1. 根目录:
2. include
3. sound
4. l3.h

#ifndef _L3_H_
#define _L3_H_ 1

struct l3_pins {
	void (*setdat)(int);
	void (*setclk)(int);
	void (*setmode)(int);
	int data_hold;
	int data_setup;
	int clock_high;
	int mode_hold;
	int mode;
	int mode_setup;
};

int l3_write(struct l3_pins *adap, u8 addr, u8 *data, int len);

#endif