Described in detail with the use of process QuartusII

使用IC卡发卡机构的预付费PB VF BCB DELPHI VC源程序，对其进行了详细说明

本程序是i2c总线读写一个字节的程序。在写过程序中，不一定非要检测i2c的应答位，可以直接延时过去就行，但是在读过程中必须给应答信号，读完发停止位，一定确认所发的信号都发上了。否则在连续地址读的过程中可能不会出错，但是在随机度过程中就会出错，我的程序就是在给停止信号时没有给上，24cxx一直在输出数据，结果读出错。找着问题后我的程序只加入了一条命令便完全正常。-i2c bus read and write a byte procedures. The written procedure, not necessarily require the detection i2c-response, and can directly past trip delay, but the process must be read to the response signal, stopped at reading, we recognize the signals are on the fat. Otherwise, the address read for the course could not go wrong, but the randomness of the process would be a mistake, I was in the process to stop for no signal, 24cxx in output data, read errors. I discovered the problem after the procedure just joined the order of a completely normal.

USB通信源代码，网上最全，下载后重新rebuild就可以运行了。-USB communications source code, the entire Internet, downloading re-rebuild on the run.

和基本使用BCB控制RS-232信号控制测试的源代码，初学者推荐

我曾经在工程中使用的部分源代码，有详细的说明-project, I had the use of the source code, a detailed explanation

一个关于Com端口调制的程序。包括向Com端口发送数据及从Com端口接受数据两部分。-a Com port on the modulation process. Including Com port and send data from the Com port to accept data in two parts.

串口通信的东东 串口通信的东东串口通信的-Dongdong serial communications serial communications serial communications Dongdong

串口通信自动检测程序，已经通过测试，能够成功在2812板上运行。-Automatic detection of serial communication program, has passed the test, be able to successfully run on the board at 2812.

fxa-interface 接口的vb程序plc-fxa-interface interface vb procedures plc

使用汇编语言编写的在MCU中可用的串口接口程序-serial interface for MCU