rohit gupta
Added 4 point or 8 point averaging function .
Dependencies: SDFileSystem ds3231 eeprom_Nikita mbed testUniGraphic_150217
Fork of
merged_code2_3rd_nov_2017
by 
nikita teggi
Diff: bt.cpp
- Revision:
- 44:05dbea558c9a
- Parent:
- 36:00d96aa14658
- Child:
- 45:067673dae242
--- a/bt.cpp Mon Sep 11 13:09:29 2017 +0000
+++ b/bt.cpp Tue Sep 12 04:16:41 2017 +0000
@@ -2,16 +2,18 @@
#include "mbed.h"
#include "sdcard.h"
#include "struct.h"
+#include "eeprom_pgm.h"
+#include "main.h"
+
#define ACK 0x00 /// changed //16/06 #define all the values removing structure
-#define start_of_file 0x01
-#define end_of_file 0x02
-#define data_trfr 0x03
+#define START_OF_FILE 0x01
+#define END_OF_FILE 0x02
+#define DATA_TRFR 0x03
#define NACK 0xFF
-#define sos 0xc0
-#define eos 0xc0
-#define no_of_samples 600 //changed the buffer size from 150- 22/7/17- suhasini
-#include "eeprom_pgm.h"
-//#define len 6000
+#define SOS 0xc0
+#define EOS 0xc0
+#define NO_OF_SAMPLES 600 //changed the buffer size from 150- 22/7/17- suhasini
+
BLEMsg_info *bt_file;
Point *myBleMsg;
@@ -20,29 +22,27 @@
Serial blue(PTC4,PTC3); // communicating bluetooth through serial
static uint32_t total_samples=0; // variable to hold total number of samples
-uint8_t ack_rx; // varibale to receive ack from the bluetooth
Point b; // structure copy
BLEMsg_info bt_file1; // structure copy
static uint32_t total_file_size=0; // to determine the size of the file
-static uint32_t total_file_read=0;
+static uint32_t total_file_size_sent=0;
static uint32_t file_start=0; // variable for 'for loop'
-static uint32_t j=0;
+//static uint32_t j=0;
uint8_t count_send=0;
static uint32_t file_pointer_position=0;
-static int32_t bt_file_tosend=0; // file to send on bluetooth
-static int32_t current_file=0; // file of the test done for the current pid
static uint32_t counter=0;
+static uint32_t v1[NO_OF_SAMPLES];
uint8_t file=0;
-static uint32_t v1[no_of_samples];
+
uint8_t bt_send(uint8_t state_tx)
{
- blue.baud(115200); // baud rate of bluetooth
- bt_file=&bt_file1;
- myBleMsg=&b;
- int8_t check_sum=0;
- uint8_t state_rx =0;
+ blue.baud(115200); // baud rate of bluetooth
+ bt_file=&bt_file1;
+ myBleMsg=&b;
+ int8_t check_sum=0;
+ uint8_t state_rx =0;
@@ -52,91 +52,78 @@
{
case 1:
- //blue.printf("\n");
- state_tx =0;
+ state_tx =0;
counter=0;
- total_file_read=0;
+ total_file_size_sent=0;
file_start=0;
- j=0; count_send=0; total_samples=0;
+ // j=0;
+ count_send=0; total_samples=0;
file_pointer_position=0;
- bt_file_tosend=eprom_read(6); // reading the file number(pid) from eeprom which has to be sent to bluetooth
- current_file=eprom_read(1);
- // current_file=2;
- //bt_file_tosend=bt_file_tosend+1;
- //eprom_write(6,bt_file_tosend); // read the current pid
- mc.printf("eeprom file=%d",bt_file_tosend);
- mc.printf("currentfile=%d",current_file);
- if (bt_file_tosend>current_file) // if the file sent to bluetooth and current file are same,
- { // then there is no new file to send
- state_rx =6;
- }
- else
- {
- file=sd_open_read(bt_file_tosend);
- if(file==0)
- {
- state_rx =6;
- }
- else
- {
- sendinit();
- total_file_size=file_size() ; // determined the file size
- state_rx =1;
- blue.printf("\n");
- }
- }
-
- break;
-
+ // mc.printf("%d %d\n",current_file, bt_file_tosend);
+ if(get_filepid()>get_btpid())
+ {
+ send_initial_string();
+ state_rx = 1;
+ blue.printf("\n");
+ }
+
+ else
+ {
+ state_rx =0;
+ mc.printf("no file to send\n");
+ }
+ break;
+
- case 2: total_samples=0;
+ case 2: total_samples=0;
+ file=sd_open_read(get_btpid());
+ total_file_size=file_size() ; // determined the file size
sd_read1(bt_file1); // read the sd card file
mc.printf("sd file opened to read data in it\n");
myBleMsg->bt_msg=bt_file1; //copy the contents to the structure
- send(); // send the initial string
-
+ send_structure(); // send the initial string
blue.printf("\n");
mc.printf("sent initial string\n");
total_samples= myBleMsg->bt_msg.num_samples.num_sample_ppg_dummy+myBleMsg->bt_msg.num_samples.num_sample_ecg_OTtyp;
-
state_tx =0;
state_rx =2;
count_send=0;
- total_file_read=file_size1();
+ total_file_size_sent=file_size1();
break;
- case 3: counter=0;
- if(count_send<(total_samples/no_of_samples))
- {
- sd_read(v1,no_of_samples);
- counter=j+no_of_samples; //read 1500 samples
- send_data_str1();
-
- for(file_start=j;file_start<(j+no_of_samples);file_start++)
- {
+ case 3:
+ counter=0;
+ if(count_send<(total_samples/NO_OF_SAMPLES))
+ {
+ sd_read(v1,NO_OF_SAMPLES);
+ counter=NO_OF_SAMPLES; //read 1500 samples
+ send_data_str1();
+ for(file_start=0;file_start<(NO_OF_SAMPLES);file_start++)
+ {
- blue.printf("%08x", v1[file_start]);
+ blue.printf("%08x", v1[file_start]);
- }
+ }
- check_sum=checksum((uint8_t *)v1,counter); // calculating checksum // calculating checksum
- state_tx =0;
- state_rx =3;
- send_data_str2(check_sum); // send the remaining part of the string
+ check_sum=checksum_rawdata((uint8_t *)v1,counter); // calculating checksum // calculating checksum
+ state_tx =0;
+ state_rx =3;
+ send_data_str2(check_sum); // send the remaining part of the string
- }
+ }
- else
- {
- for(int l=0;l<no_of_samples;l++)
- {
- v1[l]=NULL;
- }
- counter=(total_samples-( no_of_samples*count_send));
+ else
+ {
+ for(uint16_t l=0;l<NO_OF_SAMPLES;l++)
+ {
+ v1[l]=NULL;
+ }
+ counter=(total_samples-( NO_OF_SAMPLES*count_send));
send_data_str1();
- sd_read(v1,(total_samples-( no_of_samples*count_send)));
- for(file_start=j;file_start<(total_samples-( no_of_samples*count_send));file_start++)
+ sd_read(v1,(total_samples-( NO_OF_SAMPLES*count_send)));
+
+ for(file_start=0;file_start<(total_samples-( NO_OF_SAMPLES*count_send));file_start++)
{
blue.printf("%08x", v1[file_start]);
@@ -144,28 +131,40 @@
state_tx=0;
state_rx=4;
- check_sum=checksum((uint8_t *)v1,counter); // calculating checksum
+ check_sum=checksum_rawdata((uint8_t *)v1,counter); // calculating checksum
send_data_str2(check_sum);
}
- total_file_read=file_size1();
+ total_file_size_sent=file_size1();
blue.printf("\n");
break;
- case 4: total_file_read=file_size1();
- if(total_file_read==total_file_size) // if the total file size is same as total file size
+ case 4: total_file_size_sent=file_size1();
+ if(total_file_size_sent==total_file_size) // if the total file size is same as total file size
{ // then there is no more data to send in that particular file
- state_rx=6;
- sendlast();
+ state_rx=5;
+ send_last_string();
blue.printf("\n");
- // sd_close();
+
}
else
{
- state_rx=5;
- total_file_read=file_size1();
+
+ total_samples=0;
+ sd_read1(bt_file1); // read the sd card file
+ mc.printf("sd file opened to read data in it\n");
+ myBleMsg->bt_msg=bt_file1; //copy the contents to the structure
+ send_structure(); // send the initial string
+ blue.printf("\n");
+ mc.printf("sent initial string\n");
+ total_samples= myBleMsg->bt_msg.num_samples.num_sample_ppg_dummy+myBleMsg->bt_msg.num_samples.num_sample_ecg_OTtyp;
+ state_tx =0;
+ state_rx =2;
+ count_send=0;
+ total_file_size_sent=file_size1();
+
}
@@ -184,26 +183,31 @@
{
unsigned char state_tx =1; //state for transmitting
-
-Timer t; // timer
-uint8_t ack_rx; // varibale to receive ack from the bluetooth
-//Point b; // structure copy
-//myBleMsg=&b;
-t.start(); // timer start
+uint8_t ack_rx=0; // varibale to receive ack from the bluetooth
uint8_t sos_rx=0; // sos received from app
uint8_t eos_rx=0; // eos received from app
-uint8_t chksum_rx=0; // check sum received from app
-
-
+uint32_t length_rx=0;
+uint8_t chksum_rx=0;
+
+ while (blue.readable())
+ {
+ blue.scanf("%02x", &sos_rx);
+ blue.scanf("%02x", &ack_rx);
+ blue.scanf("%08x", &length_rx);
+ blue.scanf("%02x", &eos_rx);
+ blue.scanf("%02x", &chksum_rx);
+ break;
+ }
+ mc.printf("%02x%02x%08x%02x%02x", sos_rx,ack_rx,length_rx,eos_rx,chksum_rx);
+
switch(state_rx)
{
case 1: // wait for the ack
state_rx=0;
myBleMsg->proto=ACK;
- blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx);
-
- if (ack_rx==myBleMsg->proto)
+ if (ack_rx == ACK)
+
{
state_tx=2;
@@ -214,19 +218,17 @@
{
state_tx=1;
- sd_close();
+ // sd_close();
}
break;
case 2: state_rx =0; //wait for the ack
- myBleMsg->proto=ACK;
-
- blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx);
- if (ack_rx==myBleMsg->proto)
+
+ if (ack_rx == ACK)
{
state_tx=3;
- file_pointer_position=total_file_read;
+ file_pointer_position=total_file_size_sent;
}
else
@@ -243,36 +245,12 @@
case 3:
state_rx =0;
- myBleMsg->proto=ACK;
- blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx);
- if (ack_rx==myBleMsg->proto)
+ if (ack_rx == ACK)
{
state_tx=3;
count_send=count_send+1;
- file_pointer_position=total_file_read;
- }
-
- else
-
- {
-
- state_tx=3;
- file_start=file_start- no_of_samples;
- setpos1(file_pointer_position);
- }
-
- break;
-
- case 4:
- state_rx =0;
- myBleMsg->proto=ACK;
- blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx);
- if (ack_rx==myBleMsg->proto)
- {
- state_tx=4;
- count_send=count_send+1;
- file_pointer_position=total_file_read;
+ file_pointer_position=total_file_size_sent;
}
else
@@ -280,52 +258,48 @@
{
state_tx=3;
- file_start=file_start- no_of_samples;
+ file_start=file_start- NO_OF_SAMPLES;
+ setpos1(file_pointer_position);
+ }
+
+ break;
+
+ case 4:
+ state_rx =0;
+ if (ack_rx == ACK)
+ {
+ state_tx=4;
+ count_send=count_send+1;
+ file_pointer_position=total_file_size_sent;
+ }
+
+ else
+
+ {
+
+ state_tx=3;
+ file_start=file_start- NO_OF_SAMPLES;
setpos1(file_pointer_position);
}
break;
- case 5: state_tx=2;
- break;
-
- case 6: state_rx =0;
- bt_file_tosend=bt_file_tosend+1;
- eprom_write(6,bt_file_tosend);
- mc.printf("next file");
- /*myBleMsg->proto=ACK;
- blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx);
- if (ack_rx==myBleMsg->proto)
- {*/
- if (bt_file_tosend<=current_file)
- {
- if (file==1)
- {
- sd_close();
- }
-
-
- state_tx=1;
-
- mc.printf("next file");
- }
-
- else
- {
- state_tx=0;
- mc.printf("out");
- }
-
- // }
-
- /* else
-
- {
+
+ case 5: state_rx = 0;
+ if (ack_rx == ACK)
+ {
+ sd_close();
+ increment_btpid();
+ mc.printf("next file");
+ state_tx=1;
+
+ }
- state_tx=4;
+ else
+ {
+ state_tx = 4;
- } */
-
- break;
+ }
+ break;
}
@@ -338,11 +312,11 @@
-void send() // function to send the structure to bluetooth
+void send_structure() // function to send the structure to bluetooth
{
- myBleMsg->start_of_string=sos;
+ myBleMsg->start_of_string=SOS;
myBleMsg->length_file=26;
- myBleMsg->proto=data_trfr; // data transfer mode
+ myBleMsg->proto=DATA_TRFR; // data transfer mode
blue.printf("%02x",myBleMsg->start_of_string);
blue.printf("%02x",myBleMsg->proto);
blue.printf("%08x",myBleMsg->length_file); //changed the sequence
@@ -360,28 +334,29 @@
blue.printf("%04x",myBleMsg->bt_msg.num_samples. num_sample_ppg_dummy);
blue.printf("%04x",myBleMsg->bt_msg.num_samples.num_sample_ecg_OTtyp);
blue.printf("%04x",myBleMsg->bt_msg.cal_data.cal_sbp_dummy);
- blue.printf("%04x",myBleMsg->bt_msg.cal_data.cal_dbp_OTtyp);
- myBleMsg->end_of_string=eos;
+ blue.printf("%04x",myBleMsg->bt_msg.cal_data.cal_dbp_OTtyp); \
+ myBleMsg->end_of_string=EOS;
myBleMsg->chk_sum = checksum_struct((uint8_t *)myBleMsg, sizeof(Point));
blue.printf("%02x",myBleMsg->end_of_string);
blue.printf("%02x",myBleMsg->chk_sum);
+
}
-void sendinit() // function to send the initial string at the start f communication to bluetooth
+void send_initial_string() // function to send the initial string at the start f communication to bluetooth
{
uint8_t sum_init=0 ;
- myBleMsg->start_of_string=sos;
+ myBleMsg->start_of_string=SOS;
myBleMsg->length_file=0;
- myBleMsg->proto=start_of_file;
+ myBleMsg->proto=START_OF_FILE;
// myBleMsg->bt_msg=NULL;
sum_init=checksum_init();
myBleMsg->chk_sum=sum_init;
blue.printf("%02x",myBleMsg->start_of_string);
blue.printf("%02x",myBleMsg->proto);
blue.printf("%08x",myBleMsg->length_file); // chnged
- myBleMsg->end_of_string=eos;
+ myBleMsg->end_of_string=EOS;
blue.printf("%02x",myBleMsg->end_of_string);
blue.printf("%02x",myBleMsg->chk_sum);
@@ -393,7 +368,7 @@
uint32_t sum=0;
uint8_t chksum_init=0;
- sum=sos+eos+start_of_file;
+ sum=SOS+EOS+START_OF_FILE;
chksum_init=sum & 0x000000FF;
return chksum_init;
}
@@ -403,38 +378,45 @@
uint32_t sum=0;
uint8_t chksum_last=0;
- sum=sos+eos+end_of_file; // changed //16/06 #define all the values removing structure
+ sum=SOS+EOS+END_OF_FILE; // changed //16/06 #define all the values removing structure
chksum_last=sum & 0x000000FF;
return chksum_last;
}
- void sendlast() // function to send the last string to the bluetooth // which determines the end of file
+ void send_last_string() // function to send the last string to the bluetooth // which determines the end of file
{
uint8_t sum_last=0;
- myBleMsg->start_of_string=sos;
+ myBleMsg->start_of_string=SOS;
myBleMsg->length_file=0;
- myBleMsg->proto=end_of_file;
+ myBleMsg->proto=END_OF_FILE;
// myBleMsg->bt_msg=NULL;
sum_last=checksum_last();
myBleMsg->chk_sum=sum_last;
blue.printf("%02x",myBleMsg->start_of_string);
blue.printf("%02x",myBleMsg->proto);
blue.printf("%08x",myBleMsg->length_file); // chnged
- myBleMsg->end_of_string=eos;
+ mc.printf("%02x",myBleMsg->start_of_string);
+ mc.printf("%02x",myBleMsg->proto);
+ mc.printf("%08x",myBleMsg->length_file);
+ myBleMsg->end_of_string=EOS;
blue.printf("%02x",myBleMsg->end_of_string);
blue.printf("%02x",myBleMsg->chk_sum);
+ mc.printf("%02x",myBleMsg->end_of_string);
+ mc.printf("%02x",myBleMsg->chk_sum);
}
void send_data_str1() // function to send a part of the structure // after this raw data is sent//
{
- myBleMsg->start_of_string=sos;
+ myBleMsg->start_of_string=SOS;
myBleMsg->length_file=(counter*4);
- myBleMsg->proto=data_trfr;
+ myBleMsg->proto=DATA_TRFR;
blue.printf("%02x",myBleMsg->start_of_string);
blue.printf("%02x",myBleMsg->proto); // chnaged
blue.printf("%08x",myBleMsg->length_file);
-
+ mc.printf("%02x",myBleMsg->start_of_string);
+ mc.printf("%02x",myBleMsg->proto); // chnaged
+ mc.printf("%08x",myBleMsg->length_file);
}
@@ -442,41 +424,13 @@
void send_data_str2(uint8_t check_sum) // after raw data// this last part of structure is sent
{
myBleMsg->chk_sum=check_sum;
- myBleMsg->end_of_string=eos;
+ myBleMsg->end_of_string=EOS;
blue.printf("%02x",myBleMsg->end_of_string);
blue.printf("%02x",myBleMsg->chk_sum);
+ mc.printf("%02x",myBleMsg->end_of_string);
+ mc.printf("%02x",myBleMsg->chk_sum);
}
-/*uint8_t checksum(uint32_t *v1) // this function to calculate the checksum for the raw data
-{
-
-uint32_t sum=0;
-uint8_t chksum_datatrfr=0;
-
- for (int i=0;i< no_of_samples;i++)
- {
- sum=sum+v1[i];
- }
-
- sum=sos+eos+sum+counter+data_trfr;
- chksum_datatrfr=sum & 0x000000FF;
- return chksum_datatrfr;
-}
-
-
-
-
-
-uint8_t checksum_struct() // calculating checksum for sending the file structure
-{
-
- uint32_t sum=0;
- uint8_t chksum_struct=0;
-
- 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;
- chksum_struct=sum & 0x000000FF;
- return chksum_struct;
-}*/
uint8_t checksum_struct(const uint8_t data[], uint16_t numBytes) // calculating checksum for
{
@@ -494,16 +448,15 @@
}
-uint8_t checksum(const uint8_t data[], uint32_t numBytes) // this function to calculate the checksum for the raw data
+uint8_t checksum_rawdata(const uint8_t data[], uint32_t numBytes) // this function to calculate the checksum for the raw data
{
uint32_t sum=0;
uint8_t chksum_datatrfr=0;
-uint8_t i = 0;
uint32_t index = 0;
uint32_t index1 = 0;
- sum += sos;
- sum += data_trfr;
+ sum += SOS;
+ sum += DATA_TRFR;
index1=(numBytes*4);
sum +=(index1>>(8*0))&0xFF;
sum +=(index1>>(8*1))&0xFF;
@@ -514,9 +467,13 @@
}
- sum+=eos;
+ sum+=EOS;
chksum_datatrfr = sum & 0x000000FF;
- mc.printf("chksum_datatrfr=%02x\n",chksum_datatrfr);
+ //mc.printf("chksum_datatrfr=%02x\n",chksum_datatrfr);
return chksum_datatrfr;
-}
\ No newline at end of file
+}
+
+
+
+