gistfile1.c

#include <stdio.h>
#include <stdint.h>

#define NOTE(tone, dur) ((((((uint8_t)(dur)) & 0x07)<<5) | (((uint8_t)(tone)) & 0x1F)))
#define GET_TONE(note) ((note) & 0x1F)
#define GET_DURATION(note) (((note)>>5) & 0x07)
#define END_MARKER 0XFF
#define READ_BIT(byte, bit) ((byte & (1 << bit)) >> bit)

enum {
	T_REST,
	T_C,
	T_CS,
	T_D,
	T_EB,
	T_E,
	T_F,
	T_FS,
	T_G,
	T_AB,
	T_A,
	T_BB,
	T_B,
	T_CX,
	T_CSX,
	T_DX,
	T_EBX,
	T_EX,
	T_FX,
	T_FSX,
	T_GX,
	T_ABX,
	T_AX,
	T_BBX,
	T_BX
};

uint8_t test_tune[] = { NOTE(T_EX, 2),  NOTE(T_EX, 4),  NOTE(T_EX, 4), END_MARKER };
uint8_t *p;

void send_byte(uint8_t val)
{
	int i;

	for (i=0; i<8; i++) {
		printf("%c", (val & (1 << i)) ? '1' : '0');
	}
	printf("\n");
}

void send_data(uint8_t index)
{
	const uint8_t *ptr = &test_tune[0];
	for (uint8_t data = *ptr++; data != END_MARKER; data = *ptr++) {
		printf("data: %02hhx: ", data);
		send_byte(data);
	}
}

int main(void)
{
	send_data(0);
	return 0;
}