Pietro Di Zinno
export test
Dependencies: SDFileSystem ds3231 eeprom_Nikita mbed testUniGraphic_150217
Fork of
Int_Demo_09May2017_Suhasini_HRavg_Nikita_ili9341
by 
nikita teggi
Diff: bt.cpp
- Revision:
- 27:907f8ce0025e
- Parent:
- 24:d992ee8369f4
- Child:
- 28:65f2d80b7eb7
--- a/bt.cpp Wed Jul 05 15:36:58 2017 +0000
+++ b/bt.cpp Sat Jul 08 04:19:45 2017 +0000
@@ -1,8 +1,3 @@
-// added newline, changed the sequence of cmd and length, added send last function
-
-
-
-
#include "mbed.h"
#include "sdcard.h"
@@ -14,55 +9,83 @@
#define NACK 0xFF
#define sos 0xc0
#define eos 0xc0
+#define no_of_samples 1500
+#include "eeprom_pgm.h"
//#define len 6000
-
-
BLEMsg_info *bt_file;
Point *myBleMsg;
-//bt_st *as;
-Serial mc(USBTX,USBRX);
-Serial blue(PTC4,PTC3);
- // buffer for data
+
+Serial mc(USBTX,USBRX); // serial terminal
+Serial blue(PTC4,PTC3); // communicating bluetooth through serial
+
uint32_t total_samples=0; // variable to hold total number of samples
-//Timer t; // timer
uint8_t ack_rx; // varibale to receive ack from the bluetooth
Point b; // structure copy
BLEMsg_info bt_file1; // structure copy
-uint32_t counter=0;
- uint32_t total_file_size=0; // to determine the size of the file
- uint32_t total_file_read=0;
-
+uint32_t total_file_size=0; // to determine the size of the file
+uint32_t total_file_read=0;
uint32_t file_start=0; // variable for 'for loop'
uint32_t j=0;
-uint8_t k=0;
+uint8_t count_send=0;
uint32_t file_pointer_position=0;
-
-
+int32_t bt_file_tosend=0; // file to send on bluetooth
+int32_t current_file=0; // file of the test done for the current pid
+uint32_t counter=0;
+uint8_t file=0;
uint8_t bt_send(uint8_t state_tx)
{
- uint32_t v1[1500];
+ uint32_t v1[no_of_samples];
blue.baud(115200); // baud rate of bluetooth
bt_file=&bt_file1;
myBleMsg=&b;
int8_t check_sum=0;
- static uint8_t state_rx =0;
-//t.start(); // timer start
+ uint8_t state_rx =0;
+
+
+
switch(state_tx)
{
- case 1: sendinit();
- blue.printf("\n");
- sd_open_read(36); // open the file for read
- total_file_size=file_size() ; // determined the file size
- // mc.printf("filesize=%d",total_file_size); // TO SEND INITIAL STRING
- state_rx =1;
- state_tx =0;
- break;
+ case 1:
+ //blue.printf("\n");
+ state_tx =0;
+ counter=0;
+ total_file_read=0;
+ file_start=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);
+ 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_tx =6;
+ }
+ else
+ {
+ sendinit();
+ total_file_size=file_size() ; // determined the file size
+ state_rx =1;
+ blue.printf("\n");
+ }
+ }
+
+ break;
case 2: total_samples=0;
@@ -70,99 +93,81 @@
myBleMsg->bt_msg=bt_file1; //copy the contents to the structure
send(); // send the initial string
blue.printf("\n");
- total_samples= myBleMsg->bt_msg.num_samples. num_sample_ppg_dummy+myBleMsg->bt_msg.num_samples.num_sample_ecg_OTtyp;
+ 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;
- k=0;
- // mc.printf("samples=%d", total_samples);
+ count_send=0;
total_file_read=file_size1();
- //mc.printf("fileread=%d",total_file_read);
- //mc.printf("pointer=%d\n",file_pointer_position);
break;
- case 3: counter=0;
- //mc.printf("kkkk=%d\n",k);
- //mc.printf("samples=%d", total_samples); // send the raw data
- if(k<(total_samples/1500))
+ case 3: counter=0;
+ if(count_send<(total_samples/no_of_samples))
{
- sd_read(v1,1500);
- counter=j+1500; //read 1500 samples
- send_data_str1();
-
- //mc.printf("file_start,j=%d %d\n",file_start,j); //send the strt of the string
- for(file_start=j;file_start<(j+1500);file_start++)
+ 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++)
{
blue.printf("%08x", v1[file_start]);
- // counter++;
+
}
check_sum=checksum(v1); // calculating checksum
-
- // blue.printf("\n");
- // mc.printf("iiii,hjjjj=%d %d\n",file_start,j);
- state_tx =0;
- state_rx =3;
- send_data_str2(check_sum);
+ state_tx =0;
+ state_rx =3;
+ send_data_str2(check_sum); // send the remaining part of the string
}
else
{
- for(int l=0;l<1500;l++)
+ for(int l=0;l<no_of_samples;l++)
{
v1[l]=NULL;
}
- counter=(total_samples-(1500*k));
- send_data_str1();
- sd_read(v1,(total_samples-(1500*k)));
- for(file_start=j;file_start<(total_samples-(1500*k));file_start++)
+ 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++)
{
blue.printf("%08x", v1[file_start]);
- //counter++;
+
}
-
- // blue.printf("\n");
+
state_tx=0;
state_rx=4;
send_data_str2(check_sum);
}
total_file_read=file_size1();
- blue.printf("\n");
- // mc.printf("fileread=%d",total_file_read );
- // mc.printf("pointer=%d\n",file_pointer_position);
- break;
+ blue.printf("\n");
+ break;
case 4: total_file_read=file_size1();
- // mc.printf("fileread=%d",total_file_read);
- if(total_file_read==total_file_size)
- {
+ if(total_file_read==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();
blue.printf("\n");
- sd_close();
- // mc.printf("exit");
+ // sd_close();
}
else
{
state_rx=5;
- total_file_read=file_size1();
- // mc.printf("fileread=%d",total_file_read );
- //mc.printf("pointer=%d\n",file_pointer_position);
-
+ total_file_read=file_size1();
}
-//t.stop();
+
}
-//mc.printf("time=%d\n",t.read_ms());
+
return state_rx;
}
@@ -173,17 +178,17 @@
uint8_t bt_receive (uint8_t state_rx)
{
-static unsigned char state_tx =1; //state for transmitting
+ 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;
+//Point b; // structure copy
+//myBleMsg=&b;
t.start(); // timer start
-int x2=0;
-int x3=0;
-int x4=0;
-int x5=0;
+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
+
switch(state_rx)
{
@@ -191,8 +196,8 @@
case 1: // wait for the ack
state_rx=0;
myBleMsg->proto=ACK;
- blue.scanf("%02x%02x%08x%02x",&x2,&ack_rx,&x3,&x4);
- // mc.printf("%02x%02x",ack_rx, x2);
+ blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx);
+
if (ack_rx==myBleMsg->proto)
{
@@ -211,7 +216,7 @@
case 2: state_rx =0; //wait for the ack
myBleMsg->proto=ACK;
- blue.scanf("%02x%02x%08x%02x",&x2,&ack_rx,&x3,&x4);
+ blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx);
if (ack_rx==myBleMsg->proto)
{
@@ -225,21 +230,21 @@
state_tx=2;
setpos1(file_pointer_position);
- // mc.printf("pointer=%d\n",file_pointer_position);
+
}
-
+ //blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx);
break;
case 3:
state_rx =0;
myBleMsg->proto=ACK;
- blue.scanf("%02x%02x%08x%02x",&x2,&ack_rx,&x3,&x4);
+ blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx);
if (ack_rx==myBleMsg->proto)
{
state_tx=3;
- k=k+1;
+ count_send=count_send+1;
file_pointer_position=total_file_read;
}
@@ -248,11 +253,7 @@
{
state_tx=3;
- // mc.printf("j=%d\n",j);
- file_start=file_start-1500;
- //mc.printf("j=%d\n",j);
- //
- // mc.printf("file_pointer_position=%d\n",file_pointer_position);
+ file_start=file_start- no_of_samples;
setpos1(file_pointer_position);
}
@@ -261,42 +262,63 @@
case 4:
state_rx =0;
myBleMsg->proto=ACK;
- blue.scanf("%02x%02x%08x%02x",&x2,&ack_rx,&x3,&x4);
+ blue.scanf("%02x%02x%08x%02x",&sos_rx,&ack_rx,&eos_rx,&chksum_rx);
if (ack_rx==myBleMsg->proto)
{
- // bt_r.printf("sent");
state_tx=4;
- k=k+1;
+ count_send=count_send+1;
file_pointer_position=total_file_read;
}
else
{
- //bt_r.printf("no-ack");
+
state_tx=3;
- file_start=file_start-1500;
- // mc.printf("file_pointer_position=%d\n",file_pointer_position);
+ file_start=file_start- no_of_samples;
setpos1(file_pointer_position);
}
break;
case 5: state_tx=2;
-
- break;
-
- case 6: state_tx=0;
+ break;
-
- mc.printf("out");
+ case 6: 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 (bt_file_tosend!=current_file)
+ { sd_close();
+ // bt_file_tosend=bt_file_tosend+1;
+ // eprom_write(6,bt_file_tosend);
+ // sd_open_read(bt_file_tosend);
+ // total_file_size=file_size() ;
+ state_tx=1;
+
+ mc.printf("next file");
+ }
+
+ else
+ {
+ state_tx=0;
+ mc.printf("out");
+ }
+
+ // }
+
+ /* else
+
+ {
+
+ state_tx=4;
+
+ } */
+
break;
-
-
-
-//t.stop();
}
-//bt_r.printf("time=%d\n",t.read_ms());
+
return state_tx;
}
@@ -306,7 +328,7 @@
-void send()
+void send() // function to send the structure to bluetooth
{
myBleMsg->start_of_string=sos;
myBleMsg->length_file=26;
@@ -336,7 +358,7 @@
}
-void sendinit()
+void sendinit() // function to send the initial string at the start f communication to bluetooth
{
uint8_t sum_init=0 ;
@@ -356,7 +378,7 @@
}
-uint8_t checksum_init()
+uint8_t checksum_init() // function to calculate the checksum for the initial string
{
uint32_t sum=0;
@@ -366,7 +388,7 @@
return chksum_init;
}
-uint8_t checksum_last()
+uint8_t checksum_last() // function to calculate the checksum for the last string
{
uint32_t sum=0;
@@ -376,7 +398,7 @@
return chksum_last;
}
- void sendlast()
+ void sendlast() // 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;
@@ -394,7 +416,7 @@
}
- void send_data_str1()
+ void send_data_str1() // function to send a part of the structure // after this raw data is sent//
{
myBleMsg->start_of_string=sos;
myBleMsg->length_file=(counter*4);
@@ -407,7 +429,7 @@
- void send_data_str2(uint8_t check_sum)
+ 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;
@@ -415,13 +437,13 @@
blue.printf("%02x",myBleMsg->chk_sum);
}
-uint8_t checksum(uint32_t *v1)
+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<1500;i++)
+ for (int i=0;i< no_of_samples;i++)
{
sum=sum+v1[i];
}
@@ -435,7 +457,7 @@
-uint8_t checksum_struct()
+uint8_t checksum_struct() // calculating checksum for sending the file structure
{
uint32_t sum=0;