Diff: main.cpp

Revision:

2:812d40f1853d

Parent:

1:86843c27cc81

Child:

3:420d5efbd967

--- a/main.cpp	Thu Aug 17 19:56:40 2017 +0000
+++ b/main.cpp	Fri Aug 18 17:37:07 2017 +0000
@@ -36,35 +36,52 @@
     
     ecgAFE->writeRegister( MAX30003::SYNCH , 0);
     
-    uint32_t ecgFIFO, readSamples, idx, ETAG[32];
+    uint32_t ecgFIFO, readSamples, idx, ETAG[32], status, RtoR;
     int16_t ecgSample[32];
+    float BPM;
+    
     while(1) {
         
         bLed = LED_ON;
         
         /* Read back ECG samples from the FIFO */
         if( ecgFIFOIntFlag ) {
-            pc.printf("Interrupt received....\r\n\r\n");
+            pc.printf("Interrupt received....\r\n");
             bLed = LED_OFF;
-            ecgFIFOIntFlag = 0;         // Clear interrupt flag
-            readSamples = 0;            // Reset sample counter
-            do {
-                ecgFIFO = ecgAFE->readRegister( MAX30003::ECG_FIFO );   // Read FIFO
-                ecgSample[readSamples] = ecgFIFO >> 8;                  // Isolate voltage data
-                ETAG[readSamples] = ( ecgFIFO >> 3 ) & 0b111;           // Isolate ETAG
-                readSamples++;                                          // Increment sample counter
-            } while ( ETAG[readSamples-1] == 0x0 || ETAG[readSamples-1] == 0x1 );   // Check that sample is valid
+                     // Clear interrupt flag
+            
+            status = ecgAFE->readRegister( MAX30003::STATUS );
+            pc.printf("Status : 0x%x\r\nCurrent BPM is %f\r\n\r\n", status, BPM);
+            
             
-            pc.printf("%d samples read from FIFO \r\n", readSamples);
+            if( ( status & (1<<10) ) == (1<<10) ){
+                ecgFIFOIntFlag = 0;
+                pc.printf("R-to-R Interrupt \r\n");
+                RtoR = ecgAFE->readRegister( MAX30003::RTOR );
+                BPM = 60.0*RtoR/32768.0;
+                pc.printf("RtoR : %d\r\n\r\n", RtoR);
+            } 
+             
+            if ( ( status & (1<<23) ) == (1<<23) ) {
+                ecgFIFOIntFlag = 0;
+                pc.printf("FIFO Interrupt \r\n");
+                readSamples = 0;            // Reset sample counter
+                do {
+                    ecgFIFO = ecgAFE->readRegister( MAX30003::ECG_FIFO );   // Read FIFO
+                    ecgSample[readSamples] = ecgFIFO >> 8;                  // Isolate voltage data
+                    ETAG[readSamples] = ( ecgFIFO >> 3 ) & 0b111;           // Isolate ETAG
+                    readSamples++;                                          // Increment sample counter
+                } while ( ETAG[readSamples-1] == 0x0 || ETAG[readSamples-1] == 0x1 );   // Check that sample is valid
             
-            for( idx = 0; idx < readSamples; idx++ ) {
-                pc.printf("Sample : %6d, \tETAG : 0x%x\r\n", ecgSample[idx], ETAG[idx]);           
+                pc.printf("%d samples read from FIFO \r\n", readSamples);
+                
+                for( idx = 0; idx < readSamples; idx++ ) {
+                    pc.printf("Sample : %6d, \tETAG : 0x%x\r\n", ecgSample[idx], ETAG[idx]);           
+                }
+                pc.printf("\r\n\r\n\r\n");                          
             }
-            
-            pc.printf("\r\n\r\n\r\n");                          
-            
+        
         }
-        
     }
 }
 
@@ -106,7 +123,8 @@
         
     //Manage interrupts register setting
     MAX30003::ManageInterrupts_u MNG_INT_r;
-    MNG_INT_r.bits.efit = 0b00011;    
+    MNG_INT_r.bits.efit = 0b00011;   
+    MNG_INT_r.bits.clr_rrint = 0b01;
     ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all);
     
     
@@ -114,6 +132,7 @@
     MAX30003::EnableInterrupts_u EN_INT_r;
     EN_INT_r.all = 0;
     EN_INT_r.bits.en_eint = 1;
+    EN_INT_r.bits.en_rrint = 1;
     EN_INT_r.bits.intb_type = 0b11;
     ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all);