Revision 0:674c09240a19, committed 2020-06-20

Comitter:

ciaranom

Date:

Sat Jun 20 11:15:38 2020 +0000

Commit message:

Lab exercise 2.3

Changed in this revision

diff -r 000000000000 -r 674c09240a19 C12832.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/C12832.lib	Sat Jun 20 11:15:38 2020 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/askksa12543/code/C12832/#990d5eec2ef6

diff -r 000000000000 -r 674c09240a19 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Jun 20 11:15:38 2020 +0000
@@ -0,0 +1,49 @@
+#include "mbed.h"
+#include "C12832.h"
+
+InterruptIn joystickcenter(p14);
+InterruptIn button(p9);
+DigitalOut led(LED1);
+DigitalOut flash(LED4);
+C12832 lcd(p5, p7, p6, p8, p11);
+Timer debounce;
+
+int x; 
+
+
+void flip() {
+ lcd.cls();
+ led = !led; // toggles the led when the joystick button is pressed.
+ x = 1;
+ //wait(0.5);
+
+ if (debounce.read_ms() < 10000){
+  //lcd.locate(0,0);
+    //lcd.printf("Debounce value: %.3f  \n"+ debounce.read_ms());
+ }
+     debounce.reset();
+}
+int main() {
+ 
+ joystickcenter.rise(&flip); // attach the function address to the rising edge
+ button.mode(PullUp); // With this, no external pullup resistor needed
+ button.rise(&flip); // attach the function address to the rising edge
+ 
+ while(1) { // wait around, interrupts will interrupt this!
+ flash = !flash; // turns LED4 on if off, off if on
+ wait(0.25); // the instruction to wait for a quarter-second
+ if (x==1)
+ {
+     lcd.printf("Variable set");
+     x=0;
+}
+ }
+ }
+
+
+//What's needed is a global variable with its own name, for example:
+//int x;
+
+//Now, you set x to 1 inside the flip() function. In main(), inside the infinite loop starting with while (1) { , you check whether x ==1 and if it is, you print to the LCD and set x to 0.
+
+//(Be very careful about this. x=1 sets x to 1. x==1 compares x to 1.)
\ No newline at end of file

diff -r 000000000000 -r 674c09240a19 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sat Jun 20 11:15:38 2020 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file