Oliver Keller / Mbed 2 deprecated Nucleo_timer_test

timer tests with the STM32F303K8 nucleo board

Dependencies:   mbed

main.cpp@0:e40146aa84f7, 2016-06-10 (annotated)

Committer:
OliverKeller
Date:
Fri Jun 10 17:52:10 2016 +0000
Revision:
0:e40146aa84f7
test to read pulse width in us on D1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
OliverKeller 0:e40146aa84f7 1 #include "mbed.h"
OliverKeller 0:e40146aa84f7 2
OliverKeller 0:e40146aa84f7 3 Timer t;
OliverKeller 0:e40146aa84f7 4 int rise_time = 0;
OliverKeller 0:e40146aa84f7 5 int fall_time = 0;
OliverKeller 0:e40146aa84f7 6 bool new_rise = false;
OliverKeller 0:e40146aa84f7 7 bool new_fall = false;
OliverKeller 0:e40146aa84f7 8
OliverKeller 0:e40146aa84f7 9 void pin_up(){
OliverKeller 0:e40146aa84f7 10 rise_time=t.read_us();
OliverKeller 0:e40146aa84f7 11 new_rise=true;
OliverKeller 0:e40146aa84f7 12 }
OliverKeller 0:e40146aa84f7 13
OliverKeller 0:e40146aa84f7 14 void pin_down(){
OliverKeller 0:e40146aa84f7 15 fall_time=t.read_us();
OliverKeller 0:e40146aa84f7 16 new_fall=true;
OliverKeller 0:e40146aa84f7 17 }
OliverKeller 0:e40146aa84f7 18
OliverKeller 0:e40146aa84f7 19 Serial pc(USBTX, USBRX);
OliverKeller 0:e40146aa84f7 20
OliverKeller 0:e40146aa84f7 21 int main() {
OliverKeller 0:e40146aa84f7 22 pc.baud(230400);
OliverKeller 0:e40146aa84f7 23 t.start();
OliverKeller 0:e40146aa84f7 24 InterruptIn _interrupt(D1);
OliverKeller 0:e40146aa84f7 25 _interrupt.rise(&pin_up);
OliverKeller 0:e40146aa84f7 26 _interrupt.fall(&pin_down);
OliverKeller 0:e40146aa84f7 27 pc.printf("Hello World!");
OliverKeller 0:e40146aa84f7 28 while(1) {
OliverKeller 0:e40146aa84f7 29 if(new_rise && new_fall) {
OliverKeller 0:e40146aa84f7 30 pc.printf("%d\n\r", fall_time - rise_time);
OliverKeller 0:e40146aa84f7 31 new_rise=false;
OliverKeller 0:e40146aa84f7 32 new_fall=false;
OliverKeller 0:e40146aa84f7 33 }
OliverKeller 0:e40146aa84f7 34 }
OliverKeller 0:e40146aa84f7 35 }