摘要
在嵌入式系统中接入以太网包含了PC机+以太网+嵌入式设备的集中式方案、嵌入式系统+以太网控制模块的分布式方案、RTOS+嵌入式系统微控制器方案、虚拟软件包+嵌入式微控制器方案、EMIT协议和MCU+emgateway协议方案5种。文章使用的DSP芯片为TMS320F2812,选择93C46以太网适配器,RTL8019AS作为以太网控制器芯片,将DSP芯片与以太网连接后,使用TCP/IP协议栈,从而完成了硬件系统的连接。之后进行软件程序的设计,对DSP芯片和以太网控制芯片驱动数据执行初始化,设计好中断服务程序,以配合数据接收程序的运行,通过数据接收程序读取网卡内部缓存帧,并最终存储到内存中,再由数据发送程序将数据包发送到以太网中,从而完成了DSP与远程PC机的网络通信。
In the embedded system to access Ethernet includes five kinds of solutions, namely centralized solutions of PC ＋ Ethernet ＋ embedded devices, distributed solutions of embedded systems ＋ Ethernet control module, microcontroller solutions of RTOS ＋ embedded system, microcontroller solutions of Virtual Packages ＋ Embedded, EMIT protocols and MCU ＋ emgateway protocols. This article chooses TMS320F2812 DSP chip, 93C46 Ethernet adapter and RTL8019AS Ethernet controller chip, after connecting the DSP chip with Ethernet, the TCP / IP protocol stack is used to complete the hardware system connection. After this, the article carries on the software program design, carries on the initialization to the DSP chip and the Ethernet control chip driver data, designs the interrupt service program to cooperate with the data receiving program operation, through the data receiving procedure reads the network card internal cache frame, and eventually the data is stored in memory, and then the data sending program sends the data packet to the Ethernet to complete the network communication between the DSP and the remote PC.
出处
《无线互联科技》
2017年第24期3-4,共2页
Wireless Internet Technology
