Chad Nachiappan / Mbed 2 deprecated PacemakerController

Part of the Pacemaker Project; this models the Pacemaker.

Dependencies:   mbed TextLCD mbed-rtos

PacemakerController.cpp@17:c89cddf30925, 2015-11-30 (annotated)

Committer:
chadnach1
Date:
Mon Nov 30 21:06:25 2015 +0000
Revision:
17:c89cddf30925
Parent:
14:a16b636c2bbc
Parent:
16:ae9df4194011
Child:
18:d4cd9d12345e
merge Lucas' branch with pm_response

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;
chadnach1 16:ae9df4194011 18 Timer 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 // alarms
lucastai 14:a16b636c2bbc 40 DigitalOut led_apace(LED1);
lucastai 14:a16b636c2bbc 41 DigitalOut led_vpace(LED2);
lucastai 2:5e9c4d83d038 42 DigitalOut Asense(LED3);
lucastai 2:5e9c4d83d038 43 DigitalOut Vsense(LED4);
lucastai 2:5e9c4d83d038 44
lucastai 2:5e9c4d83d038 45 // hardware interrupt handler, adapted from code in piazza post by Dagaen
lucastai 2:5e9c4d83d038 46 extern "C" void TIMER0_IRQHandler (void)
lucastai 2:5e9c4d83d038 47 {
lucastai 2:5e9c4d83d038 48 if((LPC_TIM0->IR & 0x01) == 0x01) // if MR0 interrupt, proceed
lucastai 2:5e9c4d83d038 49 {
lucastai 2:5e9c4d83d038 50 LPC_TIM0->IR |= 1 << 0; // Clear MR0 interrupt flag
lucastai 2:5e9c4d83d038 51 timer_count++; //increment timer_count
lucastai 2:5e9c4d83d038 52 }
lucastai 2:5e9c4d83d038 53 }
lucastai 2:5e9c4d83d038 54
lucastai 2:5e9c4d83d038 55 // init the hardware interrupt (timer0), adapted same as above
lucastai 2:5e9c4d83d038 56 void timer0_init(void)
lucastai 2:5e9c4d83d038 57 {
lucastai 2:5e9c4d83d038 58 LPC_SC->PCONP |=1<1; //timer0 power on
lucastai 2:5e9c4d83d038 59 LPC_SC-> PCLKSEL0 |= 1 << 2; // set timer clock to CCLCK nondivided (1 clock cycle = 1 increment)
lucastai 2:5e9c4d83d038 60 LPC_TIM0->MR0 = 1000000; //100mhz clock cycle, 1 cycle = 10ns, 10ms = 10 000 000 ns = 1M cycles
lucastai 2:5e9c4d83d038 61 LPC_TIM0->MCR = 3; //interrupt and reset control
lucastai 2:5e9c4d83d038 62 //3 = Interrupt & reset timer0 on match (111) sets all three bits
lucastai 2:5e9c4d83d038 63 NVIC_EnableIRQ(TIMER0_IRQn); //enable timer0 interrupt
chadnach1 0:d92e0b71c6b5 64 }
chadnach1 0:d92e0b71c6b5 65
lucastai 2:5e9c4d83d038 66
lucastai 2:5e9c4d83d038 67 void PM_ALARM(void const *argument){
lucastai 2:5e9c4d83d038 68
lucastai 2:5e9c4d83d038 69 // min hr alarm
lucastai 2:5e9c4d83d038 70 if( beats < MIN_PM_RT){
lucastai 2:5e9c4d83d038 71 lcd.locate(0,1);
lucastai 2:5e9c4d83d038 72 lcd.printf("!<");
lucastai 2:5e9c4d83d038 73 }
lucastai 2:5e9c4d83d038 74
lucastai 2:5e9c4d83d038 75 // max hr alarm
lucastai 2:5e9c4d83d038 76 if(beats > MAX_PM_RT){
lucastai 2:5e9c4d83d038 77 lcd.locate(0,1);
lucastai 2:5e9c4d83d038 78 lcd.printf("!>");
lucastai 2:5e9c4d83d038 79 }
chadnach1 0:d92e0b71c6b5 80
chadnach1 0:d92e0b71c6b5 81 }
chadnach1 0:d92e0b71c6b5 82
lucastai 2:5e9c4d83d038 83 // hw interrupt callback, deal with the keyboard input from PC
mhowar 5:9eee15818b0e 84 void keyboard_handler() {
lucastai 2:5e9c4d83d038 85
lucastai 2:5e9c4d83d038 86 // get the char, put it on the PC command line
lucastai 2:5e9c4d83d038 87 char a = pc.getc();
lucastai 2:5e9c4d83d038 88
mhowar 5:9eee15818b0e 89 if (keyboard_needs_numeric) {
mhowar 5:9eee15818b0e 90 if (a >= '0' && a <= '9') {
mhowar 5:9eee15818b0e 91 // update observation interval
mhowar 9:fd8477284185 92 obs_int = (a - '0' + 1) * 5;
mhowar 5:9eee15818b0e 93 } else {
mhowar 5:9eee15818b0e 94 pc.printf("Expected numeric key\n");
mhowar 5:9eee15818b0e 95 }
mhowar 5:9eee15818b0e 96 } else if(a == 'N'){
mhowar 5:9eee15818b0e 97 // if the char is N, update bounds to normal mode
lucastai 2:5e9c4d83d038 98 curr_mode = NORMAL;
lucastai 2:5e9c4d83d038 99 upper_bound = 100;
lucastai 2:5e9c4d83d038 100 lower_bound = 40;
lucastai 2:5e9c4d83d038 101 pc.printf("MODE IS N\n");
lucastai 2:5e9c4d83d038 102 // if the char is S, set bounds to sleep
lucastai 2:5e9c4d83d038 103 }else if (a == 'S'){
lucastai 2:5e9c4d83d038 104 curr_mode = SLEEP;
lucastai 2:5e9c4d83d038 105 upper_bound = 60;
lucastai 2:5e9c4d83d038 106 lower_bound = 30;
lucastai 2:5e9c4d83d038 107 pc.printf("MODE IS S\n");
lucastai 2:5e9c4d83d038 108 // if the char is E, set bounds to exercise
lucastai 2:5e9c4d83d038 109 }else if (a == 'E'){
lucastai 2:5e9c4d83d038 110 curr_mode = EXERCISE;
lucastai 2:5e9c4d83d038 111 upper_bound = 175;
lucastai 2:5e9c4d83d038 112 lower_bound = 100;
lucastai 2:5e9c4d83d038 113 pc.printf("MODE IS E\n");
lucastai 2:5e9c4d83d038 114 beats = 2;
lucastai 2:5e9c4d83d038 115 // if the char is M, set to manual
lucastai 2:5e9c4d83d038 116 }else if (a == 'M'){
lucastai 2:5e9c4d83d038 117 curr_mode = MANUAL;
lucastai 2:5e9c4d83d038 118 upper_bound = 175;
lucastai 2:5e9c4d83d038 119 lower_bound = 30;
lucastai 2:5e9c4d83d038 120 beats = 300;
lucastai 2:5e9c4d83d038 121 pc.printf("MODE IS MANUAL\n");
lucastai 2:5e9c4d83d038 122 // check for A if mode is manual
lucastai 2:5e9c4d83d038 123 }else if (a == 'A'){
lucastai 2:5e9c4d83d038 124 if(curr_mode == MANUAL){
lucastai 2:5e9c4d83d038 125 pc.printf("MODE IS MANUAL GOT APACE\n");
lucastai 2:5e9c4d83d038 126 }
lucastai 2:5e9c4d83d038 127 // check for V is mode is manual
lucastai 2:5e9c4d83d038 128 }else if (a == 'V'){
lucastai 2:5e9c4d83d038 129 if(curr_mode == MANUAL){
lucastai 2:5e9c4d83d038 130 pc.printf("MODE IS MANUAL GOT VPACE\n");
lucastai 2:5e9c4d83d038 131 }
mhowar 5:9eee15818b0e 132 }else if (a == 'O'){
mhowar 5:9eee15818b0e 133 keyboard_needs_numeric = 1;
mhowar 5:9eee15818b0e 134 } else{
lucastai 2:5e9c4d83d038 135 // do nothing for invalid char
lucastai 2:5e9c4d83d038 136 }
lucastai 2:5e9c4d83d038 137
lucastai 2:5e9c4d83d038 138
lucastai 2:5e9c4d83d038 139 }
lucastai 2:5e9c4d83d038 140
amiche 3:44d132582373 141 void pm_sense() {
chadnach1 4:f04eb7f96f4b 142
chadnach1 4:f04eb7f96f4b 143 while(1) {
chadnach1 4:f04eb7f96f4b 144
chadnach1 4:f04eb7f96f4b 145 if (timer_count >= VRP) {
chadnach1 4:f04eb7f96f4b 146 //wait for Vget;
chadnach1 4:f04eb7f96f4b 147 timer_count = 0;
chadnach1 4:f04eb7f96f4b 148 // do something with Vsense!
chadnach1 4:f04eb7f96f4b 149 } else if (timer_count < VRP) {
chadnach1 4:f04eb7f96f4b 150 // wait for Vget
chadnach1 4:f04eb7f96f4b 151 }
chadnach1 4:f04eb7f96f4b 152
chadnach1 4:f04eb7f96f4b 153 if (timer_count < PVARP) {
chadnach1 4:f04eb7f96f4b 154 // wait for Aget?
chadnach1 4:f04eb7f96f4b 155 } else if (timer_count >= PVARP) {
chadnach1 4:f04eb7f96f4b 156 // wait for Aget?
chadnach1 4:f04eb7f96f4b 157 // do something with Asense!
chadnach1 4:f04eb7f96f4b 158 }
chadnach1 4:f04eb7f96f4b 159
chadnach1 4:f04eb7f96f4b 160 }
amiche 3:44d132582373 161 }
amiche 3:44d132582373 162
amiche 3:44d132582373 163 void pm_response() {
chadnach1 4:f04eb7f96f4b 164
chadnach1 4:f04eb7f96f4b 165 while(1) {
chadnach1 4:f04eb7f96f4b 166 if (timer_count >= LRI-AVI) {
chadnach1 16:ae9df4194011 167
chadnach1 16:ae9df4194011 168 // PM_A! sets the LED high
chadnach1 17:c89cddf30925 169 led_apace = 1;
chadnach1 16:ae9df4194011 170
chadnach1 4:f04eb7f96f4b 171 // avi_clk = 0
chadnach1 16:ae9df4194011 172 avi_clk.reset();
chadnach1 16:ae9df4194011 173
chadnach1 16:ae9df4194011 174 apace();
chadnach1 7:af6c040f0421 175 } else if (timer_count < LRI - AVI) {
chadnach1 16:ae9df4194011 176
chadnach1 7:af6c040f0421 177 // avi_clk = 0
chadnach1 16:ae9df4194011 178 avi_clk.reset();
chadnach1 16:ae9df4194011 179
chadnach1 16:ae9df4194011 180 // wait for Asense? naaah
chadnach1 7:af6c040f0421 181 }
chadnach1 7:af6c040f0421 182
chadnach1 7:af6c040f0421 183 // At Atrial Event State
chadnach1 16:ae9df4194011 184 while (avi_clk.read() < AVI);
chadnach1 7:af6c040f0421 185
chadnach1 7:af6c040f0421 186 // Ventricular Event
chadnach1 7:af6c040f0421 187 timer_count = 0;
chadnach1 16:ae9df4194011 188
chadnach1 16:ae9df4194011 189 // PM_V! sets the LED high
chadnach1 17:c89cddf30925 190 led_vpace = 1;
chadnach1 16:ae9df4194011 191
chadnach1 7:af6c040f0421 192 timer_count = 0;
chadnach1 16:ae9df4194011 193 vpace();
chadnach1 4:f04eb7f96f4b 194 }
amiche 3:44d132582373 195 }
lucastai 2:5e9c4d83d038 196
lucastai 2:5e9c4d83d038 197
lucastai 2:5e9c4d83d038 198 void apace() {
chadnach1 17:c89cddf30925 199
lucastai 11:14b15f4604ad 200 apace = 1;
lucastai 14:a16b636c2bbc 201 led_apace = 1;
lucastai 11:14b15f4604ad 202 Thread::wait(10);
lucastai 11:14b15f4604ad 203 apace = 0;
lucastai 13:2a25dd47478e 204
lucastai 2:5e9c4d83d038 205 }
lucastai 2:5e9c4d83d038 206
lucastai 2:5e9c4d83d038 207 void vpace() {
chadnach1 17:c89cddf30925 208
lucastai 11:14b15f4604ad 209 vpace = 1;
lucastai 14:a16b636c2bbc 210 led_vpace = 1;
lucastai 11:14b15f4604ad 211 Thread::wait(10);
lucastai 11:14b15f4604ad 212 vpace = 0;
chadnach1 17:c89cddf30925 213
chadnach1 0:d92e0b71c6b5 214 }
chadnach1 0:d92e0b71c6b5 215
amiche 3:44d132582373 216
chadnach1 0:d92e0b71c6b5 217 int main() {
chadnach1 16:ae9df4194011 218 // https://developer.mbed.org/users/chadnach1/code/PacemakerController/
lucastai 2:5e9c4d83d038 219 // connect the serial device (PC keybd) to the interrupt
mhowar 5:9eee15818b0e 220 pc.attach(&keyboard_handler);
lucastai 2:5e9c4d83d038 221
chadnach1 16:ae9df4194011 222 // Start LED's Off
chadnach1 17:c89cddf30925 223 led_apace = 0;
chadnach1 17:c89cddf30925 224 led_vpace = 0;
chadnach1 16:ae9df4194011 225
chadnach1 16:ae9df4194011 226 // Start the avi_clock
chadnach1 16:ae9df4194011 227 avi_clk.start();
chadnach1 16:ae9df4194011 228
amiche 3:44d132582373 229 Thread t3(pm_sense);
amiche 3:44d132582373 230 Thread t4(pm_response);
amiche 3:44d132582373 231
amiche 3:44d132582373 232 Thread t2(PM_ALARM);
amiche 3:44d132582373 233 Thread t5();
amiche 3:44d132582373 234
chadnach1 17:c89cddf30925 235 }