mbed-os/libraries/tests/mbed/timeout/main.cpp

#include "mbed.h"

DigitalOut led(LED1);

#ifdef TARGET_KL25Z
DigitalOut out(PTA1);

#elif defined(TARGET_KL05Z)
DigitalOut out(PTB1);

#elif defined(TARGET_KL46Z)
DigitalOut out(PTA1);

#elif defined(TARGET_LPC812)
DigitalOut out(P0_12);

#elif defined(TARGET_LPC1114)
DigitalOut out(LED2);

#elif defined(TARGET_K64F)
DigitalOut out(LED1);

#elif defined(TARGET_NUCLEO_L152RE)
DigitalOut out(LED1);

#else
DigitalOut out(p5);
#endif

Timeout timer;

#define MS_INTERVALS 1000

void print_char(char c = '*')
{
    printf("%c", c);
    fflush(stdout);
}

void toggleOff (void);

void toggleOn (void) {
    static int toggle_counter = 0;
    out = 1;
    led = 1;
    if (toggle_counter == MS_INTERVALS) {
        print_char();
        toggle_counter = 0;
    }
    toggle_counter++;
    timer.attach_us(toggleOff, 500);
}

void toggleOff(void) {
    out = 0;
    led = 0;
    timer.attach_us(toggleOn, 500);
}

int main() {
    toggleOn();
    while(1);
}