Mike Moore
homework 7
Dependencies: mbed-rtos mbed C12832_lcd LM75B
Diff: main.cpp
- Revision:
- 114:fbe9ef1630c1
- Parent:
- 113:8111b9cd15ce
- Child:
- 115:6390d9b9be07
--- a/main.cpp Thu Sep 12 21:29:49 2013 +0000
+++ b/main.cpp Thu Sep 12 21:44:27 2013 +0000
@@ -336,20 +336,29 @@
//---
case FSM_IDLE : // IDLE.
{
- led0 = 0;
if (dFSMstate != dFSMstateLast) // if just entered state.
- {
+ {
+ // live read of temperature,
+ // allow total time adjustments,
+ // clear total time.
+
queueTemperatureControl.put((int *) TEMP_READ,1);
queueSuppressTimeAdjust.put((int*) 0,1);
queueClearTotalTime.put ((int*) 1,1);
}
+ // set global LCD data.
giLCD.dTotalCookTime = giRemainingTime.dTotalTime;
giLCD.dRemainingTime = 0; // suppress remaining time display.
-// giLCD.fCelsius = 0;
-
+
+ // remaining time loaded with total time.
giRemainingTime.cControl = RT_PRELOAD;
dFSMstateLast = dFSMstate; // determine next state.
+
+ // to FSM_COOK if the start button was
+ // pressed, the door is closed, and the
+ // remaining time is more than zero.
+
if ((dButtonStart == 1) && (dDoorOpen == 0) && (giRemainingTime.dTotalTime > 0)) dFSMstate = FSM_COOK;
break;
}
@@ -358,22 +367,34 @@
{
if (dFSMstate != dFSMstateLast) // if just entered state.
{
+ // start decrementing remaining time.
+ // temperature synthesizer is now
+ // calculating the temperature,
+ // user can no longer adjust total time.
giRemainingTime.cControl = RT_DECREMENT;
queueTemperatureControl.put((int *) TEMP_CALC,1);
queueSuppressTimeAdjust.put((int*) 1,1);
}
+ // update global LCD data.
giLCD.dTotalCookTime = giRemainingTime.dTotalTime;
giLCD.dRemainingTime = giRemainingTime.dRemainingTime;
- // giLCD.fCelsius = 0;
+
dFSMstateLast = dFSMstate; // determine next state.
+
+ // pause on door-open if remaining time.
+
if ((dDoorOpen == 1) && (dRemainingTime > 0)) dFSMstate = FSM_PAUSE;
else
+
+ // stop button -> idle state.
if (dButtonStop) dFSMstate = FSM_IDLE;
else
+
+ // beeper state once countdown complete.
if (dRemainingTime <= 0) dFSMstate = FSM_DONE;
break;
}
@@ -383,20 +404,29 @@
if (dFSMstate != dFSMstateLast) // if just entered state.
{
+ // suspend synthesized temperature calculation.
queueTemperatureControl.put((int *) TEMP_FREEZE,1);
}
-
+ // update LCD globals.
giLCD.dTotalCookTime = giRemainingTime.dTotalTime;
giLCD.dRemainingTime = giRemainingTime.dRemainingTime;
- // giLCD.fCelsius = 0;
- giRemainingTime.cControl = RT_PAUSE;
- // determine next state.
- dFSMstateLast = dFSMstate;
+
+ giRemainingTime.cControl = RT_PAUSE;// pause remaining time countdown.
+
+ dFSMstateLast = dFSMstate; // determine next state.
+
+
+ // continue if user hits start button,
+ // and the door is closed, and there
+ // is some remaining time.
+
if ((dButtonStart == 1) && (dDoorOpen == 0) && (giRemainingTime.dTotalTime > 0)) dFSMstate = FSM_CONTINUE;
else
+
+ // to idle if user hits stop button.
if (dButtonStop) dFSMstate = FSM_IDLE;
break;
}
@@ -407,22 +437,29 @@
if (dFSMstate != dFSMstateLast) // if just entered state.
{
+ // continue calculating synthetic temperature.
queueTemperatureControl.put((int *) TEMP_CALC,1);
}
-
+ // update LCD globals.
giLCD.dTotalCookTime = giRemainingTime.dTotalTime;
giLCD.dRemainingTime = giRemainingTime.dRemainingTime;
- // giLCD.fCelsius = 0;
-
+
+ // continue decrementing time.
giRemainingTime.cControl = RT_DECREMENT;
- // determine next state.
- dFSMstateLast = dFSMstate;
+
+ dFSMstateLast = dFSMstate; // determine next state.
+
+ // beep state when no more time.
+
if (dRemainingTime <= 0) dFSMstate = FSM_DONE;
else
+ // user stop causes jump to idle.
if (dButtonStop) dFSMstate = FSM_IDLE;
else
+ // back to pause if door open,
+ // and there's remaining time.
if ((dDoorOpen == 1) && (dRemainingTime > 0)) dFSMstate = FSM_PAUSE;
break;
}
@@ -431,33 +468,24 @@
//---
case FSM_DONE : // DONE.
{
- led0 = 1;
- led3 = 0;
if (dFSMstate != dFSMstateLast) // if just entered state.
{
-
+ // freeze synthetic temperature.
queueTemperatureControl.put((int *) TEMP_FREEZE,1);
-
-
- giRemainingTime.cBeepEnable = 1;
+ giRemainingTime.cBeepEnable = 1; // initiate beep.
beepTimer.reset(); // clear the beep timer.
}
-
+ // update LCD globals.
giLCD.dTotalCookTime = giRemainingTime.dTotalTime;
giLCD.dRemainingTime = giRemainingTime.dRemainingTime;
-// giLCD.fCelsius = 0;
-
-
+ giRemainingTime.cControl = RT_CLEAR;// clear remaining time. (needed?)
+
+ dFSMstateLast = dFSMstate; // determine next state.
- giRemainingTime.cControl = RT_CLEAR;
- // determine next state.
- dFSMstateLast = dFSMstate;
+ // to idle once beeper is done.
if (beepTimer.read() >= BEEPTIME) {dFSMstate = FSM_IDLE; giRemainingTime.cBeepEnable = 0;}
- else dFSMstate = FSM_DONE;
-
- led3 = 1;
-
+ else dFSMstate = FSM_DONE; // (else stay here).
break;
}
//---
@@ -473,32 +501,26 @@
// interpret as integer, not pointer.
dButtonState = (int) queueEvent.value.p;
-
-
if (dButtonState == MSG_START)
{
- dButtonStart = 1;
+ dButtonStart = 1; // copy-in start info.
dButtonStop = 0;
-
- // if the door is open, ignore
- // and cancel 'start' state.
- if (dDoorOpen) dButtonStart = 0;
+ if (dDoorOpen) dButtonStart = 0; // cancel start if door open.
}
if (dButtonState == MSG_STOP)
{
- dButtonStart = 0;
+ dButtonStart = 0; // copy-in stop state.
dButtonStop = 1;
- queueClearTotalTime.put ((int*) 1,1);
+ queueClearTotalTime.put((int*) 1,1);// clear total time on stop.
}
- if (dButtonState == MSG_OPEN)
- {
- // if the door opens, clear current 'start' state.
+ if (dButtonState == MSG_OPEN) // if the door opens, clear current 'start' state.
+ {
dDoorOpen = 1;
dButtonStart = 0;
}
- if (dButtonState == MSG_CLOSED)
+ if (dButtonState == MSG_CLOSED) // detect door closed.
{
dDoorOpen = 0;
}
@@ -508,15 +530,11 @@
{
dButtonStart = 0;
dButtonStop = 0;
-// dDoorOpen = 0;
-
-
}
// fetch from global scope.
dRemainingTime = giRemainingTime.dRemainingTime;
- // pipeline variable.
Thread::wait(THREAD_5_WAITmS); // multitasking.
} // thread loop.
} // threadCookStateFSM.