Vincent Belanger / Mbed 2 deprecated APP4

APP 4

Dependencies:   mbed CRC16 mbed-rtos

MEF.cpp@23:d41a23d8f2d7, 2016-02-23 (annotated)

Committer:
manl2003
Date:
Tue Feb 23 14:50:48 2016 +0000
Revision:
23:d41a23d8f2d7
Parent:
20:f0932bfe09ed
Child:
26:f2b37f9dfca9
Mef fix et wrappage du code de debug

Who changed what in which revision?

UserRevisionLine numberNew contents of line
manl2003 10:51ee22e230c7 1 #include "MEF.h"
manl2003 12:715af3660c73 2 #include "CRC16.h"
manl2003 10:51ee22e230c7 3
vinbel93 20:f0932bfe09ed 4 void MEF::init()
vinbel93 20:f0932bfe09ed 5 {
vinbel93 20:f0932bfe09ed 6 m_InputBuffer.reset();
vinbel93 20:f0932bfe09ed 7 m_BSPayload.reset();
vinbel93 20:f0932bfe09ed 8 memset(m_CPayload, 0, 80);
vinbel93 20:f0932bfe09ed 9 m_Counter = 0;
vinbel93 20:f0932bfe09ed 10 m_DataSize = 0;
vinbel93 20:f0932bfe09ed 11 m_CRC = 0;
vinbel93 20:f0932bfe09ed 12 }
vinbel93 20:f0932bfe09ed 13
manl2003 10:51ee22e230c7 14 void MEF::ReceiveBit(bool bit)
manl2003 10:51ee22e230c7 15 {
manl2003 10:51ee22e230c7 16 switch (state)
manl2003 10:51ee22e230c7 17 {
manl2003 23:d41a23d8f2d7 18 case PREAMBLE :
manl2003 23:d41a23d8f2d7 19 default :
manl2003 10:51ee22e230c7 20 {
manl2003 23:d41a23d8f2d7 21 m_InputBuffer[0] = m_InputBuffer[1];
manl2003 23:d41a23d8f2d7 22 m_InputBuffer[1] = m_InputBuffer[2];
manl2003 23:d41a23d8f2d7 23 m_InputBuffer[2] = m_InputBuffer[3];
manl2003 23:d41a23d8f2d7 24 m_InputBuffer[3] = m_InputBuffer[4];
manl2003 23:d41a23d8f2d7 25 m_InputBuffer[4] = m_InputBuffer[5];
manl2003 23:d41a23d8f2d7 26 m_InputBuffer[5] = m_InputBuffer[6];
manl2003 23:d41a23d8f2d7 27 m_InputBuffer[6] = m_InputBuffer[7];
manl2003 23:d41a23d8f2d7 28 m_InputBuffer[7] = bit;
manl2003 23:d41a23d8f2d7 29
manl2003 23:d41a23d8f2d7 30 if(preambleChecker())
manl2003 10:51ee22e230c7 31 {
manl2003 23:d41a23d8f2d7 32 state = START;
manl2003 10:51ee22e230c7 33 }
manl2003 10:51ee22e230c7 34
manl2003 10:51ee22e230c7 35 }break;
manl2003 10:51ee22e230c7 36 case START :
manl2003 10:51ee22e230c7 37 {
manl2003 10:51ee22e230c7 38 m_InputBuffer[m_Counter] = bit;
manl2003 10:51ee22e230c7 39 m_Counter++;
manl2003 23:d41a23d8f2d7 40 if(m_Counter >= 8)
manl2003 10:51ee22e230c7 41 {
vinbel93 20:f0932bfe09ed 42 if(startChecker())
vinbel93 20:f0932bfe09ed 43 {
vinbel93 20:f0932bfe09ed 44 state = TYPE;
vinbel93 20:f0932bfe09ed 45 m_Counter = 0;
vinbel93 20:f0932bfe09ed 46 }
vinbel93 20:f0932bfe09ed 47 else
vinbel93 20:f0932bfe09ed 48 {
vinbel93 20:f0932bfe09ed 49 //Bluboom
vinbel93 20:f0932bfe09ed 50 _decodeError();
vinbel93 20:f0932bfe09ed 51 state = PREAMBLE;
vinbel93 20:f0932bfe09ed 52 init();
vinbel93 20:f0932bfe09ed 53 }
vinbel93 20:f0932bfe09ed 54 }
manl2003 10:51ee22e230c7 55 }break;
manl2003 10:51ee22e230c7 56 case TYPE :
manl2003 10:51ee22e230c7 57 {
manl2003 10:51ee22e230c7 58 m_Counter ++;
manl2003 23:d41a23d8f2d7 59 if(m_Counter >= 8)
manl2003 10:51ee22e230c7 60 {
manl2003 10:51ee22e230c7 61 state = LENGTH;
manl2003 10:51ee22e230c7 62 m_Counter = 0;
manl2003 10:51ee22e230c7 63 }
manl2003 10:51ee22e230c7 64
manl2003 10:51ee22e230c7 65 }break;
manl2003 10:51ee22e230c7 66 case LENGTH :
manl2003 10:51ee22e230c7 67 {
manl2003 10:51ee22e230c7 68 m_InputBuffer[m_Counter] = bit;
manl2003 10:51ee22e230c7 69 m_Counter++;
manl2003 23:d41a23d8f2d7 70 if(m_Counter >= 8)
manl2003 10:51ee22e230c7 71 {
manl2003 10:51ee22e230c7 72 state = DATA;
manl2003 10:51ee22e230c7 73 m_DataSize = calculateSize();
manl2003 10:51ee22e230c7 74 m_Counter = 0;
manl2003 10:51ee22e230c7 75 }
manl2003 10:51ee22e230c7 76
manl2003 10:51ee22e230c7 77 }break;
manl2003 10:51ee22e230c7 78 case DATA :
manl2003 10:51ee22e230c7 79 {
manl2003 12:715af3660c73 80 m_BSPayload[m_Counter] = bit;
vinbel93 20:f0932bfe09ed 81 if (((m_Counter + 1) % 8) == 0 && m_Counter != 0)
manl2003 12:715af3660c73 82 {
vinbel93 20:f0932bfe09ed 83 m_CPayload[(m_Counter + 1)/ 8 - 1] = (m_BSPayload[m_Counter] << 0) | (m_BSPayload[m_Counter - 1] << 1) | (m_BSPayload[m_Counter - 2] << 2) | (m_BSPayload[m_Counter - 3] << 3) | (m_BSPayload[m_Counter - 4] << 4) | (m_BSPayload[m_Counter - 5] << 5) | (m_BSPayload[m_Counter - 6] << 6) | (m_BSPayload[m_Counter - 7] << 7);
manl2003 12:715af3660c73 84 }
manl2003 12:715af3660c73 85 m_Counter++;
manl2003 23:d41a23d8f2d7 86 if(m_Counter >= m_DataSize*8)
manl2003 12:715af3660c73 87 {
manl2003 12:715af3660c73 88 state = CRC16STATE;
vinbel93 20:f0932bfe09ed 89 m_CRC = CRC16::calculateCRC16(m_CPayload, m_DataSize);
vinbel93 20:f0932bfe09ed 90 m_Counter = 0;
manl2003 12:715af3660c73 91 }
manl2003 10:51ee22e230c7 92 }break;
manl2003 12:715af3660c73 93 case CRC16STATE :
manl2003 10:51ee22e230c7 94 {
manl2003 12:715af3660c73 95 m_InputBuffer[m_Counter] = bit;
manl2003 12:715af3660c73 96 m_Counter++;
manl2003 23:d41a23d8f2d7 97 if(m_Counter >= 16)
manl2003 12:715af3660c73 98 {
manl2003 12:715af3660c73 99 if(!compareCRC())
manl2003 12:715af3660c73 100 {
manl2003 12:715af3660c73 101 //BOOMBOOM
vinbel93 20:f0932bfe09ed 102 _decodeError();
vinbel93 20:f0932bfe09ed 103 state = PREAMBLE;
vinbel93 20:f0932bfe09ed 104 init();
manl2003 12:715af3660c73 105 }
manl2003 16:cf433716f8d6 106 else
manl2003 16:cf433716f8d6 107 {
vinbel93 20:f0932bfe09ed 108 state = END;
manl2003 16:cf433716f8d6 109 }
manl2003 12:715af3660c73 110 m_Counter = 0;
manl2003 12:715af3660c73 111 }
manl2003 10:51ee22e230c7 112
manl2003 10:51ee22e230c7 113 }break;
manl2003 10:51ee22e230c7 114 case END :
manl2003 10:51ee22e230c7 115 {
manl2003 12:715af3660c73 116 m_InputBuffer[m_Counter] = bit;
manl2003 12:715af3660c73 117 m_Counter++;
manl2003 23:d41a23d8f2d7 118 if(m_Counter >= 8)
manl2003 12:715af3660c73 119 {
vinbel93 20:f0932bfe09ed 120 if(startChecker())
vinbel93 20:f0932bfe09ed 121 {
vinbel93 20:f0932bfe09ed 122 state = PREAMBLE;
vinbel93 20:f0932bfe09ed 123 m_Counter = 0;
vinbel93 20:f0932bfe09ed 124 //CALLBACK
vinbel93 20:f0932bfe09ed 125 _decodeCallback(m_BSPayload, m_DataSize);
vinbel93 20:f0932bfe09ed 126 }
vinbel93 20:f0932bfe09ed 127 else
vinbel93 20:f0932bfe09ed 128 {
vinbel93 20:f0932bfe09ed 129 //BOOMBOOM
vinbel93 20:f0932bfe09ed 130 _decodeError();
vinbel93 20:f0932bfe09ed 131 state = PREAMBLE;
vinbel93 20:f0932bfe09ed 132 init();
vinbel93 20:f0932bfe09ed 133 }
manl2003 12:715af3660c73 134 }
vinbel93 20:f0932bfe09ed 135
manl2003 10:51ee22e230c7 136 }break;
manl2003 10:51ee22e230c7 137 }
manl2003 16:cf433716f8d6 138 _updateState(state);
manl2003 10:51ee22e230c7 139 }
manl2003 10:51ee22e230c7 140
manl2003 10:51ee22e230c7 141 bool MEF::preambleChecker()
manl2003 10:51ee22e230c7 142 {
manl2003 10:51ee22e230c7 143 bool temp = false;
manl2003 10:51ee22e230c7 144 bool resultTest1 = true, resultTest2 = true;
manl2003 10:51ee22e230c7 145 for(int i = 0; i < 8; i++)
manl2003 10:51ee22e230c7 146 {
manl2003 10:51ee22e230c7 147 if(m_InputBuffer[i] != temp)
manl2003 10:51ee22e230c7 148 {
manl2003 10:51ee22e230c7 149 resultTest1 = false;
manl2003 10:51ee22e230c7 150 }
manl2003 10:51ee22e230c7 151 if(m_InputBuffer[i] == temp)
manl2003 10:51ee22e230c7 152 {
manl2003 10:51ee22e230c7 153 resultTest2 = false;
manl2003 10:51ee22e230c7 154 }
manl2003 10:51ee22e230c7 155 temp = !temp;
manl2003 10:51ee22e230c7 156 }
manl2003 10:51ee22e230c7 157 return resultTest1 || resultTest2;
manl2003 10:51ee22e230c7 158 }
manl2003 10:51ee22e230c7 159
manl2003 10:51ee22e230c7 160 bool MEF::startChecker()
manl2003 10:51ee22e230c7 161 {
manl2003 10:51ee22e230c7 162 if(m_InputBuffer[0] == 0 && m_InputBuffer[1] == 1 && m_InputBuffer[2] == 1 && m_InputBuffer[3] == 1 && m_InputBuffer[4] == 1 && m_InputBuffer[5] == 1 && m_InputBuffer[6] == 1 && m_InputBuffer[7] == 0)
manl2003 10:51ee22e230c7 163 {
manl2003 10:51ee22e230c7 164 return true;
manl2003 10:51ee22e230c7 165 }
manl2003 10:51ee22e230c7 166 return false;
manl2003 10:51ee22e230c7 167 }
manl2003 10:51ee22e230c7 168
manl2003 10:51ee22e230c7 169 int MEF::calculateSize()
manl2003 10:51ee22e230c7 170 {
manl2003 10:51ee22e230c7 171 return (m_InputBuffer[0] << 7) | (m_InputBuffer[1] << 6) | (m_InputBuffer[2] << 5) | (m_InputBuffer[3] << 4) | (m_InputBuffer[4] << 3) | (m_InputBuffer[5] << 2) | (m_InputBuffer[6] << 1) | (m_InputBuffer[7] << 0);
manl2003 12:715af3660c73 172 }
manl2003 12:715af3660c73 173
manl2003 12:715af3660c73 174 bool MEF::compareCRC()
manl2003 12:715af3660c73 175 {
vinbel93 20:f0932bfe09ed 176 unsigned short incommingCRC = (m_InputBuffer[0] << 15) |
vinbel93 20:f0932bfe09ed 177 (m_InputBuffer[1] << 14) |
vinbel93 20:f0932bfe09ed 178 (m_InputBuffer[2] << 13) |
vinbel93 20:f0932bfe09ed 179 (m_InputBuffer[3] << 12) |
vinbel93 20:f0932bfe09ed 180 (m_InputBuffer[4] << 11) |
vinbel93 20:f0932bfe09ed 181 (m_InputBuffer[5] << 10) |
vinbel93 20:f0932bfe09ed 182 (m_InputBuffer[6] << 9) |
vinbel93 20:f0932bfe09ed 183 (m_InputBuffer[7] << 8) |
vinbel93 20:f0932bfe09ed 184 (m_InputBuffer[8] << 7) |
vinbel93 20:f0932bfe09ed 185 (m_InputBuffer[9] << 6) |
vinbel93 20:f0932bfe09ed 186 (m_InputBuffer[10] << 5) |
vinbel93 20:f0932bfe09ed 187 (m_InputBuffer[11] << 4) |
vinbel93 20:f0932bfe09ed 188 (m_InputBuffer[12] << 3) |
vinbel93 20:f0932bfe09ed 189 (m_InputBuffer[13] << 2) |
vinbel93 20:f0932bfe09ed 190 (m_InputBuffer[14] << 1) |
vinbel93 20:f0932bfe09ed 191 (m_InputBuffer[15] << 0);
vinbel93 20:f0932bfe09ed 192
manl2003 12:715af3660c73 193 return m_CRC == incommingCRC;
manl2003 12:715af3660c73 194 }
manl2003 12:715af3660c73 195
manl2003 12:715af3660c73 196 void MEF::error()
manl2003 12:715af3660c73 197 {
manl2003 12:715af3660c73 198
manl2003 10:51ee22e230c7 199 }