iPhone audio I/O develop intro

在android手机耳机口插入一个硬件设备，实现通信-Hardware and software for smartphone sensor peripherals using the audio jack interface.

用MSP430单片机通过音频接口与iphone手机进行通讯的程序，包括原理图，msp430固件源码，iphone手机端3个例程源码-Using MSP430 microcontroller through the audio interface and iPhone mobile communication procedures, including schematics, MSP430 firmware source code, iPhone mobile terminal 3 source