MH
Test2
Dependencies: MAX30003 max32630fthr DS1307
Diff: main.cpp
- Revision:
- 17:4bf0775c1b38
- Parent:
- 16:8fc65c8fa0e8
- Child:
- 18:462e396f9e5a
--- a/main.cpp Tue May 18 23:43:34 2021 +0000
+++ b/main.cpp Thu May 20 01:40:51 2021 +0000
@@ -1,8 +1,10 @@
-#include "MAX30003.h"
+
#include "mbed.h"
#include "max32630fthr.h"
#include "ds1307.h"
+#include "MAX30003.h"
+
//#include <BufferedSerial.h>
#include <string>
//#include <Serial.h>
@@ -18,6 +20,10 @@
DigitalOut ledA(LED2);
void ecg_config(MAX30003 &ecgAFE);
+
+void ecg_config_off(MAX30003& ecgAFE);
+
+
//BufferedSerial pc(P3_1,P3_0); // Use USB debug probe for serial link static Unbuffered
BufferedSerial pc(P0_1,P0_0);
@@ -26,7 +32,7 @@
//Serial uart_1(USBTX, USBRX); // Use USB debug probe for serial link static Unbuffered
//
//rial pc(P0_1,P0_0);
-volatile bool ecgFIFOIntFlag = 0;
+
volatile bool timerflag = 0;
FileHandle *mbed::mbed_override_console(int fd)
@@ -34,11 +40,18 @@
return &pc;
}
-void ecgFIFO_callback_1() { // Triggered when the ECG FIFO is about to be full
-
+volatile bool ecgFIFOIntFlag = 0;
+void ecgFIFO_callback()
+{
ecgFIFOIntFlag = 1;
}
+volatile bool ecgFIFOIntFlag_1 = 0;
+void ecgFIFO_callback_1()
+{
+ ecgFIFOIntFlag_1 = 1;
+}
+
time_t asUnixTime(int year, int mon, int mday, int hour, int min, int sec) {
struct tm t;
t.tm_year = year - 1900;
@@ -51,6 +64,7 @@
return mktime(&t); // returns seconds elapsed since January 1, 1970 (begin of the Epoch)
}
+
int main(void)
{
// Constants
@@ -61,8 +75,7 @@
const int ETAG_BITS_MASK = 0x7;
timer_fast.start();
- DigitalOut rLed(LED2, LED_ON);
-
+ DigitalOut rLed(LED2, LED_ON);
// pc.baud(9600);
//pc.set_baud(115200); // Baud rate = 115200
@@ -72,8 +85,13 @@
// /* stop bit */ 1 //1
//);
//uart_1.baud(115200);
+
+//----------------------------------------------------------------------------------------------//
+
InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the
- ecgFIFO_int.fall(&ecgFIFO_callback_1); // ecg FIFO interrupt at falling edge
+ ecgFIFO_int.fall(&ecgFIFO_callback); // ecg FIFO interrupt at falling edge
+
+ DigitalOut bLed(LED3, LED_ON);
SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // SPI bus, P5_1 = MOSI,
// P5_2 = MISO, P5_0 = SCK
@@ -86,7 +104,7 @@
ecgAFE.writeRegister( MAX30003::SYNCH , 0);
uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status;
- int16_t ecgSample[32];
+ int16_t ecgSample[32]; int8_t x;
//-----------------------------------------------------------------------------------------------//
//bool timerflag = false;
@@ -137,7 +155,7 @@
{
if (pc.readable()) // For nordic - Readiing time
{
- scanf("%s",buf);
+ scanf("%s",buf);
//printf("The entered string is %s : \n ",buf);
packet_1 = atoi(buf); // converting ascii to integer
@@ -206,7 +224,8 @@
else
Channel_Num = 0;
//pc.write((uint8_t *)Channel_Num, sizeof(Channel_Num));
- printf("%6d\r\n", Channel_Num); //Channel no
+ //printf("%6d\r\n", Channel_Num);
+ printf("channel No is %d \n",Channel_Num); //Channel no
onesec_counter_temp = onesec_counter * 2;
data_len_1 = onesec_counter_temp & 0xff;
@@ -241,44 +260,35 @@
// timer_fast.reset();
}
-
- // Read back ECG samples from the FIFO
- else if((ecgFIFOIntFlag==1))// && (timerflag == 0))
- {
+ do {
+ // Read back ECG samples from the FIFO
+ if( ecgFIFOIntFlag) {
+
ecg_1 = 1;
ecgFIFOIntFlag = 0;
status = ecgAFE.readRegister( MAX30003::STATUS ); // Read the STATUS register
// Check if EINT interrupt asserted
- if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK )
- {
+ if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK ) {
- readECGSamples = 0; // Reset sample counter
+ readECGSamples = 0; // Reset sample counter
do {
- ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO
+ ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO
ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data
- ecgSample[readECGSamples] = ((ecgSample[readECGSamples]<<8)&0xFF00)|((ecgSample[readECGSamples]>>8)&0x00FF);
ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG
- readECGSamples++; // Increment sample counter
+ readECGSamples++;
+ // Increment sample counter
// Check that sample is not last sample in FIFO
} while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK ||
ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK );
// Check if FIFO has overflowed
- if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK )
- {
+ if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK ){
ecgAFE.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO
- rLed = 1;//notifies the user that an over flow occured
+ bLed = 1;//notifies the user that an over flow occured
}
- //uint8_t header_ecg_checksum[2] = {'%','%'};
- //pc.write((uint8_t *)header_ecg_checksum, sizeof(header_ecg_checksum));
-
- //pc.write((int16_t *)ecgSample,readECGSamples * sizeof(int16_t ));
- //memcpy(ecgSample_1sec , ecgSample, sizeof(ecgSample));
-
- //memcpy(ecgSample_1sec + (onesec_counter * sizeof(int16_t)), ecgSample, sizeof(ecgSample));
if (flip)
{
@@ -289,23 +299,114 @@
{
sampleps = 13;
// printf("Flipped 13\r\n");
- }
+ }
- for( idx = 0; idx < sampleps; idx++ )
+ // Print results
+ for( idx = 0; idx < readECGSamples; idx++ )
{
- //pc.printf("%6d\r\n", ecgSample[idx]);
+ // pc.printf("%6d\r\n", ecgSample[idx]);
+ ecgSample_1sec[onesec_counter] = ecgSample[idx];
+
+ cksm_1 = ecgSample[idx] & 0xff;
+ cksm_2 = (ecgSample[idx] >> 8) & 0xff;
+ checksum_ += cksm_1 + cksm_2;
+ onesec_counter++;
+ }
+ //rLed = 1;
+ flip =!flip;
+ bLed = ! bLed;
+ x++;
+ //if (x==100)
+ //ecg_config_off(ecgAFE);
+ }
+ }
+ }while(x<50);
+ ecg_config_off(ecgAFE);
+ bLed = ~bLed;
+ x=0;
+
+//--------------------------------------channal 2-----------------------------------------------//
+ InterruptIn ecgFIFO_2_int(P1_5); // Config P5_4 as int. in for the
+ ecgFIFO_2_int.fall(&ecgFIFO_callback_1); // ecg FIFO almost full interrupt
+
+ DigitalOut gLed(LED2, LED_ON);
+
+ SPI spiBus2(P0_5,P0_6,P0_4); // SPI bus, P5_1 = MOSI,
+ // P5_2 = MISO, P5_0 = SCK
+
+ MAX30003 ecgAFE_2(spiBus2, P0_7); // New MAX30003 on spiBus, CS = P5_3
+ ecg_config(ecgAFE_2); // Config ECG
+
+ // uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status;
+ //int16_t ecgSample[32], x = 0;
+
+ ecgAFE_2.writeRegister( MAX30003::SYNCH , 0);
+
+ do {
+ // Read back ECG samples from the FIFO
+ if( ecgFIFOIntFlag_1) {
+
+ ecg_2 = 1;
+ ecgFIFOIntFlag_1 = 0;
+ status = ecgAFE_2.readRegister( MAX30003::STATUS ); // Read the STATUS register
+
+ // Check if EINT interrupt asserted
+ if ( ( status & EINT_STATUS_MASK ) == EINT_STATUS_MASK ) {
+
+ readECGSamples = 0; // Reset sample counter
+
+ do {
+ ecgFIFO = ecgAFE_2.readRegister( MAX30003::ECG_FIFO ); // Read FIFO
+ ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data
+ ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG
+ readECGSamples++;
+ // Increment sample counter
+
+ // Check that sample is not last sample in FIFO
+ } while ( ETAG[readECGSamples-1] == FIFO_VALID_SAMPLE_MASK ||
+ ETAG[readECGSamples-1] == FIFO_FAST_SAMPLE_MASK );
+
+ // Check if FIFO has overflowed
+ if( ETAG[readECGSamples - 1] == FIFO_OVF_MASK ){
+ ecgAFE_2.writeRegister( MAX30003::FIFO_RST , 0); // Reset FIFO
+ gLed = 1;//notifies the user that an over flow occured
+ }
+
+ if (flip)
+ {
+ sampleps = 12;
+ //printf("Flipped 12\r\n");
+ }
+ else
+ {
+ sampleps = 13;
+ // printf("Flipped 13\r\n");
+ }
+
+
+ // Print results
+ for( idx = 0; idx < readECGSamples; idx++ )
+ {
+ //pc.printf("%6d\r\n", ecgSample[idx]);
ecgSample_1sec[onesec_counter] = ecgSample[idx];
cksm_1 = ecgSample[idx] & 0xff;
cksm_2 = (ecgSample[idx] >> 8) & 0xff;
checksum_ += cksm_1 + cksm_2;
- onesec_counter++;
- }
- flip =!flip;
- rLed = ! rLed;
- }
-
+ onesec_counter++;
+
+ }
+ gLed = ! gLed;
+ x++;
+ //if (x==100)
+ //ecg_config_off(ecgAFE);
+ }
}
+ }while(x<50);
+ ecg_config_off(ecgAFE_2);
+ gLed = ~gLed;
+ x=0;
+
}
}
@@ -374,3 +475,16 @@
return;
}
+
+void ecg_config_off(MAX30003& ecgAFE)
+{
+ // General config register setting
+ MAX30003::GeneralConfiguration_u CNFG_GEN_r;
+ CNFG_GEN_r.bits.en_ecg = 0; // Enable ECG channel
+ // CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input
+ // CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input
+ // CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias
+ // CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA
+ // CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection
+ ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all);
+}