tao yan
this is my final project in a class. this program is used to analog a transportation schedule systems
Fork of
app-board-Joystick-with-LCD
by 
Kim Sehee
Revision 1:7af7e8d3a37f, committed 2014-06-05
- Comitter:
- yantao
- Date:
- Thu Jun 05 21:34:40 2014 +0000
- Parent:
- 0:3cb0e69f1806
- Commit message:
- this programm is my final project in a ucsc-extension's course: embedded IO programming.; the programm is used to analog 4 roads schedule.each time only one road is opened for transportation.; road1,road 2,and road3 are polled scheduled periodically
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Tue Oct 08 11:13:01 2013 +0000
+++ b/main.cpp Thu Jun 05 21:34:40 2014 +0000
@@ -1,6 +1,19 @@
#include "mbed.h"
#include "C12832_lcd.h"
+//program description
+//author: TAO YAN
+//date:June 5 2014
+//this program is used to analog 4 roads usage
+//there are 4 roads: road1, road2, road3 and vip_road
+// each time only one road is opened for transportation
+//road1,road 2,and road3 are polled scheduled periodically: road1->road2->road3->road1->road2->road3
+//however, if programm detected vip road's request open signal:by push center button
+// program will act as an preemptive OS, hang current road, and schedule vip road
+// when vip road's transportation finished, system will resume the previous road that was interrupted by the vip road: such as below
+// road1 run--->system detects vip road signal->vip road run->road1 run->road2 run->road3 run->road1 run->
+//road2 run->ystem detects vip road signal->vip road run->road2 run->road3 run->road1 run
+
// LCD and Joystick Setting
C12832_LCD lcd;
@@ -8,34 +21,192 @@
BusIn Down(p12);
BusIn Left(p13);
BusIn Right(p16);
-BusOut Reset(p14);
+BusIn Center(p14);
+
+
+
+BusOut leds(LED1,LED2,LED3,LED4);
// Custom Function
void initialize();
-// Main
+
+
+typedef enum
+{
+ Road1_can_Pass=0,
+ Road2_can_Pass,
+ Road3_can_Pass,
+ vip_Road4_mustPass_now,
+
+}STATE;
+
+#define switch_to_vip_road 1
+#define road1 1
+#define road2 2
+#define road3 3
+
int main()
{
+ int index=0,is_now_swith_vip_road=0,return_from_vip_road=0;
+ int current_state = Road1_can_Pass;
initialize();
- while(1)
- {
- lcd.locate(0,15); // Set Location print a text
- // Operations by Joystic
- if (Up)
- lcd.printf("UP");
- if (Down)
- lcd.printf("Down");
- if (Left)
- lcd.printf("Left");
- if (Right)
- lcd.printf("Right");
- if (Reset)
- initialize();
- }
+ while(1)
+ {
+ lcd.locate(0,15);
+ switch(current_state)
+ {
+
+ case Road1_can_Pass:
+ is_now_swith_vip_road=0;
+ return_from_vip_road=0;
+ leds=1;
+ initialize();
+ lcd.printf("now road1 open\n");
+ for(index=0;index<660000;index++)
+ {
+ if(Center)
+ {
+ leds=0;
+ is_now_swith_vip_road=switch_to_vip_road;
+ return_from_vip_road=road1;
+ break;
+ }
+ leds!=leds;
+ }
+ if(is_now_swith_vip_road==switch_to_vip_road) //if button center entered, means intrruptedbyviproad,return to road1 when vip road transoirtation finished
+ {
+ current_state=vip_Road4_mustPass_now;
+ initialize();
+ lcd.printf("confirm vip road request open signal, switch to vip road transportation\n");
+ wait(1);
+ initialize();
+ lcd.printf("when vip road transportation finished, switched return to road1\n");
+ wait(1);
+ }
+ else
+ {
+ current_state = Road2_can_Pass;
+ initialize();
+ lcd.printf("road1 tranportation will finished,now will switch to road 2\n");//sequence:road1, road2 ,road3 periodically
+ wait(1);
+ }
+ break;
+
+
+
+
+ case Road2_can_Pass:
+ is_now_swith_vip_road=0;
+ return_from_vip_road=0;
+ leds=2;
+ initialize();
+ lcd.printf("now road2 open\n");
+ for(index=0;index<660000;index++)
+ {
+ if(Center)
+ {
+ leds=0;
+ is_now_swith_vip_road=switch_to_vip_road;
+ return_from_vip_road=road2;
+ break;
+ }
+ leds!=leds;
+ }
+ if(is_now_swith_vip_road==switch_to_vip_road)
+ {
+ current_state=vip_Road4_mustPass_now;
+ initialize();
+ lcd.printf("confirm vip road request open signal, switch to vip road transportation\n");
+ wait(1);
+ initialize();
+ lcd.printf("when vip road transportation finished, switched return to road2\n");
+ wait(1);
+ }
+ else
+ {
+ current_state = Road3_can_Pass;
+ initialize();
+ lcd.printf("road2 tranportation will finished,now will switch to road 3 transportation\n");//sequence:road1, road2 ,road3 periodically
+ wait(1);
+ }
+ break;
+
+
+ case Road3_can_Pass:
+ is_now_swith_vip_road=0;
+ return_from_vip_road=0;
+ leds=4;
+ initialize();
+ lcd.printf("now road3 open\n");
+ for(index=0;index<660000;index++)
+ {
+ if(Center)
+ {
+ leds=0;
+ is_now_swith_vip_road=switch_to_vip_road;
+ return_from_vip_road=road3;
+ break;
+ }
+ leds!=leds;
+ }
+ if(is_now_swith_vip_road==switch_to_vip_road)
+ {
+ current_state=vip_Road4_mustPass_now;
+ initialize();
+ lcd.printf("confirm vip road request open signal, switch to vip road transportation\n");
+ wait(1);
+ initialize();
+ lcd.printf("when vip road transportation finished, switched return to road3\n");
+ wait(1);
+ }
+ else
+ {
+ current_state = Road1_can_Pass;
+ initialize();
+ lcd.printf("road3 tranportation will finished,now will periodically switch to road 1 transportation\n");//sequence:road1, road2 ,road3 periodically
+ wait(1);
+ }
+ break;
+ case vip_Road4_mustPass_now:
+ leds=8;
+ initialize();
+ lcd.printf("now vip road open\n");
+ for(index=0;index<660000;index++)
+ {
+ leds!=leds;
+ }
+ if(return_from_vip_road==road1)
+ {
+ current_state = Road1_can_Pass;
+ initialize();
+ lcd.printf("now vip road transportation finished, switched return to road1\n");
+ wait(1);
+ }
+ else if(return_from_vip_road==road2)
+ {
+ current_state = Road2_can_Pass;
+ initialize();
+ lcd.printf("now vip road transportation finished, switched return to road2\n");
+ wait(1);
+ }
+ else if(return_from_vip_road==road3)
+ {
+ current_state = Road3_can_Pass;
+ initialize();
+ lcd.printf("now vip road transportation finished, switched return to road3\n");
+ wait(1);
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+ return 0;
}
void initialize()
{
lcd.cls();
- lcd.locate(0,0);
- lcd.printf("Joystic and LCD Controller!");
-}
\ No newline at end of file
+ lcd.locate(0,0);
+}