Diff: main.cpp
- Revision:
- 0:8964cd6e2cd3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sun Oct 11 22:51:20 2020 +0000
@@ -0,0 +1,239 @@
+#include "mbed.h"
+#include "rtos.h"
+#include "C12832_lcd.h"
+
+//FINITE STATE MACHINE EVENTS
+#define NO_EVENT 0
+#define TIME_OUT 1
+#define BUTTON_PRESS 2
+
+//STATES
+#define STATE_0 0
+#define STATE_1 1
+#define STATE_2 2
+#define STATE_3 3
+#define STATE_4 4
+#define STATE_5 5
+
+
+
+//pass event via message queue
+typedef struct {
+ int event; /* AD result of measured voltage */
+} message_t;
+
+MemoryPool<message_t, 16> mpool;
+Queue<message_t, 16> queue;
+
+//button plus local display
+DigitalIn fire(p14);
+C12832_LCD lcd; //On board LCD display
+
+//leds for debug
+DigitalOut led(LED1); //button press
+DigitalOut led2(LED2); //fsm thread
+DigitalOut led3(LED3);
+DigitalOut led4(LED4); //timeout thread
+
+
+
+void timeout_event(void const *n)
+{
+ //generate local display info
+ lcd.cls();
+ lcd.locate(40,5);
+ lcd.printf("timeout event");
+
+
+ //event via a message queue
+ message_t *message = mpool.alloc();
+ message->event = TIME_OUT;
+ queue.put(message);
+
+ led4 = !led4;
+
+}
+
+
+void button_event_thread(void const *argument) {
+ while (true) {
+
+ //debouce delay for switch
+ Thread::wait(250);
+
+ if (fire)
+ {
+
+ lcd.cls();
+ lcd.locate(0,1);
+ lcd.printf("button event");
+
+
+ //event via a message queue
+ message_t *message = mpool.alloc();
+ message->event = BUTTON_PRESS;
+ queue.put(message);
+
+ led = !led;
+ }
+ }
+}
+
+
+int main (void) {
+
+//Thread fsm(fsm_thread);
+Thread button_event(button_event_thread);
+RtosTimer timer(timeout_event, osTimerPeriodic, (void *)0);
+
+int state = STATE_0;
+
+
+ //start timer with a 2 sec timeout
+ timer.start(2000);
+
+ while (true) {
+ switch(state)
+ {
+ case STATE_0:
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("FSM START");
+
+ osEvent evt = queue.get();
+ if (evt.status == osEventMessage)
+ {
+ message_t *message = (message_t*)evt.value.p;
+
+
+ if(message->event == BUTTON_PRESS) state = STATE_1;
+ if(message->event == TIME_OUT) state = STATE_0;
+
+ mpool.free(message);
+ }
+
+ timer.start(2000);
+
+ break;
+
+ case STATE_1:
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("FSM COUNTER 1");
+
+ evt = queue.get();
+ if (evt.status == osEventMessage)
+ {
+ message_t *message = (message_t*)evt.value.p;
+
+
+ if(message->event == BUTTON_PRESS) state = STATE_2;
+ if(message->event == TIME_OUT) state = STATE_0;
+
+ mpool.free(message);
+ }
+
+
+ timer.start(2000);
+
+ break;
+
+ case STATE_2:
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("FSM COUNTER 2");
+
+ evt = queue.get();
+ if (evt.status == osEventMessage)
+ {
+ message_t *message = (message_t*)evt.value.p;
+
+
+ if(message->event == BUTTON_PRESS) state = STATE_3;
+ if(message->event == TIME_OUT) state = STATE_1;
+
+ mpool.free(message);
+ }
+
+ timer.start(2000);
+
+ break;
+
+ case STATE_3:
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("FSM COUNTER 3");
+
+ evt = queue.get();
+ if (evt.status == osEventMessage)
+ {
+ message_t *message = (message_t*)evt.value.p;
+
+
+ if(message->event == BUTTON_PRESS) state = STATE_4;
+ if(message->event == TIME_OUT) state = STATE_2;
+
+ mpool.free(message);
+ }
+
+
+ timer.start(2000);
+
+ break;
+
+ case STATE_4:
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("FSM COUNTER 4");
+
+ evt = queue.get();
+ if (evt.status == osEventMessage)
+ {
+ message_t *message = (message_t*)evt.value.p;
+
+
+ if(message->event == BUTTON_PRESS) state = STATE_5;
+ if(message->event == TIME_OUT) state = STATE_3;
+
+ mpool.free(message);
+ }
+
+ timer.start(2000);
+
+ break;
+
+ case STATE_5:
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("FSM COUNTER 5");
+
+ evt = queue.get();
+ if (evt.status == osEventMessage)
+ {
+ message_t *message = (message_t*)evt.value.p;
+
+
+ if(message->event == BUTTON_PRESS) state = STATE_5;
+ if(message->event == TIME_OUT) state = STATE_4;
+
+ mpool.free(message);
+ }
+
+
+
+ timer.start(2000);
+
+ break;
+
+
+
+
+ }//End of switch
+
+ //toggle led for local testing
+ led2= !led2;
+
+ }//end of while(1)
+
+
+}