i2c 장치를 찾아보자

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void debug_I2C1_addr_find(void)
{
	byte1 addr;
	char buf[16];
	win32_I2C_cls();
	xputs("debug_I2C1_addr_find");
	for(addr=1;addr<=0xfe;addr++)
	{
		I2C1_start();
		_I2C1_write1(addr|0);//write
		if(I2C1_read_ACK()==0)//ACK
		{
			char buf2[16];
			byte1_to_binary_str(addr,buf2);
			xputs_str("addr",buf2);
			xputs_HEX1("I2C1 addr",addr);

			win32_I2C_print_cls();
			I2C1_write_regaddr_read_n(addr,0,buf,sizeof(buf),100);
			xputs_HEX("read",buf,sizeof(buf));
		}
		else
		{
			//not found
			win32_I2C_cls();
		}
		I2C1_stop();
		WDT_reset();
	}
	xputs("------------");
	win32_I2C_print_cls();
}

read, write
2개가 짝으로 나온다.