一个简单的ADS7843触屏控制芯片的程序。用GPIO口模拟SPI总线控制系统，适合LM3S系列单片机上使用，开发环境：iar-A simple ADS7843 touch screen controller chip process. GPIO SPI bus interface with analog control system, suitable for use on LM3S series microcontroller, the development environment: ia

在开发环境IAR，下使用LM3S驱动TLV5616的简单例程，便于移植，也是使用GPIO模拟SPI总线-In the development environment IAR, the use of simple routines TLV5616 LM3S drive, easy to transplant, but also use the GPIO, SPI bus simulation