Teaching Assistant
This program is a simple version of an LED dimmer that allows the user to increase or decrease the on-board LED brightness using a keyboard.
Revision 0:9ac9735e14c3, committed 2015-01-22
- Comitter:
- 302Instructor
- Date:
- Thu Jan 22 19:55:25 2015 +0000
- Commit message:
- 1/22/2015
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r 9ac9735e14c3 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Jan 22 19:55:25 2015 +0000
@@ -0,0 +1,27 @@
+#include "mbed.h"
+
+Serial pc(USBTX, USBRX);
+PwmOut led(LED1);
+
+float brightness = 0.0;
+
+int main() {
+ pc.printf("Press '+' to turn LED1 brightness up, '-' to turn it down \n\r");
+ led.period(0.02);
+ while(1) {
+ char c = pc.getc();
+ if ((c == '+') && (brightness > 0.0)) {
+ brightness -= 0.1;
+ led.write(brightness);
+ printf("%f",brightness);
+ printf("\n\rUP");
+ }
+ if ((c == '-') && (brightness < 0.999)) {
+ brightness += 0.1;
+ led.write(brightness);
+ printf("%f",brightness);
+ printf("\n\rDOWN");
+ }
+ }
+}
+
\ No newline at end of file
diff -r 000000000000 -r 9ac9735e14c3 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Jan 22 19:55:25 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/031413cf7a89 \ No newline at end of file