RS-232

R2025b

采用 RS-232 协议的串行通信

RS-232 是一种成熟的点对点串行通信协议。使用 RS-232 模块通过目标计算机内置的串行端口与其他设备进行通信。有关目标计算机串行端口的详细信息，请参阅制造商文档。

模块

RS232

	ASCII Encode	将 Simulink 值转换为 `uint8` 字符向量
	ASCII Decode	将 ASCII 字符向量解析为 Simulink 值
	ASCII Decode V2	将 ASCII 字符向量解析为 Simulink 值
	FIFO Read	Read simple data streams
	FIFO Write	编写简单的数据流
	FIFO Read HDRS	Read multiple ASCII data streams according to header information
	FIFO Read Binary	Read multiple binary data streams according to header information
	Modem Control	Control state of RTS and DTR output lines on serial port
	Modem Status	Return state of modem control lines
	Legacy Serial Read	Read input data for baseboard serial communications
	Legacy Serial Setup	设置基座串行通信
	Legacy Serial Write	Write output data for baseboard serial communications
	Legacy Serial Port	Send and receive data over mainboard baseboard serial port
	Legacy Serial Port F	Send and receive data over mainboard baseboard serial port with FIFO

实用工具

	Byte Packing	构建数据帧
	Byte Unpacking	分解数据帧
	Byte Reversal/Change Endianess	将小端数据转换为大端格式以供大端处理器使用
	Protocol Decoder	Decode a uint8 byte stream by specifying the packet structure (自 R2023b 起)
	Protocol Encoder	Encode input data into a uint8 byte stream by specifying the packet structure (自 R2023b 起)
	Shared Memory Pack	共享内存包
	Shared Memory Unpack	共享内存解包

主题

RS-232 串行通信
了解用于目标计算机与串行设备之间串行通信的 Simulink^® Real-Time™ 库。
RS-232 Legacy Drivers
To represent multiple serial devices, use composite Simulink Real-Time RS-232 mainboard driver blocks.

精选示例

ASCII 编码/解码重新同步环回测试

利用 FIFO Read HDRS 模块在多次禁用后重新同步的能力，并将此能力应用于解决诸如读取尝试时消息仅部分完成等错误。

打开脚本

ASCII Encoding/Decoding Resync Loopback Test (with Baseboard Blocks)

Use the ability of the FIFO Read HDRS block to resynchronize after being repeatedly disabled and apply this ability to resolve errors such as when a message is only partially complete at the time the read is attempted.