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Part of the Pacemaker Project; this models the Pacemaker.
Dependencies: mbed TextLCD mbed-rtos
PacemakerController.cpp.orig@23:08456978fb78, 2015-11-30 (annotated)
- Committer:
- lucastai
- Date:
- Mon Nov 30 21:47:20 2015 +0000
- Revision:
- 23:08456978fb78
testing random heart;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
lucastai | 23:08456978fb78 | 1 | #include "mbed.h" |
lucastai | 23:08456978fb78 | 2 | #include "LPC17xx.h" |
lucastai | 23:08456978fb78 | 3 | #include "TextLCD.h" |
lucastai | 23:08456978fb78 | 4 | #include "rtos.h" |
lucastai | 23:08456978fb78 | 5 | #include "Thread.h" |
lucastai | 23:08456978fb78 | 6 | using namespace rtos; |
lucastai | 23:08456978fb78 | 7 | |
lucastai | 23:08456978fb78 | 8 | |
lucastai | 23:08456978fb78 | 9 | // This is for the pacemaker |
lucastai | 23:08456978fb78 | 10 | volatile unsigned short timer_count; |
lucastai | 23:08456978fb78 | 11 | Serial pc(USBTX, USBRX); |
lucastai | 23:08456978fb78 | 12 | TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD20x4); // rs, e, d4-d7 |
lucastai | 23:08456978fb78 | 13 | |
lucastai | 23:08456978fb78 | 14 | int keyboard_needs_numeric = 0; // boolean - is in middle of interval input? |
lucastai | 23:08456978fb78 | 15 | |
lucastai | 23:08456978fb78 | 16 | int h_clock; |
lucastai | 23:08456978fb78 | 17 | int pm_clock; |
lucastai | 23:08456978fb78 | 18 | Timer avi_clock; |
lucastai | 23:08456978fb78 | 19 | |
lucastai | 23:08456978fb78 | 20 | int LRI = 1000; |
lucastai | 23:08456978fb78 | 21 | int AVI = 150; |
lucastai | 23:08456978fb78 | 22 | int PVARP = 300; |
lucastai | 23:08456978fb78 | 23 | int VRP = 200; |
lucastai | 23:08456978fb78 | 24 | |
lucastai | 23:08456978fb78 | 25 | // constants |
lucastai | 23:08456978fb78 | 26 | int MAX_PM_RT = 180; |
lucastai | 23:08456978fb78 | 27 | int MIN_PM_RT = 40; |
lucastai | 23:08456978fb78 | 28 | enum mode {NORMAL, SLEEP, EXERCISE, MANUAL}; |
lucastai | 23:08456978fb78 | 29 | |
lucastai | 23:08456978fb78 | 30 | // counters |
lucastai | 23:08456978fb78 | 31 | int beats = 0; |
lucastai | 23:08456978fb78 | 32 | |
lucastai | 23:08456978fb78 | 33 | // state variables |
lucastai | 23:08456978fb78 | 34 | int upper_bound = 100; |
lucastai | 23:08456978fb78 | 35 | int lower_bound = 40; |
lucastai | 23:08456978fb78 | 36 | int obs_int = 10; |
lucastai | 23:08456978fb78 | 37 | mode curr_mode = NORMAL; |
lucastai | 23:08456978fb78 | 38 | |
lucastai | 23:08456978fb78 | 39 | // alarms |
lucastai | 23:08456978fb78 | 40 | DigitalOut led_apace(LED1); |
lucastai | 23:08456978fb78 | 41 | DigitalOut led_vpace(LED2); |
lucastai | 23:08456978fb78 | 42 | DigitalOut Asense(LED3); |
lucastai | 23:08456978fb78 | 43 | DigitalOut Vsense(LED4); |
lucastai | 23:08456978fb78 | 44 | |
lucastai | 23:08456978fb78 | 45 | DigitalOut apace(p22): |
lucastai | 23:08456978fb78 | 46 | DigitalOut vpace(p21): |
lucastai | 23:08456978fb78 | 47 | |
lucastai | 23:08456978fb78 | 48 | // hardware interrupt handler, adapted from code in piazza post by Dagaen |
lucastai | 23:08456978fb78 | 49 | extern "C" void TIMER0_IRQHandler (void) |
lucastai | 23:08456978fb78 | 50 | { |
lucastai | 23:08456978fb78 | 51 | if((LPC_TIM0->IR & 0x01) == 0x01) { // if MR0 interrupt, proceed |
lucastai | 23:08456978fb78 | 52 | LPC_TIM0->IR |= 1 << 0; // Clear MR0 interrupt flag |
lucastai | 23:08456978fb78 | 53 | timer_count++; //increment timer_count |
lucastai | 23:08456978fb78 | 54 | } |
lucastai | 23:08456978fb78 | 55 | } |
lucastai | 23:08456978fb78 | 56 | |
lucastai | 23:08456978fb78 | 57 | // init the hardware interrupt (timer0), adapted same as above |
lucastai | 23:08456978fb78 | 58 | void timer0_init(void) |
lucastai | 23:08456978fb78 | 59 | { |
lucastai | 23:08456978fb78 | 60 | LPC_SC->PCONP |=1<1; //timer0 power on |
lucastai | 23:08456978fb78 | 61 | LPC_SC-> PCLKSEL0 |= 1 << 2; // set timer clock to CCLCK nondivided (1 clock cycle = 1 increment) |
lucastai | 23:08456978fb78 | 62 | LPC_TIM0->MR0 = 1000000; //100mhz clock cycle, 1 cycle = 10ns, 10ms = 10 000 000 ns = 1M cycles |
lucastai | 23:08456978fb78 | 63 | LPC_TIM0->MCR = 3; //interrupt and reset control |
lucastai | 23:08456978fb78 | 64 | //3 = Interrupt & reset timer0 on match (111) sets all three bits |
lucastai | 23:08456978fb78 | 65 | NVIC_EnableIRQ(TIMER0_IRQn); //enable timer0 interrupt |
lucastai | 23:08456978fb78 | 66 | } |
lucastai | 23:08456978fb78 | 67 | |
lucastai | 23:08456978fb78 | 68 | |
lucastai | 23:08456978fb78 | 69 | void PM_ALARM(void const *argument) |
lucastai | 23:08456978fb78 | 70 | { |
lucastai | 23:08456978fb78 | 71 | |
lucastai | 23:08456978fb78 | 72 | // min hr alarm |
lucastai | 23:08456978fb78 | 73 | if( beats < MIN_PM_RT) { |
lucastai | 23:08456978fb78 | 74 | lcd.locate(0,1); |
lucastai | 23:08456978fb78 | 75 | lcd.printf("!<"); |
lucastai | 23:08456978fb78 | 76 | } |
lucastai | 23:08456978fb78 | 77 | |
lucastai | 23:08456978fb78 | 78 | // max hr alarm |
lucastai | 23:08456978fb78 | 79 | if(beats > MAX_PM_RT) { |
lucastai | 23:08456978fb78 | 80 | lcd.locate(0,1); |
lucastai | 23:08456978fb78 | 81 | lcd.printf("!>"); |
lucastai | 23:08456978fb78 | 82 | } |
lucastai | 23:08456978fb78 | 83 | |
lucastai | 23:08456978fb78 | 84 | } |
lucastai | 23:08456978fb78 | 85 | |
lucastai | 23:08456978fb78 | 86 | // hw interrupt callback, deal with the keyboard input from PC |
lucastai | 23:08456978fb78 | 87 | void keyboard_handler() |
lucastai | 23:08456978fb78 | 88 | { |
lucastai | 23:08456978fb78 | 89 | |
lucastai | 23:08456978fb78 | 90 | // get the char, put it on the PC command line |
lucastai | 23:08456978fb78 | 91 | char a = pc.getc(); |
lucastai | 23:08456978fb78 | 92 | |
lucastai | 23:08456978fb78 | 93 | if (keyboard_needs_numeric) { |
lucastai | 23:08456978fb78 | 94 | if (a >= '0' && a <= '9') { |
lucastai | 23:08456978fb78 | 95 | // update observation interval |
lucastai | 23:08456978fb78 | 96 | obs_int = (a - '0' + 1) * 5; |
lucastai | 23:08456978fb78 | 97 | } else { |
lucastai | 23:08456978fb78 | 98 | pc.printf("Expected numeric key\n"); |
lucastai | 23:08456978fb78 | 99 | } |
lucastai | 23:08456978fb78 | 100 | } else if(a == 'N') { |
lucastai | 23:08456978fb78 | 101 | // if the char is N, update bounds to normal mode |
lucastai | 23:08456978fb78 | 102 | curr_mode = NORMAL; |
lucastai | 23:08456978fb78 | 103 | upper_bound = 100; |
lucastai | 23:08456978fb78 | 104 | lower_bound = 40; |
lucastai | 23:08456978fb78 | 105 | pc.printf("MODE IS N\n"); |
lucastai | 23:08456978fb78 | 106 | // if the char is S, set bounds to sleep |
lucastai | 23:08456978fb78 | 107 | } else if (a == 'S') { |
lucastai | 23:08456978fb78 | 108 | curr_mode = SLEEP; |
lucastai | 23:08456978fb78 | 109 | upper_bound = 60; |
lucastai | 23:08456978fb78 | 110 | lower_bound = 30; |
lucastai | 23:08456978fb78 | 111 | pc.printf("MODE IS S\n"); |
lucastai | 23:08456978fb78 | 112 | // if the char is E, set bounds to exercise |
lucastai | 23:08456978fb78 | 113 | } else if (a == 'E') { |
lucastai | 23:08456978fb78 | 114 | curr_mode = EXERCISE; |
lucastai | 23:08456978fb78 | 115 | upper_bound = 175; |
lucastai | 23:08456978fb78 | 116 | lower_bound = 100; |
lucastai | 23:08456978fb78 | 117 | pc.printf("MODE IS E\n"); |
lucastai | 23:08456978fb78 | 118 | beats = 2; |
lucastai | 23:08456978fb78 | 119 | // if the char is M, set to manual |
lucastai | 23:08456978fb78 | 120 | } else if (a == 'M') { |
lucastai | 23:08456978fb78 | 121 | curr_mode = MANUAL; |
lucastai | 23:08456978fb78 | 122 | upper_bound = 175; |
lucastai | 23:08456978fb78 | 123 | lower_bound = 30; |
lucastai | 23:08456978fb78 | 124 | beats = 300; |
lucastai | 23:08456978fb78 | 125 | pc.printf("MODE IS MANUAL\n"); |
lucastai | 23:08456978fb78 | 126 | // check for A if mode is manual |
lucastai | 23:08456978fb78 | 127 | } else if (a == 'A') { |
lucastai | 23:08456978fb78 | 128 | if(curr_mode == MANUAL) { |
lucastai | 23:08456978fb78 | 129 | pc.printf("MODE IS MANUAL GOT APACE\n"); |
lucastai | 23:08456978fb78 | 130 | } |
lucastai | 23:08456978fb78 | 131 | // check for V is mode is manual |
lucastai | 23:08456978fb78 | 132 | } else if (a == 'V') { |
lucastai | 23:08456978fb78 | 133 | if(curr_mode == MANUAL) { |
lucastai | 23:08456978fb78 | 134 | pc.printf("MODE IS MANUAL GOT VPACE\n"); |
lucastai | 23:08456978fb78 | 135 | } |
lucastai | 23:08456978fb78 | 136 | } else if (a == 'O') { |
lucastai | 23:08456978fb78 | 137 | keyboard_needs_numeric = 1; |
lucastai | 23:08456978fb78 | 138 | } else { |
lucastai | 23:08456978fb78 | 139 | // do nothing for invalid char |
lucastai | 23:08456978fb78 | 140 | } |
lucastai | 23:08456978fb78 | 141 | |
lucastai | 23:08456978fb78 | 142 | |
lucastai | 23:08456978fb78 | 143 | } |
lucastai | 23:08456978fb78 | 144 | |
lucastai | 23:08456978fb78 | 145 | void pm_sense() |
lucastai | 23:08456978fb78 | 146 | { |
lucastai | 23:08456978fb78 | 147 | |
lucastai | 23:08456978fb78 | 148 | while(1) { |
lucastai | 23:08456978fb78 | 149 | |
lucastai | 23:08456978fb78 | 150 | if (timer_count >= VRP) { |
lucastai | 23:08456978fb78 | 151 | //wait for Vget; |
lucastai | 23:08456978fb78 | 152 | timer_count = 0; |
lucastai | 23:08456978fb78 | 153 | // do something with Vsense! |
lucastai | 23:08456978fb78 | 154 | } else if (timer_count < VRP) { |
lucastai | 23:08456978fb78 | 155 | // wait for Vget |
lucastai | 23:08456978fb78 | 156 | } |
lucastai | 23:08456978fb78 | 157 | |
lucastai | 23:08456978fb78 | 158 | if (timer_count < PVARP) { |
lucastai | 23:08456978fb78 | 159 | // wait for Aget? |
lucastai | 23:08456978fb78 | 160 | } else if (timer_count >= PVARP) { |
lucastai | 23:08456978fb78 | 161 | // wait for Aget? |
lucastai | 23:08456978fb78 | 162 | // do something with Asense! |
lucastai | 23:08456978fb78 | 163 | } |
lucastai | 23:08456978fb78 | 164 | |
lucastai | 23:08456978fb78 | 165 | } |
lucastai | 23:08456978fb78 | 166 | } |
lucastai | 23:08456978fb78 | 167 | |
lucastai | 23:08456978fb78 | 168 | void pm_response() |
lucastai | 23:08456978fb78 | 169 | { |
lucastai | 23:08456978fb78 | 170 | |
lucastai | 23:08456978fb78 | 171 | while(1) { |
lucastai | 23:08456978fb78 | 172 | if (timer_count >= LRI-AVI) { |
lucastai | 23:08456978fb78 | 173 | |
lucastai | 23:08456978fb78 | 174 | // PM_A! sets the LED high |
lucastai | 23:08456978fb78 | 175 | led_apace = 1; |
lucastai | 23:08456978fb78 | 176 | |
lucastai | 23:08456978fb78 | 177 | // avi_clk = 0 |
lucastai | 23:08456978fb78 | 178 | avi_clk.reset(); |
lucastai | 23:08456978fb78 | 179 | |
lucastai | 23:08456978fb78 | 180 | apace(); |
lucastai | 23:08456978fb78 | 181 | // At Atrial Event State |
lucastai | 23:08456978fb78 | 182 | while (avi_clk.read() < AVI); |
lucastai | 23:08456978fb78 | 183 | |
lucastai | 23:08456978fb78 | 184 | // Ventricular Event |
lucastai | 23:08456978fb78 | 185 | timer_count = 0; |
lucastai | 23:08456978fb78 | 186 | |
lucastai | 23:08456978fb78 | 187 | // PM_V! sets the LED high |
lucastai | 23:08456978fb78 | 188 | led_vpace = 1; |
lucastai | 23:08456978fb78 | 189 | |
lucastai | 23:08456978fb78 | 190 | timer_count = 0; |
lucastai | 23:08456978fb78 | 191 | vpace(); |
lucastai | 23:08456978fb78 | 192 | } else if (timer_count < LRI - AVI) { |
lucastai | 23:08456978fb78 | 193 | |
lucastai | 23:08456978fb78 | 194 | // avi_clk = 0 |
lucastai | 23:08456978fb78 | 195 | avi_clk.reset(); |
lucastai | 23:08456978fb78 | 196 | |
lucastai | 23:08456978fb78 | 197 | // wait for Asense? naaah |
lucastai | 23:08456978fb78 | 198 | } |
lucastai | 23:08456978fb78 | 199 | } |
lucastai | 23:08456978fb78 | 200 | } |
lucastai | 23:08456978fb78 | 201 | |
lucastai | 23:08456978fb78 | 202 | void apace() |
lucastai | 23:08456978fb78 | 203 | { |
lucastai | 23:08456978fb78 | 204 | |
lucastai | 23:08456978fb78 | 205 | apace = 1; |
lucastai | 23:08456978fb78 | 206 | led_apace = 1; |
lucastai | 23:08456978fb78 | 207 | Thread::wait(10); |
lucastai | 23:08456978fb78 | 208 | apace = 0; |
lucastai | 23:08456978fb78 | 209 | |
lucastai | 23:08456978fb78 | 210 | } |
lucastai | 23:08456978fb78 | 211 | |
lucastai | 23:08456978fb78 | 212 | void vpace() |
lucastai | 23:08456978fb78 | 213 | { |
lucastai | 23:08456978fb78 | 214 | |
lucastai | 23:08456978fb78 | 215 | vpace = 1; |
lucastai | 23:08456978fb78 | 216 | led_vpace = 1; |
lucastai | 23:08456978fb78 | 217 | Thread::wait(10); |
lucastai | 23:08456978fb78 | 218 | vpace = 0; |
lucastai | 23:08456978fb78 | 219 | |
lucastai | 23:08456978fb78 | 220 | } |
lucastai | 23:08456978fb78 | 221 | |
lucastai | 23:08456978fb78 | 222 | |
lucastai | 23:08456978fb78 | 223 | int main() |
lucastai | 23:08456978fb78 | 224 | { |
lucastai | 23:08456978fb78 | 225 | // https://developer.mbed.org/users/chadnach1/code/PacemakerController/ |
lucastai | 23:08456978fb78 | 226 | // connect the serial device (PC keybd) to the interrupt |
lucastai | 23:08456978fb78 | 227 | pc.attach(&keyboard_handler); |
lucastai | 23:08456978fb78 | 228 | |
lucastai | 23:08456978fb78 | 229 | // Start LED's Off |
lucastai | 23:08456978fb78 | 230 | led_apace = 0; |
lucastai | 23:08456978fb78 | 231 | led_vpace = 0; |
lucastai | 23:08456978fb78 | 232 | |
lucastai | 23:08456978fb78 | 233 | // Start the avi_clock |
lucastai | 23:08456978fb78 | 234 | avi_clk.start(); |
lucastai | 23:08456978fb78 | 235 | |
lucastai | 23:08456978fb78 | 236 | Thread t3(pm_sense); |
lucastai | 23:08456978fb78 | 237 | Thread t4(pm_response); |
lucastai | 23:08456978fb78 | 238 | |
lucastai | 23:08456978fb78 | 239 | Thread t2(PM_ALARM); |
lucastai | 23:08456978fb78 | 240 | Thread t5(); |
lucastai | 23:08456978fb78 | 241 | |
lucastai | 23:08456978fb78 | 242 | } |