nikita teggi / Mbed 2 deprecated merged_code2_3rd_nov_2017

Changes done in ECG and BT

Dependencies:   SDFileSystem ds3231 eeprom_Nikita mbed testUniGraphic_150217

Fork of merged_code2_20sept_2017_4th_oct_2017 by nikita teggi

bt.cpp@52:7d9ff7781bdc, 2017-09-20 (annotated)

Committer:
nikitateggi
Date:
Wed Sep 20 10:33:17 2017 +0000
Revision:
52:7d9ff7781bdc
Parent:
48:f90edb35a20e
Child:
54:f2a413d5dffd
Modified the bluetooth part. checking both ack and checksum and all the data are visible on the app.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nikitateggi 19:1650bbc923cc 1 #include "mbed.h"
nikitateggi 19:1650bbc923cc 2 #include "sdcard.h"
nikitateggi 19:1650bbc923cc 3 #include "struct.h"
nikitateggi 44:05dbea558c9a 4 #include "eeprom_pgm.h"
nikitateggi 44:05dbea558c9a 5 #include "main.h"
nikitateggi 52:7d9ff7781bdc 6
nikitateggi 45:067673dae242 7 #define ACK 0x00 /// changed //16/06 #define all the values removing structure
nikitateggi 45:067673dae242 8 #define START_OF_FILE 0x01
nikitateggi 45:067673dae242 9 #define END_OF_FILE 0x02
nikitateggi 45:067673dae242 10 #define DATA_TRFR 0x03
nikitateggi 45:067673dae242 11 #define NACK 0xFF
nikitateggi 45:067673dae242 12 #define SOS 0xc0
nikitateggi 45:067673dae242 13 #define EOS 0xc0
nikitateggi 45:067673dae242 14 #define NO_OF_SAMPLES 600 //changed the buffer size from 150- 22/7/17- suhasini
nikitateggi 45:067673dae242 15 #define CHKSUM 0x80
nikitateggi 45:067673dae242 16 #define STRUCTURE_LENGTH 26
nikitateggi 52:7d9ff7781bdc 17
nikitateggi 22:ffa88619551d 18 BLEMsg_info *bt_file;
nikitateggi 22:ffa88619551d 19 Point *myBleMsg;
nikitateggi 52:7d9ff7781bdc 20
nikitateggi 27:907f8ce0025e 21 Serial mc(USBTX,USBRX); // serial terminal
nikitateggi 27:907f8ce0025e 22 Serial blue(PTC4,PTC3); // communicating bluetooth through serial
nikitateggi 27:907f8ce0025e 23
nikitateggi 28:65f2d80b7eb7 24 static uint32_t total_samples=0; // variable to hold total number of samples
nikitateggi 19:1650bbc923cc 25 Point b; // structure copy
nikitateggi 19:1650bbc923cc 26 BLEMsg_info bt_file1; // structure copy
nikitateggi 28:65f2d80b7eb7 27 static uint32_t total_file_size=0; // to determine the size of the file
nikitateggi 44:05dbea558c9a 28 static uint32_t total_file_size_sent=0;
nikitateggi 28:65f2d80b7eb7 29 static uint32_t file_start=0; // variable for 'for loop'
nikitateggi 44:05dbea558c9a 30 //static uint32_t j=0;
nikitateggi 27:907f8ce0025e 31 uint8_t count_send=0;
nikitateggi 28:65f2d80b7eb7 32 static uint32_t file_pointer_position=0;
nikitateggi 28:65f2d80b7eb7 33 static uint32_t counter=0;
nikitateggi 44:05dbea558c9a 34 static uint32_t v1[NO_OF_SAMPLES];
nikitateggi 27:907f8ce0025e 35 uint8_t file=0;
nikitateggi 52:7d9ff7781bdc 36
nikitateggi 52:7d9ff7781bdc 37
nikitateggi 19:1650bbc923cc 38 uint8_t bt_send(uint8_t state_tx)
nikitateggi 19:1650bbc923cc 39 {
nikitateggi 32:76892fdf5e4c 40
nikitateggi 44:05dbea558c9a 41 blue.baud(115200); // baud rate of bluetooth
nikitateggi 44:05dbea558c9a 42 bt_file=&bt_file1;
nikitateggi 44:05dbea558c9a 43 myBleMsg=&b;
nikitateggi 44:05dbea558c9a 44 int8_t check_sum=0;
nikitateggi 44:05dbea558c9a 45 uint8_t state_rx =0;
nikitateggi 27:907f8ce0025e 46
nikitateggi 45:067673dae242 47 switch(state_tx)
nikitateggi 19:1650bbc923cc 48 {
nikitateggi 19:1650bbc923cc 49
nikitateggi 27:907f8ce0025e 50 case 1:
nikitateggi 44:05dbea558c9a 51 state_tx =0;
nikitateggi 27:907f8ce0025e 52 counter=0;
nikitateggi 44:05dbea558c9a 53 total_file_size_sent=0;
nikitateggi 45:067673dae242 54 file_start=0;
nikitateggi 45:067673dae242 55 count_send=0; total_samples=0;
nikitateggi 27:907f8ce0025e 56 file_pointer_position=0;
nikitateggi 48:f90edb35a20e 57 mc.printf("bt_pid = %d\n",get_btpid());
nikitateggi 45:067673dae242 58 if(get_filepid()>get_btpid()) //check for pid and bluetooth pid by reading from file
nikitateggi 44:05dbea558c9a 59 {
nikitateggi 44:05dbea558c9a 60 send_initial_string();
nikitateggi 44:05dbea558c9a 61 blue.printf("\n");
nikitateggi 48:f90edb35a20e 62 file=sd_open_read(get_btpid()); // open the file for reading
nikitateggi 48:f90edb35a20e 63 total_file_size=file_size(); // determined the file size
nikitateggi 47:3716dd41dba6 64 state_rx = 1;
nikitateggi 44:05dbea558c9a 65 }
nikitateggi 44:05dbea558c9a 66
nikitateggi 44:05dbea558c9a 67 else
nikitateggi 44:05dbea558c9a 68 {
nikitateggi 45:067673dae242 69 state_rx =0; //no files to send
nikitateggi 44:05dbea558c9a 70 mc.printf("no file to send\n");
nikitateggi 44:05dbea558c9a 71 }
nikitateggi 44:05dbea558c9a 72 break;
nikitateggi 44:05dbea558c9a 73
nikitateggi 19:1650bbc923cc 74
nikitateggi 44:05dbea558c9a 75 case 2: total_samples=0;
nikitateggi 47:3716dd41dba6 76 //file=sd_open_read(get_btpid());
nikitateggi 48:f90edb35a20e 77 // total_file_size=file_size() ; // determined the file size
nikitateggi 45:067673dae242 78 sd_read1(bt_file1); // read the sd card file
avp2417 36:00d96aa14658 79 mc.printf("sd file opened to read data in it\n");
nikitateggi 45:067673dae242 80 myBleMsg->bt_msg=bt_file1; //copy the contents to the structure
nikitateggi 45:067673dae242 81 send_structure(); // send the structure string
avp2417 36:00d96aa14658 82 blue.printf("\n");
avp2417 36:00d96aa14658 83 mc.printf("sent initial string\n");
nikitateggi 27:907f8ce0025e 84 total_samples= myBleMsg->bt_msg.num_samples.num_sample_ppg_dummy+myBleMsg->bt_msg.num_samples.num_sample_ecg_OTtyp;
nikitateggi 19:1650bbc923cc 85 state_tx =0;
nikitateggi 19:1650bbc923cc 86 state_rx =2;
nikitateggi 27:907f8ce0025e 87 count_send=0;
nikitateggi 44:05dbea558c9a 88 total_file_size_sent=file_size1();
nikitateggi 19:1650bbc923cc 89 break;
nikitateggi 19:1650bbc923cc 90
nikitateggi 19:1650bbc923cc 91
nikitateggi 44:05dbea558c9a 92 case 3:
nikitateggi 44:05dbea558c9a 93 counter=0;
nikitateggi 44:05dbea558c9a 94 if(count_send<(total_samples/NO_OF_SAMPLES))
nikitateggi 44:05dbea558c9a 95 {
nikitateggi 44:05dbea558c9a 96 sd_read(v1,NO_OF_SAMPLES);
nikitateggi 44:05dbea558c9a 97 counter=NO_OF_SAMPLES; //read 1500 samples
nikitateggi 44:05dbea558c9a 98 send_data_str1();
nikitateggi 44:05dbea558c9a 99 for(file_start=0;file_start<(NO_OF_SAMPLES);file_start++)
nikitateggi 44:05dbea558c9a 100 {
nikitateggi 19:1650bbc923cc 101
nikitateggi 44:05dbea558c9a 102 blue.printf("%08x", v1[file_start]);
nikitateggi 27:907f8ce0025e 103
nikitateggi 44:05dbea558c9a 104 }
avp2417 36:00d96aa14658 105
nikitateggi 44:05dbea558c9a 106 check_sum=checksum_rawdata((uint8_t *)v1,counter); // calculating checksum // calculating checksum
nikitateggi 44:05dbea558c9a 107 state_tx =0;
nikitateggi 44:05dbea558c9a 108 state_rx =3;
nikitateggi 44:05dbea558c9a 109 send_data_str2(check_sum); // send the remaining part of the string
nikitateggi 19:1650bbc923cc 110
nikitateggi 44:05dbea558c9a 111 }
nikitateggi 19:1650bbc923cc 112
nikitateggi 44:05dbea558c9a 113 else
nikitateggi 44:05dbea558c9a 114 {
nikitateggi 44:05dbea558c9a 115 for(uint16_t l=0;l<NO_OF_SAMPLES;l++)
nikitateggi 44:05dbea558c9a 116 {
nikitateggi 44:05dbea558c9a 117 v1[l]=NULL;
nikitateggi 44:05dbea558c9a 118 }
nikitateggi 44:05dbea558c9a 119 counter=(total_samples-( NO_OF_SAMPLES*count_send));
nikitateggi 27:907f8ce0025e 120 send_data_str1();
nikitateggi 44:05dbea558c9a 121 sd_read(v1,(total_samples-( NO_OF_SAMPLES*count_send)));
nikitateggi 44:05dbea558c9a 122
nikitateggi 44:05dbea558c9a 123 for(file_start=0;file_start<(total_samples-( NO_OF_SAMPLES*count_send));file_start++)
nikitateggi 19:1650bbc923cc 124 {
nikitateggi 24:d992ee8369f4 125 blue.printf("%08x", v1[file_start]);
nikitateggi 27:907f8ce0025e 126
nikitateggi 19:1650bbc923cc 127 }
nikitateggi 27:907f8ce0025e 128
nikitateggi 19:1650bbc923cc 129 state_tx=0;
nikitateggi 19:1650bbc923cc 130 state_rx=4;
nikitateggi 44:05dbea558c9a 131 check_sum=checksum_rawdata((uint8_t *)v1,counter); // calculating checksum
nikitateggi 22:ffa88619551d 132 send_data_str2(check_sum);
nikitateggi 19:1650bbc923cc 133 }
nikitateggi 19:1650bbc923cc 134
nikitateggi 45:067673dae242 135 total_file_size_sent=file_size1();
nikitateggi 27:907f8ce0025e 136 blue.printf("\n");
nikitateggi 27:907f8ce0025e 137 break;
nikitateggi 19:1650bbc923cc 138
nikitateggi 19:1650bbc923cc 139
nikitateggi 48:f90edb35a20e 140 case 4: // total_file_size_sent=file_size1();
nikitateggi 44:05dbea558c9a 141 if(total_file_size_sent==total_file_size) // if the total file size is same as total file size
nikitateggi 27:907f8ce0025e 142 { // then there is no more data to send in that particular file
nikitateggi 19:1650bbc923cc 143
nikitateggi 44:05dbea558c9a 144 state_rx=5;
nikitateggi 44:05dbea558c9a 145 send_last_string();
nikitateggi 24:d992ee8369f4 146 blue.printf("\n");
nikitateggi 44:05dbea558c9a 147
nikitateggi 19:1650bbc923cc 148 }
nikitateggi 19:1650bbc923cc 149 else
nikitateggi 19:1650bbc923cc 150 {
nikitateggi 44:05dbea558c9a 151
nikitateggi 44:05dbea558c9a 152 total_samples=0;
nikitateggi 44:05dbea558c9a 153 sd_read1(bt_file1); // read the sd card file
nikitateggi 46:162ed3f051b2 154 // mc.printf("sd file opened to read data in it\n");
nikitateggi 44:05dbea558c9a 155 myBleMsg->bt_msg=bt_file1; //copy the contents to the structure
nikitateggi 44:05dbea558c9a 156 send_structure(); // send the initial string
nikitateggi 44:05dbea558c9a 157 blue.printf("\n");
nikitateggi 46:162ed3f051b2 158 // mc.printf("sent initial string\n");
nikitateggi 44:05dbea558c9a 159 total_samples= myBleMsg->bt_msg.num_samples.num_sample_ppg_dummy+myBleMsg->bt_msg.num_samples.num_sample_ecg_OTtyp;
nikitateggi 44:05dbea558c9a 160 state_tx =0;
nikitateggi 44:05dbea558c9a 161 state_rx =2;
nikitateggi 44:05dbea558c9a 162 count_send=0;
nikitateggi 44:05dbea558c9a 163 total_file_size_sent=file_size1();
nikitateggi 44:05dbea558c9a 164
nikitateggi 19:1650bbc923cc 165 }
nikitateggi 19:1650bbc923cc 166
nikitateggi 19:1650bbc923cc 167
nikitateggi 52:7d9ff7781bdc 168
nikitateggi 52:7d9ff7781bdc 169
nikitateggi 19:1650bbc923cc 170 }
nikitateggi 52:7d9ff7781bdc 171
nikitateggi 19:1650bbc923cc 172 return state_rx;
nikitateggi 19:1650bbc923cc 173
nikitateggi 19:1650bbc923cc 174 }
nikitateggi 19:1650bbc923cc 175
nikitateggi 19:1650bbc923cc 176
nikitateggi 19:1650bbc923cc 177
nikitateggi 19:1650bbc923cc 178
nikitateggi 19:1650bbc923cc 179 uint8_t bt_receive (uint8_t state_rx)
nikitateggi 19:1650bbc923cc 180 {
nikitateggi 19:1650bbc923cc 181
nikitateggi 52:7d9ff7781bdc 182 unsigned char state_tx =1; //state for transmitting
nikitateggi 52:7d9ff7781bdc 183 uint8_t string_length_rx=0;
nikitateggi 52:7d9ff7781bdc 184 char ack_rx[2]; // varibale to receive ack from the bluetooth
nikitateggi 52:7d9ff7781bdc 185 char chksum_rx[3];
nikitateggi 52:7d9ff7781bdc 186 char btdata_received[17];
nikitateggi 52:7d9ff7781bdc 187
nikitateggi 44:05dbea558c9a 188
nikitateggi 52:7d9ff7781bdc 189 while (blue.readable()!= NULL) // reading string from bluetooth app
nikitateggi 52:7d9ff7781bdc 190 {
nikitateggi 52:7d9ff7781bdc 191 blue.scanf("%17s", btdata_received);
nikitateggi 52:7d9ff7781bdc 192 mc.printf("%s\r\n", btdata_received);
nikitateggi 52:7d9ff7781bdc 193
nikitateggi 52:7d9ff7781bdc 194 }
nikitateggi 52:7d9ff7781bdc 195
nikitateggi 52:7d9ff7781bdc 196 string_length_rx = strlen(btdata_received); // storing the length of the string received
nikitateggi 52:7d9ff7781bdc 197 memcpy(ack_rx, btdata_received+1, 2); // reading the ack received
nikitateggi 52:7d9ff7781bdc 198 memcpy(chksum_rx, btdata_received+(string_length_rx-2), 3); // reading the checksum received
nikitateggi 52:7d9ff7781bdc 199 mc.printf("%s\r\n",ack_rx);
nikitateggi 52:7d9ff7781bdc 200 mc.printf("%s\r\n",chksum_rx);
nikitateggi 44:05dbea558c9a 201
nikitateggi 19:1650bbc923cc 202 switch(state_rx)
nikitateggi 19:1650bbc923cc 203 {
nikitateggi 19:1650bbc923cc 204
nikitateggi 52:7d9ff7781bdc 205 case 1: // wait for the ack
nikitateggi 22:ffa88619551d 206 state_rx=0;
nikitateggi 19:1650bbc923cc 207 myBleMsg->proto=ACK;
nikitateggi 52:7d9ff7781bdc 208 if ((strcmp(ack_rx ,"00") == NULL ) && (strcmp(chksum_rx ,"80" ) == NULL)) // check for ack and checksum
nikitateggi 44:05dbea558c9a 209
nikitateggi 19:1650bbc923cc 210 {
nikitateggi 19:1650bbc923cc 211
nikitateggi 19:1650bbc923cc 212 state_tx=2;
nikitateggi 19:1650bbc923cc 213 }
nikitateggi 19:1650bbc923cc 214
nikitateggi 22:ffa88619551d 215 else
nikitateggi 19:1650bbc923cc 216
nikitateggi 19:1650bbc923cc 217 {
nikitateggi 19:1650bbc923cc 218
nikitateggi 19:1650bbc923cc 219 state_tx=1;
nikitateggi 48:f90edb35a20e 220 sd_close();
nikitateggi 19:1650bbc923cc 221 }
nikitateggi 19:1650bbc923cc 222 break;
nikitateggi 19:1650bbc923cc 223
nikitateggi 19:1650bbc923cc 224 case 2: state_rx =0; //wait for the ack
nikitateggi 44:05dbea558c9a 225
nikitateggi 52:7d9ff7781bdc 226 if ((strcmp(ack_rx ,"00") == NULL ) && (strcmp(chksum_rx ,"80" ) == NULL))
nikitateggi 19:1650bbc923cc 227 {
nikitateggi 19:1650bbc923cc 228
nikitateggi 19:1650bbc923cc 229 state_tx=3;
nikitateggi 44:05dbea558c9a 230 file_pointer_position=total_file_size_sent;
nikitateggi 19:1650bbc923cc 231 }
nikitateggi 19:1650bbc923cc 232
nikitateggi 19:1650bbc923cc 233 else
nikitateggi 19:1650bbc923cc 234
nikitateggi 19:1650bbc923cc 235 {
nikitateggi 19:1650bbc923cc 236
nikitateggi 19:1650bbc923cc 237 state_tx=2;
nikitateggi 22:ffa88619551d 238 setpos1(file_pointer_position);
nikitateggi 47:3716dd41dba6 239 //sd_close(); //file closed which was opened earlier because it opens again in bt_send case 1
nikitateggi 27:907f8ce0025e 240
nikitateggi 19:1650bbc923cc 241 }
nikitateggi 27:907f8ce0025e 242 //blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx);
nikitateggi 19:1650bbc923cc 243 break;
nikitateggi 52:7d9ff7781bdc 244
nikitateggi 19:1650bbc923cc 245
nikitateggi 19:1650bbc923cc 246 case 3:
nikitateggi 19:1650bbc923cc 247 state_rx =0;
nikitateggi 52:7d9ff7781bdc 248 if ((strcmp(ack_rx ,"00") == NULL ) && (strcmp(chksum_rx ,"80" ) == NULL))
nikitateggi 19:1650bbc923cc 249 {
nikitateggi 19:1650bbc923cc 250
nikitateggi 45:067673dae242 251 state_tx=3;
nikitateggi 27:907f8ce0025e 252 count_send=count_send+1;
nikitateggi 45:067673dae242 253 file_pointer_position=total_file_size_sent;
nikitateggi 19:1650bbc923cc 254 }
nikitateggi 19:1650bbc923cc 255
nikitateggi 19:1650bbc923cc 256 else
nikitateggi 19:1650bbc923cc 257
nikitateggi 19:1650bbc923cc 258 {
nikitateggi 27:907f8ce0025e 259
nikitateggi 19:1650bbc923cc 260 state_tx=3;
nikitateggi 44:05dbea558c9a 261 file_start=file_start- NO_OF_SAMPLES;
nikitateggi 44:05dbea558c9a 262 setpos1(file_pointer_position);
nikitateggi 44:05dbea558c9a 263 }
nikitateggi 44:05dbea558c9a 264
nikitateggi 44:05dbea558c9a 265 break;
nikitateggi 44:05dbea558c9a 266
nikitateggi 44:05dbea558c9a 267 case 4:
nikitateggi 44:05dbea558c9a 268 state_rx =0;
nikitateggi 52:7d9ff7781bdc 269 if ((strcmp(ack_rx ,"00") == NULL ) && (strcmp(chksum_rx ,"80" ) == NULL))
nikitateggi 44:05dbea558c9a 270 {
nikitateggi 45:067673dae242 271 state_tx=4;
nikitateggi 44:05dbea558c9a 272 count_send=count_send+1;
nikitateggi 45:067673dae242 273 file_pointer_position=total_file_size_sent;
nikitateggi 44:05dbea558c9a 274 }
nikitateggi 44:05dbea558c9a 275
nikitateggi 44:05dbea558c9a 276 else
nikitateggi 44:05dbea558c9a 277
nikitateggi 44:05dbea558c9a 278 {
nikitateggi 44:05dbea558c9a 279
nikitateggi 44:05dbea558c9a 280 state_tx=3;
nikitateggi 44:05dbea558c9a 281 file_start=file_start- NO_OF_SAMPLES;
nikitateggi 19:1650bbc923cc 282 setpos1(file_pointer_position);
nikitateggi 19:1650bbc923cc 283 }
nikitateggi 19:1650bbc923cc 284 break;
nikitateggi 19:1650bbc923cc 285
nikitateggi 52:7d9ff7781bdc 286
nikitateggi 44:05dbea558c9a 287 case 5: state_rx = 0;
nikitateggi 52:7d9ff7781bdc 288 if ((strcmp(ack_rx ,"00") == NULL ) && (strcmp(chksum_rx ,"80" ) == NULL))
nikitateggi 44:05dbea558c9a 289 {
nikitateggi 44:05dbea558c9a 290 sd_close();
nikitateggi 45:067673dae242 291 increment_btpid(); // increment the bluetooth pid and write in the file
nikitateggi 47:3716dd41dba6 292 mc.printf("next file");
nikitateggi 47:3716dd41dba6 293 mc.printf("bt_pid = %d\n",get_btpid());
nikitateggi 44:05dbea558c9a 294 state_tx=1;
nikitateggi 44:05dbea558c9a 295
nikitateggi 44:05dbea558c9a 296 }
nikitateggi 27:907f8ce0025e 297
nikitateggi 44:05dbea558c9a 298 else
nikitateggi 44:05dbea558c9a 299 {
nikitateggi 44:05dbea558c9a 300 state_tx = 4;
nikitateggi 27:907f8ce0025e 301
nikitateggi 44:05dbea558c9a 302 }
nikitateggi 44:05dbea558c9a 303 break;
nikitateggi 52:7d9ff7781bdc 304
nikitateggi 19:1650bbc923cc 305 }
nikitateggi 52:7d9ff7781bdc 306
nikitateggi 19:1650bbc923cc 307 return state_tx;
nikitateggi 19:1650bbc923cc 308 }
nikitateggi 19:1650bbc923cc 309
nikitateggi 19:1650bbc923cc 310
nikitateggi 19:1650bbc923cc 311
nikitateggi 19:1650bbc923cc 312
nikitateggi 19:1650bbc923cc 313
nikitateggi 19:1650bbc923cc 314
nikitateggi 19:1650bbc923cc 315
nikitateggi 44:05dbea558c9a 316 void send_structure() // function to send the structure to bluetooth
nikitateggi 19:1650bbc923cc 317 {
nikitateggi 45:067673dae242 318 myBleMsg->start_of_string=SOS;
nikitateggi 45:067673dae242 319 myBleMsg->length_file = STRUCTURE_LENGTH;
nikitateggi 45:067673dae242 320 myBleMsg->proto=DATA_TRFR; // data transfer mode
nikitateggi 45:067673dae242 321 blue.printf("%02x",myBleMsg->start_of_string);
nikitateggi 45:067673dae242 322 blue.printf("%02x",myBleMsg->proto);
nikitateggi 45:067673dae242 323 blue.printf("%08x",myBleMsg->length_file); //changed the sequence
nikitateggi 45:067673dae242 324 blue.printf("%08x",myBleMsg->bt_msg.length);
nikitateggi 45:067673dae242 325 blue.printf("%02x",myBleMsg->bt_msg.device_id);
nikitateggi 45:067673dae242 326 blue.printf("%08x",myBleMsg->bt_msg.patient_id);
nikitateggi 45:067673dae242 327 blue.printf("%02x",myBleMsg->bt_msg.date_time.date);
nikitateggi 45:067673dae242 328 blue.printf("%02x",myBleMsg->bt_msg.date_time.month);
nikitateggi 45:067673dae242 329 blue.printf("%02x",myBleMsg->bt_msg.date_time.year);
nikitateggi 45:067673dae242 330 blue.printf("%02x",myBleMsg->bt_msg.date_time.hour);
nikitateggi 45:067673dae242 331 blue.printf("%02x",myBleMsg->bt_msg.date_time.mins);
nikitateggi 45:067673dae242 332 blue.printf("%02x",myBleMsg->bt_msg.date_time.sec);
nikitateggi 45:067673dae242 333 blue.printf("%02x",myBleMsg->bt_msg.test_type);
nikitateggi 45:067673dae242 334 blue.printf("%04x",myBleMsg->bt_msg.sampling_freq);
nikitateggi 45:067673dae242 335 blue.printf("%04x",myBleMsg->bt_msg.num_samples. num_sample_ppg_dummy);
nikitateggi 45:067673dae242 336 blue.printf("%04x",myBleMsg->bt_msg.num_samples.num_sample_ecg_OTtyp);
nikitateggi 45:067673dae242 337 blue.printf("%04x",myBleMsg->bt_msg.cal_data.cal_sbp_dummy);
nikitateggi 45:067673dae242 338 blue.printf("%04x",myBleMsg->bt_msg.cal_data.cal_dbp_OTtyp);
nikitateggi 45:067673dae242 339 myBleMsg->end_of_string=EOS;
nikitateggi 45:067673dae242 340 myBleMsg->chk_sum = checksum_struct((uint8_t *)myBleMsg, sizeof(Point));
nikitateggi 45:067673dae242 341 blue.printf("%02x",myBleMsg->end_of_string);
nikitateggi 45:067673dae242 342 blue.printf("%02x",myBleMsg->chk_sum);
nikitateggi 44:05dbea558c9a 343
nikitateggi 19:1650bbc923cc 344
nikitateggi 19:1650bbc923cc 345 }
nikitateggi 19:1650bbc923cc 346
nikitateggi 44:05dbea558c9a 347 void send_initial_string() // function to send the initial string at the start f communication to bluetooth
nikitateggi 22:ffa88619551d 348 {
nikitateggi 52:7d9ff7781bdc 349
nikitateggi 45:067673dae242 350 uint8_t sum_init=0 ;
nikitateggi 45:067673dae242 351 myBleMsg->start_of_string=SOS;
nikitateggi 45:067673dae242 352 myBleMsg->length_file=0;
nikitateggi 45:067673dae242 353 myBleMsg->proto=START_OF_FILE;
nikitateggi 45:067673dae242 354 sum_init=checksum_init();
nikitateggi 45:067673dae242 355 myBleMsg->chk_sum=sum_init;
nikitateggi 45:067673dae242 356 blue.printf("%02x",myBleMsg->start_of_string);
nikitateggi 45:067673dae242 357 blue.printf("%02x",myBleMsg->proto);
nikitateggi 45:067673dae242 358 blue.printf("%08x",myBleMsg->length_file); // chnged
nikitateggi 45:067673dae242 359 myBleMsg->end_of_string=EOS;
nikitateggi 45:067673dae242 360 blue.printf("%02x",myBleMsg->end_of_string);
nikitateggi 45:067673dae242 361 blue.printf("%02x",myBleMsg->chk_sum);
nikitateggi 19:1650bbc923cc 362
nikitateggi 19:1650bbc923cc 363 }
nikitateggi 22:ffa88619551d 364
nikitateggi 22:ffa88619551d 365
nikitateggi 27:907f8ce0025e 366 uint8_t checksum_init() // function to calculate the checksum for the initial string
nikitateggi 22:ffa88619551d 367 {
nikitateggi 22:ffa88619551d 368
nikitateggi 45:067673dae242 369 uint32_t sum = 0;
nikitateggi 45:067673dae242 370 uint8_t chksum_init = 0;
nikitateggi 44:05dbea558c9a 371 sum=SOS+EOS+START_OF_FILE;
nikitateggi 45:067673dae242 372 chksum_init = sum & 0x000000FF;
nikitateggi 22:ffa88619551d 373 return chksum_init;
nikitateggi 22:ffa88619551d 374 }
nikitateggi 52:7d9ff7781bdc 375
nikitateggi 27:907f8ce0025e 376 uint8_t checksum_last() // function to calculate the checksum for the last string
nikitateggi 22:ffa88619551d 377 {
nikitateggi 22:ffa88619551d 378
nikitateggi 45:067673dae242 379 uint32_t sum = 0;
nikitateggi 45:067673dae242 380 uint8_t chksum_last = 0;
nikitateggi 44:05dbea558c9a 381 sum=SOS+EOS+END_OF_FILE; // changed //16/06 #define all the values removing structure
nikitateggi 22:ffa88619551d 382 chksum_last=sum & 0x000000FF;
nikitateggi 22:ffa88619551d 383 return chksum_last;
nikitateggi 22:ffa88619551d 384 }
nikitateggi 22:ffa88619551d 385
nikitateggi 45:067673dae242 386 void send_last_string() // function to send the last string to the bluetooth // which determines the end of file
nikitateggi 22:ffa88619551d 387 {
nikitateggi 45:067673dae242 388 uint8_t sum_last=0;
nikitateggi 45:067673dae242 389 myBleMsg->start_of_string = SOS;
nikitateggi 45:067673dae242 390 myBleMsg->length_file = 0;
nikitateggi 45:067673dae242 391 myBleMsg->proto=END_OF_FILE;
nikitateggi 45:067673dae242 392 sum_last=checksum_last();
nikitateggi 45:067673dae242 393 myBleMsg->chk_sum=sum_last;
nikitateggi 45:067673dae242 394 blue.printf("%02x",myBleMsg->start_of_string);
nikitateggi 45:067673dae242 395 blue.printf("%02x",myBleMsg->proto);
nikitateggi 45:067673dae242 396 blue.printf("%08x",myBleMsg->length_file); // chnged
nikitateggi 45:067673dae242 397 myBleMsg->end_of_string=EOS;
nikitateggi 45:067673dae242 398 blue.printf("%02x",myBleMsg->end_of_string);
nikitateggi 45:067673dae242 399 blue.printf("%02x",myBleMsg->chk_sum);
nikitateggi 45:067673dae242 400
nikitateggi 45:067673dae242 401 }
nikitateggi 22:ffa88619551d 402
nikitateggi 45:067673dae242 403 void send_data_str1() // function to send a part of the structure // after this raw data is sent//
nikitateggi 45:067673dae242 404 {
nikitateggi 45:067673dae242 405 myBleMsg->start_of_string=SOS;
nikitateggi 45:067673dae242 406 myBleMsg->length_file=(counter*4);
nikitateggi 45:067673dae242 407 myBleMsg->proto=DATA_TRFR;
nikitateggi 45:067673dae242 408 blue.printf("%02x",myBleMsg->start_of_string);
nikitateggi 45:067673dae242 409 blue.printf("%02x",myBleMsg->proto); // chnaged
nikitateggi 45:067673dae242 410 blue.printf("%08x",myBleMsg->length_file);
nikitateggi 52:7d9ff7781bdc 411
nikitateggi 45:067673dae242 412 }
nikitateggi 19:1650bbc923cc 413
nikitateggi 19:1650bbc923cc 414
nikitateggi 19:1650bbc923cc 415
nikitateggi 45:067673dae242 416 void send_data_str2(uint8_t check_sum) // after raw data// this last part of structure is sent
nikitateggi 45:067673dae242 417 {
nikitateggi 45:067673dae242 418 myBleMsg->chk_sum=check_sum;
nikitateggi 45:067673dae242 419 myBleMsg->end_of_string=EOS;
nikitateggi 45:067673dae242 420 blue.printf("%02x",myBleMsg->end_of_string);
nikitateggi 45:067673dae242 421 blue.printf("%02x",myBleMsg->chk_sum);
nikitateggi 45:067673dae242 422
nikitateggi 45:067673dae242 423 }
nikitateggi 19:1650bbc923cc 424
nikitateggi 52:7d9ff7781bdc 425
nikitateggi 31:0f67acfc6236 426 uint8_t checksum_struct(const uint8_t data[], uint16_t numBytes) // calculating checksum for
nikitateggi 31:0f67acfc6236 427 {
nikitateggi 31:0f67acfc6236 428 uint32_t chksum_struct = 0;
nikitateggi 31:0f67acfc6236 429 uint16_t index = 0;
nikitateggi 31:0f67acfc6236 430
nikitateggi 31:0f67acfc6236 431 for (index=0U; index < (numBytes-1); index++)
nikitateggi 31:0f67acfc6236 432 {
nikitateggi 31:0f67acfc6236 433 chksum_struct += data[index];
nikitateggi 31:0f67acfc6236 434 //blue.printf("data=%02x\n",data[index]);
nikitateggi 31:0f67acfc6236 435
nikitateggi 31:0f67acfc6236 436 }
nikitateggi 31:0f67acfc6236 437 // blue.printf("%08x\n",chksum_struct);
nikitateggi 31:0f67acfc6236 438 return chksum_struct;
nikitateggi 22:ffa88619551d 439 }
nikitateggi 52:7d9ff7781bdc 440
nikitateggi 52:7d9ff7781bdc 441
nikitateggi 44:05dbea558c9a 442 uint8_t checksum_rawdata(const uint8_t data[], uint32_t numBytes) // this function to calculate the checksum for the raw data
nikitateggi 31:0f67acfc6236 443 {
nikitateggi 52:7d9ff7781bdc 444
nikitateggi 45:067673dae242 445 uint32_t sum=0;
nikitateggi 45:067673dae242 446 uint8_t chksum_datatrfr=0;
nikitateggi 45:067673dae242 447 uint32_t index = 0;
nikitateggi 45:067673dae242 448 uint32_t index1 = 0;
nikitateggi 44:05dbea558c9a 449 sum += SOS;
nikitateggi 44:05dbea558c9a 450 sum += DATA_TRFR;
nikitateggi 45:067673dae242 451 index1=(numBytes*4);
nikitateggi 45:067673dae242 452 sum +=(index1>>(8*0))&0xFF;
nikitateggi 31:0f67acfc6236 453 sum +=(index1>>(8*1))&0xFF;
nikitateggi 52:7d9ff7781bdc 454
nikitateggi 45:067673dae242 455 for (index=0U; index<(numBytes*4); index++)
nikitateggi 45:067673dae242 456 {
nikitateggi 31:0f67acfc6236 457 sum += data[index];
nikitateggi 45:067673dae242 458 }
nikitateggi 52:7d9ff7781bdc 459
nikitateggi 45:067673dae242 460 sum+=EOS;
nikitateggi 52:7d9ff7781bdc 461
nikitateggi 45:067673dae242 462 chksum_datatrfr = sum & 0x000000FF;
nikitateggi 44:05dbea558c9a 463 //mc.printf("chksum_datatrfr=%02x\n",chksum_datatrfr);
nikitateggi 45:067673dae242 464 return chksum_datatrfr;
nikitateggi 44:05dbea558c9a 465 }
nikitateggi 52:7d9ff7781bdc 466
nikitateggi 52:7d9ff7781bdc 467