Stefan Waldschmidt / Mbed OS Test_Interrupt_Response_Time

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Show/hide line numbers main.cpp Source File

main.cpp

00001 /*
00002    Test interrupt response time
00003 
00004    Hardware: NUCLEO-F767ZI
00005    Libraries:
00006      mbed-os-5.12.3
00007    Measured delay between gpio_in and gpio_out
00008    * rising:  1.1 usec - 1.3 usec
00009    * falling: 1.1 usec - 1.3 usec
00010 */
00011 
00012 #include "mbed.h"
00013 
00014 InterruptIn gpio_in(PC_8);
00015 DigitalOut  gpio_out(PC_9);
00016 
00017 void on_fall()
00018 {
00019     gpio_out = 0;
00020 }
00021 
00022 void on_rise()
00023 {
00024     gpio_out = 1;
00025 }
00026 
00027 int main()
00028 {
00029     gpio_in.fall(&on_fall);
00030     gpio_in.rise(&on_rise);
00031 
00032     while (1) {
00033         wait(0.01); // 10 msec
00034     }
00035 }
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