串口数据封装发送接收的函数，串口安全协议-Function of transmit and receive serial data package, serial security protocols. . .

基于s3c2410 arm嵌入式微处理器，ADS开发环境下的SECURITY CARD 数据收发源代码。-Based on s3c2410 arm embedded microprocessor, ADS development environment SECURITY CARD data transceiver source code.

The VPC3+C handles the message and address identification, the data security sequences and the protocol processing for PROFIBUS-DP. In addition the acyclic communication and alarm messages, described in DPV1 extension, are supported. Furthermore the