Amit P
Modification into 17th July New display demo code
Dependencies: SDFileSystem ds3231 eeprom_Nikita mbed testUniGraphic_150217
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Ext_Demo_17July2017_newdis
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bt.cpp
00001 00002 #include "mbed.h" 00003 #include "sdcard.h" 00004 #include "struct.h" 00005 #define ACK 0x00 /// changed //16/06 #define all the values removing structure 00006 #define start_of_file 0x01 00007 #define end_of_file 0x02 00008 #define data_trfr 0x03 00009 #define NACK 0xFF 00010 #define sos 0xc0 00011 #define eos 0xc0 00012 #define no_of_samples 150 00013 #include "eeprom_pgm.h" 00014 //#define len 6000 00015 00016 BLEMsg_info *bt_file; 00017 Point *myBleMsg; 00018 00019 Serial mc(USBTX,USBRX); // serial terminal 00020 Serial blue(PTC4,PTC3); // communicating bluetooth through serial 00021 00022 static uint32_t total_samples=0; // variable to hold total number of samples 00023 uint8_t ack_rx; // varibale to receive ack from the bluetooth 00024 Point b; // structure copy 00025 BLEMsg_info bt_file1; // structure copy 00026 static uint32_t total_file_size=0; // to determine the size of the file 00027 static uint32_t total_file_read=0; 00028 static uint32_t file_start=0; // variable for 'for loop' 00029 static uint32_t j=0; 00030 uint8_t count_send=0; 00031 static uint32_t file_pointer_position=0; 00032 static int32_t bt_file_tosend=0; // file to send on bluetooth 00033 static int32_t current_file=0; // file of the test done for the current pid 00034 static uint32_t counter=0; 00035 uint8_t file=0; 00036 static uint32_t v1[no_of_samples]; 00037 00038 uint8_t bt_send(uint8_t state_tx) 00039 { 00040 00041 blue.baud(115200); // baud rate of bluetooth 00042 bt_file=&bt_file1; 00043 myBleMsg=&b; 00044 int8_t check_sum=0; 00045 uint8_t state_rx =0; 00046 00047 00048 00049 00050 00051 switch(state_tx) 00052 { 00053 00054 case 1: 00055 //blue.printf("\n"); 00056 state_tx =0; 00057 counter=0; 00058 total_file_read=0; 00059 file_start=0; 00060 j=0; count_send=0; total_samples=0; 00061 file_pointer_position=0; 00062 bt_file_tosend=eprom_read(6); // reading the file number(pid) from eeprom which has to be sent to bluetooth 00063 current_file=eprom_read(1); 00064 // current_file=2; 00065 //bt_file_tosend=bt_file_tosend+1; 00066 //eprom_write(6,bt_file_tosend); // read the current pid 00067 mc.printf("eeprom file=%d",bt_file_tosend); 00068 mc.printf("currentfile=%d",current_file); 00069 if (bt_file_tosend>current_file) // if the file sent to bluetooth and current file are same, 00070 { // then there is no new file to send 00071 state_rx =6; 00072 } 00073 else 00074 { 00075 file=sd_open_read(bt_file_tosend); 00076 if(file==0) 00077 { 00078 state_rx =6; 00079 } 00080 else 00081 { 00082 sendinit(); 00083 total_file_size=file_size() ; // determined the file size 00084 state_rx =1; 00085 blue.printf("\n"); 00086 } 00087 } 00088 00089 break; 00090 00091 00092 case 2: total_samples=0; 00093 sd_read1(bt_file1); // read the sd card file 00094 myBleMsg->bt_msg=bt_file1; //copy the contents to the structure 00095 send(); // send the initial string 00096 blue.printf("\n"); 00097 total_samples= myBleMsg->bt_msg.num_samples.num_sample_ppg_dummy+myBleMsg->bt_msg.num_samples.num_sample_ecg_OTtyp; 00098 00099 state_tx =0; 00100 state_rx =2; 00101 count_send=0; 00102 total_file_read=file_size1(); 00103 break; 00104 00105 00106 case 3: counter=0; 00107 if(count_send<(total_samples/no_of_samples)) 00108 { 00109 sd_read(v1,no_of_samples); 00110 counter=j+no_of_samples; //read 1500 samples 00111 send_data_str1(); 00112 for(file_start=j;file_start<(j+no_of_samples);file_start++) 00113 { 00114 00115 blue.printf("%08x", v1[file_start]); 00116 00117 } 00118 00119 00120 check_sum=checksum((uint8_t *)v1,counter); // calculating checksum // calculating checksum 00121 state_tx =0; 00122 state_rx =3; 00123 send_data_str2(check_sum); // send the remaining part of the string 00124 00125 } 00126 00127 else 00128 { 00129 for(int l=0;l<no_of_samples;l++) 00130 { 00131 v1[l]=NULL; 00132 } 00133 counter=(total_samples-( no_of_samples*count_send)); 00134 send_data_str1(); 00135 sd_read(v1,(total_samples-( no_of_samples*count_send))); 00136 for(file_start=j;file_start<(total_samples-( no_of_samples*count_send));file_start++) 00137 { 00138 blue.printf("%08x", v1[file_start]); 00139 00140 } 00141 00142 state_tx=0; 00143 state_rx=4; 00144 check_sum=checksum((uint8_t *)v1,counter); // calculating checksum 00145 send_data_str2(check_sum); 00146 } 00147 00148 total_file_read=file_size1(); 00149 blue.printf("\n"); 00150 break; 00151 00152 00153 case 4: total_file_read=file_size1(); 00154 if(total_file_read==total_file_size) // if the total file size is same as total file size 00155 { // then there is no more data to send in that particular file 00156 00157 state_rx=6; 00158 sendlast(); 00159 blue.printf("\n"); 00160 // sd_close(); 00161 } 00162 else 00163 { 00164 state_rx=5; 00165 total_file_read=file_size1(); 00166 } 00167 00168 00169 00170 00171 } 00172 00173 return state_rx; 00174 00175 } 00176 00177 00178 00179 00180 uint8_t bt_receive (uint8_t state_rx) 00181 { 00182 00183 unsigned char state_tx =1; //state for transmitting 00184 00185 Timer t; // timer 00186 uint8_t ack_rx; // varibale to receive ack from the bluetooth 00187 //Point b; // structure copy 00188 //myBleMsg=&b; 00189 t.start(); // timer start 00190 uint8_t sos_rx=0; // sos received from app 00191 uint8_t eos_rx=0; // eos received from app 00192 uint8_t chksum_rx=0; // check sum received from app 00193 00194 00195 switch(state_rx) 00196 { 00197 00198 case 1: // wait for the ack 00199 state_rx=0; 00200 myBleMsg->proto=ACK; 00201 blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx); 00202 00203 if (ack_rx==myBleMsg->proto) 00204 { 00205 00206 state_tx=2; 00207 } 00208 00209 else 00210 00211 { 00212 00213 state_tx=1; 00214 sd_close(); 00215 } 00216 break; 00217 00218 case 2: state_rx =0; //wait for the ack 00219 myBleMsg->proto=ACK; 00220 00221 blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx); 00222 if (ack_rx==myBleMsg->proto) 00223 { 00224 00225 state_tx=3; 00226 file_pointer_position=total_file_read; 00227 } 00228 00229 else 00230 00231 { 00232 00233 state_tx=2; 00234 setpos1(file_pointer_position); 00235 00236 } 00237 //blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx); 00238 break; 00239 00240 00241 case 3: 00242 state_rx =0; 00243 myBleMsg->proto=ACK; 00244 blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx); 00245 if (ack_rx==myBleMsg->proto) 00246 { 00247 00248 state_tx=3; 00249 count_send=count_send+1; 00250 file_pointer_position=total_file_read; 00251 } 00252 00253 else 00254 00255 { 00256 00257 state_tx=3; 00258 file_start=file_start- no_of_samples; 00259 setpos1(file_pointer_position); 00260 } 00261 00262 break; 00263 00264 case 4: 00265 state_rx =0; 00266 myBleMsg->proto=ACK; 00267 blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx); 00268 if (ack_rx==myBleMsg->proto) 00269 { 00270 state_tx=4; 00271 count_send=count_send+1; 00272 file_pointer_position=total_file_read; 00273 } 00274 00275 else 00276 00277 { 00278 00279 state_tx=3; 00280 file_start=file_start- no_of_samples; 00281 setpos1(file_pointer_position); 00282 } 00283 break; 00284 00285 case 5: state_tx=2; 00286 break; 00287 00288 case 6: state_rx =0; 00289 bt_file_tosend=bt_file_tosend+1; 00290 eprom_write(6,bt_file_tosend); 00291 mc.printf("next file"); 00292 /*myBleMsg->proto=ACK; 00293 blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx); 00294 if (ack_rx==myBleMsg->proto) 00295 {*/ 00296 if (bt_file_tosend<=current_file) 00297 { 00298 if (file==1) 00299 { 00300 sd_close(); 00301 } 00302 00303 00304 state_tx=1; 00305 00306 mc.printf("next file"); 00307 } 00308 00309 else 00310 { 00311 state_tx=0; 00312 mc.printf("out"); 00313 } 00314 00315 // } 00316 00317 /* else 00318 00319 { 00320 00321 state_tx=4; 00322 00323 } */ 00324 00325 break; 00326 00327 } 00328 00329 return state_tx; 00330 } 00331 00332 00333 00334 00335 00336 00337 00338 void send() // function to send the structure to bluetooth 00339 { 00340 myBleMsg->start_of_string=sos; 00341 myBleMsg->length_file=26; 00342 myBleMsg->proto=data_trfr; // data transfer mode 00343 blue.printf("%02x",myBleMsg->start_of_string); 00344 blue.printf("%02x",myBleMsg->proto); 00345 blue.printf("%08x",myBleMsg->length_file); //changed the sequence 00346 blue.printf("%08x",myBleMsg->bt_msg.length); 00347 blue.printf("%02x",myBleMsg->bt_msg.device_id); 00348 blue.printf("%08x",myBleMsg->bt_msg.patient_id); 00349 blue.printf("%02x",myBleMsg->bt_msg.date_time.date); 00350 blue.printf("%02x",myBleMsg->bt_msg.date_time.month); 00351 blue.printf("%02x",myBleMsg->bt_msg.date_time.year); 00352 blue.printf("%02x",myBleMsg->bt_msg.date_time.hour); 00353 blue.printf("%02x",myBleMsg->bt_msg.date_time.mins); 00354 blue.printf("%02x",myBleMsg->bt_msg.date_time.sec); 00355 blue.printf("%02x",myBleMsg->bt_msg.test_type); 00356 blue.printf("%04x",myBleMsg->bt_msg.sampling_freq); 00357 blue.printf("%04x",myBleMsg->bt_msg.num_samples. num_sample_ppg_dummy); 00358 blue.printf("%04x",myBleMsg->bt_msg.num_samples.num_sample_ecg_OTtyp); 00359 blue.printf("%04x",myBleMsg->bt_msg.cal_data.cal_sbp_dummy); 00360 blue.printf("%04x",myBleMsg->bt_msg.cal_data.cal_dbp_OTtyp); 00361 myBleMsg->end_of_string=eos; 00362 myBleMsg->chk_sum = checksum_struct((uint8_t *)myBleMsg, sizeof(Point)); 00363 blue.printf("%02x",myBleMsg->end_of_string); 00364 blue.printf("%02x",myBleMsg->chk_sum); 00365 00366 } 00367 00368 void sendinit() // function to send the initial string at the start f communication to bluetooth 00369 { 00370 00371 uint8_t sum_init=0 ; 00372 myBleMsg->start_of_string=sos; 00373 myBleMsg->length_file=0; 00374 myBleMsg->proto=start_of_file; 00375 // myBleMsg->bt_msg=NULL; 00376 sum_init=checksum_init(); 00377 myBleMsg->chk_sum=sum_init; 00378 blue.printf("%02x",myBleMsg->start_of_string); 00379 blue.printf("%02x",myBleMsg->proto); 00380 blue.printf("%08x",myBleMsg->length_file); // chnged 00381 myBleMsg->end_of_string=eos; 00382 blue.printf("%02x",myBleMsg->end_of_string); 00383 blue.printf("%02x",myBleMsg->chk_sum); 00384 00385 } 00386 00387 00388 uint8_t checksum_init() // function to calculate the checksum for the initial string 00389 { 00390 00391 uint32_t sum=0; 00392 uint8_t chksum_init=0; 00393 sum=sos+eos+start_of_file; 00394 chksum_init=sum & 0x000000FF; 00395 return chksum_init; 00396 } 00397 00398 uint8_t checksum_last() // function to calculate the checksum for the last string 00399 { 00400 00401 uint32_t sum=0; 00402 uint8_t chksum_last=0; 00403 sum=sos+eos+end_of_file; // changed //16/06 #define all the values removing structure 00404 chksum_last=sum & 0x000000FF; 00405 return chksum_last; 00406 } 00407 00408 void sendlast() // function to send the last string to the bluetooth // which determines the end of file 00409 { 00410 uint8_t sum_last=0; 00411 myBleMsg->start_of_string=sos; 00412 myBleMsg->length_file=0; 00413 myBleMsg->proto=end_of_file; 00414 // myBleMsg->bt_msg=NULL; 00415 sum_last=checksum_last(); 00416 myBleMsg->chk_sum=sum_last; 00417 blue.printf("%02x",myBleMsg->start_of_string); 00418 blue.printf("%02x",myBleMsg->proto); 00419 blue.printf("%08x",myBleMsg->length_file); // chnged 00420 myBleMsg->end_of_string=eos; 00421 blue.printf("%02x",myBleMsg->end_of_string); 00422 blue.printf("%02x",myBleMsg->chk_sum); 00423 00424 } 00425 00426 void send_data_str1() // function to send a part of the structure // after this raw data is sent// 00427 { 00428 myBleMsg->start_of_string=sos; 00429 myBleMsg->length_file=(counter*4); 00430 myBleMsg->proto=data_trfr; 00431 blue.printf("%02x",myBleMsg->start_of_string); 00432 blue.printf("%02x",myBleMsg->proto); // chnaged 00433 blue.printf("%08x",myBleMsg->length_file); 00434 00435 } 00436 00437 00438 00439 void send_data_str2(uint8_t check_sum) // after raw data// this last part of structure is sent 00440 { 00441 myBleMsg->chk_sum=check_sum; 00442 myBleMsg->end_of_string=eos; 00443 blue.printf("%02x",myBleMsg->end_of_string); 00444 blue.printf("%02x",myBleMsg->chk_sum); 00445 } 00446 00447 /*uint8_t checksum(uint32_t *v1) // this function to calculate the checksum for the raw data 00448 { 00449 00450 uint32_t sum=0; 00451 uint8_t chksum_datatrfr=0; 00452 00453 for (int i=0;i< no_of_samples;i++) 00454 { 00455 sum=sum+v1[i]; 00456 } 00457 00458 sum=sos+eos+sum+counter+data_trfr; 00459 chksum_datatrfr=sum & 0x000000FF; 00460 return chksum_datatrfr; 00461 } 00462 00463 00464 00465 00466 00467 uint8_t checksum_struct() // calculating checksum for sending the file structure 00468 { 00469 00470 uint32_t sum=0; 00471 uint8_t chksum_struct=0; 00472 00473 sum=myBleMsg->start_of_string+myBleMsg->proto+myBleMsg->bt_msg.length+myBleMsg->bt_msg.device_id+myBleMsg->bt_msg.date_time.date+myBleMsg->bt_msg.date_time.month+myBleMsg->bt_msg.date_time.year+myBleMsg->bt_msg.date_time.hour+myBleMsg->bt_msg.date_time.mins+myBleMsg->bt_msg.date_time.sec+myBleMsg->bt_msg.test_type+myBleMsg->bt_msg.sampling_freq+myBleMsg->bt_msg.num_samples.num_sample_ppg_dummy+myBleMsg->bt_msg.num_samples.num_sample_ecg_OTtyp+myBleMsg->bt_msg.cal_data.cal_sbp_dummy+myBleMsg->bt_msg.cal_data.cal_dbp_OTtyp+myBleMsg->end_of_string+myBleMsg->chk_sum; 00474 chksum_struct=sum & 0x000000FF; 00475 return chksum_struct; 00476 }*/ 00477 00478 uint8_t checksum_struct(const uint8_t data[], uint16_t numBytes) // calculating checksum for 00479 { 00480 uint32_t chksum_struct = 0; 00481 uint16_t index = 0; 00482 00483 for (index=0U; index < (numBytes-1); index++) 00484 { 00485 chksum_struct += data[index]; 00486 //blue.printf("data=%02x\n",data[index]); 00487 00488 } 00489 // blue.printf("%08x\n",chksum_struct); 00490 return chksum_struct; 00491 } 00492 00493 00494 uint8_t checksum(const uint8_t data[], uint32_t numBytes) // this function to calculate the checksum for the raw data 00495 { 00496 00497 uint32_t sum=0; 00498 uint8_t chksum_datatrfr=0; 00499 uint8_t i = 0; 00500 uint32_t index = 0; 00501 uint32_t index1 = 0; 00502 sum += sos; 00503 sum += data_trfr; 00504 index1=(numBytes*4); 00505 sum +=(index1>>(8*0))&0xFF; 00506 sum +=(index1>>(8*1))&0xFF; 00507 00508 for (index=0U; index<(numBytes*4); index++) 00509 { 00510 sum += data[index]; 00511 00512 } 00513 00514 sum+=eos; 00515 00516 chksum_datatrfr = sum & 0x000000FF; 00517 mc.printf("chksum_datatrfr=%02x\n",chksum_datatrfr); 00518 return chksum_datatrfr; 00519 } 00520
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