Rohit Dureja / Mbed 2 deprecated Pacemaker

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Dependencies:   mbed

pacemaker.cpp@1:c6b87b3cc7af, 2013-11-25 (annotated)

Committer:
rohitdureja
Date:
Mon Nov 25 03:02:33 2013 +0000
Revision:
1:c6b87b3cc7af
Parent:
main.cpp@0:2196b652345b
Child:
2:f6066ec3c8bc
Working DDD Model

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rohitdureja 0:2196b652345b 1 #include "mbed.h"
rohitdureja 0:2196b652345b 2
rohitdureja 1:c6b87b3cc7af 3 //Enable serial communication
rohitdureja 1:c6b87b3cc7af 4 Serial pc(USBTX, USBRX); // tx, rx
rohitdureja 1:c6b87b3cc7af 5
rohitdureja 1:c6b87b3cc7af 6 //Timers used to model the pacemaker
rohitdureja 1:c6b87b3cc7af 7 Timeout AVI;
rohitdureja 1:c6b87b3cc7af 8 Timeout PVARP;
rohitdureja 1:c6b87b3cc7af 9 Timeout LRI;
rohitdureja 1:c6b87b3cc7af 10
rohitdureja 1:c6b87b3cc7af 11 //Pins used to communicate with the heart, P9 is AP, P10 is VP, P11 is AS and P12 is VS
rohitdureja 1:c6b87b3cc7af 12 DigitalOut pinAP(p9);
rohitdureja 1:c6b87b3cc7af 13 DigitalOut pinVP(p10);
rohitdureja 1:c6b87b3cc7af 14 InterruptIn pinAS(p11);
rohitdureja 1:c6b87b3cc7af 15 InterruptIn pinVS(p12);
rohitdureja 1:c6b87b3cc7af 16
rohitdureja 1:c6b87b3cc7af 17 //Reference LEDs
rohitdureja 1:c6b87b3cc7af 18 DigitalOut vs(LED1);
rohitdureja 1:c6b87b3cc7af 19 DigitalOut vp(LED2);
rohitdureja 1:c6b87b3cc7af 20 DigitalOut as(LED3);
rohitdureja 1:c6b87b3cc7af 21 DigitalOut ap(LED4);
rohitdureja 1:c6b87b3cc7af 22
rohitdureja 1:c6b87b3cc7af 23 //Pacemaker values in seconds;
rohitdureja 1:c6b87b3cc7af 24 float lri = 1.0;
rohitdureja 1:c6b87b3cc7af 25 float pvarp = 0.3;
rohitdureja 1:c6b87b3cc7af 26 float vrp = 0.2;
rohitdureja 1:c6b87b3cc7af 27 float pvab = 0.05;
rohitdureja 1:c6b87b3cc7af 28 float pavb = 0.05;
rohitdureja 1:c6b87b3cc7af 29 float avi = 0.15;
rohitdureja 1:c6b87b3cc7af 30
rohitdureja 1:c6b87b3cc7af 31 //Initial states
rohitdureja 1:c6b87b3cc7af 32 int vsValid = 1;
rohitdureja 1:c6b87b3cc7af 33 int asValid = 1;
rohitdureja 1:c6b87b3cc7af 34
rohitdureja 1:c6b87b3cc7af 35 //Interrupt function prototypes
rohitdureja 1:c6b87b3cc7af 36 void ASReceivedOrAPSent();
rohitdureja 1:c6b87b3cc7af 37 void VSReceviedOrVPSent();
rohitdureja 1:c6b87b3cc7af 38 void noVentricleEvent();
rohitdureja 1:c6b87b3cc7af 39 void noAtrialEvent();
rohitdureja 1:c6b87b3cc7af 40 void postPVARP();
rohitdureja 1:c6b87b3cc7af 41 void blinkled();
rohitdureja 1:c6b87b3cc7af 42
rohitdureja 1:c6b87b3cc7af 43 //Interrupt routines for all pacemaker states
rohitdureja 1:c6b87b3cc7af 44
rohitdureja 1:c6b87b3cc7af 45 //Interrupt routine to handle atrial event
rohitdureja 1:c6b87b3cc7af 46 void ASReceivedOrAPSent() {
rohitdureja 1:c6b87b3cc7af 47 if(asValid==1) {
rohitdureja 1:c6b87b3cc7af 48 /*as = 1;
rohitdureja 1:c6b87b3cc7af 49 wait(0.2);
rohitdureja 1:c6b87b3cc7af 50 as = 0;*/
rohitdureja 1:c6b87b3cc7af 51 //Disable the LRI timer as a AS has been received
rohitdureja 1:c6b87b3cc7af 52 LRI.detach();
rohitdureja 1:c6b87b3cc7af 53 //Disable the PVARP timer as a AS has been recieved
rohitdureja 1:c6b87b3cc7af 54 PVARP.detach();
rohitdureja 1:c6b87b3cc7af 55 //Make asValid=0 and vsValid=0
rohitdureja 1:c6b87b3cc7af 56 asValid = 0;
rohitdureja 1:c6b87b3cc7af 57 vsValid = 0;
rohitdureja 1:c6b87b3cc7af 58 //Set up timer to interrupt at AVI and call noVentricleEvent if no ventricular event comes
rohitdureja 1:c6b87b3cc7af 59 AVI.attach(&noVentricleEvent, avi);
rohitdureja 1:c6b87b3cc7af 60 //Wait for PAVB and disable all interrupts
rohitdureja 1:c6b87b3cc7af 61 __disable_irq();
rohitdureja 1:c6b87b3cc7af 62 wait(pavb);
rohitdureja 1:c6b87b3cc7af 63 //After waiting for PAVB enable interrupts and make asValid=0 and vsValid=1
rohitdureja 1:c6b87b3cc7af 64 __enable_irq();
rohitdureja 1:c6b87b3cc7af 65 asValid = 0;
rohitdureja 1:c6b87b3cc7af 66 vsValid = 1;
rohitdureja 1:c6b87b3cc7af 67 }
rohitdureja 1:c6b87b3cc7af 68 }
rohitdureja 1:c6b87b3cc7af 69
rohitdureja 1:c6b87b3cc7af 70 //Interrupt routine to handle atrial event
rohitdureja 1:c6b87b3cc7af 71 void VSReceivedOrVPSent() {
rohitdureja 1:c6b87b3cc7af 72 if(vsValid==1) {
rohitdureja 1:c6b87b3cc7af 73 /*vs = 1;
rohitdureja 1:c6b87b3cc7af 74 wait(0.2);
rohitdureja 1:c6b87b3cc7af 75 vs = 0;*/
rohitdureja 1:c6b87b3cc7af 76 //Disable the AVI timer as VS has been recieved.
rohitdureja 1:c6b87b3cc7af 77 AVI.detach();
rohitdureja 1:c6b87b3cc7af 78 asValid = 0;
rohitdureja 1:c6b87b3cc7af 79 vsValid = 0;
rohitdureja 1:c6b87b3cc7af 80 //Set up timer to interrupt at PVARP
rohitdureja 1:c6b87b3cc7af 81 PVARP.attach(&postPVARP, pvarp);
rohitdureja 1:c6b87b3cc7af 82 //Set up timer to interrupt at LRI-AVI
rohitdureja 1:c6b87b3cc7af 83 LRI.attach(&noAtrialEvent, lri-avi);
rohitdureja 1:c6b87b3cc7af 84 //Wait for VRP and disable all interrupts
rohitdureja 1:c6b87b3cc7af 85 __disable_irq();
rohitdureja 1:c6b87b3cc7af 86 wait(vrp);
rohitdureja 1:c6b87b3cc7af 87 //After waiting for VRP enable interrupts make asValid = 0 and vsValid = 1
rohitdureja 1:c6b87b3cc7af 88 __enable_irq();
rohitdureja 1:c6b87b3cc7af 89 asValid = 0;
rohitdureja 1:c6b87b3cc7af 90 vsValid = 1;
rohitdureja 1:c6b87b3cc7af 91 }
rohitdureja 1:c6b87b3cc7af 92 }
rohitdureja 1:c6b87b3cc7af 93
rohitdureja 1:c6b87b3cc7af 94 //Interrupt routine to handle post AVI scenario when no VS is receieved
rohitdureja 1:c6b87b3cc7af 95 void noVentricleEvent() {
rohitdureja 1:c6b87b3cc7af 96 //Pace heart now, ventricle!
rohitdureja 1:c6b87b3cc7af 97 pinVP = 1;
rohitdureja 1:c6b87b3cc7af 98 wait(0.01);
rohitdureja 1:c6b87b3cc7af 99 pinVP = 0;
rohitdureja 1:c6b87b3cc7af 100 //Call VSReceiedOrVPSent()
rohitdureja 1:c6b87b3cc7af 101 VSReceivedOrVPSent();
rohitdureja 1:c6b87b3cc7af 102 }
rohitdureja 1:c6b87b3cc7af 103
rohitdureja 1:c6b87b3cc7af 104 //Interrupt routine to hande scenario when no AS or VS is recevied till PVARP
rohitdureja 1:c6b87b3cc7af 105 void postPVARP() {
rohitdureja 1:c6b87b3cc7af 106 vsValid = 1;
rohitdureja 1:c6b87b3cc7af 107 asValid = 1;
rohitdureja 1:c6b87b3cc7af 108 }
rohitdureja 1:c6b87b3cc7af 109
rohitdureja 1:c6b87b3cc7af 110
rohitdureja 1:c6b87b3cc7af 111 //Interruot routine to handle scenarios when there is no Atrial event
rohitdureja 1:c6b87b3cc7af 112 void noAtrialEvent() {
rohitdureja 1:c6b87b3cc7af 113 //Pace heart now, atrial!
rohitdureja 1:c6b87b3cc7af 114 pinAP = 1;
rohitdureja 1:c6b87b3cc7af 115 wait(0.01);
rohitdureja 1:c6b87b3cc7af 116 pinAP = 0;
rohitdureja 1:c6b87b3cc7af 117 ASReceivedOrAPSent();
rohitdureja 1:c6b87b3cc7af 118 }
rohitdureja 1:c6b87b3cc7af 119
rohitdureja 1:c6b87b3cc7af 120 /*void blinkled() {
rohitdureja 1:c6b87b3cc7af 121 vs=1;
rohitdureja 1:c6b87b3cc7af 122 wait(0.2);
rohitdureja 1:c6b87b3cc7af 123 vs=0;
rohitdureja 1:c6b87b3cc7af 124 }*/
rohitdureja 0:2196b652345b 125
rohitdureja 0:2196b652345b 126 int main() {
rohitdureja 1:c6b87b3cc7af 127 //Pins used to communicate with the heart
rohitdureja 1:c6b87b3cc7af 128 //P11 is AS and P12 is VS
rohitdureja 1:c6b87b3cc7af 129 pinAS.rise(&ASReceivedOrAPSent);
rohitdureja 1:c6b87b3cc7af 130 pinVS.rise(&VSReceivedOrVPSent);
rohitdureja 1:c6b87b3cc7af 131 __enable_irq();
rohitdureja 0:2196b652345b 132 while(1) {
rohitdureja 0:2196b652345b 133 }
rohitdureja 0:2196b652345b 134 }