jim hamblen
This demo uses the mbed RTOS to run eight threads (including main). The threads are using different I/O devices on the application board. Several of the threads output to the LCD and an OS mutex lock is used to control access to the LCD and make the LCD thread safe.
Dependencies: C12832_lcd LCD_fonts mbed-rtos mbed
Fork of
lab1
by 
Peter Drescher
Diff: main.cpp
- Revision:
- 0:f6a57b843f79
- Child:
- 1:1c6a9eaf55b5
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Oct 15 21:48:28 2012 +0000
@@ -0,0 +1,79 @@
+// example to test the mbed Lab Board lcd
+
+#include "mbed.h"
+#include "rtos.h"
+#include "Small_6.h"
+#include "Small_7.h"
+#include "Arial_9.h"
+#include "stdio.h"
+
+
+Serial pc(USBTX, USBRX);
+
+#include "C12832_lcd.h"
+
+// LCD object
+C12832_LCD LCD("LCD");
+
+
+
+// print data into first line and wait for 1s
+void thread1(void const *args)
+{
+ int i;
+ while(true) { // thread loop
+ _lock
+ LCD.locate(0,0);
+ LCD.set_font((unsigned char*) Small_6);
+ printf("Thread 1 count : %d",i);
+ LCD.copy_to_lcd();
+ _unlock
+ i++;
+ Thread::wait(1000);
+ }
+}
+
+// print data into third line and wait for 0,5s
+void thread2(void const *args)
+{
+ int i;
+ while(true) { // thread loop
+ _lock
+ LCD.locate(0,20);
+ LCD.set_font((unsigned char*) Arial_9);
+ printf("Thread 2 count : %d",i);
+ LCD.copy_to_lcd();
+ _unlock
+ i++;
+ Thread::wait(500);
+ }
+}
+
+
+
+
+int main()
+{
+ int j;
+ pc.printf("Test LCD \n\r");
+
+ LCD.set_orientation(1);
+ LCD.claim(stdout); // send stdout to the LCD display
+
+ // start thread1
+ Thread t1(thread1);
+ // start thread2
+ Thread t2(thread2);
+
+ while(true) { // this is the third thread
+ _lock
+ LCD.locate(0,10);
+ LCD.set_font((unsigned char*) Small_7);
+ printf("Thread3 count : %d",j);
+ LCD.copy_to_lcd();
+ _unlock
+ j++;
+ Thread::wait(1500);
+ }
+
+}