Table of Contents
Introduction.........................................................................................................................................................1
Chapter 1, Basics of Serial Communications...................................................................................................3
What Are Serial Communications?.........................................................................................................3
What Is RS−232?.....................................................................................................................................4
Signal Definitions.......................................................................................................................4
Asynchronous Communications..............................................................................................................5
What Are Full Duplex and Half Duplex?...................................................................................6
Flow Control...............................................................................................................................6
What Is a Break?.........................................................................................................................7
Synchronous Communications................................................................................................................7
Accessing Serial Ports..............................................................................................................................7
Serial Port Files...........................................................................................................................7
Opening a Serial Port..................................................................................................................8
Writing Data to the Port..............................................................................................................9
Reading Data from the Port........................................................................................................9
Closing a Serial Port...................................................................................................................9
Chapter 2, Configuring the Serial Port...........................................................................................................11
The POSIX Terminal Interface..............................................................................................................11
Control Options.........................................................................................................................12
Local Options............................................................................................................................15
Input Options............................................................................................................................16
Output Options..........................................................................................................................17
Control Characters....................................................................................................................18
Chapter 3, MODEM Communications...........................................................................................................21
What Is a MODEM?..............................................................................................................................21
Communicating With a MODEM..........................................................................................................21
Standard MODEM Commands.................................................................................................22
Common MODEM Communication Problems........................................................................23
Chapter 4, Advanced Serial Programming....................................................................................................25
Serial Port IOCTLs................................................................................................................................25
Getting the Control Signals.......................................................................................................26
Setting the Control Signals.......................................................................................................27
Getting the Number of Bytes Available...................................................................................27
Selecting Input from a Serial Port..........................................................................................................27
The SELECT System Call........................................................................................................28
Using the SELECT System Call...............................................................................................28
Using SELECT with the X Intrinsics Library..........................................................................29
Appendix A, Pinouts.........................................................................................................................................31
RS−232 Pinouts.....................................................................................................................................31
RS−422 Pinouts.....................................................................................................................................32
RS−574 (IBM PC/AT) Pinouts..............................................................................................................32
SGI Pinouts............................................................................................................................................33
Serial Programming Guide for POSIX Operating Systems
Introduction i
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wjs10332014-08-16串口编程方面的资料，谢谢分享
partnermore2014-07-16串口编程方面的资料
meihaifeng0072012-05-10没看清楚题目，是串口编程方面的资料，谢谢分享
linux_1032013-11-07ISIG 当输入INTR、QUIT、SUSP或DSUSP时，产生相应的信号 ICANON 使用标准输入模式 XCASE 在ICANON和XCASE同时设置的情况下，终端只使用大写。 ECHO 显示输入字符 ECHOE 如果ICANON同时设置，ERASE将删除输入的字符 ECHOK 如果ICANON同时设置，KILL将删除当前行 ECHONL 如果ICANON同时设置，即使ECHO没有设置依然显示换行符 ECHOPRT 如果ECHO和ICANON同时设置，将删除打印出的字符（非POSIX） TOSTOP 向后台输出发送SIGTTOU信号
lanejim2014-09-03不错的资源，可惜的是英文，对于英文不好的人来说有点困难
