Oliver Keller / Mbed 2 deprecated Nucleo_timer_test

timer tests with the STM32F303K8 nucleo board

Dependencies:   mbed

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main.cpp

00001 #include "mbed.h"
00002 
00003 Timer t;
00004 int rise_time = 0;
00005 int fall_time = 0;
00006 bool new_rise = false;
00007 bool new_fall = false;
00008 
00009 void pin_up(){
00010     rise_time=t.read_us();
00011     new_rise=true;
00012 }
00013 
00014 void pin_down(){
00015     fall_time=t.read_us();
00016     new_fall=true;
00017 }
00018 
00019 Serial pc(USBTX, USBRX);
00020  
00021 int main() {
00022      pc.baud(230400);
00023      t.start();
00024      InterruptIn _interrupt(D1);
00025      _interrupt.rise(&pin_up);
00026      _interrupt.fall(&pin_down);
00027     pc.printf("Hello World!");
00028     while(1) {
00029         if(new_rise && new_fall) {
00030             pc.printf("%d\n\r", fall_time - rise_time);
00031             new_rise=false;
00032             new_fall=false;
00033         }
00034     }
00035 }
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