Jing Qiu / Mbed 2 deprecated Pacemaker

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Dependencies:   TextLCD mbed-rtos mbed

Fork of Pacemaker by pacemaker team

main.cpp@15:4cd550c14f97, 2014-12-02 (annotated)

Committer:
amlittle042
Date:
Tue Dec 02 00:01:31 2014 +0000
Revision:
15:4cd550c14f97
Parent:
14:94f1b9e3eb43
Child:
17:6c44d5317c49
Changed interrupt pins to not conflict with lcd display

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mfrede 0:6d04b1860ecf 1 /*
mfrede 0:6d04b1860ecf 2 * Pacemaker MBED code
mfrede 0:6d04b1860ecf 3 *
mfrede 0:6d04b1860ecf 4 * CIS541 Embedded Systems for Life Critical Applications
amlittle042 15:4cd550c14f97 5 * Authors: Jing Qiu
amlittle042 15:4cd550c14f97 6 * Michael Frederick
amlittle042 15:4cd550c14f97 7 * Tim Hu
amlittle042 15:4cd550c14f97 8 * Alex Little
mfrede 0:6d04b1860ecf 9 *
mfrede 1:e37d0cad77e2 10 */
Jing_Qiu 3:34e9766539fe 11
mfrede 1:e37d0cad77e2 12 #include "mbed.h"
mfrede 1:e37d0cad77e2 13 #include "LPC17xx.h"
mfrede 1:e37d0cad77e2 14 #include "TextLCD.h"
mfrede 1:e37d0cad77e2 15 #include "rtos.h"
mfrede 11:dd278ffcb31f 16 #include <ctype.h>
mfrede 1:e37d0cad77e2 17
Jing_Qiu 3:34e9766539fe 18 #define AVI_h 100
Jing_Qiu 3:34e9766539fe 19 #define AVI_l 30
Jing_Qiu 3:34e9766539fe 20 #define PVARP_h 500
Jing_Qiu 3:34e9766539fe 21 #define PVARP_l 150
Jing_Qiu 3:34e9766539fe 22
Jing_Qiu 3:34e9766539fe 23 #define VRP_h 500
Jing_Qiu 3:34e9766539fe 24 #define VRP_l 150
Jing_Qiu 3:34e9766539fe 25 #define BM(x) (1<<(x))
Jing_Qiu 3:34e9766539fe 26 #define PULSE_WIDTH_V 200
Jing_Qiu 3:34e9766539fe 27 #define PULSE_WIDTH_A 100
Jing_Qiu 3:34e9766539fe 28
amlittle042 15:4cd550c14f97 29 TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD16x2);
Jing_Qiu 5:376358077dc8 30
Jing_Qiu 3:34e9766539fe 31 int LRI_h = 1666;
Jing_Qiu 3:34e9766539fe 32 int LRI_l = 666;
Jing_Qiu 5:376358077dc8 33 int observation_interval=10000; //ms
mfrede 8:ce2565cfe709 34 bool setObservation = false;
Jing_Qiu 3:34e9766539fe 35
mfrede 1:e37d0cad77e2 36 Serial pc(USBTX, USBRX);
amlittle042 15:4cd550c14f97 37
mfrede 1:e37d0cad77e2 38 char mode = 'N';
Jing_Qiu 3:34e9766539fe 39
mfrede 1:e37d0cad77e2 40 int a_clock;
mfrede 1:e37d0cad77e2 41 int v_clock;
mfrede 6:6bc5e65ada4e 42 bool setobservation = false;
mfrede 1:e37d0cad77e2 43
Jing_Qiu 5:376358077dc8 44 int beat;
Jing_Qiu 5:376358077dc8 45
amlittle042 15:4cd550c14f97 46 InterruptIn atrial_int(p21); // double check me
amlittle042 15:4cd550c14f97 47 InterruptIn vent_int(p22); // me too
Jing_Qiu 3:34e9766539fe 48
Jing_Qiu 3:34e9766539fe 49 const int a_pace = 5; //pin 21 a pace output
Jing_Qiu 3:34e9766539fe 50 const int v_pace = 3; //pin 23 v pace output
Jing_Qiu 3:34e9766539fe 51
Jing_Qiu 3:34e9766539fe 52 bool aSensed = 0; // 0 means that we are expecting Apace or Asense next
Jing_Qiu 5:376358077dc8 53 DigitalOut led1(LED1); //apace
Jing_Qiu 5:376358077dc8 54 DigitalOut led2(LED2); //vpace
Jing_Qiu 5:376358077dc8 55 DigitalOut led3(LED3); //asense
Jing_Qiu 5:376358077dc8 56 DigitalOut led4(LED4); //vsense
Jing_Qiu 3:34e9766539fe 57
Jing_Qiu 3:34e9766539fe 58 void initTimer();
Jing_Qiu 3:34e9766539fe 59 void startTimer();
Jing_Qiu 3:34e9766539fe 60 void initGPIO_outputs();
Jing_Qiu 3:34e9766539fe 61 void setGPIO(const int pinName);
Jing_Qiu 3:34e9766539fe 62 void clearGPIO(const int pinName);
Jing_Qiu 3:34e9766539fe 63
Jing_Qiu 3:34e9766539fe 64 void asense();
Jing_Qiu 3:34e9766539fe 65 void vsense();
Jing_Qiu 3:34e9766539fe 66
Jing_Qiu 3:34e9766539fe 67 void apace();
Jing_Qiu 3:34e9766539fe 68 void vpace();
Jing_Qiu 3:34e9766539fe 69
Jing_Qiu 3:34e9766539fe 70
Jing_Qiu 3:34e9766539fe 71 void apace()
Jing_Qiu 3:34e9766539fe 72 {
Jing_Qiu 5:376358077dc8 73 led1 = 1;
Jing_Qiu 3:34e9766539fe 74 setGPIO(a_pace);
Jing_Qiu 3:34e9766539fe 75 wait_us(PULSE_WIDTH_A);
Jing_Qiu 5:376358077dc8 76 clearGPIO(a_pace);
mfrede 8:ce2565cfe709 77 led1 = 0;
mfrede 13:0a430559b488 78 beat++;
Jing_Qiu 5:376358077dc8 79
Jing_Qiu 3:34e9766539fe 80 }
Jing_Qiu 3:34e9766539fe 81
Jing_Qiu 3:34e9766539fe 82 void vpace()
Jing_Qiu 3:34e9766539fe 83 {
Jing_Qiu 5:376358077dc8 84 led2= 1;
Jing_Qiu 3:34e9766539fe 85 setGPIO(v_pace);
Jing_Qiu 3:34e9766539fe 86 wait_us(PULSE_WIDTH_V);
Jing_Qiu 3:34e9766539fe 87 clearGPIO(v_pace);
Jing_Qiu 5:376358077dc8 88 led2 = 0;
Jing_Qiu 3:34e9766539fe 89 }
Jing_Qiu 3:34e9766539fe 90
Jing_Qiu 3:34e9766539fe 91 void initGPIO_outputs()
Jing_Qiu 3:34e9766539fe 92 {
Jing_Qiu 3:34e9766539fe 93 LPC_SC->PCONP |= 1<<15;
Jing_Qiu 3:34e9766539fe 94 LPC_GPIO2->FIODIR |= 1<<5;
Jing_Qiu 3:34e9766539fe 95 LPC_GPIO2->FIODIR |= 1<<3;
Jing_Qiu 3:34e9766539fe 96 LPC_GPIO2->FIODIR &= ~(1<<1);
Jing_Qiu 3:34e9766539fe 97 LPC_GPIO2->FIODIR &= ~(1<<2);
Jing_Qiu 3:34e9766539fe 98 }
Jing_Qiu 3:34e9766539fe 99
Jing_Qiu 3:34e9766539fe 100 void setGPIO(const int pinName)
Jing_Qiu 3:34e9766539fe 101 {
Jing_Qiu 3:34e9766539fe 102 LPC_GPIO2->FIOPIN |= (1<<pinName);
Jing_Qiu 3:34e9766539fe 103 }
Jing_Qiu 3:34e9766539fe 104
Jing_Qiu 3:34e9766539fe 105 void clearGPIO(const int pinName)
Jing_Qiu 3:34e9766539fe 106 {
Jing_Qiu 3:34e9766539fe 107 LPC_GPIO2->FIOPIN &= ~(1<<pinName);
Jing_Qiu 3:34e9766539fe 108 }
Jing_Qiu 3:34e9766539fe 109
Jing_Qiu 3:34e9766539fe 110 void initTimer()
Jing_Qiu 3:34e9766539fe 111 {
Jing_Qiu 3:34e9766539fe 112 // set up OS timer (timer0)
Jing_Qiu 3:34e9766539fe 113 LPC_SC->PCONP |= BM(1); //power up timer0
Jing_Qiu 3:34e9766539fe 114 LPC_SC->PCLKSEL0 |= BM(2); // clock = CCLK (96 MHz)
Jing_Qiu 3:34e9766539fe 115 LPC_TIM0->PR = 48000; // set prescale to 48000 (2048 Hz timer)
Jing_Qiu 3:34e9766539fe 116 LPC_TIM0->MR0 = 1; // match0 compare value (32-bit)
Jing_Qiu 3:34e9766539fe 117 LPC_TIM0->MCR |= BM(0)|BM(1); // interrupt and reset on match0 compare
Jing_Qiu 3:34e9766539fe 118 NVIC_EnableIRQ(TIMER0_IRQn); // enable timer interrupt
Jing_Qiu 3:34e9766539fe 119 }
Jing_Qiu 3:34e9766539fe 120
Jing_Qiu 3:34e9766539fe 121 void startTimer()
Jing_Qiu 3:34e9766539fe 122 {
Jing_Qiu 3:34e9766539fe 123 LPC_TIM0->TCR |= BM(1); // reset timer1
Jing_Qiu 3:34e9766539fe 124 LPC_TIM0->TCR &= ~BM(1); // release reset
Jing_Qiu 3:34e9766539fe 125 LPC_TIM0->TCR |= BM(0); // start timer
Jing_Qiu 3:34e9766539fe 126 }
Jing_Qiu 3:34e9766539fe 127
Jing_Qiu 3:34e9766539fe 128 void resetTimer()
Jing_Qiu 3:34e9766539fe 129 {
Jing_Qiu 3:34e9766539fe 130 LPC_TIM0->TCR |= BM(1); // reset timer0
Jing_Qiu 3:34e9766539fe 131 LPC_TIM0->TCR &= ~BM(1); // release reset
Jing_Qiu 3:34e9766539fe 132 }
Jing_Qiu 3:34e9766539fe 133
Jing_Qiu 3:34e9766539fe 134
Jing_Qiu 3:34e9766539fe 135
mfrede 1:e37d0cad77e2 136 void display_thread_handler(void const *args)
mfrede 1:e37d0cad77e2 137 {
mfrede 1:e37d0cad77e2 138 while(1)
mfrede 1:e37d0cad77e2 139 {
Jing_Qiu 5:376358077dc8 140 wait_ms(observation_interval);
amlittle042 15:4cd550c14f97 141 pc.printf("BPM: %d\r\n",beat*60000/observation_interval);
amlittle042 15:4cd550c14f97 142 lcd.cls();
amlittle042 15:4cd550c14f97 143 lcd.printf("BPM: %d\r\n", beat*60000/observation_interval);
Jing_Qiu 5:376358077dc8 144 beat=0;
mfrede 1:e37d0cad77e2 145 }
mfrede 1:e37d0cad77e2 146 }
mfrede 1:e37d0cad77e2 147
mfrede 1:e37d0cad77e2 148
mfrede 1:e37d0cad77e2 149 void asense() {
Jing_Qiu 3:34e9766539fe 150 if (v_clock >= VRP_l) { //Ignore vSense outside this time interval
Jing_Qiu 3:34e9766539fe 151 v_clock = 0;
Jing_Qiu 3:34e9766539fe 152 aSensed = 0;
Jing_Qiu 3:34e9766539fe 153 }
Jing_Qiu 5:376358077dc8 154 led3 = 1;
Jing_Qiu 5:376358077dc8 155
mfrede 1:e37d0cad77e2 156 }
mfrede 1:e37d0cad77e2 157
mfrede 1:e37d0cad77e2 158 void vsense() {
Jing_Qiu 12:53c2af2009d4 159 if ((a_clock >= PVARP_l) && aSensed == 0){
Jing_Qiu 3:34e9766539fe 160 a_clock = 0;
Jing_Qiu 3:34e9766539fe 161 aSensed = 1;
Jing_Qiu 5:376358077dc8 162 beat++;
Jing_Qiu 3:34e9766539fe 163 }
Jing_Qiu 5:376358077dc8 164 led4 = 1;
mfrede 1:e37d0cad77e2 165 }
mfrede 1:e37d0cad77e2 166
mfrede 1:e37d0cad77e2 167 void button_handler(void const *args)
mfrede 1:e37d0cad77e2 168 {
mfrede 8:ce2565cfe709 169 int observation_temp=0;
mfrede 1:e37d0cad77e2 170 while(1)
mfrede 1:e37d0cad77e2 171 {
mfrede 1:e37d0cad77e2 172 char buffer;
mfrede 1:e37d0cad77e2 173 if(pc.readable()) {
mfrede 11:dd278ffcb31f 174 buffer = toupper(pc.getc());
mfrede 1:e37d0cad77e2 175 if (buffer == 'N')
mfrede 10:19a2ce5660ea 176 {
mfrede 1:e37d0cad77e2 177 mode = buffer;
mfrede 10:19a2ce5660ea 178 LRI_h = 1500;
mfrede 10:19a2ce5660ea 179 LRI_l = 600;
mfrede 10:19a2ce5660ea 180 }
mfrede 1:e37d0cad77e2 181 else if (buffer == 'S')
mfrede 10:19a2ce5660ea 182 {
mfrede 1:e37d0cad77e2 183 mode = buffer;
mfrede 10:19a2ce5660ea 184 LRI_h = 2000;
mfrede 10:19a2ce5660ea 185 LRI_l = 1000;
mfrede 10:19a2ce5660ea 186 }
mfrede 1:e37d0cad77e2 187 else if (buffer == 'E')
mfrede 10:19a2ce5660ea 188 {
mfrede 1:e37d0cad77e2 189 mode = buffer;
mfrede 10:19a2ce5660ea 190 LRI_h = 600;
mfrede 10:19a2ce5660ea 191 LRI_l = 342;
mfrede 10:19a2ce5660ea 192 }
mfrede 1:e37d0cad77e2 193 else if (buffer == 'M')
mfrede 10:19a2ce5660ea 194 {
mfrede 1:e37d0cad77e2 195 mode = buffer;
mfrede 10:19a2ce5660ea 196 LRI_h = 2000;
mfrede 10:19a2ce5660ea 197 LRI_l = 342;
mfrede 10:19a2ce5660ea 198 }
mfrede 1:e37d0cad77e2 199 else if (buffer == 'A' && mode == 'M')
mfrede 1:e37d0cad77e2 200 apace();
mfrede 1:e37d0cad77e2 201 else if (buffer == 'V' && mode == 'M')
mfrede 1:e37d0cad77e2 202 vpace();
mfrede 8:ce2565cfe709 203 else if (buffer == 'O') {
mfrede 8:ce2565cfe709 204 setObservation = true;
mfrede 8:ce2565cfe709 205 observation_temp = 0;
mfrede 8:ce2565cfe709 206 }
mfrede 14:94f1b9e3eb43 207 else if (buffer == 13 && setObservation) //newline
mfrede 6:6bc5e65ada4e 208 {
mfrede 8:ce2565cfe709 209 observation_interval = observation_temp*1000;
mfrede 8:ce2565cfe709 210 setObservation = false;
mfrede 14:94f1b9e3eb43 211 // printf("observation interval now: %d\r\n",observation_interval);
mfrede 6:6bc5e65ada4e 212 }
mfrede 8:ce2565cfe709 213 else if (setObservation)
mfrede 6:6bc5e65ada4e 214 {
mfrede 8:ce2565cfe709 215 observation_temp *= 10;
mfrede 14:94f1b9e3eb43 216 observation_temp += buffer-48;
mfrede 1:e37d0cad77e2 217
mfrede 6:6bc5e65ada4e 218 }
mfrede 1:e37d0cad77e2 219 }
mfrede 1:e37d0cad77e2 220 }
mfrede 1:e37d0cad77e2 221 }
mfrede 1:e37d0cad77e2 222
Jing_Qiu 3:34e9766539fe 223 void pacemaker_thread_handler(void const *args)
Jing_Qiu 3:34e9766539fe 224 {
Jing_Qiu 3:34e9766539fe 225 initGPIO_outputs();
Jing_Qiu 3:34e9766539fe 226
Jing_Qiu 3:34e9766539fe 227 /**********************************************************
Jing_Qiu 3:34e9766539fe 228 ************Initialize timer to interrupt every 1 ms*********
Jing_Qiu 3:34e9766539fe 229 ***********************************************************/
Jing_Qiu 3:34e9766539fe 230
Jing_Qiu 3:34e9766539fe 231 initTimer();
Jing_Qiu 3:34e9766539fe 232 startTimer();
Jing_Qiu 3:34e9766539fe 233
Jing_Qiu 3:34e9766539fe 234 atrial_int.rise(&asense);
Jing_Qiu 3:34e9766539fe 235 vent_int.rise(&vsense);
Jing_Qiu 3:34e9766539fe 236 while(1){}
Jing_Qiu 3:34e9766539fe 237
Jing_Qiu 3:34e9766539fe 238 }
Jing_Qiu 3:34e9766539fe 239
Jing_Qiu 3:34e9766539fe 240
Jing_Qiu 3:34e9766539fe 241 /**********************************************************
Jing_Qiu 3:34e9766539fe 242 ************ timer interrupt every 1 ms*********
Jing_Qiu 3:34e9766539fe 243 ***********************************************************/
Jing_Qiu 3:34e9766539fe 244
Jing_Qiu 3:34e9766539fe 245 extern "C" void TIMER0_IRQHandler (void) {
Jing_Qiu 3:34e9766539fe 246 if((LPC_TIM0->IR & 0x01) == 0x01) // if MR0 interrupt
Jing_Qiu 3:34e9766539fe 247 {
Jing_Qiu 3:34e9766539fe 248 LPC_TIM0->IR |= (1 << 0); // Clear MR0 interrupt flag
Jing_Qiu 3:34e9766539fe 249 if (v_clock >= (LRI_h-AVI_l) && aSensed == 0) {
Jing_Qiu 3:34e9766539fe 250 a_clock = 0;
Jing_Qiu 3:34e9766539fe 251 aSensed = 1;
Jing_Qiu 3:34e9766539fe 252 //printf("Apace %d\r\n",v_clk);
Jing_Qiu 3:34e9766539fe 253 apace();
Jing_Qiu 3:34e9766539fe 254 /*
Jing_Qiu 3:34e9766539fe 255 setGPIO(a_pace);
Jing_Qiu 3:34e9766539fe 256 wait_us(PULSE_WIDTH_A);
Jing_Qiu 3:34e9766539fe 257 clearGPIO(a_pace);
Jing_Qiu 3:34e9766539fe 258 */
Jing_Qiu 3:34e9766539fe 259 }
Jing_Qiu 3:34e9766539fe 260 if ((a_clock >= AVI_h) && aSensed == 1) {
Jing_Qiu 3:34e9766539fe 261 v_clock = 0;
Jing_Qiu 3:34e9766539fe 262 aSensed = 0;
Jing_Qiu 5:376358077dc8 263 //led3 = 0;
Jing_Qiu 3:34e9766539fe 264 //printf("Vpace %d\r\n",a_clk);
Jing_Qiu 3:34e9766539fe 265 /*
Jing_Qiu 3:34e9766539fe 266 setGPIO(v_pace);
Jing_Qiu 3:34e9766539fe 267 wait_us(PULSE_WIDTH_V);
Jing_Qiu 3:34e9766539fe 268 clearGPIO(v_pace);
Jing_Qiu 3:34e9766539fe 269 */
Jing_Qiu 3:34e9766539fe 270 vpace();
Jing_Qiu 3:34e9766539fe 271 }
Jing_Qiu 3:34e9766539fe 272 v_clock++;
Jing_Qiu 3:34e9766539fe 273 a_clock++;
Jing_Qiu 5:376358077dc8 274
Jing_Qiu 5:376358077dc8 275 if(v_clock>500) led3 = 0;
Jing_Qiu 5:376358077dc8 276 if(a_clock>500) led4 = 0;
Jing_Qiu 3:34e9766539fe 277 }
Jing_Qiu 3:34e9766539fe 278 }
mfrede 1:e37d0cad77e2 279
mfrede 1:e37d0cad77e2 280
Jing_Qiu 3:34e9766539fe 281 int main (void) {
Jing_Qiu 3:34e9766539fe 282 //TODO set parameters
Jing_Qiu 5:376358077dc8 283
Jing_Qiu 3:34e9766539fe 284
Jing_Qiu 3:34e9766539fe 285 Thread display(display_thread_handler);
Jing_Qiu 3:34e9766539fe 286 Thread keyboard(button_handler);
Jing_Qiu 3:34e9766539fe 287 Thread pacemaker(pacemaker_thread_handler);
Jing_Qiu 3:34e9766539fe 288
Jing_Qiu 3:34e9766539fe 289 while(1){}
Jing_Qiu 3:34e9766539fe 290
Jing_Qiu 3:34e9766539fe 291
mfrede 1:e37d0cad77e2 292 }