Simple Hello World program that outputs "Hello World!" every five seconds to the serial debug port, and blinks at the user defined hertz.
Dependencies: mbed-src
main.cpp
- Committer:
- agoel
- Date:
- 2015-07-06
- Revision:
- 0:4882b9e3f2cb
File content as of revision 0:4882b9e3f2cb:
#include "mbed.h" /* Simple Hello World program that outputs "Hello World!" every five seconds to the serial debug port, and blinks at the user defined hertz */ // LED blink rate: higher -> faster blinking #define LED_BLINK_RATE 8 //Hertz //Define the LED pin output //DigitalOut data00(D0); DigitalOut data00(PA_3); //Blinds D0 LED //DigitalOut data01(D1); DigitalOut data01(PA_2); //Blinds D1 LED //DigitalOut data02(D2); //DigitalOut data02(PB_15); //Blinds D2 LED //DigitalOut data03(D3); DigitalOut data03(PA_0); //Blinds D3 LED //DigitalOut data04(D4); DigitalOut data04(PA_7); //Blinds D4 LED //DigitalOut data05(D5); DigitalOut data05(PA_9); //Blinds D5 LED //DigitalOut data06(D6); DigitalOut data06(PA_1); //Blinds D6 LED //DigitalOut data07(D7); DigitalOut data07(PA_8); //Blinds D7 LED //DigitalOut data08(D8); DigitalOut data08(PB_1); //Blinds D8 LED int temp; //Define timers Timer print_timer; Timer led_timer; int main() { data00 = 1; //Initialize LED off data01 = 1; //Initialize LED off // data02 = 1; //Initialize LED off data03 = 1; //Initialize LED off data04 = 1; //Initialize LED off data05 = 1; //Initialize LED off data06 = 1; //Initialize LED off data07 = 1; //Initialize LED off data08 = 0; //Initialize LED off print_timer.start(); //Start timers, will count until stopped led_timer.start(); while (1) { if (print_timer.read() >= 5) { //print_timer.read() returns time in seconds printf("Hello World!\n"); print_timer.reset(); //Resets timer count to 0 } //Calculates interval needed for specified frequency if ( led_timer.read_ms() >= (2000.0/(2*LED_BLINK_RATE))) { temp = data01; //Invert LED output data01 = data00; //Invert LED output data00 = data03; //Invert LED output data03 = data06; //Invert LED output data06 = data08; //Invert LED output data08 = data05; //Invert LED output data05 = data04; //Invert LED output data04 = data07; //Invert LED output data07 = temp; //Invert LED output led_timer.reset(); //Resets timer count to 0 } } }