Chad Nachiappan / Mbed 2 deprecated PacemakerController

Part of the Pacemaker Project; this models the Pacemaker.

Dependencies:   mbed TextLCD mbed-rtos

PacemakerController.cpp@13:2a25dd47478e, 2015-11-30 (annotated)

Committer:
lucastai
Date:
Mon Nov 30 20:53:55 2015 +0000
Revision:
13:2a25dd47478e
Parent:
12:ed162e1f7194
Parent:
11:14b15f4604ad
Child:
14:a16b636c2bbc
Child:
16:ae9df4194011
fix conflicts

Who changed what in which revision?

UserRevisionLine numberNew contents of line
chadnach1 0:d92e0b71c6b5 1 #include "mbed.h"
lucastai 2:5e9c4d83d038 2 #include "LPC17xx.h"
lucastai 2:5e9c4d83d038 3 #include "TextLCD.h"
lucastai 2:5e9c4d83d038 4 #include "rtos.h"
lucastai 2:5e9c4d83d038 5 #include "Thread.h"
lucastai 2:5e9c4d83d038 6 using namespace rtos;
chadnach1 0:d92e0b71c6b5 7
lucastai 2:5e9c4d83d038 8
chadnach1 0:d92e0b71c6b5 9 // This is for the pacemaker
lucastai 2:5e9c4d83d038 10 volatile unsigned short timer_count;
lucastai 2:5e9c4d83d038 11 Serial pc(USBTX, USBRX);
lucastai 2:5e9c4d83d038 12 TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD20x4); // rs, e, d4-d7
lucastai 2:5e9c4d83d038 13
mhowar 5:9eee15818b0e 14 int keyboard_needs_numeric = 0; // boolean - is in middle of interval input?
chadnach1 0:d92e0b71c6b5 15
chadnach1 0:d92e0b71c6b5 16 int h_clock;
amiche 3:44d132582373 17 int pm_clock;
amiche 3:44d132582373 18 int avi_clock;
chadnach1 0:d92e0b71c6b5 19
chadnach1 4:f04eb7f96f4b 20 int LRI = 1000;
chadnach1 4:f04eb7f96f4b 21 int AVI = 150;
chadnach1 4:f04eb7f96f4b 22 int PVARP = 300;
chadnach1 4:f04eb7f96f4b 23 int VRP = 200;
lucastai 2:5e9c4d83d038 24
lucastai 2:5e9c4d83d038 25 // constants
lucastai 2:5e9c4d83d038 26 int MAX_PM_RT = 180;
lucastai 2:5e9c4d83d038 27 int MIN_PM_RT = 40;
lucastai 2:5e9c4d83d038 28 enum mode {NORMAL, SLEEP, EXERCISE, MANUAL};
lucastai 2:5e9c4d83d038 29
lucastai 2:5e9c4d83d038 30 // counters
lucastai 2:5e9c4d83d038 31 int beats = 0;
lucastai 2:5e9c4d83d038 32
lucastai 2:5e9c4d83d038 33 // state variables
lucastai 2:5e9c4d83d038 34 int upper_bound = 100;
lucastai 2:5e9c4d83d038 35 int lower_bound = 40;
lucastai 2:5e9c4d83d038 36 int obs_int = 10;
lucastai 2:5e9c4d83d038 37 mode curr_mode = NORMAL;
lucastai 2:5e9c4d83d038 38
lucastai 2:5e9c4d83d038 39
lucastai 2:5e9c4d83d038 40
lucastai 2:5e9c4d83d038 41 // alarms
lucastai 2:5e9c4d83d038 42 DigitalOut Apace(LED1);
lucastai 2:5e9c4d83d038 43 DigitalOut Vpace(LED2);
lucastai 2:5e9c4d83d038 44 DigitalOut Asense(LED3);
lucastai 2:5e9c4d83d038 45 DigitalOut Vsense(LED4);
lucastai 11:14b15f4604ad 46 DigitalOut apace(p22):
lucastai 11:14b15f4604ad 47 DigitalOut vpace(p21):
lucastai 2:5e9c4d83d038 48
lucastai 2:5e9c4d83d038 49 // hardware interrupt handler, adapted from code in piazza post by Dagaen
lucastai 2:5e9c4d83d038 50 extern "C" void TIMER0_IRQHandler (void)
lucastai 2:5e9c4d83d038 51 {
lucastai 2:5e9c4d83d038 52 if((LPC_TIM0->IR & 0x01) == 0x01) // if MR0 interrupt, proceed
lucastai 2:5e9c4d83d038 53 {
lucastai 2:5e9c4d83d038 54 LPC_TIM0->IR |= 1 << 0; // Clear MR0 interrupt flag
lucastai 2:5e9c4d83d038 55 timer_count++; //increment timer_count
lucastai 2:5e9c4d83d038 56 }
lucastai 2:5e9c4d83d038 57 }
lucastai 2:5e9c4d83d038 58
lucastai 2:5e9c4d83d038 59 // init the hardware interrupt (timer0), adapted same as above
lucastai 2:5e9c4d83d038 60 void timer0_init(void)
lucastai 2:5e9c4d83d038 61 {
lucastai 2:5e9c4d83d038 62 LPC_SC->PCONP |=1<1; //timer0 power on
lucastai 2:5e9c4d83d038 63 LPC_SC-> PCLKSEL0 |= 1 << 2; // set timer clock to CCLCK nondivided (1 clock cycle = 1 increment)
lucastai 2:5e9c4d83d038 64 LPC_TIM0->MR0 = 1000000; //100mhz clock cycle, 1 cycle = 10ns, 10ms = 10 000 000 ns = 1M cycles
lucastai 2:5e9c4d83d038 65 LPC_TIM0->MCR = 3; //interrupt and reset control
lucastai 2:5e9c4d83d038 66 //3 = Interrupt & reset timer0 on match (111) sets all three bits
lucastai 2:5e9c4d83d038 67 NVIC_EnableIRQ(TIMER0_IRQn); //enable timer0 interrupt
chadnach1 0:d92e0b71c6b5 68 }
chadnach1 0:d92e0b71c6b5 69
lucastai 2:5e9c4d83d038 70
lucastai 2:5e9c4d83d038 71 void PM_ALARM(void const *argument){
lucastai 2:5e9c4d83d038 72
lucastai 2:5e9c4d83d038 73 // min hr alarm
lucastai 2:5e9c4d83d038 74 if( beats < MIN_PM_RT){
lucastai 2:5e9c4d83d038 75 lcd.locate(0,1);
lucastai 2:5e9c4d83d038 76 lcd.printf("!<");
lucastai 2:5e9c4d83d038 77 }
lucastai 2:5e9c4d83d038 78
lucastai 2:5e9c4d83d038 79 // max hr alarm
lucastai 2:5e9c4d83d038 80 if(beats > MAX_PM_RT){
lucastai 2:5e9c4d83d038 81 lcd.locate(0,1);
lucastai 2:5e9c4d83d038 82 lcd.printf("!>");
lucastai 2:5e9c4d83d038 83 }
chadnach1 0:d92e0b71c6b5 84
chadnach1 0:d92e0b71c6b5 85 }
chadnach1 0:d92e0b71c6b5 86
lucastai 2:5e9c4d83d038 87 // hw interrupt callback, deal with the keyboard input from PC
mhowar 5:9eee15818b0e 88 void keyboard_handler() {
lucastai 2:5e9c4d83d038 89
lucastai 2:5e9c4d83d038 90 // get the char, put it on the PC command line
lucastai 2:5e9c4d83d038 91 char a = pc.getc();
lucastai 2:5e9c4d83d038 92
mhowar 5:9eee15818b0e 93 if (keyboard_needs_numeric) {
mhowar 5:9eee15818b0e 94 if (a >= '0' && a <= '9') {
mhowar 5:9eee15818b0e 95 // update observation interval
mhowar 9:fd8477284185 96 obs_int = (a - '0' + 1) * 5;
mhowar 5:9eee15818b0e 97 } else {
mhowar 5:9eee15818b0e 98 pc.printf("Expected numeric key\n");
mhowar 5:9eee15818b0e 99 }
mhowar 5:9eee15818b0e 100 } else if(a == 'N'){
mhowar 5:9eee15818b0e 101 // if the char is N, update bounds to normal mode
lucastai 2:5e9c4d83d038 102 curr_mode = NORMAL;
lucastai 2:5e9c4d83d038 103 upper_bound = 100;
lucastai 2:5e9c4d83d038 104 lower_bound = 40;
lucastai 2:5e9c4d83d038 105 pc.printf("MODE IS N\n");
lucastai 2:5e9c4d83d038 106 // if the char is S, set bounds to sleep
lucastai 2:5e9c4d83d038 107 }else if (a == 'S'){
lucastai 2:5e9c4d83d038 108 curr_mode = SLEEP;
lucastai 2:5e9c4d83d038 109 upper_bound = 60;
lucastai 2:5e9c4d83d038 110 lower_bound = 30;
lucastai 2:5e9c4d83d038 111 pc.printf("MODE IS S\n");
lucastai 2:5e9c4d83d038 112 // if the char is E, set bounds to exercise
lucastai 2:5e9c4d83d038 113 }else if (a == 'E'){
lucastai 2:5e9c4d83d038 114 curr_mode = EXERCISE;
lucastai 2:5e9c4d83d038 115 upper_bound = 175;
lucastai 2:5e9c4d83d038 116 lower_bound = 100;
lucastai 2:5e9c4d83d038 117 pc.printf("MODE IS E\n");
lucastai 2:5e9c4d83d038 118 beats = 2;
lucastai 2:5e9c4d83d038 119 // if the char is M, set to manual
lucastai 2:5e9c4d83d038 120 }else if (a == 'M'){
lucastai 2:5e9c4d83d038 121 curr_mode = MANUAL;
lucastai 2:5e9c4d83d038 122 upper_bound = 175;
lucastai 2:5e9c4d83d038 123 lower_bound = 30;
lucastai 2:5e9c4d83d038 124 beats = 300;
lucastai 2:5e9c4d83d038 125 pc.printf("MODE IS MANUAL\n");
lucastai 2:5e9c4d83d038 126 // check for A if mode is manual
lucastai 2:5e9c4d83d038 127 }else if (a == 'A'){
lucastai 2:5e9c4d83d038 128 if(curr_mode == MANUAL){
lucastai 2:5e9c4d83d038 129 pc.printf("MODE IS MANUAL GOT APACE\n");
lucastai 2:5e9c4d83d038 130 }
lucastai 2:5e9c4d83d038 131 // check for V is mode is manual
lucastai 2:5e9c4d83d038 132 }else if (a == 'V'){
lucastai 2:5e9c4d83d038 133 if(curr_mode == MANUAL){
lucastai 2:5e9c4d83d038 134 pc.printf("MODE IS MANUAL GOT VPACE\n");
lucastai 2:5e9c4d83d038 135 }
mhowar 5:9eee15818b0e 136 }else if (a == 'O'){
mhowar 5:9eee15818b0e 137 keyboard_needs_numeric = 1;
mhowar 5:9eee15818b0e 138 } else{
lucastai 2:5e9c4d83d038 139 // do nothing for invalid char
lucastai 2:5e9c4d83d038 140 }
lucastai 2:5e9c4d83d038 141
lucastai 2:5e9c4d83d038 142
lucastai 2:5e9c4d83d038 143 }
lucastai 2:5e9c4d83d038 144
amiche 3:44d132582373 145 void pm_sense() {
chadnach1 4:f04eb7f96f4b 146
chadnach1 4:f04eb7f96f4b 147 while(1) {
chadnach1 4:f04eb7f96f4b 148
chadnach1 4:f04eb7f96f4b 149 if (timer_count >= VRP) {
chadnach1 4:f04eb7f96f4b 150 //wait for Vget;
chadnach1 4:f04eb7f96f4b 151 timer_count = 0;
chadnach1 4:f04eb7f96f4b 152 // do something with Vsense!
chadnach1 4:f04eb7f96f4b 153 } else if (timer_count < VRP) {
chadnach1 4:f04eb7f96f4b 154 // wait for Vget
chadnach1 4:f04eb7f96f4b 155 }
chadnach1 4:f04eb7f96f4b 156
chadnach1 4:f04eb7f96f4b 157 if (timer_count < PVARP) {
chadnach1 4:f04eb7f96f4b 158 // wait for Aget?
chadnach1 4:f04eb7f96f4b 159 } else if (timer_count >= PVARP) {
chadnach1 4:f04eb7f96f4b 160 // wait for Aget?
chadnach1 4:f04eb7f96f4b 161 // do something with Asense!
chadnach1 4:f04eb7f96f4b 162 }
chadnach1 4:f04eb7f96f4b 163
chadnach1 4:f04eb7f96f4b 164 }
amiche 3:44d132582373 165 }
amiche 3:44d132582373 166
amiche 3:44d132582373 167 void pm_response() {
chadnach1 4:f04eb7f96f4b 168
chadnach1 4:f04eb7f96f4b 169 while(1) {
chadnach1 4:f04eb7f96f4b 170 if (timer_count >= LRI-AVI) {
chadnach1 4:f04eb7f96f4b 171 // PM_A!
chadnach1 4:f04eb7f96f4b 172 // avi_clk = 0
chadnach1 4:f04eb7f96f4b 173 //apace();
chadnach1 7:af6c040f0421 174 } else if (timer_count < LRI - AVI) {
chadnach1 7:af6c040f0421 175 // avi_clk = 0
chadnach1 7:af6c040f0421 176 // wait for Asense?
chadnach1 7:af6c040f0421 177 }
chadnach1 7:af6c040f0421 178
chadnach1 7:af6c040f0421 179 // At Atrial Event State
chadnach1 7:af6c040f0421 180
chadnach1 7:af6c040f0421 181 //while (avi_clk < AVI);
chadnach1 7:af6c040f0421 182
chadnach1 7:af6c040f0421 183 // Ventricular Event
chadnach1 7:af6c040f0421 184 timer_count = 0;
chadnach1 7:af6c040f0421 185 // PM_V!
chadnach1 7:af6c040f0421 186 timer_count = 0;
chadnach1 7:af6c040f0421 187 // VPace!
chadnach1 7:af6c040f0421 188
chadnach1 7:af6c040f0421 189
chadnach1 4:f04eb7f96f4b 190 }
amiche 3:44d132582373 191 }
lucastai 2:5e9c4d83d038 192
lucastai 2:5e9c4d83d038 193
lucastai 2:5e9c4d83d038 194 void apace() {
lucastai 11:14b15f4604ad 195 apace = 1;
lucastai 11:14b15f4604ad 196 Thread::wait(10);
lucastai 11:14b15f4604ad 197 apace = 0;
lucastai 13:2a25dd47478e 198
lucastai 2:5e9c4d83d038 199 }
lucastai 2:5e9c4d83d038 200
lucastai 2:5e9c4d83d038 201 void vpace() {
lucastai 11:14b15f4604ad 202 vpace = 1;
lucastai 11:14b15f4604ad 203 Thread::wait(10);
lucastai 11:14b15f4604ad 204 vpace = 0;
chadnach1 0:d92e0b71c6b5 205 }
chadnach1 0:d92e0b71c6b5 206
amiche 3:44d132582373 207
chadnach1 0:d92e0b71c6b5 208 int main() {
mhowar 5:9eee15818b0e 209 https://developer.mbed.org/users/chadnach1/code/PacemakerController/
lucastai 2:5e9c4d83d038 210 // connect the serial device (PC keybd) to the interrupt
mhowar 5:9eee15818b0e 211 pc.attach(&keyboard_handler);
lucastai 2:5e9c4d83d038 212
amiche 3:44d132582373 213 Thread t3(pm_sense);
amiche 3:44d132582373 214 Thread t4(pm_response);
amiche 3:44d132582373 215
amiche 3:44d132582373 216 Thread t2(PM_ALARM);
amiche 3:44d132582373 217 Thread t5();
amiche 3:44d132582373 218
chadnach1 0:d92e0b71c6b5 219 }