TMS320VC33的通用I/O口作为串行口的实用方法

The Method of Serial Pin Substitute by Currency I/O Pin of TMS320VC33

将通用I/O口作为串行口使用,用软件模拟通用异步发送/接收器UART,使系统在硬件的使用中,减小了元器件的使用面积、使用体积和使用引脚,在软件编程中减少了程序代码空间.目前该方法已经成功应用在某公司研制的基于DSP的某MEMS陀螺捷联惯导系统中,在电路设计、结构设计以及程序设计中都取得了很好的效果.

This paper used asynchronous mode output data while used currency I/O pin as serial pin. Asynchronous mode output data/input data （UART） is simulated by software, this way de- crease number of component, proportion of component,bulk of component and pin of component in hardware system, the software reduced room of code. At present, this way is applied in the MEMS strap - down system of DSP to get better effect on circuit diagram, structural and programmer.