RS-232串口一度像现在的USB接口一样,是PC的标准接口,用来连接打印机.Modem和其他一些外设.后来逐渐被USB接口所取代,现在PC上已经看不到它的身影了.开发调试时如果用到串口,一般都是用USB转串口头,如下图所示.左图为USB-to-RS-232,右图为USB-to-TTL.USB-to-RS-232和USB-to-TTL因电气特性不同,所以应用场合也不同,不能互换.本文所转载的文章,重点介绍了RS-232和TTL串口的异同. One of the tools we use most…
catalogue . 引言 . Device Class Definition for Human Interface Devices (HID) . USB HID Report Descriptors . arduino USB Keyboard definition . USB Host Shield for Arduino分类 . USB Host Shield for Arduino datasheet . USB Host Library Rev.2.0 . USB Keyboar…
接上篇 BeagleBone Black USB 一线通(1) 三.网络与ssh终端 通过串口终端我们可以看到启动的过程,也能做一些交互操作,比如我们看到了网络接口的状况.其中的usb0已经在随板的系统中配置好了,有一个固定的IP地址 192.168.7.2 . 在主机这边,应该也安装好了跟BB-Black相关的驱动程序,其中就有一个网络设备 Linux USB Ethernet/RNDIS Gadget.为了和BB-Black连接方便,可以把主机的这个网卡也配置一个固定的IP地址 192.1…
Key Features High-performance FPGA configuration and PROM/CPLD programming Includes innovative FPGA-based acceleration firmware encapsulated in a small form factor pod attached to the cable Supports JTAG and Slave-Serial programming topologies Firmwa…
http://www.elnec.com/products/universal-programmers/beeprog2c/ FPGA based totally reconfigurable 48 powerful TTL pindrivers provide H/L/pull_up/pull_down and read capability for each pin of socket. Advanced pindrivers incorporate high-quality high-sp…