Chad Nachiappan / Mbed 2 deprecated PacemakerController

Part of the Pacemaker Project; this models the Pacemaker.

Dependencies:   mbed TextLCD mbed-rtos

PacemakerController.cpp@5:9eee15818b0e, 2015-11-30 (annotated)

Committer:
mhowar
Date:
Mon Nov 30 03:36:04 2015 +0000
Revision:
5:9eee15818b0e
Parent:
3:44d132582373
Child:
6:d9c0ce333d71
Added observation interval updating

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
amiche 3:44d132582373 20 int LRI = 1000
amiche 3:44d132582373 21 int AVI = 150
amiche 3:44d132582373 22 int PVARP = 300
amiche 3:44d132582373 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 2:5e9c4d83d038 46
lucastai 2:5e9c4d83d038 47 // hardware interrupt handler, adapted from code in piazza post by Dagaen
lucastai 2:5e9c4d83d038 48 extern "C" void TIMER0_IRQHandler (void)
lucastai 2:5e9c4d83d038 49 {
lucastai 2:5e9c4d83d038 50 if((LPC_TIM0->IR & 0x01) == 0x01) // if MR0 interrupt, proceed
lucastai 2:5e9c4d83d038 51 {
lucastai 2:5e9c4d83d038 52 LPC_TIM0->IR |= 1 << 0; // Clear MR0 interrupt flag
lucastai 2:5e9c4d83d038 53 timer_count++; //increment timer_count
lucastai 2:5e9c4d83d038 54 }
lucastai 2:5e9c4d83d038 55 }
lucastai 2:5e9c4d83d038 56
lucastai 2:5e9c4d83d038 57 // init the hardware interrupt (timer0), adapted same as above
lucastai 2:5e9c4d83d038 58 void timer0_init(void)
lucastai 2:5e9c4d83d038 59 {
lucastai 2:5e9c4d83d038 60 LPC_SC->PCONP |=1<1; //timer0 power on
lucastai 2:5e9c4d83d038 61 LPC_SC-> PCLKSEL0 |= 1 << 2; // set timer clock to CCLCK nondivided (1 clock cycle = 1 increment)
lucastai 2:5e9c4d83d038 62 LPC_TIM0->MR0 = 1000000; //100mhz clock cycle, 1 cycle = 10ns, 10ms = 10 000 000 ns = 1M cycles
lucastai 2:5e9c4d83d038 63 LPC_TIM0->MCR = 3; //interrupt and reset control
lucastai 2:5e9c4d83d038 64 //3 = Interrupt & reset timer0 on match (111) sets all three bits
lucastai 2:5e9c4d83d038 65 NVIC_EnableIRQ(TIMER0_IRQn); //enable timer0 interrupt
chadnach1 0:d92e0b71c6b5 66 }
chadnach1 0:d92e0b71c6b5 67
lucastai 2:5e9c4d83d038 68
lucastai 2:5e9c4d83d038 69 void PM_ALARM(void const *argument){
lucastai 2:5e9c4d83d038 70
lucastai 2:5e9c4d83d038 71 // min hr alarm
lucastai 2:5e9c4d83d038 72 if( beats < MIN_PM_RT){
lucastai 2:5e9c4d83d038 73 lcd.locate(0,1);
lucastai 2:5e9c4d83d038 74 lcd.printf("!<");
lucastai 2:5e9c4d83d038 75 }
lucastai 2:5e9c4d83d038 76
lucastai 2:5e9c4d83d038 77 // max hr alarm
lucastai 2:5e9c4d83d038 78 if(beats > MAX_PM_RT){
lucastai 2:5e9c4d83d038 79 lcd.locate(0,1);
lucastai 2:5e9c4d83d038 80 lcd.printf("!>");
lucastai 2:5e9c4d83d038 81 }
chadnach1 0:d92e0b71c6b5 82
chadnach1 0:d92e0b71c6b5 83 }
chadnach1 0:d92e0b71c6b5 84
lucastai 2:5e9c4d83d038 85 // hw interrupt callback, deal with the keyboard input from PC
mhowar 5:9eee15818b0e 86 void keyboard_handler() {
lucastai 2:5e9c4d83d038 87
lucastai 2:5e9c4d83d038 88 // get the char, put it on the PC command line
lucastai 2:5e9c4d83d038 89 char a = pc.getc();
lucastai 2:5e9c4d83d038 90
mhowar 5:9eee15818b0e 91 if (keyboard_needs_numeric) {
mhowar 5:9eee15818b0e 92 if (a >= '0' && a <= '9') {
mhowar 5:9eee15818b0e 93 // update observation interval
mhowar 5:9eee15818b0e 94 obs_int = (a - '0') * 5;
mhowar 5:9eee15818b0e 95 } else {
mhowar 5:9eee15818b0e 96 pc.printf("Expected numeric key\n");
mhowar 5:9eee15818b0e 97 }
mhowar 5:9eee15818b0e 98 } else if(a == 'N'){
mhowar 5:9eee15818b0e 99 // if the char is N, update bounds to normal mode
lucastai 2:5e9c4d83d038 100 curr_mode = NORMAL;
lucastai 2:5e9c4d83d038 101 upper_bound = 100;
lucastai 2:5e9c4d83d038 102 lower_bound = 40;
lucastai 2:5e9c4d83d038 103 pc.printf("MODE IS N\n");
lucastai 2:5e9c4d83d038 104 // if the char is S, set bounds to sleep
lucastai 2:5e9c4d83d038 105 }else if (a == 'S'){
lucastai 2:5e9c4d83d038 106 curr_mode = SLEEP;
lucastai 2:5e9c4d83d038 107 upper_bound = 60;
lucastai 2:5e9c4d83d038 108 lower_bound = 30;
lucastai 2:5e9c4d83d038 109 pc.printf("MODE IS S\n");
lucastai 2:5e9c4d83d038 110 // if the char is E, set bounds to exercise
lucastai 2:5e9c4d83d038 111 }else if (a == 'E'){
lucastai 2:5e9c4d83d038 112 curr_mode = EXERCISE;
lucastai 2:5e9c4d83d038 113 upper_bound = 175;
lucastai 2:5e9c4d83d038 114 lower_bound = 100;
lucastai 2:5e9c4d83d038 115 pc.printf("MODE IS E\n");
lucastai 2:5e9c4d83d038 116 beats = 2;
lucastai 2:5e9c4d83d038 117 // if the char is M, set to manual
lucastai 2:5e9c4d83d038 118 }else if (a == 'M'){
lucastai 2:5e9c4d83d038 119 curr_mode = MANUAL;
lucastai 2:5e9c4d83d038 120 upper_bound = 175;
lucastai 2:5e9c4d83d038 121 lower_bound = 30;
lucastai 2:5e9c4d83d038 122 beats = 300;
lucastai 2:5e9c4d83d038 123 pc.printf("MODE IS MANUAL\n");
lucastai 2:5e9c4d83d038 124 // check for A if mode is manual
lucastai 2:5e9c4d83d038 125 }else if (a == 'A'){
lucastai 2:5e9c4d83d038 126 if(curr_mode == MANUAL){
lucastai 2:5e9c4d83d038 127 pc.printf("MODE IS MANUAL GOT APACE\n");
lucastai 2:5e9c4d83d038 128 }
lucastai 2:5e9c4d83d038 129 // check for V is mode is manual
lucastai 2:5e9c4d83d038 130 }else if (a == 'V'){
lucastai 2:5e9c4d83d038 131 if(curr_mode == MANUAL){
lucastai 2:5e9c4d83d038 132 pc.printf("MODE IS MANUAL GOT VPACE\n");
lucastai 2:5e9c4d83d038 133 }
mhowar 5:9eee15818b0e 134 }else if (a == 'O'){
mhowar 5:9eee15818b0e 135 keyboard_needs_numeric = 1;
mhowar 5:9eee15818b0e 136 } else{
lucastai 2:5e9c4d83d038 137 // do nothing for invalid char
lucastai 2:5e9c4d83d038 138 }
lucastai 2:5e9c4d83d038 139
lucastai 2:5e9c4d83d038 140
lucastai 2:5e9c4d83d038 141 }
lucastai 2:5e9c4d83d038 142
amiche 3:44d132582373 143 void pm_sense() {
amiche 3:44d132582373 144 if (timer_count >= VRP) {
amiche 3:44d132582373 145 //wait for Vget vsense();
amiche 3:44d132582373 146 timer_count = 0;
amiche 3:44d132582373 147 } else
amiche 3:44d132582373 148 }
amiche 3:44d132582373 149
amiche 3:44d132582373 150 void pm_response() {
amiche 3:44d132582373 151 if (timer_count >= LRI-AVI) {
amiche 3:44d132582373 152 apace();
amiche 3:44d132582373 153 } else if (timer_count >= AVI) {
amiche 3:44d132582373 154 vsense();
amiche 3:44d132582373 155 }
amiche 3:44d132582373 156 }
lucastai 2:5e9c4d83d038 157
lucastai 2:5e9c4d83d038 158
lucastai 2:5e9c4d83d038 159 void apace() {
amiche 3:44d132582373 160 make pin 1
lucastai 2:5e9c4d83d038 161 }
lucastai 2:5e9c4d83d038 162
lucastai 2:5e9c4d83d038 163 void vpace() {
amiche 3:44d132582373 164 make pin 1
chadnach1 0:d92e0b71c6b5 165 }
chadnach1 0:d92e0b71c6b5 166
amiche 3:44d132582373 167
chadnach1 0:d92e0b71c6b5 168 int main() {
mhowar 5:9eee15818b0e 169 https://developer.mbed.org/users/chadnach1/code/PacemakerController/
lucastai 2:5e9c4d83d038 170 // connect the serial device (PC keybd) to the interrupt
mhowar 5:9eee15818b0e 171 pc.attach(&keyboard_handler);
lucastai 2:5e9c4d83d038 172
amiche 3:44d132582373 173 Thread t3(pm_sense);
amiche 3:44d132582373 174 Thread t4(pm_response);
amiche 3:44d132582373 175
amiche 3:44d132582373 176 Thread t2(PM_ALARM);
amiche 3:44d132582373 177 Thread t5();
amiche 3:44d132582373 178
chadnach1 0:d92e0b71c6b5 179 }