璇 李
AUP Xi'an Lab2
Revision 0:65e58765adf7, committed 2015-05-21
- Comitter:
- gyth
- Date:
- Thu May 21 02:23:19 2015 +0000
- Commit message:
- AUP Xi'an Lab2
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 |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu May 21 02:23:19 2015 +0000
@@ -0,0 +1,39 @@
+#include "mbed.h"
+
+PwmOut led(D5);
+DigitalIn button_up(A2);
+DigitalIn button_center(D4);
+DigitalIn button_down(A3);
+Serial pc(SERIAL_TX, SERIAL_RX);
+
+double brightness = 1.0;
+double brightness_inc = 0.1;
+
+int main()
+{
+ int bt_flag = 0;
+ pc.baud(9600);
+ pc.printf("Hello PWM!\r\n");
+ // Set PWM
+ led.write(brightness);
+
+ while (1) {
+ bt_flag = 1;
+ if(button_up==1)
+ brightness -= brightness_inc;
+ else if(button_down==1)
+ brightness += brightness_inc;
+ else if(button_center==1)
+ brightness = (brightness>0.5)?1.0:0.0;
+ else
+ bt_flag = 0;
+ if(bt_flag==1)
+ {
+ brightness = (brightness>1.0)?0.0:brightness;
+ brightness = (brightness<0.0)?1.0:brightness;
+ led.write(brightness);
+ pc.printf("Brightness = %.1f\r\n", 1.0-brightness);
+ }
+ wait(0.2); // 200 ms
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu May 21 02:23:19 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/433970e64889 \ No newline at end of file