IanBenzMaxim | 74:23be10c32fa3 | 588 | if (pollCount++ >= pollLimit) |
IanBenzMaxim | 74:23be10c32fa3 | 589 | { |
IanBenzMaxim | 74:23be10c32fa3 | 590 | return OneWireMaster::TimeoutError; |
IanBenzMaxim | 74:23be10c32fa3 | 591 | } |
IanBenzMaxim | 74:23be10c32fa3 | 592 | } while (status & STATUS_1WB); |
IanBenzMaxim | 24:8942d8478d68 | 593 | |
IanBenzMaxim | 74:23be10c32fa3 | 594 | return OneWireMaster::Success; |
IanBenzMaxim | 21:00c94aeb533e | 595 | } |
IanBenzMaxim | 21:00c94aeb533e | 596 | |
IanBenzMaxim | 21:00c94aeb533e | 597 | OneWireMaster::CmdResult DS2465::OWReset(void) |
IanBenzMaxim | 74:23be10c32fa3 | 598 | { |
IanBenzMaxim | 74:23be10c32fa3 | 599 | // 1-Wire reset (Case B) |
IanBenzMaxim | 74:23be10c32fa3 | 600 | // S AD,0 [A] ADDR_CMD_REG [A] 1WRS [A] Sr AD,1 [A] [Status] A [Status] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 601 | // \--------/ |
IanBenzMaxim | 74:23be10c32fa3 | 602 | // Repeat until 1WB bit has changed to 0 |
IanBenzMaxim | 74:23be10c32fa3 | 603 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 604 | |
IanBenzMaxim | 74:23be10c32fa3 | 605 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 606 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 607 | |
IanBenzMaxim | 74:23be10c32fa3 | 608 | buf = CMD_1WRS; |
IanBenzMaxim | 74:23be10c32fa3 | 609 | result = writeMemory(ADDR_CMD_REG, &buf, 1); |
IanBenzMaxim | 21:00c94aeb533e | 610 | |
IanBenzMaxim | 74:23be10c32fa3 | 611 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 612 | { |
IanBenzMaxim | 74:23be10c32fa3 | 613 | result = pollBusy(&buf); |
IanBenzMaxim | 74:23be10c32fa3 | 614 | } |
IanBenzMaxim | 21:00c94aeb533e | 615 | |
IanBenzMaxim | 74:23be10c32fa3 | 616 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 617 | { |
IanBenzMaxim | 74:23be10c32fa3 | 618 | // check for presence detect |
IanBenzMaxim | 74:23be10c32fa3 | 619 | if ((buf & STATUS_PPD) != STATUS_PPD) |
IanBenzMaxim | 74:23be10c32fa3 | 620 | { |
IanBenzMaxim | 74:23be10c32fa3 | 621 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 622 | } |
IanBenzMaxim | 74:23be10c32fa3 | 623 | } |
IanBenzMaxim | 74:23be10c32fa3 | 624 | |
IanBenzMaxim | 74:23be10c32fa3 | 625 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 626 | } |
IanBenzMaxim | 21:00c94aeb533e | 627 | |
IanBenzMaxim | 34:11fffbe98ef9 | 628 | OneWireMaster::CmdResult DS2465::reset(void) |
IanBenzMaxim | 74:23be10c32fa3 | 629 | { |
IanBenzMaxim | 74:23be10c32fa3 | 630 | // Device Reset |
IanBenzMaxim | 74:23be10c32fa3 | 631 | // S AD,0 [A] ADDR_CMD_REG [A] 1WMR [A] Sr AD,1 [A] [SS] A\ P |
IanBenzMaxim | 74:23be10c32fa3 | 632 | // [] indicates from slave |
IanBenzMaxim | 74:23be10c32fa3 | 633 | // SS status byte to read to verify state |
IanBenzMaxim | 74:23be10c32fa3 | 634 | |
IanBenzMaxim | 74:23be10c32fa3 | 635 | OneWireMaster::CmdResult result; |
IanBenzMaxim | 74:23be10c32fa3 | 636 | uint8_t buf; |
IanBenzMaxim | 74:23be10c32fa3 | 637 | |
IanBenzMaxim | 74:23be10c32fa3 | 638 | buf = CMD_1WMR; |
IanBenzMaxim | 74:23be10c32fa3 | 639 | result = writeMemory(ADDR_CMD_REG, &buf, 1); |
IanBenzMaxim | 24:8942d8478d68 | 640 | |
IanBenzMaxim | 74:23be10c32fa3 | 641 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 642 | { |
IanBenzMaxim | 74:23be10c32fa3 | 643 | result = readMemory(ADDR_STATUS_REG, &buf, 1, true); |
IanBenzMaxim | 74:23be10c32fa3 | 644 | } |
IanBenzMaxim | 21:00c94aeb533e | 645 | |
IanBenzMaxim | 74:23be10c32fa3 | 646 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 647 | { |
IanBenzMaxim | 74:23be10c32fa3 | 648 | if ((buf & 0xF7) != 0x10) |
IanBenzMaxim | 74:23be10c32fa3 | 649 | { |
IanBenzMaxim | 74:23be10c32fa3 | 650 | result = OneWireMaster::OperationFailure; |
IanBenzMaxim | 74:23be10c32fa3 | 651 | } |
IanBenzMaxim | 74:23be10c32fa3 | 652 | } |
IanBenzMaxim | 74:23be10c32fa3 | 653 | |
IanBenzMaxim | 74:23be10c32fa3 | 654 | if (result == OneWireMaster::Success) |
IanBenzMaxim | 74:23be10c32fa3 | 655 | { |
IanBenzMaxim | 74:23be10c32fa3 | 656 | OWReset(); // do a command to get 1-Wire master reset out of holding state |
IanBenzMaxim | 74:23be10c32fa3 | 657 | } |
IanBenzMaxim | 74:23be10c32fa3 | 658 | |
IanBenzMaxim | 74:23be10c32fa3 | 659 | return result; |
IanBenzMaxim | 21:00c94aeb533e | 660 | } |