Chad Nachiappan / Mbed 2 deprecated PacemakerController

Part of the Pacemaker Project; this models the Pacemaker.

Dependencies:   mbed TextLCD mbed-rtos

PacemakerController.cpp@21:f7f50bbeba5e, 2015-11-30 (annotated)

Committer:
amiche
Date:
Mon Nov 30 21:46:29 2015 +0000
Revision:
21:f7f50bbeba5e
Parent:
20:dc272bfaa276 
Add vsense and asense for pm_sense

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
amiche 21:f7f50bbeba5e 25
lucastai 2:5e9c4d83d038 26 // constants
lucastai 2:5e9c4d83d038 27 int MAX_PM_RT = 180;
lucastai 2:5e9c4d83d038 28 int MIN_PM_RT = 40;
lucastai 2:5e9c4d83d038 29 enum mode {NORMAL, SLEEP, EXERCISE, MANUAL};
lucastai 2:5e9c4d83d038 30
lucastai 2:5e9c4d83d038 31 // counters
lucastai 2:5e9c4d83d038 32 int beats = 0;
lucastai 2:5e9c4d83d038 33
lucastai 2:5e9c4d83d038 34 // state variables
lucastai 2:5e9c4d83d038 35 int upper_bound = 100;
lucastai 2:5e9c4d83d038 36 int lower_bound = 40;
lucastai 2:5e9c4d83d038 37 int obs_int = 10;
lucastai 2:5e9c4d83d038 38 mode curr_mode = NORMAL;
lucastai 2:5e9c4d83d038 39
amiche 19:f3615321b5c4 40 // alarms
lucastai 14:a16b636c2bbc 41 DigitalOut led_apace(LED1);
lucastai 14:a16b636c2bbc 42 DigitalOut led_vpace(LED2);
lucastai 2:5e9c4d83d038 43 DigitalOut Asense(LED3);
lucastai 2:5e9c4d83d038 44 DigitalOut Vsense(LED4);
lucastai 2:5e9c4d83d038 45
chadnach1 20:dc272bfaa276 46 DigitalIn aget(p24);
chadnach1 20:dc272bfaa276 47 DigitalIn vget(p23);
chadnach1 20:dc272bfaa276 48 DigitalOut apace(p22);
chadnach1 20:dc272bfaa276 49 DigitalOut vpace(p21);
lucastai 18:d4cd9d12345e 50
amiche 21:f7f50bbeba5e 51 bool vsense;
amiche 21:f7f50bbeba5e 52 bool asense;
amiche 21:f7f50bbeba5e 53
lucastai 2:5e9c4d83d038 54 // hardware interrupt handler, adapted from code in piazza post by Dagaen
amiche 19:f3615321b5c4 55 extern "C" void TIMER0_IRQHandler (void)
lucastai 2:5e9c4d83d038 56 {
amiche 19:f3615321b5c4 57 if((LPC_TIM0->IR & 0x01) == 0x01) { // if MR0 interrupt, proceed
amiche 19:f3615321b5c4 58 LPC_TIM0->IR |= 1 << 0; // Clear MR0 interrupt flag
amiche 19:f3615321b5c4 59 timer_count++; //increment timer_count
lucastai 2:5e9c4d83d038 60 }
lucastai 2:5e9c4d83d038 61 }
amiche 19:f3615321b5c4 62
lucastai 2:5e9c4d83d038 63 // init the hardware interrupt (timer0), adapted same as above
lucastai 2:5e9c4d83d038 64 void timer0_init(void)
lucastai 2:5e9c4d83d038 65 {
lucastai 2:5e9c4d83d038 66 LPC_SC->PCONP |=1<1; //timer0 power on
lucastai 2:5e9c4d83d038 67 LPC_SC-> PCLKSEL0 |= 1 << 2; // set timer clock to CCLCK nondivided (1 clock cycle = 1 increment)
lucastai 2:5e9c4d83d038 68 LPC_TIM0->MR0 = 1000000; //100mhz clock cycle, 1 cycle = 10ns, 10ms = 10 000 000 ns = 1M cycles
lucastai 2:5e9c4d83d038 69 LPC_TIM0->MCR = 3; //interrupt and reset control
amiche 19:f3615321b5c4 70 //3 = Interrupt & reset timer0 on match (111) sets all three bits
lucastai 2:5e9c4d83d038 71 NVIC_EnableIRQ(TIMER0_IRQn); //enable timer0 interrupt
chadnach1 0:d92e0b71c6b5 72 }
chadnach1 0:d92e0b71c6b5 73
lucastai 2:5e9c4d83d038 74
amiche 19:f3615321b5c4 75 void PM_ALARM(void const *argument)
amiche 19:f3615321b5c4 76 {
amiche 19:f3615321b5c4 77
lucastai 2:5e9c4d83d038 78 // min hr alarm
amiche 19:f3615321b5c4 79 if( beats < MIN_PM_RT) {
lucastai 2:5e9c4d83d038 80 lcd.locate(0,1);
amiche 19:f3615321b5c4 81 lcd.printf("!<");
lucastai 2:5e9c4d83d038 82 }
amiche 19:f3615321b5c4 83
lucastai 2:5e9c4d83d038 84 // max hr alarm
amiche 19:f3615321b5c4 85 if(beats > MAX_PM_RT) {
lucastai 2:5e9c4d83d038 86 lcd.locate(0,1);
amiche 19:f3615321b5c4 87 lcd.printf("!>");
amiche 19:f3615321b5c4 88 }
amiche 19:f3615321b5c4 89
chadnach1 0:d92e0b71c6b5 90 }
chadnach1 0:d92e0b71c6b5 91
lucastai 2:5e9c4d83d038 92 // hw interrupt callback, deal with the keyboard input from PC
amiche 19:f3615321b5c4 93 void keyboard_handler()
amiche 19:f3615321b5c4 94 {
amiche 19:f3615321b5c4 95
lucastai 2:5e9c4d83d038 96 // get the char, put it on the PC command line
lucastai 2:5e9c4d83d038 97 char a = pc.getc();
lucastai 2:5e9c4d83d038 98
mhowar 5:9eee15818b0e 99 if (keyboard_needs_numeric) {
mhowar 5:9eee15818b0e 100 if (a >= '0' && a <= '9') {
mhowar 5:9eee15818b0e 101 // update observation interval
mhowar 9:fd8477284185 102 obs_int = (a - '0' + 1) * 5;
mhowar 5:9eee15818b0e 103 } else {
amiche 19:f3615321b5c4 104 pc.printf("Expected numeric key\n");
mhowar 5:9eee15818b0e 105 }
amiche 19:f3615321b5c4 106 } else if(a == 'N') {
mhowar 5:9eee15818b0e 107 // if the char is N, update bounds to normal mode
lucastai 2:5e9c4d83d038 108 curr_mode = NORMAL;
lucastai 2:5e9c4d83d038 109 upper_bound = 100;
lucastai 2:5e9c4d83d038 110 lower_bound = 40;
amiche 19:f3615321b5c4 111 pc.printf("MODE IS N\n");
amiche 19:f3615321b5c4 112 // if the char is S, set bounds to sleep
amiche 19:f3615321b5c4 113 } else if (a == 'S') {
lucastai 2:5e9c4d83d038 114 curr_mode = SLEEP;
lucastai 2:5e9c4d83d038 115 upper_bound = 60;
lucastai 2:5e9c4d83d038 116 lower_bound = 30;
amiche 19:f3615321b5c4 117 pc.printf("MODE IS S\n");
amiche 19:f3615321b5c4 118 // if the char is E, set bounds to exercise
amiche 19:f3615321b5c4 119 } else if (a == 'E') {
lucastai 2:5e9c4d83d038 120 curr_mode = EXERCISE;
lucastai 2:5e9c4d83d038 121 upper_bound = 175;
lucastai 2:5e9c4d83d038 122 lower_bound = 100;
amiche 19:f3615321b5c4 123 pc.printf("MODE IS E\n");
lucastai 2:5e9c4d83d038 124 beats = 2;
amiche 19:f3615321b5c4 125 // if the char is M, set to manual
amiche 19:f3615321b5c4 126 } else if (a == 'M') {
lucastai 2:5e9c4d83d038 127 curr_mode = MANUAL;
lucastai 2:5e9c4d83d038 128 upper_bound = 175;
lucastai 2:5e9c4d83d038 129 lower_bound = 30;
lucastai 2:5e9c4d83d038 130 beats = 300;
amiche 19:f3615321b5c4 131 pc.printf("MODE IS MANUAL\n");
amiche 19:f3615321b5c4 132 // check for A if mode is manual
amiche 19:f3615321b5c4 133 } else if (a == 'A') {
amiche 19:f3615321b5c4 134 if(curr_mode == MANUAL) {
amiche 19:f3615321b5c4 135 pc.printf("MODE IS MANUAL GOT APACE\n");
lucastai 2:5e9c4d83d038 136 }
amiche 19:f3615321b5c4 137 // check for V is mode is manual
amiche 19:f3615321b5c4 138 } else if (a == 'V') {
amiche 19:f3615321b5c4 139 if(curr_mode == MANUAL) {
amiche 19:f3615321b5c4 140 pc.printf("MODE IS MANUAL GOT VPACE\n");
amiche 19:f3615321b5c4 141 }
amiche 19:f3615321b5c4 142 } else if (a == 'O') {
mhowar 5:9eee15818b0e 143 keyboard_needs_numeric = 1;
amiche 19:f3615321b5c4 144 } else {
lucastai 2:5e9c4d83d038 145 // do nothing for invalid char
lucastai 2:5e9c4d83d038 146 }
amiche 19:f3615321b5c4 147
lucastai 2:5e9c4d83d038 148 }
lucastai 2:5e9c4d83d038 149
amiche 19:f3615321b5c4 150 void pm_sense()
amiche 19:f3615321b5c4 151 {
amiche 19:f3615321b5c4 152
chadnach1 4:f04eb7f96f4b 153 while(1) {
amiche 19:f3615321b5c4 154
chadnach1 20:dc272bfaa276 155 if (timer_count >= VRP && vget == 1) {
chadnach1 20:dc272bfaa276 156 // Valid_V state
chadnach1 20:dc272bfaa276 157
amiche 19:f3615321b5c4 158 timer_count = 0;
amiche 21:f7f50bbeba5e 159 vsense();
amiche 19:f3615321b5c4 160 // do something with Vsense!
chadnach1 20:dc272bfaa276 161
chadnach1 20:dc272bfaa276 162 } else if (timer_count < VRP && vget == 1) {
chadnach1 20:dc272bfaa276 163 // Invalid_V state
chadnach1 4:f04eb7f96f4b 164 }
amiche 19:f3615321b5c4 165
chadnach1 20:dc272bfaa276 166 if (timer_count < PVARP && aget == 1) {
chadnach1 20:dc272bfaa276 167 // Invalid_A state
chadnach1 20:dc272bfaa276 168 } else if (timer_count >= PVARP && aget == 1) {
chadnach1 20:dc272bfaa276 169 // Valid_A state
amiche 21:f7f50bbeba5e 170 asense();
chadnach1 4:f04eb7f96f4b 171 // do something with Asense!
chadnach1 4:f04eb7f96f4b 172 }
amiche 19:f3615321b5c4 173
chadnach1 4:f04eb7f96f4b 174 }
amiche 3:44d132582373 175 }
amiche 3:44d132582373 176
amiche 19:f3615321b5c4 177 void pm_response()
amiche 19:f3615321b5c4 178 {
amiche 19:f3615321b5c4 179
chadnach1 4:f04eb7f96f4b 180 while(1) {
amiche 19:f3615321b5c4 181 if (timer_count >= LRI-AVI) {
amiche 19:f3615321b5c4 182
amiche 19:f3615321b5c4 183 // PM_A! sets the LED high
amiche 19:f3615321b5c4 184 led_apace = 1;
amiche 19:f3615321b5c4 185
amiche 19:f3615321b5c4 186 // avi_clk = 0
amiche 19:f3615321b5c4 187 avi_clk.reset();
amiche 19:f3615321b5c4 188
amiche 19:f3615321b5c4 189 apace();
amiche 19:f3615321b5c4 190 // At Atrial Event State
amiche 19:f3615321b5c4 191 while (avi_clk.read() < AVI);
amiche 19:f3615321b5c4 192
amiche 19:f3615321b5c4 193 // Ventricular Event
amiche 19:f3615321b5c4 194 timer_count = 0;
amiche 19:f3615321b5c4 195
amiche 19:f3615321b5c4 196 // PM_V! sets the LED high
amiche 19:f3615321b5c4 197 led_vpace = 1;
amiche 19:f3615321b5c4 198
amiche 19:f3615321b5c4 199 timer_count = 0;
amiche 19:f3615321b5c4 200 vpace();
amiche 19:f3615321b5c4 201 } else if (timer_count < LRI - AVI) {
amiche 19:f3615321b5c4 202
amiche 19:f3615321b5c4 203 // avi_clk = 0
amiche 19:f3615321b5c4 204 avi_clk.reset();
amiche 19:f3615321b5c4 205
amiche 19:f3615321b5c4 206 // wait for Asense? naaah
amiche 19:f3615321b5c4 207 }
amiche 19:f3615321b5c4 208 }
amiche 3:44d132582373 209 }
lucastai 2:5e9c4d83d038 210
amiche 21:f7f50bbeba5e 211 void vsense() {
amiche 21:f7f50bbeba5e 212 vsense = 1;
amiche 21:f7f50bbeba5e 213 Thread::wait(10);
amiche 21:f7f50bbeba5e 214 vsense = 0;
amiche 21:f7f50bbeba5e 215 }
amiche 21:f7f50bbeba5e 216
amiche 21:f7f50bbeba5e 217 void asense() {
amiche 21:f7f50bbeba5e 218 asense = 1;
amiche 21:f7f50bbeba5e 219 Thread::wait(10);
amiche 21:f7f50bbeba5e 220 asense = 0;
amiche 21:f7f50bbeba5e 221 }
amiche 21:f7f50bbeba5e 222
amiche 19:f3615321b5c4 223 void apace()
amiche 19:f3615321b5c4 224 {
lucastai 2:5e9c4d83d038 225
lucastai 11:14b15f4604ad 226 apace = 1;
lucastai 14:a16b636c2bbc 227 led_apace = 1;
lucastai 11:14b15f4604ad 228 Thread::wait(10);
lucastai 11:14b15f4604ad 229 apace = 0;
lucastai 13:2a25dd47478e 230
lucastai 2:5e9c4d83d038 231 }
lucastai 2:5e9c4d83d038 232
amiche 19:f3615321b5c4 233 void vpace()
amiche 19:f3615321b5c4 234 {
amiche 19:f3615321b5c4 235
lucastai 11:14b15f4604ad 236 vpace = 1;
lucastai 14:a16b636c2bbc 237 led_vpace = 1;
lucastai 11:14b15f4604ad 238 Thread::wait(10);
lucastai 11:14b15f4604ad 239 vpace = 0;
amiche 19:f3615321b5c4 240
chadnach1 0:d92e0b71c6b5 241 }
chadnach1 0:d92e0b71c6b5 242
amiche 3:44d132582373 243
amiche 19:f3615321b5c4 244 int main()
amiche 19:f3615321b5c4 245 {
chadnach1 16:ae9df4194011 246 // https://developer.mbed.org/users/chadnach1/code/PacemakerController/
lucastai 2:5e9c4d83d038 247 // connect the serial device (PC keybd) to the interrupt
mhowar 5:9eee15818b0e 248 pc.attach(&keyboard_handler);
amiche 19:f3615321b5c4 249
chadnach1 16:ae9df4194011 250 // Start LED's Off
chadnach1 17:c89cddf30925 251 led_apace = 0;
chadnach1 17:c89cddf30925 252 led_vpace = 0;
amiche 19:f3615321b5c4 253
chadnach1 16:ae9df4194011 254 // Start the avi_clock
chadnach1 16:ae9df4194011 255 avi_clk.start();
amiche 19:f3615321b5c4 256
amiche 3:44d132582373 257 Thread t3(pm_sense);
amiche 3:44d132582373 258 Thread t4(pm_response);
amiche 3:44d132582373 259
amiche 3:44d132582373 260 Thread t2(PM_ALARM);
amiche 3:44d132582373 261 Thread t5();
amiche 3:44d132582373 262
chadnach1 17:c89cddf30925 263 }