Pradeep Kotipalli / Mbed 2 deprecated COM_MNG_TMTC_SIMPLE

sd 32 update

Dependencies:   FreescaleIAP mbed-rtos mbed

Fork of COM_MNG_TMTC_SIMPLE by Shreesha S

COM_SND_TM_functions.h@72:7460872eef79, 2016-01-19 (annotated)

Committer:
pradeepvk2208
Date:
Tue Jan 19 12:29:15 2016 +0000
Revision:
72:7460872eef79
Parent:
1:a0055b3280c8 
sd update 32

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shreeshas95 1:a0055b3280c8 1 // ***************************************** CONVOLUTION *****************************************
shreeshas95 0:f016e9e8d48b 2 class Convolution{
shreeshas95 0:f016e9e8d48b 3
shreeshas95 0:f016e9e8d48b 4 private:
shreeshas95 0:f016e9e8d48b 5 typedef struct ConvNode{
shreeshas95 0:f016e9e8d48b 6 //next state
shreeshas95 0:f016e9e8d48b 7 //format : 8 bits mapped as [1]xxxx [0]xxxx
shreeshas95 0:f016e9e8d48b 8 unsigned char nextState;
shreeshas95 0:f016e9e8d48b 9
shreeshas95 0:f016e9e8d48b 10 //output
shreeshas95 0:f016e9e8d48b 11 // format : 8 bits mapped as
shreeshas95 0:f016e9e8d48b 12 // **** xxxx{2} [1]-[0] {1} [1]-[0] i.e. ****xxxx
shreeshas95 0:f016e9e8d48b 13 // x = data, * = junk
shreeshas95 0:f016e9e8d48b 14 unsigned char output;
shreeshas95 0:f016e9e8d48b 15 }ConvNode;
shreeshas95 0:f016e9e8d48b 16
shreeshas95 0:f016e9e8d48b 17 ConvNode convStateList[16];
shreeshas95 0:f016e9e8d48b 18
shreeshas95 0:f016e9e8d48b 19 public:
shreeshas95 0:f016e9e8d48b 20 /*
shreeshas95 0:f016e9e8d48b 21 @brief: Constructor : Initialise all the variables
shreeshas95 0:f016e9e8d48b 22 @param: none
shreeshas95 0:f016e9e8d48b 23 @return: none
shreeshas95 0:f016e9e8d48b 24 */
shreeshas95 0:f016e9e8d48b 25 Convolution(){
shreeshas95 0:f016e9e8d48b 26
shreeshas95 0:f016e9e8d48b 27 convStateList[0].nextState = 0x10;
shreeshas95 0:f016e9e8d48b 28 convStateList[1].nextState = 0x32;
shreeshas95 0:f016e9e8d48b 29 convStateList[2].nextState = 0x54;
shreeshas95 0:f016e9e8d48b 30 convStateList[3].nextState = 0x76;
shreeshas95 0:f016e9e8d48b 31 convStateList[4].nextState = 0x98;
shreeshas95 0:f016e9e8d48b 32 convStateList[5].nextState = 0xBA;
shreeshas95 0:f016e9e8d48b 33 convStateList[6].nextState = 0xDC;
shreeshas95 0:f016e9e8d48b 34 convStateList[7].nextState = 0xFE;
shreeshas95 0:f016e9e8d48b 35 convStateList[8].nextState = 0x10;
shreeshas95 0:f016e9e8d48b 36 convStateList[9].nextState = 0x32;
shreeshas95 0:f016e9e8d48b 37 convStateList[10].nextState = 0x54;
shreeshas95 0:f016e9e8d48b 38 convStateList[11].nextState = 0x76;
shreeshas95 0:f016e9e8d48b 39 convStateList[12].nextState = 0x98;
shreeshas95 0:f016e9e8d48b 40 convStateList[13].nextState = 0xBA;
shreeshas95 0:f016e9e8d48b 41 convStateList[14].nextState = 0xDC;
shreeshas95 0:f016e9e8d48b 42 convStateList[15].nextState = 0xFE;
shreeshas95 0:f016e9e8d48b 43
shreeshas95 0:f016e9e8d48b 44 convStateList[0].output = 0x0A;
shreeshas95 0:f016e9e8d48b 45 convStateList[1].output = 0x06;
shreeshas95 0:f016e9e8d48b 46 convStateList[2].output = 0x06;
shreeshas95 0:f016e9e8d48b 47 convStateList[3].output = 0x0A;
shreeshas95 0:f016e9e8d48b 48 convStateList[4].output = 0x09;
shreeshas95 0:f016e9e8d48b 49 convStateList[5].output = 0x05;
shreeshas95 0:f016e9e8d48b 50 convStateList[6].output = 0x05;
shreeshas95 0:f016e9e8d48b 51 convStateList[7].output = 0x09;
shreeshas95 0:f016e9e8d48b 52 convStateList[8].output = 0x05;
shreeshas95 0:f016e9e8d48b 53 convStateList[9].output = 0x09;
shreeshas95 0:f016e9e8d48b 54 convStateList[10].output = 0x09;
shreeshas95 0:f016e9e8d48b 55 convStateList[11].output = 0x05;
shreeshas95 0:f016e9e8d48b 56 convStateList[12].output = 0x06;
shreeshas95 0:f016e9e8d48b 57 convStateList[13].output = 0x0A;
shreeshas95 0:f016e9e8d48b 58 convStateList[14].output = 0x0A;
shreeshas95 0:f016e9e8d48b 59 convStateList[15].output = 0x06;
shreeshas95 0:f016e9e8d48b 60 }
shreeshas95 0:f016e9e8d48b 61
shreeshas95 0:f016e9e8d48b 62
shreeshas95 0:f016e9e8d48b 63 /*
shreeshas95 0:f016e9e8d48b 64 @brief: convolution encode the input bytes : in sync with => (1-TM-Frame -> 2-T-Frame)
shreeshas95 0:f016e9e8d48b 65 @param: inPtr : pointer to input unsigned char array
shreeshas95 0:f016e9e8d48b 66 inLength : length in bytes of input array
shreeshas95 0:f016e9e8d48b 67 outPtr : pointer to the output bytes, define it outside the function
shreeshas95 0:f016e9e8d48b 68 outLength : length of output array in bytes [call by reference, edited inside the function]
shreeshas95 0:f016e9e8d48b 69 @return: none
shreeshas95 0:f016e9e8d48b 70 */
shreeshas95 0:f016e9e8d48b 71 void convolutionEncode(unsigned char *input, unsigned char *output){
shreeshas95 0:f016e9e8d48b 72
shreeshas95 0:f016e9e8d48b 73 // cout << "inside convolution" << endl;
shreeshas95 0:f016e9e8d48b 74
shreeshas95 0:f016e9e8d48b 75 unsigned int convState = 0;
shreeshas95 0:f016e9e8d48b 76
shreeshas95 0:f016e9e8d48b 77 int inBit = 7;
shreeshas95 0:f016e9e8d48b 78 unsigned int inByte = 0;
shreeshas95 0:f016e9e8d48b 79
shreeshas95 0:f016e9e8d48b 80 unsigned int outState = 0;
shreeshas95 0:f016e9e8d48b 81 unsigned int outByte = 0;
shreeshas95 0:f016e9e8d48b 82
shreeshas95 0:f016e9e8d48b 83 for(unsigned int j = 0 ; j < 536 ; ++j){
shreeshas95 0:f016e9e8d48b 84 // printf("j = %u, inByte = %u\n", j, inByte);
shreeshas95 0:f016e9e8d48b 85 // read a new bit from input stream
shreeshas95 0:f016e9e8d48b 86 // cout << "inByte " <<inByte;
shreeshas95 0:f016e9e8d48b 87 unsigned char tempBit = (input[inByte] >> inBit) & 1;
shreeshas95 0:f016e9e8d48b 88 --inBit;
shreeshas95 0:f016e9e8d48b 89
shreeshas95 0:f016e9e8d48b 90 // convolute and write output
shreeshas95 0:f016e9e8d48b 91 switch(outState){
shreeshas95 0:f016e9e8d48b 92 case 0:
shreeshas95 0:f016e9e8d48b 93 outState = 2;
shreeshas95 0:f016e9e8d48b 94 output[outByte] = ( (convStateList[convState].output >> tempBit) & 1 ) << 7;
shreeshas95 0:f016e9e8d48b 95 output[outByte] += ( (convStateList[convState].output >> (tempBit + 2)) & 1 ) << 6;
shreeshas95 0:f016e9e8d48b 96 break;
shreeshas95 0:f016e9e8d48b 97 case 2:
shreeshas95 0:f016e9e8d48b 98 outState = 4;
shreeshas95 0:f016e9e8d48b 99 output[outByte] += ( (convStateList[convState].output >> tempBit) & 1 ) << 5;
shreeshas95 0:f016e9e8d48b 100 output[outByte] += ( (convStateList[convState].output >> (tempBit + 2)) & 1 ) << 4;
shreeshas95 0:f016e9e8d48b 101 break;
shreeshas95 0:f016e9e8d48b 102 case 4:
shreeshas95 0:f016e9e8d48b 103 outState = 6;
shreeshas95 0:f016e9e8d48b 104 output[outByte] += ( (convStateList[convState].output >> tempBit) & 1 ) << 3;
shreeshas95 0:f016e9e8d48b 105 output[outByte] += ( (convStateList[convState].output >> (tempBit + 2)) & 1 ) << 2;
shreeshas95 0:f016e9e8d48b 106 break;
shreeshas95 0:f016e9e8d48b 107 case 6:
shreeshas95 0:f016e9e8d48b 108 outState = 0;
shreeshas95 0:f016e9e8d48b 109 output[outByte] += ( (convStateList[convState].output >> tempBit) & 1 ) << 1;
shreeshas95 0:f016e9e8d48b 110 output[outByte] += ( (convStateList[convState].output >> (tempBit + 2)) & 1 );
shreeshas95 0:f016e9e8d48b 111 ++outByte;
shreeshas95 0:f016e9e8d48b 112 output[outByte] = 0x00;
shreeshas95 0:f016e9e8d48b 113 break;
shreeshas95 0:f016e9e8d48b 114 }
shreeshas95 0:f016e9e8d48b 115
shreeshas95 0:f016e9e8d48b 116 // next state transition
shreeshas95 0:f016e9e8d48b 117 switch(tempBit){
shreeshas95 0:f016e9e8d48b 118 case 0:
shreeshas95 0:f016e9e8d48b 119 convState = (convStateList[convState].nextState) & 0xF;
shreeshas95 0:f016e9e8d48b 120 break;
shreeshas95 0:f016e9e8d48b 121 case 1:
shreeshas95 0:f016e9e8d48b 122 convState = (convStateList[convState].nextState >> 4) & 0xF;
shreeshas95 0:f016e9e8d48b 123 break;
shreeshas95 0:f016e9e8d48b 124 }
shreeshas95 0:f016e9e8d48b 125
shreeshas95 0:f016e9e8d48b 126 if(inBit == -1){
shreeshas95 0:f016e9e8d48b 127 // printf("in byte = %u\n", inByte);
shreeshas95 0:f016e9e8d48b 128 ++inByte;
shreeshas95 0:f016e9e8d48b 129 inBit = 7;
shreeshas95 0:f016e9e8d48b 130 }
shreeshas95 0:f016e9e8d48b 131
shreeshas95 0:f016e9e8d48b 132 }
shreeshas95 0:f016e9e8d48b 133
shreeshas95 0:f016e9e8d48b 134 // printf("normal iteration complete, outByte = %u\n", outByte);
shreeshas95 0:f016e9e8d48b 135
shreeshas95 0:f016e9e8d48b 136 for(unsigned int j = 0 ; j < 4 ; ++j){
shreeshas95 0:f016e9e8d48b 137 // printf("j = %u\n, outByte = %u\n", j, outByte);
shreeshas95 0:f016e9e8d48b 138 // append zero at the end
shreeshas95 0:f016e9e8d48b 139 switch(outState){
shreeshas95 0:f016e9e8d48b 140 case 0:
shreeshas95 0:f016e9e8d48b 141 outState = 2;
shreeshas95 0:f016e9e8d48b 142 output[outByte] = ( (convStateList[convState].output) & 1 ) << 7;
shreeshas95 0:f016e9e8d48b 143 output[outByte] += ( (convStateList[convState].output >> 2) & 1 ) << 6;
shreeshas95 0:f016e9e8d48b 144 break;
shreeshas95 0:f016e9e8d48b 145 case 2:
shreeshas95 0:f016e9e8d48b 146 outState = 4;
shreeshas95 0:f016e9e8d48b 147 output[outByte] += ( (convStateList[convState].output) & 1 ) << 5;
shreeshas95 0:f016e9e8d48b 148 output[outByte] += ( (convStateList[convState].output >> 2) & 1 ) << 4;
shreeshas95 0:f016e9e8d48b 149 break;
shreeshas95 0:f016e9e8d48b 150 case 4:
shreeshas95 0:f016e9e8d48b 151 outState = 6;
shreeshas95 0:f016e9e8d48b 152 output[outByte] += ( (convStateList[convState].output ) & 1 ) << 3;
shreeshas95 0:f016e9e8d48b 153 output[outByte] += ( (convStateList[convState].output >> 2) & 1 ) << 2;
shreeshas95 0:f016e9e8d48b 154 break;
shreeshas95 0:f016e9e8d48b 155 case 6:
shreeshas95 0:f016e9e8d48b 156 outState = 0;
shreeshas95 0:f016e9e8d48b 157 output[outByte] += ( (convStateList[convState].output ) & 1 ) << 1;
shreeshas95 0:f016e9e8d48b 158 output[outByte] += ( (convStateList[convState].output >> 2) & 1 );
shreeshas95 0:f016e9e8d48b 159 ++outByte;
shreeshas95 0:f016e9e8d48b 160 // printf("outByte @ end of switch = %u\n", outByte);
shreeshas95 0:f016e9e8d48b 161 break;
shreeshas95 0:f016e9e8d48b 162 }
shreeshas95 0:f016e9e8d48b 163 // next state transition
shreeshas95 0:f016e9e8d48b 164 convState = (convStateList[convState].nextState) & 0xF;
shreeshas95 0:f016e9e8d48b 165 }
shreeshas95 0:f016e9e8d48b 166 // printf("complete\n");
shreeshas95 0:f016e9e8d48b 167 }
shreeshas95 0:f016e9e8d48b 168
shreeshas95 0:f016e9e8d48b 169 };
shreeshas95 1:a0055b3280c8 170
shreeshas95 1:a0055b3280c8 171
shreeshas95 1:a0055b3280c8 172 // ******************************************** INTERLEAVE **************************************
shreeshas95 1:a0055b3280c8 173 void interleave( unsigned char *input, unsigned char *output ){
shreeshas95 1:a0055b3280c8 174
shreeshas95 1:a0055b3280c8 175 unsigned int outState = 0;
shreeshas95 1:a0055b3280c8 176 unsigned int outByte = 0;
shreeshas95 1:a0055b3280c8 177
shreeshas95 1:a0055b3280c8 178 for( unsigned int i = 0 ; i < 36 ; ++i ){
shreeshas95 1:a0055b3280c8 179 for(unsigned int j = 0 ; j < 30 ; ++j){
shreeshas95 1:a0055b3280c8 180 unsigned int x = j*36+i;
shreeshas95 1:a0055b3280c8 181 unsigned char tempBit = ((input[x >> 3]) >> (7-(x % 8))) & 1;
shreeshas95 1:a0055b3280c8 182 switch(outState){
shreeshas95 1:a0055b3280c8 183 case 0:
shreeshas95 1:a0055b3280c8 184 outState = 1;
shreeshas95 1:a0055b3280c8 185 output[outByte] = tempBit << 7;
shreeshas95 1:a0055b3280c8 186 break;
shreeshas95 1:a0055b3280c8 187 case 1:
shreeshas95 1:a0055b3280c8 188 outState = 2;
shreeshas95 1:a0055b3280c8 189 output[outByte] += tempBit << 6;
shreeshas95 1:a0055b3280c8 190 break;
shreeshas95 1:a0055b3280c8 191 case 2:
shreeshas95 1:a0055b3280c8 192 outState = 3;
shreeshas95 1:a0055b3280c8 193 output[outByte] += tempBit << 5;
shreeshas95 1:a0055b3280c8 194 break;
shreeshas95 1:a0055b3280c8 195 case 3:
shreeshas95 1:a0055b3280c8 196 outState = 4;
shreeshas95 1:a0055b3280c8 197 output[outByte] += tempBit << 4;
shreeshas95 1:a0055b3280c8 198 break;
shreeshas95 1:a0055b3280c8 199 case 4:
shreeshas95 1:a0055b3280c8 200 outState = 5;
shreeshas95 1:a0055b3280c8 201 output[outByte] += tempBit << 3;
shreeshas95 1:a0055b3280c8 202 break;
shreeshas95 1:a0055b3280c8 203 case 5:
shreeshas95 1:a0055b3280c8 204 outState = 6;
shreeshas95 1:a0055b3280c8 205 output[outByte] += tempBit << 2;
shreeshas95 1:a0055b3280c8 206 break;
shreeshas95 1:a0055b3280c8 207 case 6:
shreeshas95 1:a0055b3280c8 208 outState = 7;
shreeshas95 1:a0055b3280c8 209 output[outByte] += tempBit << 1;
shreeshas95 1:a0055b3280c8 210 break;
shreeshas95 1:a0055b3280c8 211 case 7:
shreeshas95 1:a0055b3280c8 212 outState = 0;
shreeshas95 1:a0055b3280c8 213 output[outByte] += tempBit;
shreeshas95 1:a0055b3280c8 214 ++outByte;
shreeshas95 1:a0055b3280c8 215 break;
shreeshas95 1:a0055b3280c8 216 }
shreeshas95 1:a0055b3280c8 217 }
shreeshas95 1:a0055b3280c8 218 for(unsigned int j = 0 ; j < 2 ; ++j){
shreeshas95 1:a0055b3280c8 219 switch(outState){
shreeshas95 1:a0055b3280c8 220 case 0:
shreeshas95 1:a0055b3280c8 221 output[outByte] = 0;
shreeshas95 1:a0055b3280c8 222 outState = 1;
shreeshas95 1:a0055b3280c8 223 break;
shreeshas95 1:a0055b3280c8 224 case 1:
shreeshas95 1:a0055b3280c8 225 outState = 2;
shreeshas95 1:a0055b3280c8 226 break;
shreeshas95 1:a0055b3280c8 227 case 2:
shreeshas95 1:a0055b3280c8 228 outState = 3;
shreeshas95 1:a0055b3280c8 229 break;
shreeshas95 1:a0055b3280c8 230 case 3:
shreeshas95 1:a0055b3280c8 231 outState = 4;
shreeshas95 1:a0055b3280c8 232 break;
shreeshas95 1:a0055b3280c8 233 case 4:
shreeshas95 1:a0055b3280c8 234 outState = 5;
shreeshas95 1:a0055b3280c8 235 break;
shreeshas95 1:a0055b3280c8 236 case 5:
shreeshas95 1:a0055b3280c8 237 outState = 6;
shreeshas95 1:a0055b3280c8 238 break;
shreeshas95 1:a0055b3280c8 239 case 6:
shreeshas95 1:a0055b3280c8 240 outState = 7;
shreeshas95 1:a0055b3280c8 241 break;
shreeshas95 1:a0055b3280c8 242 case 7:
shreeshas95 1:a0055b3280c8 243 outState = 0;
shreeshas95 1:a0055b3280c8 244 ++outByte;
shreeshas95 1:a0055b3280c8 245 break;
shreeshas95 1:a0055b3280c8 246 }
shreeshas95 1:a0055b3280c8 247 }
shreeshas95 1:a0055b3280c8 248 }
shreeshas95 1:a0055b3280c8 249 }