Case study Embedded System Design
finished
Dependencies: C12832 DebouncedInterrupt MMA7660 mbed-rtos mbed
Diff: main.cpp
- Revision:
- 1:57407e283b03
- Parent:
- 0:151f0dbf3ca8
- Child:
- 2:ff8262f6a385
--- a/main.cpp Thu Feb 26 15:00:42 2015 +0000
+++ b/main.cpp Mon Mar 02 12:56:15 2015 +0000
@@ -1,19 +1,25 @@
#include "mbed.h"
#include "rtos.h"
#include "C12832.h"
+#include "MMA7660.h"
+
+
+
//FINITE STATE MACHINE EVENTS
#define NO_EVENT 0
#define TIME_OUT 1
#define BUTTON_PRESS 2
+#define TILT 3
+#define PUSH 4
//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
+
+//Mutex
+Mutex LED_RGB;
//pass event via message queue
typedef struct {
@@ -23,26 +29,29 @@
MemoryPool<message_t, 16> mpool;
Queue<message_t, 16> queue;
-//button plus local display
+//Digital input
DigitalIn coin(p14);
+InterruptIn button(p15);
+//Analog input
+AnalogIn push(p19);
+
+//Setup hardware
+MMA7660 MMA(p28, p27);
C12832 lcd(p5, p7, p6, p8, p11);
-//leds for debug
+//RGB LEDs
DigitalOut led_R(p23); //LED RGB red
DigitalOut led_G(p24); //LED RGB green
+DigitalOut led_B(p25); //LED RGB Blue
+//leds for debug
DigitalOut led4(LED4); //LED RGB green
DigitalOut led3(LED3); //LED RGB green
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();
@@ -59,17 +68,11 @@
while (true) {
//debouce delay for switch
-
if (coin)
{
button_press = 1;
if (button_press == 1 & coin == 0)
{
-
- lcd.cls();
- lcd.locate(0,1);
- lcd.printf("button event");
-
//event via a message queue
message_t *message = mpool.alloc();
@@ -80,44 +83,170 @@
button_press = 0;
}
}
- else
- {
- //button_press = coin;
- //Thread::wait(100);
- }
+
+
}
}
+
+void tilt_event_thread(void const *argument) {
+ float tilt_value_Y = MMA.y();
+ float tilt_value_X = MMA.x();
+ while (true)
+ {
+
+ //debouce delay for switch
+ Thread::wait(2000);
+
+ if (tilt_value_Y <= MMA.y()-0.1 ^ tilt_value_Y >= MMA.y()+0.1 )
+ {
+
+ //event via a message queue
+ message_t *message = mpool.alloc();
+ message->event = TILT;
+ queue.put(message);
+
+ led3 = !led3;
+ tilt_value_Y = MMA.y();
+ }
+
+
+ }
+
+}
+
+void push_event_thread(void const *argument) {
+ float push_value = push.read();
+ while (true)
+ {
+
+ //debouce delay for switch
+ Thread::wait(1000);
+ if (push_value >= push.read()- 0.05 ^ push_value <= push.read()+ 0.05 )
+ {
+ push_value = push.read();
+ //event via a message queue
+ message_t *message = mpool.alloc();
+ message->event = PUSH;
+ queue.put(message);
+ led3 = !led3;
+
+ }
+ }
+
+
+}
+void flash_led_thread(void const *argument) {
+ while (true)
+ {
+ Thread::signal_wait(0x1);
+
+ for (int i=0;i<=20;i++)
+ {
+ LED_RGB.lock();
+ led_R = !led_R;
+ LED_RGB.unlock();
+ Thread::wait(100);
+ }
+ LED_RGB.lock();
+ led_R = 1;
+ LED_RGB.unlock();
+ }
+
+}
+
+void Button_Inter() {
+
+//Flash_LED_Thread.signal_set(0x1);
+
+}
+
+
int main (void) {
//Thread fsm(fsm_thread);
Thread button_event(button_event_thread);
+Thread tilt_event(tilt_event_thread);
+Thread push_event(push_event_thread);
+Thread Flash_LED_Thread(flash_led_thread);
RtosTimer timer(timeout_event, osTimerPeriodic, (void *)0);
+//Interrupts
+button.rise(&Button_Inter);
+
int state = STATE_0;
-
+LED_RGB.lock();
+led_R=1;
+led_G=1;
+led_B=1;
+LED_RGB.unlock();
+
+if (MMA.testConnection()) //setup accler
+
//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");
-
+ case STATE_0:
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;
-
+ if(message->event == BUTTON_PRESS)
+ {
+ LED_RGB.lock();
+ led_G=0;
+ led_R=1;
+ LED_RGB.unlock();
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("Enter");
+ state = STATE_1;
+ }
+ if(message->event == PUSH)
+ {
+ LED_RGB.lock();
+ led_G=1; //off
+ led_R=0; //on
+ LED_RGB.unlock();
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("Insert Coin push");
+ state = STATE_0;
+ }
+ if(message->event == TILT)
+ {
+ LED_RGB.lock();
+ led_G=1;
+ led_R=1;
+ LED_RGB.unlock();
+ lcd.cls();
+ lcd.locate(0,0);
+ lcd.printf("STOP");
+ lcd.locate(0,10);
+ lcd.printf("Please Insert Coin");
+ Flash_LED_Thread.signal_set(0x1);
+ state = STATE_2;
+ }
+ if(message->event == TIME_OUT)
+ {
+ LED_RGB.lock();
+ led_G=1;
+ led_R=0;
+ LED_RGB.unlock();
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("Hello");
+ state = STATE_0;
+ }
mpool.free(message);
}
@@ -126,41 +255,80 @@
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;
-
+ if(message->event == BUTTON_PRESS)
+ {
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("Thanks");
+ state = STATE_1;
+ }
+ if(message->event == PUSH)
+ {
+ LED_RGB.lock();
+ led_R=0;
+ led_G=1;
+ LED_RGB.unlock();
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("Hello");
+ state = STATE_0;
+ }
+
mpool.free(message);
}
-
- timer.start(2000);
+ 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;
-
+ if(message->event == BUTTON_PRESS)
+ {
+ LED_RGB.lock();
+ led_G=0;
+ led_R=1;
+ LED_RGB.unlock();
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("Enter");
+ state = STATE_1;
+
+ }
+ if(message->event == TILT)
+ {
+ lcd.cls();
+ lcd.locate(0,0);
+ lcd.printf("STOP");
+ lcd.locate(0,10);
+ lcd.printf("Please Insert Coin");
+ state = STATE_2;
+ Flash_LED_Thread.signal_set(0x1);
+ }
+ if(message->event == TIME_OUT)
+ {
+ LED_RGB.lock();
+ led_R=0;
+ led_G=1;
+ LED_RGB.unlock();
+ lcd.cls();
+ lcd.locate(0,2);
+ lcd.printf("Insert Coin");
+ state = STATE_0;
+ }
mpool.free(message);
}
@@ -168,71 +336,8 @@
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