Diff: main.cpp

Revision:

10:3709e8f3d089

Parent:

9:24ecf16eab0f

Child:

11:1d4ecbca034e

--- a/main.cpp	Wed Aug 19 19:38:17 2020 +0000
+++ b/main.cpp	Wed Apr 21 23:14:23 2021 +0000
@@ -1,48 +1,42 @@
-
-#include "MAX30003.h"
 #include "mbed.h"
 #include "max32630fthr.h"
-#include "ds1307.h"
-
-Timer timer_fast;
+#include "MAX30003.h"
+ 
 MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
-
-void task_fast(void);
-DigitalOut ledA(LED2);
+ 
 void ecg_config(MAX30003 &ecgAFE);
-
+ 
+/* ECG FIFO nearly full callback */
 volatile bool ecgFIFOIntFlag = 0; 
-volatile int16_t onesec_counter = 0;
-volatile bool timerflag = 0;
-void ecgFIFO_callback_1()  { // Triggered when the ECG FIFO is about to be full
+void ecgFIFO_callback()  {
     
     ecgFIFOIntFlag = 1;
-
+ 
 }  
-
+ 
 int main()
 {   
-
+ 
     // Constants
     const int EINT_STATUS_MASK =  1 << 23;
     const int FIFO_OVF_MASK =  0x7;
     const int FIFO_VALID_SAMPLE_MASK =  0x0;
     const int FIFO_FAST_SAMPLE_MASK =  0x1;
     const int ETAG_BITS_MASK = 0x7;
-    timer_fast.start();
-    DigitalOut rLed(LED1, LED_OFF);
     
-    Serial pc(USBTX, USBRX);            // Use USB debug probe for serial link
-    pc.baud(115200);                    // Baud rate = 115200
+    // Ports and serial connections
+    Serial pc(P3_1,P3_0);            // Use USB debug probe for serial link
+    pc.baud(230400);                    // Baud rate = 115200
+    
+    DigitalOut bLed(LED3, LED_ON);      // Debug LEDs
     
     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 almost full interrupt
     
     SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK);     // SPI bus, P5_1 = MOSI, 
                                                     // P5_2 = MISO, P5_0 = SCK
     
     MAX30003 ecgAFE(spiBus, P5_3);          // New MAX30003 on spiBus, CS = P5_3 
-    
     ecg_config(ecgAFE);                    // Config ECG 
      
     
@@ -50,41 +44,17 @@
     
     uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status;
     int16_t ecgSample[32];
-    //bool timerflag = false;
-    int16_t ecgSample_1sec[700];
-   int16_t onesec_counter = 0;
-    int16_t sample = 300;
     
-    while(1) 
-    {
-    
-    if (timer_fast.read() > 1) 
-    {
-      //timerflag = 1;
-     ledA = !ledA;
-      timer_fast.reset();
-      int8_t header_device_id[3] = {0,0,210};
-      int8_t header_packet_type[2] = {0,2};
-      int8_t header_packet_id[4] = {0,0,0,0};
-      int8_t header_ecg_datalen[2] = {0,onesec_counter};
-      int8_t header_ecg_checksum[2] = {0,0};
-      
-      
-      //pc.printf("%6d\r\n", sample);
-      //pc.printf("%6d\r\n", onesec_counter);
-      
-      onesec_counter = 0;
-       } 
+    while(1) {
+        
         // Read back ECG samples from the FIFO 
-        else if( (ecgFIFOIntFlag==1))// && (timerflag == 0)) 
-        {
+        if( ecgFIFOIntFlag ) {
             
             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
                 
@@ -99,45 +69,27 @@
                           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
                 }
                 
                 // Print results 
-                for( idx = 0; idx < readECGSamples; idx++ ) 
-                {
-                    //pc.printf("%6d\r\n", ecgSample[idx]);     
-                    ecgSample_1sec[onesec_counter] = ecgSample[idx];
-                    onesec_counter++;      
+                for( idx = 0; idx < readECGSamples; idx++ ) {
+                    pc.printf("%6d\r\n", ecgSample[idx]);           
                 } 
+                bLed = ! bLed;
                                
             }
-        //    else
-          //  {
-            //    timerflag = 0;
-              //  }
-            //else if (timerflag == 1)
-            //{
-                //timerflag = 0;
-                //pc.printf("1 sec ends :\n");
-                //onesec_counter = 0;
-                //timer_fast.reset();
-                //timer_fast.start();
-                //delete[] ecgSample_1sec;
-                //}
-              
-            
         }
     }
 }
-
-
-
-
+ 
+ 
+ 
+ 
 void ecg_config(MAX30003& ecgAFE) { 
-
+ 
     // Reset ECG to clear registers
     ecgAFE.writeRegister( MAX30003::SW_RST , 0);
     
@@ -195,5 +147,4 @@
     ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all);
        
     return;
-}  
-
+}  
\ No newline at end of file