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Gets messages form the pc and translates it to I2C and back.
Dependencies: DevInterfaces I2Cinterfaces MCP4725 mbed
Translator.cpp@0:b40341017545, 2016-05-18 (annotated)
- Committer:
- katrijnverhasselt
- Date:
- Wed May 18 11:22:41 2016 +0000
- Revision:
- 0:b40341017545
- Child:
- 1:8ba039abd9b8
Full program
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
katrijnverhasselt | 0:b40341017545 | 1 | #include "Translator.h" |
katrijnverhasselt | 0:b40341017545 | 2 | |
katrijnverhasselt | 0:b40341017545 | 3 | Translator::MessageInfo::MessageInfo() |
katrijnverhasselt | 0:b40341017545 | 4 | : CommandType(NONE), |
katrijnverhasselt | 0:b40341017545 | 5 | Channel(0), |
katrijnverhasselt | 0:b40341017545 | 6 | DacValue(0) |
katrijnverhasselt | 0:b40341017545 | 7 | {} |
katrijnverhasselt | 0:b40341017545 | 8 | |
katrijnverhasselt | 0:b40341017545 | 9 | bool Translator::MessageInfo::IsNone() { |
katrijnverhasselt | 0:b40341017545 | 10 | return CommandType == NONE; |
katrijnverhasselt | 0:b40341017545 | 11 | } |
katrijnverhasselt | 0:b40341017545 | 12 | |
katrijnverhasselt | 0:b40341017545 | 13 | bool Translator::MessageInfo::IsRead() { |
katrijnverhasselt | 0:b40341017545 | 14 | return CommandType == READ; |
katrijnverhasselt | 0:b40341017545 | 15 | } |
katrijnverhasselt | 0:b40341017545 | 16 | |
katrijnverhasselt | 0:b40341017545 | 17 | bool Translator::MessageInfo::IsWrite() { |
katrijnverhasselt | 0:b40341017545 | 18 | return CommandType == WRITE; |
katrijnverhasselt | 0:b40341017545 | 19 | } |
katrijnverhasselt | 0:b40341017545 | 20 | |
katrijnverhasselt | 0:b40341017545 | 21 | bool Translator::MessageInfo::IsOption() { |
katrijnverhasselt | 0:b40341017545 | 22 | return CommandType = OPTION; |
katrijnverhasselt | 0:b40341017545 | 23 | } |
katrijnverhasselt | 0:b40341017545 | 24 | |
katrijnverhasselt | 0:b40341017545 | 25 | int Translator::Rules::StartCharIndex = 0; |
katrijnverhasselt | 0:b40341017545 | 26 | int8_t Translator::Rules::StartChar = '!'; |
katrijnverhasselt | 0:b40341017545 | 27 | int Translator::Rules::CharsToReadIndex = 1; |
katrijnverhasselt | 0:b40341017545 | 28 | int Translator::Rules::CharsToReadOffset = CharsToReadIndex+1; |
katrijnverhasselt | 0:b40341017545 | 29 | int Translator::Rules::rwoIndex = 2; |
katrijnverhasselt | 0:b40341017545 | 30 | int8_t Translator::Rules::ReadChar = 'r'; |
katrijnverhasselt | 0:b40341017545 | 31 | int8_t Translator::Rules::WriteChar = 'w'; |
katrijnverhasselt | 0:b40341017545 | 32 | int8_t Translator::Rules::OptionChar = 'o'; |
katrijnverhasselt | 0:b40341017545 | 33 | int8_t Translator::Rules::ErrorChar = 'e'; |
katrijnverhasselt | 0:b40341017545 | 34 | //int Translator::Rules::ChannelIndex = 3; |
katrijnverhasselt | 0:b40341017545 | 35 | int Translator::Rules::DataIndex = 3; |
katrijnverhasselt | 0:b40341017545 | 36 | int Translator::Rules::DataLength = 2; |
katrijnverhasselt | 0:b40341017545 | 37 | |
katrijnverhasselt | 0:b40341017545 | 38 | int Translator::Rules::ReadCmdSize = rwoIndex + 1; |
katrijnverhasselt | 0:b40341017545 | 39 | int Translator::Rules::WriteCmdSize = DataIndex + DataLength; |
katrijnverhasselt | 0:b40341017545 | 40 | int Translator::Rules::ErrorCmdSize = rwoIndex + 1; |
katrijnverhasselt | 0:b40341017545 | 41 | |
katrijnverhasselt | 0:b40341017545 | 42 | |
katrijnverhasselt | 0:b40341017545 | 43 | Translator::Translator() |
katrijnverhasselt | 0:b40341017545 | 44 | : _rawMessage(0), |
katrijnverhasselt | 0:b40341017545 | 45 | _size(0) |
katrijnverhasselt | 0:b40341017545 | 46 | {} |
katrijnverhasselt | 0:b40341017545 | 47 | |
katrijnverhasselt | 0:b40341017545 | 48 | |
katrijnverhasselt | 0:b40341017545 | 49 | bool Translator::Translate(MessageInfo info, int8_t** cmd, int* const cmdSize) { |
katrijnverhasselt | 0:b40341017545 | 50 | switch (info.CommandType) { |
katrijnverhasselt | 0:b40341017545 | 51 | case MessageInfo::NONE: |
katrijnverhasselt | 0:b40341017545 | 52 | return false; |
katrijnverhasselt | 0:b40341017545 | 53 | case MessageInfo::READ: |
katrijnverhasselt | 0:b40341017545 | 54 | *cmdSize = Rules::ReadCmdSize; |
katrijnverhasselt | 0:b40341017545 | 55 | // Add extra character for '\0' |
katrijnverhasselt | 0:b40341017545 | 56 | *cmd = new int8_t[Rules::ReadCmdSize+1]; |
katrijnverhasselt | 0:b40341017545 | 57 | (*cmd)[Rules::StartCharIndex] = Rules::StartChar; |
katrijnverhasselt | 0:b40341017545 | 58 | (*cmd)[Rules::CharsToReadIndex] = Rules::ReadCmdSize-Rules::CharsToReadOffset; |
katrijnverhasselt | 0:b40341017545 | 59 | (*cmd)[Rules::rwoIndex] = Rules::ReadChar; |
katrijnverhasselt | 0:b40341017545 | 60 | //(*cmd)[Rules::ChannelIndex] = info.Channel; |
katrijnverhasselt | 0:b40341017545 | 61 | (*cmd)[Rules::ReadCmdSize] = '\0'; |
katrijnverhasselt | 0:b40341017545 | 62 | break; |
katrijnverhasselt | 0:b40341017545 | 63 | case MessageInfo::WRITE: |
katrijnverhasselt | 0:b40341017545 | 64 | *cmdSize = Rules::WriteCmdSize; |
katrijnverhasselt | 0:b40341017545 | 65 | // Add extra character for '\0' |
katrijnverhasselt | 0:b40341017545 | 66 | *cmd = new int8_t[Rules::WriteCmdSize+1]; |
katrijnverhasselt | 0:b40341017545 | 67 | (*cmd)[Rules::StartCharIndex] = Rules::StartChar; |
katrijnverhasselt | 0:b40341017545 | 68 | (*cmd)[Rules::CharsToReadIndex] = Rules::WriteCmdSize - Rules::CharsToReadOffset; |
katrijnverhasselt | 0:b40341017545 | 69 | (*cmd)[Rules::rwoIndex] = Rules::WriteChar; |
katrijnverhasselt | 0:b40341017545 | 70 | //(*cmd)[Rules::ChannelIndex] = info.Channel; |
katrijnverhasselt | 0:b40341017545 | 71 | for (int i = 0; i < Rules::DataLength; i++) |
katrijnverhasselt | 0:b40341017545 | 72 | (*cmd)[Rules::DataIndex + i] = (info.DacValue >> (Rules::DataLength - i - 1) * 8) & 0xFF; |
katrijnverhasselt | 0:b40341017545 | 73 | (*cmd)[Rules::WriteCmdSize] = '\0'; |
katrijnverhasselt | 0:b40341017545 | 74 | break; |
katrijnverhasselt | 0:b40341017545 | 75 | case MessageInfo::OPTION: |
katrijnverhasselt | 0:b40341017545 | 76 | // Not implemented yet |
katrijnverhasselt | 0:b40341017545 | 77 | return false; |
katrijnverhasselt | 0:b40341017545 | 78 | case MessageInfo::ERROR: |
katrijnverhasselt | 0:b40341017545 | 79 | *cmdSize = Rules::ErrorCmdSize; |
katrijnverhasselt | 0:b40341017545 | 80 | // Add extra character for '\0' |
katrijnverhasselt | 0:b40341017545 | 81 | *cmd = new int8_t[Rules::ErrorCmdSize+1]; |
katrijnverhasselt | 0:b40341017545 | 82 | (*cmd)[Rules::StartCharIndex] = Rules::StartChar; |
katrijnverhasselt | 0:b40341017545 | 83 | (*cmd)[Rules::CharsToReadIndex] = Rules::ErrorCmdSize - Rules::CharsToReadOffset; |
katrijnverhasselt | 0:b40341017545 | 84 | (*cmd)[Rules::rwoIndex] = Rules::ErrorChar; |
katrijnverhasselt | 0:b40341017545 | 85 | (*cmd)[Rules::ErrorCmdSize] = '\0'; |
katrijnverhasselt | 0:b40341017545 | 86 | break; |
katrijnverhasselt | 0:b40341017545 | 87 | default: |
katrijnverhasselt | 0:b40341017545 | 88 | return false; |
katrijnverhasselt | 0:b40341017545 | 89 | } |
katrijnverhasselt | 0:b40341017545 | 90 | |
katrijnverhasselt | 0:b40341017545 | 91 | return true; |
katrijnverhasselt | 0:b40341017545 | 92 | } |
katrijnverhasselt | 0:b40341017545 | 93 | |
katrijnverhasselt | 0:b40341017545 | 94 | |
katrijnverhasselt | 0:b40341017545 | 95 | bool Translator::Translate(const int8_t* const cmd, int cmdSize, MessageInfo* const info) { |
katrijnverhasselt | 0:b40341017545 | 96 | // Check starting character |
katrijnverhasselt | 0:b40341017545 | 97 | if (cmd[Rules::StartCharIndex] != Rules::StartChar) { |
katrijnverhasselt | 0:b40341017545 | 98 | printf("No start char"); |
katrijnverhasselt | 0:b40341017545 | 99 | return false; |
katrijnverhasselt | 0:b40341017545 | 100 | } |
katrijnverhasselt | 0:b40341017545 | 101 | // Check length of command |
katrijnverhasselt | 0:b40341017545 | 102 | if (cmd[Rules::CharsToReadIndex] + Rules::CharsToReadOffset != cmdSize) { |
katrijnverhasselt | 0:b40341017545 | 103 | printf("Incorrect size"); |
katrijnverhasselt | 0:b40341017545 | 104 | return false; |
katrijnverhasselt | 0:b40341017545 | 105 | } |
katrijnverhasselt | 0:b40341017545 | 106 | |
katrijnverhasselt | 0:b40341017545 | 107 | // Populate info |
katrijnverhasselt | 0:b40341017545 | 108 | switch (cmd[Rules::rwoIndex]) { |
katrijnverhasselt | 0:b40341017545 | 109 | case 'r': |
katrijnverhasselt | 0:b40341017545 | 110 | info->CommandType = MessageInfo::READ; |
katrijnverhasselt | 0:b40341017545 | 111 | break; |
katrijnverhasselt | 0:b40341017545 | 112 | case 'w': |
katrijnverhasselt | 0:b40341017545 | 113 | info->CommandType = MessageInfo::WRITE; |
katrijnverhasselt | 0:b40341017545 | 114 | break; |
katrijnverhasselt | 0:b40341017545 | 115 | case 'o': |
katrijnverhasselt | 0:b40341017545 | 116 | info->CommandType = MessageInfo::OPTION; |
katrijnverhasselt | 0:b40341017545 | 117 | break; |
katrijnverhasselt | 0:b40341017545 | 118 | default: |
katrijnverhasselt | 0:b40341017545 | 119 | return false; |
katrijnverhasselt | 0:b40341017545 | 120 | } |
katrijnverhasselt | 0:b40341017545 | 121 | //info->Channel = cmd[Rules::ChannelIndex]; |
katrijnverhasselt | 0:b40341017545 | 122 | info->DacValue = ByteUnshift(cmd+Rules::DataIndex, Rules::DataLength); |
katrijnverhasselt | 0:b40341017545 | 123 | return true; |
katrijnverhasselt | 0:b40341017545 | 124 | } |
katrijnverhasselt | 0:b40341017545 | 125 | |
katrijnverhasselt | 0:b40341017545 | 126 | |
katrijnverhasselt | 0:b40341017545 | 127 | void Translator::ResetMessageInfo() { |
katrijnverhasselt | 0:b40341017545 | 128 | _message.CommandType = MessageInfo::NONE; |
katrijnverhasselt | 0:b40341017545 | 129 | _message.Channel = 0; |
katrijnverhasselt | 0:b40341017545 | 130 | _message.DacValue = 0; |
katrijnverhasselt | 0:b40341017545 | 131 | } |
katrijnverhasselt | 0:b40341017545 | 132 | |
katrijnverhasselt | 0:b40341017545 | 133 | void Translator::InvalidateMessage() { |
katrijnverhasselt | 0:b40341017545 | 134 | _rawMessage = 0; |
katrijnverhasselt | 0:b40341017545 | 135 | _size = 0; |
katrijnverhasselt | 0:b40341017545 | 136 | } |