Diff: main.cpp

Revision:

0:7ee4334a99fc

Child:

1:616a5dd8ec34

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Oct 24 13:20:49 2018 +0000
@@ -0,0 +1,90 @@
+#include "mbed.h"
+#include "FastPWM.h"
+// https://developer.mbed.org/forum/electronics/topic/15346/
+//------------------------------------
+//Emission pgrm for the patient transmetting device. It uses the source code 
+//originally made for Arduino. It has been first designed by S.Sahuguede
+//------------------------------------
+ /* 17.10.2018 sketch modified by Kostiantyn Vasko together with Borys Shtanhei
+ * Transmitting by IR LED with 38kHz Freq FOR STM32
+ * Important pins:
+ * D1 - Tx
+ * D0 - Rx
+ * D10 - PWM
+ * A0 - Analog input for ECG
+ */
+//Serial Com defined for Tx=D8 and Rx=D2 at 4800 bauds
+Serial Serial2(D8,D2,38400); 
+
+//Initializing of clock Output
+FastPWM mypwm(D10,1);
+
+//init variables 
+int cptmesure = 0;
+unsigned int analogin;
+
+//VALUE TO MODIFY BY PATIENT
+unsigned int patient=2;
+
+//creation of variables for transmission control
+int verif;
+
+AnalogIn X(A0);
+
+int main() {
+    //pwm_io(16, 0.5); //26.041 us with a duty cycle of 50% ==> Here I get 38kHz as Output with 16µs...
+    
+    //Bytes variables which gonna be sent
+    unsigned int  trame1,trame2,trame3,trame8, trame9;
+    
+    //Clock settings for 38kHz
+    //mypwm.period_us(26);//26
+   // mypwm.pulsewidth_us(13);//13
+    
+    //Serial Com data sent
+    uint8_t TrameTab[6];    
+    
+    //Clock settings for 455kHz
+    mypwm.period_us(2.1978);
+    mypwm.pulsewidth_us(1.0989);//Duty-Cycle 50% here
+    while(1) 
+    {
+        analogin = (int16_t) (65535 * X.read());// Read ECG signal and transforming into digit.
+          
+        trame2=(analogin & 0xFF00) >> 8;//mask 1111 1111 0000 0000 (ECG signal 16 bit)
+        trame3=(analogin & 0xFF);//mask 0000 0000 1111 1111 
+          
+        //increment of measurement: avoids the redundancy of the display on the server
+        cptmesure++;
+        if(cptmesure==8)
+        {
+            cptmesure=0;
+        }
+          
+        verif =  (trame2 << 3) + cptmesure ; 
+        
+        //first frame: patient + verif (2 bits high)
+        trame1= (patient << 4) + ((verif & 0x700)>>7);//mask 111 0000 0000
+        
+        trame8= (verif & 0xFF);//mask 1111 1111
+        
+        //fifth frame: patient + increment measurement
+        trame9= (patient << 4) + (cptmesure << 1);
+        
+        //We fill the table which gonna be sent
+        TrameTab[0] = 255;  
+        TrameTab[1] = trame1;
+            
+        TrameTab[2] = trame2;   
+        TrameTab[3] = trame3;
+            
+        TrameTab[4] = trame8;
+        TrameTab[5] = trame9;
+        
+        //We sent the table through the serial port
+        Serial2.write(TrameTab,6,0,0);
+        //Serial.write pour envoyer l'information sous 8 bits. Serial.print envoi un nombre chiffre par chiffre à utiliser pour avoir un affichage sur le moniteur.
+        
+        wait(0.0025);
+    }
+}
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