amiro-os / components / FileSystemInputOutput / FileSystemInputOutputBase.cpp @ a07a7a1c
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| 1 | 58fe0e0b | Thomas Schöpping | #include <amiro/FileSystemInputOutput/FileSystemInputOutputBase.hpp> |
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| 2 | |||
| 3 | using namespace amiro; |
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| 4 | using namespace amiro::fileSystemIo; |
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| 5 | |||
| 6 | msg_t |
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| 7 | FileSystemIoBase::init() |
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| 8 | {
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| 9 | msg_t returnValue = OK; |
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| 10 | |||
| 11 | // Get the preamble
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| 12 | const uint8_t bufferSize = sizeof(FileSystemIoBase::preamble_1_1); |
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| 13 | uint8_t buffer[bufferSize]; |
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| 14 | chFileStreamSeek((BaseFileStream*)&at24c01, offsetof(FileSystemIoBase::preamble_1_1, magicByte)); |
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| 15 | const size_t bytesRead = chSequentialStreamRead((BaseFileStream*)&at24c01, (uint8_t*) buffer, bufferSize);
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| 16 | |||
| 17 | // reading failed -> error
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| 18 | if (bytesRead != bufferSize) {
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| 19 | returnValue |= IO_ERROR; |
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| 20 | return returnValue;
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| 21 | } |
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| 22 | |||
| 23 | // magic byte is incorrect -> error
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| 24 | if (buffer[offsetof(FileSystemIoBase::preamble_1_1, magicByte)] != magicByteValue()) {
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| 25 | returnValue |= WRONG_MAGICBYTE_VALUE; |
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| 26 | return returnValue;
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| 27 | } |
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| 28 | |||
| 29 | // BSMV is incorrect -> error
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| 30 | if (buffer[offsetof(FileSystemIoBase::preamble_1_1, byteStructureMajorVersion)] != BSMV) {
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| 31 | returnValue |= WRONG_BSMV; |
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| 32 | return returnValue;
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| 33 | } |
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| 34 | |||
| 35 | // bsmv in smaller -> initialize
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| 36 | if (buffer[offsetof(FileSystemIoBase::preamble_1_1, byteStructureMinorVersion)] < bsmv) {
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| 37 | returnValue |= WRONG_bsmv; |
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| 38 | // initialize all missing data
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| 39 | for (uint8_t v = bsmv; v > buffer[offsetof(FileSystemIoBase::preamble_1_1, byteStructureMinorVersion)]; --v)
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| 40 | {
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| 41 | returnValue |= initPreamble(BSMV, v, false);
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| 42 | } |
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| 43 | } |
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| 44 | |||
| 45 | // HMV is incorrect -> error
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| 46 | if (buffer[offsetof(FileSystemIoBase::preamble_1_1, hardwareMajorVersion)] != HMV) {
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| 47 | returnValue |= WRONG_HMV; |
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| 48 | return returnValue;
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| 49 | } |
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| 50 | |||
| 51 | // hmv is incorrect -> error
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| 52 | if (buffer[offsetof(FileSystemIoBase::preamble_1_1, hardwareMinorVersion)] >= hmv) {
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| 53 | returnValue |= WRONG_hmv; |
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| 54 | } |
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| 55 | |||
| 56 | return returnValue;
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| 57 | } |
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| 58 | |||
| 59 | msg_t |
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| 60 | FileSystemIoBase:: |
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| 61 | getCheck() {
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| 62 | |||
| 63 | // Get the preamble
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| 64 | const uint8_t bufferSize = sizeof(FileSystemIoBase::preamble_1_1); |
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| 65 | uint8_t buffer[bufferSize]; |
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| 66 | chFileStreamSeek((BaseFileStream*)&at24c01, offsetof(FileSystemIoBase::preamble_1_1, magicByte)); |
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| 67 | const size_t bytesRead = chSequentialStreamRead((BaseFileStream*)&at24c01, (uint8_t*) buffer, bufferSize);
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| 68 | |||
| 69 | if (bytesRead != bufferSize) {
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| 70 | return IO_ERROR;
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| 71 | } else if (buffer[offsetof(FileSystemIoBase::preamble_1_1, magicByte)] != magicByteValue()) { |
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| 72 | return WRONG_MAGICBYTE_VALUE;
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| 73 | } else if (buffer[offsetof(FileSystemIoBase::preamble_1_1, byteStructureMajorVersion)] != BSMV) { |
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| 74 | return WRONG_BSMV;
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| 75 | } else if (buffer[offsetof(FileSystemIoBase::preamble_1_1, byteStructureMinorVersion)] < bsmv) { |
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| 76 | return WRONG_bsmv;
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| 77 | } else if (buffer[offsetof(FileSystemIoBase::preamble_1_1, hardwareMajorVersion)] != HMV) { |
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| 78 | return WRONG_HMV;
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| 79 | } else if (buffer[offsetof(FileSystemIoBase::preamble_1_1, hardwareMinorVersion)] < hmv) { |
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| 80 | return WRONG_hmv;
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| 81 | } else {
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| 82 | return OK;
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| 83 | } |
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| 84 | } |
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| 85 | |||
| 86 | msg_t |
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| 87 | FileSystemIoBase::initPreamble(const uint8_t BSMV, const uint8_t bsmv, const bool strict) |
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| 88 | {
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| 89 | uint8_t buffer[3] = {};
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| 90 | |||
| 91 | if (strict) {
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| 92 | // initialize the magic byte
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| 93 | chFileStreamSeek((BaseFileStream*)&this->at24c01, offsetof(FileSystemIoBase::preamble_1_1, magicByte));
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| 94 | buffer[0] = magicByteValue();
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| 95 | if (chSequentialStreamWrite((BaseFileStream*)&this->at24c01, buffer, 1) != 1) { |
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| 96 | return IO_ERROR;
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| 97 | } |
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| 98 | } |
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| 99 | |||
| 100 | switch (BSMV)
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| 101 | {
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| 102 | case 1: |
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| 103 | if (strict) {
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| 104 | // initialize the BSMV
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| 105 | chFileStreamSeek((BaseFileStream*)&this->at24c01, offsetof(FileSystemIoBase::preamble_1_1, byteStructureMajorVersion));
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| 106 | buffer[0] = BSMV;
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| 107 | if (chSequentialStreamWrite((BaseFileStream*)&this->at24c01, buffer, 1) != 1) { |
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| 108 | return IO_ERROR;
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| 109 | } |
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| 110 | } |
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| 111 | // initialize the bsmv
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| 112 | chFileStreamSeek((BaseFileStream*)&this->at24c01, offsetof(FileSystemIoBase::preamble_1_1, byteStructureMinorVersion));
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| 113 | buffer[0] = bsmv;
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| 114 | if (chSequentialStreamWrite((BaseFileStream*)&this->at24c01, buffer, 1) != 1) { |
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| 115 | return IO_ERROR;
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| 116 | } |
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| 117 | // initialize the content
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| 118 | switch (bsmv)
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| 119 | {
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| 120 | case 2: |
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| 121 | // initialize the board ID
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| 122 | chFileStreamSeek((BaseFileStream*)&this->at24c01, offsetof(FileSystemIoBase::preamble_1_2, boardId));
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| 123 | buffer[0] = 0; |
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| 124 | if (chSequentialStreamWrite((BaseFileStream*)&this->at24c01, buffer, 1) != 1) { |
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| 125 | return IO_ERROR;
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| 126 | } |
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| 127 | if (!strict) {
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| 128 | break;
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| 129 | } |
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| 130 | |||
| 131 | case 1: |
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| 132 | // initialize the bsmv, the HMV and the hmv
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| 133 | chFileStreamSeek((BaseFileStream*)&this->at24c01, offsetof(FileSystemIoBase::preamble_1_1, byteStructureMinorVersion));
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| 134 | buffer[0] = bsmv;
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| 135 | buffer[1] = this->HMV; |
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| 136 | buffer[2] = this->hmv; |
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| 137 | if (chSequentialStreamWrite((BaseFileStream*)&this->at24c01, buffer, 3) != 3) { |
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| 138 | return IO_ERROR;
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| 139 | } |
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| 140 | if (!strict) {
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| 141 | break;
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| 142 | } |
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| 143 | |||
| 144 | default:
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| 145 | break;
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| 146 | |||
| 147 | } |
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| 148 | break;
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| 149 | |||
| 150 | default:
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| 151 | break;
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| 152 | } |
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| 153 | |||
| 154 | return OK;
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| 155 | } |
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| 156 | |||
| 157 | msg_t |
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| 158 | FileSystemIoBase:: |
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| 159 | resetMemory() {
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| 160 | return initPreamble(this->BSMV, this->bsmv, true); |
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| 161 | } |
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| 162 | |||
| 163 | msg_t |
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| 164 | FileSystemIoBase:: |
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| 165 | getBoardId (uint8_t *buffer) {
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| 166 | |||
| 167 | msg_t bytesRead = 0;
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| 168 | // Work around, because stm32f1 cannot read a single byte
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| 169 | const uint8_t bufferSize = 2; |
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| 170 | uint8_t bufferTmp[bufferSize] = {};
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| 171 | |||
| 172 | // Get the data out of the memory
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| 173 | switch (this->BSMV) { |
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| 174 | case 0x01u: |
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| 175 | // Set the pointer to the address
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| 176 | chFileStreamSeek((BaseFileStream*)&at24c01, offsetof(FileSystemIoBase::preamble_1_2, boardId)); |
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| 177 | if (this->bsmv >= 0x02u) { |
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| 178 | bytesRead = chSequentialStreamRead((BaseFileStream*)&at24c01, (uint8_t*) bufferTmp, bufferSize); |
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| 179 | } else {
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| 180 | return NOT_IMPLEMENTED;
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| 181 | } |
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| 182 | break;
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| 183 | } |
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| 184 | |||
| 185 | // Store only the board id
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| 186 | *buffer = bufferTmp[0];
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| 187 | |||
| 188 | if (bytesRead != bufferSize) {
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| 189 | return IO_ERROR;
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| 190 | } else {
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| 191 | return OK;
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| 192 | } |
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| 193 | } |
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| 194 | |||
| 195 | msg_t |
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| 196 | FileSystemIoBase:: |
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| 197 | setBoardId (uint8_t buffer) {
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| 198 | |||
| 199 | msg_t bytesWritten = 0;
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| 200 | const uint8_t bufferSize = sizeof(uint8_t); |
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| 201 | |||
| 202 | // Get the data out of the memory
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| 203 | switch (this->BSMV) { |
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| 204 | case 0x01u: |
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| 205 | // Set the pointer to the address
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| 206 | chFileStreamSeek((BaseFileStream*)&at24c01, offsetof(FileSystemIoBase::preamble_1_2, boardId)); |
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| 207 | if (this->bsmv >= 0x02u) { |
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| 208 | bytesWritten = chSequentialStreamWrite((BaseFileStream*)&at24c01, (const uint8_t*) &buffer, bufferSize);
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| 209 | } else {
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| 210 | return NOT_IMPLEMENTED;
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| 211 | } |
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| 212 | break;
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| 213 | } |
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| 214 | |||
| 215 | if (bytesWritten != bufferSize) {
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| 216 | return IO_ERROR;
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| 217 | } else {
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| 218 | return OK;
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| 219 | } |
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| 220 | } |