Diff: main.cpp

Revision:

0:38c49bc37c7c

Child:

1:86843c27cc81

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Aug 16 22:59:59 2017 +0000
@@ -0,0 +1,135 @@
+#include "mbed.h"
+#include "max32630fthr.h"
+#include "MAX30003.h"
+
+MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
+
+void ecg_config(MAX30003 &ecgAFE);
+
+/* ECG FIFO nearly full callback */
+volatile bool ecgFIFOIntFlag = 0; 
+void ecgFIFO_callback()  {
+    
+    ecgFIFOIntFlag = 1;
+
+}  
+
+int main()
+{
+    DigitalOut rLed(LED1, LED_OFF);
+    DigitalOut gLed(LED2, LED_OFF);
+    DigitalOut bLed(LED3, LED_OFF);
+    
+    Serial pc(USBTX, USBRX);
+    pc.baud(115200);
+    
+    pc.printf("Running.... \r\n\r\n");
+    wait(0.5);
+    
+    SPI spiBus(SPI2_MOSI, SPI2_MISO, SPI2_SCK);
+    
+    MAX30003 *ecgAFE;
+    ecgAFE = new MAX30003(spiBus, P5_3);
+    ecg_config(*ecgAFE);
+    
+    /* Peripehral configuration */
+    InterruptIn ecgFIFO_int(P5_4);          // Config P5_4 as int. in for the ecg FIFO almost full interrupt
+    ecgFIFO_int.fall(&ecgFIFO_callback);    //
+    
+    pc.printf("Config. complete.... \r\n\r\n");
+    wait(0.5);
+    
+    uint32_t ecgFIFO[32];
+    int16_t ecgSample, ETAG;
+    while(1) 
+    {
+        /* Read back ECG samples from the FIFO */
+        if( ecgFIFOIntFlag ) {
+                
+            for( int i = 0; i < 16; i++  ){
+                ecgFIFO[i] = ecgAFE->readRegister( MAX30003::ECG_FIFO );
+                ecgSample = ecgFIFO[i] >> 8;
+                ETAG = ( ecgFIFO[i] >> 3 ) && 0x07;
+                
+                pc.printf("Sample : %5d, \t ETAG : 0x%x \r\n", ecgSample, ETAG);
+            }
+                
+            bLed = !bLed;
+            ecgFIFOIntFlag = 0;     
+                                
+        }
+    }
+}
+
+
+
+
+void ecg_config(MAX30003& ecgAFE) { 
+
+        // Reset ECG to clear registers
+        ecgAFE.writeRegister( MAX30003::SW_RST , 0);
+        
+    
+    
+        // General config register setting
+        MAX30003::GeneralConfiguration_u CNFG_GEN_r;
+        CNFG_GEN_r.bits.en_ecg = 1;
+        CNFG_GEN_r.bits.rbiasn = 1;
+        CNFG_GEN_r.bits.rbiasp = 1;
+        CNFG_GEN_r.bits.en_rbias = 1;
+        CNFG_GEN_r.bits.imag = 2;
+        CNFG_GEN_r.bits.en_dcloff = 1;    
+        ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all);
+    
+    
+    
+        // ECG Config register setting
+        MAX30003::ECGConfiguration_u CNFG_ECG_r;
+        CNFG_ECG_r.bits.dlpf = 1;
+        CNFG_ECG_r.bits.dhpf = 1;
+        CNFG_ECG_r.bits.gain = 3; 
+        CNFG_ECG_r.bits.rate = 3;  
+        ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all);
+        
+    
+    
+        //R-to-R configuration
+        MAX30003::RtoR1Configuration_u CNFG_RTOR_r;
+        CNFG_RTOR_r.bits.en_rtor = 1;    
+        ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all);
+    
+    
+        
+        // Manage interrupts register setting
+        MAX30003::ManageInterrupts_u MNG_INT_r;
+        MNG_INT_r.bits.efit = 0b01111;    
+        ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all);
+    
+
+    
+        // Enable interrupts register setting
+        MAX30003::EnableInterrupts_u EN_INT_r;
+        EN_INT_r.all = 0;
+        EN_INT_r.bits.en_eint = 1;
+        EN_INT_r.bits.intb_type = 0b11;
+        ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all);
+    
+    
+    
+        // Dyanmic modes config
+        MAX30003::ManageDynamicModes_u MNG_DYN_r;
+        MNG_DYN_r.bits.fast = 0;    
+        ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all);
+    
+    
+    
+        // MUX Config
+        MAX30003::MuxConfiguration_u CNFG_MUX_r;
+        CNFG_MUX_r.bits.pol = 0;    
+        ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all);
+
+    
+        ecgAFE.writeRegister( MAX30003::SYNCH , 0);
+    
+}  
+