No.9 Robotics / Mbed 2 deprecated Robotics_LED

2016/2/29 LED Yu-Hsuan edited

Dependencies:   mbed

main.cpp@2:9e5b526db3aa, 2016-03-03 (annotated)

Committer:
winstonkuo
Date:
Thu Mar 03 05:09:48 2016 +0000
Revision:
2:9e5b526db3aa
Parent:
1:d5cf0fdad0f1
Child:
3:b81cc31bfcba
2016/3/3; LED; Winston edited

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ChangYuHsuan 0:bf4612a77210 1 /*LAB_LED*/
ChangYuHsuan 0:bf4612a77210 2 #include "mbed.h"
ChangYuHsuan 0:bf4612a77210 3
ChangYuHsuan 0:bf4612a77210 4 #define LED_1 PA_5
ChangYuHsuan 0:bf4612a77210 5 #define LED_2 D12
ChangYuHsuan 0:bf4612a77210 6
ChangYuHsuan 0:bf4612a77210 7 DigitalOut led_1(LED_1);
ChangYuHsuan 0:bf4612a77210 8 DigitalOut led_2(LED_2);
ChangYuHsuan 0:bf4612a77210 9 Ticker timer_1;
winstonkuo 2:9e5b526db3aa 10 bool light;
ChangYuHsuan 0:bf4612a77210 11
ChangYuHsuan 0:bf4612a77210 12 int timer_1_counter;
ChangYuHsuan 0:bf4612a77210 13
ChangYuHsuan 0:bf4612a77210 14 void init_IO(void)
ChangYuHsuan 0:bf4612a77210 15 {
ChangYuHsuan 0:bf4612a77210 16 led_1 = 0;
ChangYuHsuan 0:bf4612a77210 17 led_2 = 0;
ChangYuHsuan 0:bf4612a77210 18
ChangYuHsuan 0:bf4612a77210 19 timer_1_counter = 0;
winstonkuo 2:9e5b526db3aa 20 light = false;
ChangYuHsuan 0:bf4612a77210 21 }
ChangYuHsuan 0:bf4612a77210 22
ChangYuHsuan 0:bf4612a77210 23 void timer_1_interrupt()
ChangYuHsuan 0:bf4612a77210 24 {
ChangYuHsuan 0:bf4612a77210 25 timer_1_counter += 1;
ChangYuHsuan 0:bf4612a77210 26 }
ChangYuHsuan 0:bf4612a77210 27
ChangYuHsuan 0:bf4612a77210 28 void init_TIMER(void)
ChangYuHsuan 0:bf4612a77210 29 {
ChangYuHsuan 0:bf4612a77210 30 timer_1.attach_us(&timer_1_interrupt, 1000.0);//1ms interrupt period (1 KHz)
ChangYuHsuan 0:bf4612a77210 31 }
ChangYuHsuan 0:bf4612a77210 32
ChangYuHsuan 0:bf4612a77210 33 int main()
ChangYuHsuan 0:bf4612a77210 34 {
ChangYuHsuan 0:bf4612a77210 35 init_IO();
ChangYuHsuan 0:bf4612a77210 36 init_TIMER();
ChangYuHsuan 0:bf4612a77210 37
ChangYuHsuan 0:bf4612a77210 38 while(1)
ChangYuHsuan 0:bf4612a77210 39 {
ChangYuHsuan 0:bf4612a77210 40 if(timer_1_counter == 1000)
ChangYuHsuan 0:bf4612a77210 41 {
ChangYuHsuan 0:bf4612a77210 42 // led_1 flashes
winstonkuo 2:9e5b526db3aa 43 if(light == false)
winstonkuo 2:9e5b526db3aa 44 {
winstonkuo 2:9e5b526db3aa 45 led_1 = 1;
winstonkuo 2:9e5b526db3aa 46 light = true;
winstonkuo 2:9e5b526db3aa 47 }
winstonkuo 2:9e5b526db3aa 48 else
winstonkuo 2:9e5b526db3aa 49 {
winstonkuo 2:9e5b526db3aa 50 led_1 = 0;
winstonkuo 2:9e5b526db3aa 51 light = false;
winstonkuo 2:9e5b526db3aa 52 }
ChangYuHsuan 0:bf4612a77210 53
ChangYuHsuan 0:bf4612a77210 54 // reset timer_1_counter to zero
ChangYuHsuan 0:bf4612a77210 55 timer_1_counter = 0;
ChangYuHsuan 0:bf4612a77210 56 }
ChangYuHsuan 0:bf4612a77210 57 }
ChangYuHsuan 0:bf4612a77210 58 }