TELECOMMAND MANAGER V1
Dependencies: mbed SLCD mbed-rtos
SD_read.h@16:de2224dd9a0d, 2015-09-17 (annotated)
- Committer:
- shreeshas95
- Date:
- Thu Sep 17 13:54:08 2015 +0000
- Revision:
- 16:de2224dd9a0d
- Parent:
- 13:7b27a8e9cbb4
DUMMY program to demostrate the problems
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
shreeshas95 | 13:7b27a8e9cbb4 | 1 | // It takes 276us to read from sd card and write in 112 buffer |
shreeshas95 | 13:7b27a8e9cbb4 | 2 | |
shreeshas95 | 13:7b27a8e9cbb4 | 3 | //~ #include"SDcard.h" |
shreeshas95 | 13:7b27a8e9cbb4 | 4 | #define T_frames 39 |
shreeshas95 | 13:7b27a8e9cbb4 | 5 | unsigned char buffer_112_counter,sent_tm = 0; |
shreeshas95 | 13:7b27a8e9cbb4 | 6 | int disk_read(uint8_t *, uint64_t),j; |
shreeshas95 | 13:7b27a8e9cbb4 | 7 | bool new_session = true; |
shreeshas95 | 13:7b27a8e9cbb4 | 8 | bool last_buffer = false; |
shreeshas95 | 13:7b27a8e9cbb4 | 9 | bool first_block = true; |
shreeshas95 | 13:7b27a8e9cbb4 | 10 | bool last_block =false; |
shreeshas95 | 13:7b27a8e9cbb4 | 11 | bool repeat_T_frame = false; |
shreeshas95 | 13:7b27a8e9cbb4 | 12 | unsigned int counter_in_block=0,diff_prev=0; |
shreeshas95 | 13:7b27a8e9cbb4 | 13 | unsigned char EOS_counter = 0; |
shreeshas95 | 13:7b27a8e9cbb4 | 14 | unsigned char enable_T_frame = false; |
shreeshas95 | 13:7b27a8e9cbb4 | 15 | uint64_t start_block_num ; // Read from TC |
shreeshas95 | 13:7b27a8e9cbb4 | 16 | uint64_t end_block_num ; // Read from TC |
shreeshas95 | 13:7b27a8e9cbb4 | 17 | uint64_t Number_of_blocks_to_read ; |
shreeshas95 | 13:7b27a8e9cbb4 | 18 | uint64_t block_counter = 0; |
shreeshas95 | 13:7b27a8e9cbb4 | 19 | unsigned char buffer_512[512], buffer_112[112],counter_in_S_frame=0,counter_in_SCH=0; |
shreeshas95 | 13:7b27a8e9cbb4 | 20 | //unsigned char S_frame[48]={0x46,0x9D,0xFB,0xF0,0xD2,0xBA,0x89,0xE4,0x46,0x9D,0xFB,0xF0,0xD2,0xBA,0x89,0xE4,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; |
shreeshas95 | 13:7b27a8e9cbb4 | 21 | //unsigned char SCH[40] = {0x0A,0x3F,0x46,0xB4,0x00}; |
shreeshas95 | 13:7b27a8e9cbb4 | 22 | //unsigned char EoS[120]; |
shreeshas95 | 13:7b27a8e9cbb4 | 23 | unsigned char * S_frame , *EoS; |
shreeshas95 | 13:7b27a8e9cbb4 | 24 | unsigned char make_EOS_flag =true; |
shreeshas95 | 13:7b27a8e9cbb4 | 25 | |
shreeshas95 | 13:7b27a8e9cbb4 | 26 | void differential_encode(unsigned char* ptr, int length){ |
shreeshas95 | 13:7b27a8e9cbb4 | 27 | |
shreeshas95 | 13:7b27a8e9cbb4 | 28 | for(int i=0; i<length;i++){ |
shreeshas95 | 13:7b27a8e9cbb4 | 29 | |
shreeshas95 | 13:7b27a8e9cbb4 | 30 | unsigned char s = ptr[i] , t; |
shreeshas95 | 13:7b27a8e9cbb4 | 31 | t = s ^ (s >> 1); |
shreeshas95 | 13:7b27a8e9cbb4 | 32 | (diff_prev == 0) ? t=t^0x00 : t=t^0x80 ; |
shreeshas95 | 13:7b27a8e9cbb4 | 33 | diff_prev = int(s & 0x01); |
shreeshas95 | 13:7b27a8e9cbb4 | 34 | ptr[i] = t; |
shreeshas95 | 13:7b27a8e9cbb4 | 35 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 36 | |
shreeshas95 | 13:7b27a8e9cbb4 | 37 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 38 | |
shreeshas95 | 13:7b27a8e9cbb4 | 39 | void send_tm_from_SD_card(){ |
shreeshas95 | 13:7b27a8e9cbb4 | 40 | |
shreeshas95 | 13:7b27a8e9cbb4 | 41 | |
shreeshas95 | 13:7b27a8e9cbb4 | 42 | if(make_EOS_flag == true){ |
shreeshas95 | 13:7b27a8e9cbb4 | 43 | EoS = snd_tm.EoS; |
shreeshas95 | 13:7b27a8e9cbb4 | 44 | S_frame = snd_tm.S_frame; |
shreeshas95 | 13:7b27a8e9cbb4 | 45 | make_EOS_flag = false; |
shreeshas95 | 13:7b27a8e9cbb4 | 46 | Number_of_blocks_to_read = end_block_num - start_block_num +1; |
shreeshas95 | 13:7b27a8e9cbb4 | 47 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 48 | |
shreeshas95 | 13:7b27a8e9cbb4 | 49 | |
shreeshas95 | 13:7b27a8e9cbb4 | 50 | for(buffer_112_counter=0;buffer_112_counter<112;buffer_112_counter++){ |
shreeshas95 | 13:7b27a8e9cbb4 | 51 | |
shreeshas95 | 13:7b27a8e9cbb4 | 52 | |
shreeshas95 | 13:7b27a8e9cbb4 | 53 | if(new_session == true){ //check if it is beginnig of session |
shreeshas95 | 13:7b27a8e9cbb4 | 54 | |
shreeshas95 | 13:7b27a8e9cbb4 | 55 | buffer_112[buffer_112_counter]=S_frame[counter_in_S_frame++]; // sending S frame |
shreeshas95 | 13:7b27a8e9cbb4 | 56 | |
shreeshas95 | 13:7b27a8e9cbb4 | 57 | if(counter_in_S_frame==48){ |
shreeshas95 | 13:7b27a8e9cbb4 | 58 | // cout<<"new_session_over\n"; |
shreeshas95 | 13:7b27a8e9cbb4 | 59 | counter_in_S_frame=0; |
shreeshas95 | 13:7b27a8e9cbb4 | 60 | new_session = false; |
shreeshas95 | 13:7b27a8e9cbb4 | 61 | enable_T_frame = true; |
shreeshas95 | 13:7b27a8e9cbb4 | 62 | // enable_SCH = true; |
shreeshas95 | 13:7b27a8e9cbb4 | 63 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 64 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 65 | else if(enable_T_frame == true){ // To send t frames |
shreeshas95 | 13:7b27a8e9cbb4 | 66 | |
shreeshas95 | 13:7b27a8e9cbb4 | 67 | if(block_counter != Number_of_blocks_to_read){ |
shreeshas95 | 13:7b27a8e9cbb4 | 68 | |
shreeshas95 | 13:7b27a8e9cbb4 | 69 | if(first_block){ // Read first block |
shreeshas95 | 13:7b27a8e9cbb4 | 70 | // cout<<"brooooooo"<<start_block_num<<"yo"<<endl; |
shreeshas95 | 13:7b27a8e9cbb4 | 71 | SPI_mutex.lock(); |
shreeshas95 | 13:7b27a8e9cbb4 | 72 | disk_read(buffer_512,start_block_num ); |
shreeshas95 | 13:7b27a8e9cbb4 | 73 | SPI_mutex.unlock(); |
shreeshas95 | 13:7b27a8e9cbb4 | 74 | counter_in_block = 0; |
shreeshas95 | 13:7b27a8e9cbb4 | 75 | block_counter++; |
shreeshas95 | 13:7b27a8e9cbb4 | 76 | |
shreeshas95 | 13:7b27a8e9cbb4 | 77 | first_block = false; |
shreeshas95 | 13:7b27a8e9cbb4 | 78 | // cout<<"first block exit\n"; |
shreeshas95 | 13:7b27a8e9cbb4 | 79 | // cout<<Number_of_blocks_to_read; |
shreeshas95 | 13:7b27a8e9cbb4 | 80 | |
shreeshas95 | 13:7b27a8e9cbb4 | 81 | //printf("\n"); |
shreeshas95 | 13:7b27a8e9cbb4 | 82 | // for(int j=0;j<512;j++){ |
shreeshas95 | 13:7b27a8e9cbb4 | 83 | // printf("%02X ",buffer_512[j]); |
shreeshas95 | 13:7b27a8e9cbb4 | 84 | // } |
shreeshas95 | 13:7b27a8e9cbb4 | 85 | // printf("\n"); |
shreeshas95 | 13:7b27a8e9cbb4 | 86 | // if(block_counter == Number_of_blocks_to_read){ |
shreeshas95 | 13:7b27a8e9cbb4 | 87 | // last_block = true; |
shreeshas95 | 13:7b27a8e9cbb4 | 88 | // } |
shreeshas95 | 13:7b27a8e9cbb4 | 89 | |
shreeshas95 | 13:7b27a8e9cbb4 | 90 | |
shreeshas95 | 13:7b27a8e9cbb4 | 91 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 92 | if((counter_in_block == 318 )&&(sent_tm<38)){ // Read next block |
shreeshas95 | 13:7b27a8e9cbb4 | 93 | |
shreeshas95 | 13:7b27a8e9cbb4 | 94 | // cout<<"next block exit\n"; |
shreeshas95 | 13:7b27a8e9cbb4 | 95 | SPI_mutex.lock(); |
shreeshas95 | 13:7b27a8e9cbb4 | 96 | disk_read(buffer_512,start_block_num + block_counter ); |
shreeshas95 | 13:7b27a8e9cbb4 | 97 | SPI_mutex.unlock(); |
shreeshas95 | 13:7b27a8e9cbb4 | 98 | counter_in_block = 0; |
shreeshas95 | 13:7b27a8e9cbb4 | 99 | block_counter++; |
shreeshas95 | 13:7b27a8e9cbb4 | 100 | if(block_counter == Number_of_blocks_to_read){ |
shreeshas95 | 13:7b27a8e9cbb4 | 101 | last_block = true; |
shreeshas95 | 13:7b27a8e9cbb4 | 102 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 103 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 104 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 105 | |
shreeshas95 | 13:7b27a8e9cbb4 | 106 | if(!last_block){ |
shreeshas95 | 13:7b27a8e9cbb4 | 107 | |
shreeshas95 | 13:7b27a8e9cbb4 | 108 | // cout<<int(sent_tm)<<" "; |
shreeshas95 | 13:7b27a8e9cbb4 | 109 | if(sent_tm<38){ |
shreeshas95 | 13:7b27a8e9cbb4 | 110 | buffer_112[buffer_112_counter] = buffer_512[counter_in_block++]; // sending T frames |
shreeshas95 | 13:7b27a8e9cbb4 | 111 | // cout<<int (counter_in_block)<<" "; |
shreeshas95 | 13:7b27a8e9cbb4 | 112 | if(counter_in_block == 318){ |
shreeshas95 | 13:7b27a8e9cbb4 | 113 | |
shreeshas95 | 13:7b27a8e9cbb4 | 114 | sent_tm = sent_tm + 2; |
shreeshas95 | 13:7b27a8e9cbb4 | 115 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 116 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 117 | else if(sent_tm == (T_frames-1)){ |
shreeshas95 | 13:7b27a8e9cbb4 | 118 | buffer_112[buffer_112_counter] = buffer_512[(counter_in_block++ )-159]; |
shreeshas95 | 13:7b27a8e9cbb4 | 119 | if(counter_in_block == 318){ |
shreeshas95 | 13:7b27a8e9cbb4 | 120 | // cout<<"last block exit\n"; |
shreeshas95 | 13:7b27a8e9cbb4 | 121 | sent_tm = T_frames; |
shreeshas95 | 13:7b27a8e9cbb4 | 122 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 123 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 124 | else if(sent_tm == T_frames){ // Give eos and start new session |
shreeshas95 | 13:7b27a8e9cbb4 | 125 | buffer_112[buffer_112_counter]=EoS[EOS_counter++]; |
shreeshas95 | 13:7b27a8e9cbb4 | 126 | if(EOS_counter == 120){ |
shreeshas95 | 13:7b27a8e9cbb4 | 127 | enable_T_frame = false; |
shreeshas95 | 13:7b27a8e9cbb4 | 128 | new_session = true; |
shreeshas95 | 13:7b27a8e9cbb4 | 129 | EOS_counter =0; |
shreeshas95 | 13:7b27a8e9cbb4 | 130 | sent_tm=0; |
shreeshas95 | 13:7b27a8e9cbb4 | 131 | repeat_T_frame = false; |
shreeshas95 | 13:7b27a8e9cbb4 | 132 | // cout<<"eos exit\n"; |
shreeshas95 | 13:7b27a8e9cbb4 | 133 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 134 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 135 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 136 | if(last_block){ |
shreeshas95 | 13:7b27a8e9cbb4 | 137 | // cout<<"lb"; |
shreeshas95 | 13:7b27a8e9cbb4 | 138 | if(sent_tm == (T_frames-1) && (repeat_T_frame == false)){ |
shreeshas95 | 13:7b27a8e9cbb4 | 139 | buffer_112[buffer_112_counter] = buffer_512[(counter_in_block++ )-159]; |
shreeshas95 | 13:7b27a8e9cbb4 | 140 | if(counter_in_block == 318){ |
shreeshas95 | 13:7b27a8e9cbb4 | 141 | // cout<<"repeat block exit\n"; |
shreeshas95 | 13:7b27a8e9cbb4 | 142 | sent_tm = T_frames; |
shreeshas95 | 13:7b27a8e9cbb4 | 143 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 144 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 145 | if((sent_tm == T_frames) && (repeat_T_frame == false)){ // Give eos and start new session |
shreeshas95 | 13:7b27a8e9cbb4 | 146 | buffer_112[buffer_112_counter]=EoS[EOS_counter++]; |
shreeshas95 | 13:7b27a8e9cbb4 | 147 | if(EOS_counter == 120){ |
shreeshas95 | 13:7b27a8e9cbb4 | 148 | // cout<<"eos exit"; |
shreeshas95 | 13:7b27a8e9cbb4 | 149 | enable_T_frame = false; |
shreeshas95 | 13:7b27a8e9cbb4 | 150 | new_session = true; |
shreeshas95 | 13:7b27a8e9cbb4 | 151 | EOS_counter =0; |
shreeshas95 | 13:7b27a8e9cbb4 | 152 | sent_tm=0; |
shreeshas95 | 13:7b27a8e9cbb4 | 153 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 154 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 155 | else if((sent_tm < (T_frames-1)) && (repeat_T_frame == false)){ |
shreeshas95 | 13:7b27a8e9cbb4 | 156 | buffer_112[buffer_112_counter] = buffer_512[counter_in_block++]; // sending last two T frames |
shreeshas95 | 13:7b27a8e9cbb4 | 157 | if(counter_in_block == 318){ |
shreeshas95 | 13:7b27a8e9cbb4 | 158 | sent_tm = sent_tm + 2; |
shreeshas95 | 13:7b27a8e9cbb4 | 159 | repeat_T_frame= true; |
shreeshas95 | 13:7b27a8e9cbb4 | 160 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 161 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 162 | else if((sent_tm< T_frames) && (repeat_T_frame == true)){ |
shreeshas95 | 13:7b27a8e9cbb4 | 163 | buffer_112[buffer_112_counter] = buffer_512[(counter_in_block++ )-159]; |
shreeshas95 | 13:7b27a8e9cbb4 | 164 | if(counter_in_block == 477){ |
shreeshas95 | 13:7b27a8e9cbb4 | 165 | sent_tm = sent_tm +1; |
shreeshas95 | 13:7b27a8e9cbb4 | 166 | counter_in_block = counter_in_block-159; |
shreeshas95 | 13:7b27a8e9cbb4 | 167 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 168 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 169 | else if((sent_tm == T_frames ) && (repeat_T_frame == true)){ // Give eos and start new session |
shreeshas95 | 13:7b27a8e9cbb4 | 170 | |
shreeshas95 | 13:7b27a8e9cbb4 | 171 | buffer_112[buffer_112_counter]=EoS[EOS_counter++]; |
shreeshas95 | 13:7b27a8e9cbb4 | 172 | if(EOS_counter == 120){ |
shreeshas95 | 13:7b27a8e9cbb4 | 173 | enable_T_frame = false; |
shreeshas95 | 13:7b27a8e9cbb4 | 174 | new_session = true; |
shreeshas95 | 13:7b27a8e9cbb4 | 175 | EOS_counter =0; |
shreeshas95 | 13:7b27a8e9cbb4 | 176 | // printf("yoooo %d",int(sent_tm)); |
shreeshas95 | 13:7b27a8e9cbb4 | 177 | sent_tm=0; |
shreeshas95 | 13:7b27a8e9cbb4 | 178 | |
shreeshas95 | 13:7b27a8e9cbb4 | 179 | last_block = false; |
shreeshas95 | 13:7b27a8e9cbb4 | 180 | last_buffer = true; |
shreeshas95 | 13:7b27a8e9cbb4 | 181 | // printf("i m here"); |
shreeshas95 | 13:7b27a8e9cbb4 | 182 | break; |
shreeshas95 | 13:7b27a8e9cbb4 | 183 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 184 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 185 | |
shreeshas95 | 13:7b27a8e9cbb4 | 186 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 187 | |
shreeshas95 | 13:7b27a8e9cbb4 | 188 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 189 | |
shreeshas95 | 13:7b27a8e9cbb4 | 190 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 191 | differential_encode(buffer_112, 112); |
shreeshas95 | 13:7b27a8e9cbb4 | 192 | if(last_buffer ==true){ |
shreeshas95 | 13:7b27a8e9cbb4 | 193 | diff_prev=0; |
shreeshas95 | 13:7b27a8e9cbb4 | 194 | } |
shreeshas95 | 13:7b27a8e9cbb4 | 195 | |
shreeshas95 | 13:7b27a8e9cbb4 | 196 | } |