Chad Nachiappan / Mbed 2 deprecated PacemakerController

Part of the Pacemaker Project; this models the Pacemaker.

Dependencies:   mbed TextLCD mbed-rtos

PacemakerController.cpp@20:dc272bfaa276, 2015-11-30 (annotated)

Committer:
chadnach1
Date:
Mon Nov 30 21:38:54 2015 +0000
Revision:
20:dc272bfaa276
Parent:
19:f3615321b5c4
Child:
21:f7f50bbeba5e
Child:
24:81cd9ef5c4f6
filled in pm_sense method, still need to figure out Sense stuff;

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
amiche 19:f3615321b5c4 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 19:f3615321b5c4 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
amiche 19:f3615321b5c4 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
chadnach1 20:dc272bfaa276 45 DigitalIn aget(p24);
chadnach1 20:dc272bfaa276 46 DigitalIn vget(p23);
chadnach1 20:dc272bfaa276 47 DigitalOut apace(p22);
chadnach1 20:dc272bfaa276 48 DigitalOut vpace(p21);
lucastai 18:d4cd9d12345e 49
lucastai 2:5e9c4d83d038 50 // hardware interrupt handler, adapted from code in piazza post by Dagaen
amiche 19:f3615321b5c4 51 extern "C" void TIMER0_IRQHandler (void)
lucastai 2:5e9c4d83d038 52 {
amiche 19:f3615321b5c4 53 if((LPC_TIM0->IR & 0x01) == 0x01) { // if MR0 interrupt, proceed
amiche 19:f3615321b5c4 54 LPC_TIM0->IR |= 1 << 0; // Clear MR0 interrupt flag
amiche 19:f3615321b5c4 55 timer_count++; //increment timer_count
lucastai 2:5e9c4d83d038 56 }
lucastai 2:5e9c4d83d038 57 }
amiche 19:f3615321b5c4 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
amiche 19:f3615321b5c4 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
amiche 19:f3615321b5c4 71 void PM_ALARM(void const *argument)
amiche 19:f3615321b5c4 72 {
amiche 19:f3615321b5c4 73
lucastai 2:5e9c4d83d038 74 // min hr alarm
amiche 19:f3615321b5c4 75 if( beats < MIN_PM_RT) {
lucastai 2:5e9c4d83d038 76 lcd.locate(0,1);
amiche 19:f3615321b5c4 77 lcd.printf("!<");
lucastai 2:5e9c4d83d038 78 }
amiche 19:f3615321b5c4 79
lucastai 2:5e9c4d83d038 80 // max hr alarm
amiche 19:f3615321b5c4 81 if(beats > MAX_PM_RT) {
lucastai 2:5e9c4d83d038 82 lcd.locate(0,1);
amiche 19:f3615321b5c4 83 lcd.printf("!>");
amiche 19:f3615321b5c4 84 }
amiche 19:f3615321b5c4 85
chadnach1 0:d92e0b71c6b5 86 }
chadnach1 0:d92e0b71c6b5 87
lucastai 2:5e9c4d83d038 88 // hw interrupt callback, deal with the keyboard input from PC
amiche 19:f3615321b5c4 89 void keyboard_handler()
amiche 19:f3615321b5c4 90 {
amiche 19:f3615321b5c4 91
lucastai 2:5e9c4d83d038 92 // get the char, put it on the PC command line
lucastai 2:5e9c4d83d038 93 char a = pc.getc();
lucastai 2:5e9c4d83d038 94
mhowar 5:9eee15818b0e 95 if (keyboard_needs_numeric) {
mhowar 5:9eee15818b0e 96 if (a >= '0' && a <= '9') {
mhowar 5:9eee15818b0e 97 // update observation interval
mhowar 9:fd8477284185 98 obs_int = (a - '0' + 1) * 5;
mhowar 5:9eee15818b0e 99 } else {
amiche 19:f3615321b5c4 100 pc.printf("Expected numeric key\n");
mhowar 5:9eee15818b0e 101 }
amiche 19:f3615321b5c4 102 } else if(a == 'N') {
mhowar 5:9eee15818b0e 103 // if the char is N, update bounds to normal mode
lucastai 2:5e9c4d83d038 104 curr_mode = NORMAL;
lucastai 2:5e9c4d83d038 105 upper_bound = 100;
lucastai 2:5e9c4d83d038 106 lower_bound = 40;
amiche 19:f3615321b5c4 107 pc.printf("MODE IS N\n");
amiche 19:f3615321b5c4 108 // if the char is S, set bounds to sleep
amiche 19:f3615321b5c4 109 } else if (a == 'S') {
lucastai 2:5e9c4d83d038 110 curr_mode = SLEEP;
lucastai 2:5e9c4d83d038 111 upper_bound = 60;
lucastai 2:5e9c4d83d038 112 lower_bound = 30;
amiche 19:f3615321b5c4 113 pc.printf("MODE IS S\n");
amiche 19:f3615321b5c4 114 // if the char is E, set bounds to exercise
amiche 19:f3615321b5c4 115 } else if (a == 'E') {
lucastai 2:5e9c4d83d038 116 curr_mode = EXERCISE;
lucastai 2:5e9c4d83d038 117 upper_bound = 175;
lucastai 2:5e9c4d83d038 118 lower_bound = 100;
amiche 19:f3615321b5c4 119 pc.printf("MODE IS E\n");
lucastai 2:5e9c4d83d038 120 beats = 2;
amiche 19:f3615321b5c4 121 // if the char is M, set to manual
amiche 19:f3615321b5c4 122 } else if (a == 'M') {
lucastai 2:5e9c4d83d038 123 curr_mode = MANUAL;
lucastai 2:5e9c4d83d038 124 upper_bound = 175;
lucastai 2:5e9c4d83d038 125 lower_bound = 30;
lucastai 2:5e9c4d83d038 126 beats = 300;
amiche 19:f3615321b5c4 127 pc.printf("MODE IS MANUAL\n");
amiche 19:f3615321b5c4 128 // check for A if mode is manual
amiche 19:f3615321b5c4 129 } else if (a == 'A') {
amiche 19:f3615321b5c4 130 if(curr_mode == MANUAL) {
amiche 19:f3615321b5c4 131 pc.printf("MODE IS MANUAL GOT APACE\n");
lucastai 2:5e9c4d83d038 132 }
amiche 19:f3615321b5c4 133 // check for V is mode is manual
amiche 19:f3615321b5c4 134 } else if (a == 'V') {
amiche 19:f3615321b5c4 135 if(curr_mode == MANUAL) {
amiche 19:f3615321b5c4 136 pc.printf("MODE IS MANUAL GOT VPACE\n");
amiche 19:f3615321b5c4 137 }
amiche 19:f3615321b5c4 138 } else if (a == 'O') {
mhowar 5:9eee15818b0e 139 keyboard_needs_numeric = 1;
amiche 19:f3615321b5c4 140 } else {
lucastai 2:5e9c4d83d038 141 // do nothing for invalid char
lucastai 2:5e9c4d83d038 142 }
amiche 19:f3615321b5c4 143
lucastai 2:5e9c4d83d038 144 }
lucastai 2:5e9c4d83d038 145
amiche 19:f3615321b5c4 146 void pm_sense()
amiche 19:f3615321b5c4 147 {
amiche 19:f3615321b5c4 148
chadnach1 4:f04eb7f96f4b 149 while(1) {
amiche 19:f3615321b5c4 150
chadnach1 20:dc272bfaa276 151 if (timer_count >= VRP && vget == 1) {
chadnach1 20:dc272bfaa276 152 // Valid_V state
chadnach1 20:dc272bfaa276 153
amiche 19:f3615321b5c4 154 timer_count = 0;
amiche 19:f3615321b5c4 155 // do something with Vsense!
chadnach1 20:dc272bfaa276 156
chadnach1 20:dc272bfaa276 157 } else if (timer_count < VRP && vget == 1) {
chadnach1 20:dc272bfaa276 158 // Invalid_V state
chadnach1 4:f04eb7f96f4b 159 }
amiche 19:f3615321b5c4 160
chadnach1 20:dc272bfaa276 161 if (timer_count < PVARP && aget == 1) {
chadnach1 20:dc272bfaa276 162 // Invalid_A state
chadnach1 20:dc272bfaa276 163 } else if (timer_count >= PVARP && aget == 1) {
chadnach1 20:dc272bfaa276 164 // Valid_A state
chadnach1 20:dc272bfaa276 165
chadnach1 4:f04eb7f96f4b 166 // do something with Asense!
chadnach1 4:f04eb7f96f4b 167 }
amiche 19:f3615321b5c4 168
chadnach1 4:f04eb7f96f4b 169 }
amiche 3:44d132582373 170 }
amiche 3:44d132582373 171
amiche 19:f3615321b5c4 172 void pm_response()
amiche 19:f3615321b5c4 173 {
amiche 19:f3615321b5c4 174
chadnach1 4:f04eb7f96f4b 175 while(1) {
amiche 19:f3615321b5c4 176 if (timer_count >= LRI-AVI) {
amiche 19:f3615321b5c4 177
amiche 19:f3615321b5c4 178 // PM_A! sets the LED high
amiche 19:f3615321b5c4 179 led_apace = 1;
amiche 19:f3615321b5c4 180
amiche 19:f3615321b5c4 181 // avi_clk = 0
amiche 19:f3615321b5c4 182 avi_clk.reset();
amiche 19:f3615321b5c4 183
amiche 19:f3615321b5c4 184 apace();
amiche 19:f3615321b5c4 185 // At Atrial Event State
amiche 19:f3615321b5c4 186 while (avi_clk.read() < AVI);
amiche 19:f3615321b5c4 187
amiche 19:f3615321b5c4 188 // Ventricular Event
amiche 19:f3615321b5c4 189 timer_count = 0;
amiche 19:f3615321b5c4 190
amiche 19:f3615321b5c4 191 // PM_V! sets the LED high
amiche 19:f3615321b5c4 192 led_vpace = 1;
amiche 19:f3615321b5c4 193
amiche 19:f3615321b5c4 194 timer_count = 0;
amiche 19:f3615321b5c4 195 vpace();
amiche 19:f3615321b5c4 196 } else if (timer_count < LRI - AVI) {
amiche 19:f3615321b5c4 197
amiche 19:f3615321b5c4 198 // avi_clk = 0
amiche 19:f3615321b5c4 199 avi_clk.reset();
amiche 19:f3615321b5c4 200
amiche 19:f3615321b5c4 201 // wait for Asense? naaah
amiche 19:f3615321b5c4 202 }
amiche 19:f3615321b5c4 203 }
amiche 3:44d132582373 204 }
lucastai 2:5e9c4d83d038 205
amiche 19:f3615321b5c4 206 void apace()
amiche 19:f3615321b5c4 207 {
lucastai 2:5e9c4d83d038 208
lucastai 11:14b15f4604ad 209 apace = 1;
lucastai 14:a16b636c2bbc 210 led_apace = 1;
lucastai 11:14b15f4604ad 211 Thread::wait(10);
lucastai 11:14b15f4604ad 212 apace = 0;
lucastai 13:2a25dd47478e 213
lucastai 2:5e9c4d83d038 214 }
lucastai 2:5e9c4d83d038 215
amiche 19:f3615321b5c4 216 void vpace()
amiche 19:f3615321b5c4 217 {
amiche 19:f3615321b5c4 218
lucastai 11:14b15f4604ad 219 vpace = 1;
lucastai 14:a16b636c2bbc 220 led_vpace = 1;
lucastai 11:14b15f4604ad 221 Thread::wait(10);
lucastai 11:14b15f4604ad 222 vpace = 0;
amiche 19:f3615321b5c4 223
chadnach1 0:d92e0b71c6b5 224 }
chadnach1 0:d92e0b71c6b5 225
amiche 3:44d132582373 226
amiche 19:f3615321b5c4 227 int main()
amiche 19:f3615321b5c4 228 {
chadnach1 16:ae9df4194011 229 // https://developer.mbed.org/users/chadnach1/code/PacemakerController/
lucastai 2:5e9c4d83d038 230 // connect the serial device (PC keybd) to the interrupt
mhowar 5:9eee15818b0e 231 pc.attach(&keyboard_handler);
amiche 19:f3615321b5c4 232
chadnach1 16:ae9df4194011 233 // Start LED's Off
chadnach1 17:c89cddf30925 234 led_apace = 0;
chadnach1 17:c89cddf30925 235 led_vpace = 0;
amiche 19:f3615321b5c4 236
chadnach1 16:ae9df4194011 237 // Start the avi_clock
chadnach1 16:ae9df4194011 238 avi_clk.start();
amiche 19:f3615321b5c4 239
amiche 3:44d132582373 240 Thread t3(pm_sense);
amiche 3:44d132582373 241 Thread t4(pm_response);
amiche 3:44d132582373 242
amiche 3:44d132582373 243 Thread t2(PM_ALARM);
amiche 3:44d132582373 244 Thread t5();
amiche 3:44d132582373 245
chadnach1 17:c89cddf30925 246 }