int
main() {
check(0, "", 0);
check(1, "\0", 1);
check(1, "a", 1);
check(2, "ab", 2);
check(3, "abc", 3);
assert(sizeof("a\303\237cd") == 6);
check(4, "a\303\237cd", 5);
check(3, "a\370\211\200\201\257c", 7);
check(3, "\320\273\320\265\320\262", 6);
check(-1, "a\303", 2); /* Truncated */
check(-2, "\377", 1); /* Invalid UTF-8 sequence start */
check(-2, "\200", 1);
check(-2, "\320\273\265\320\262", 5);
check(-3, "\320c", 2); /* Not continuation */
check(-3, "a\370\200\200\200c", 6);
check(-4, "a\370\200\200\200\257c", 7);
check(-4, "\320\273\320\265\340\200\262", 7);
check(-5, 0, 0);
check_speed();
return 0;
}
int output_speed(int channel, int speed) {
check_channel(channel);
check_speed(speed);
if (channel == 0) {
timer_set_oc_value(TIM2, TIM_OC2, speed*20);
} else {
timer_set_oc_value(TIM2, TIM_OC1, speed*20);
}
return 0;
}
