#include <avr/pgmspace.h>
#include "midi_data.hpp"
#include "eeprom.hpp"

static int address = 0;

void eeprom::jump(int loc) {
	address = loc;
}

inline size_t proc_len(size_t len) {
	if(address + len >= sizeof(MIDI)) {
		return sizeof(MIDI) - address;
	} else {
		return len;
	}
}

void eeprom::read(void* data, size_t len) {
	char* bytes = (char*)data;
	len = proc_len(len);
	memcpy_P(data, &MIDI[address], len);
	address += len;
}

void eeprom::write(const void* data, size_t len) {
	const char* bytes = (const char*)data;
	len = proc_len(len);
	address += len;
}