#include "utils.h"
#include "mystd.h"

// this just burns cycles.
// the volatile is important, it means that the cpu can't optimize any
// read/writes for the value
static inline void spin_loop(volatile uint16_t counts) {
	while (counts)
		counts--;
}

void delay_ms(uint16_t ms) {
	while (ms) {
		// this value was taken using a delay of 500ms, and just recording the led
		// blinking. it seems to be high enough such that each loop of delay_loop
		// takes 1ms :D
		spin_loop((F_CPU) / 5000);
		ms--;
	}
}

void ft_bzero(void* data, uint16_t size) {
	char* d = data;
	while (size) {
		*d = 0;
		d++;
		size--;
	}
}

uint8_t ft_stridx(const char* str, char chr) {
	if (!str)
		return -1;
	for (uint8_t i = 0; str[i]; i++) {
		if (str[i] == chr)
			return i;
	}
	return -1;
}