- How to make loopback cable how to#
- How to make loopback cable install#
- How to make loopback cable serial#
- How to make loopback cable software#
To do the loopback test on URS232A, you need to do exactly the same settings as you did for UC00B, connecting the TX and RX of it. If your project is not working, stop troubleshooting UC00B, troubleshoot other parts. With this, the UART communication is successful, and the UC00B is working properly. The 1st character is the character computer send out via transmit pin on UC00B (it appears on HyperTerminal because we set the “echo locally”), and 2nd character is the character received by the receive pin, and send to computer.
Tick the check box “Send line ends with line feeds” and “Echo typed characters locally”. Go to Settings tab and click the ASCII setup. Since flow control is not needed in loopback test, choose the flow control to “None” and click OK. The port setting should be set as shown in diagram below.
How to make loopback cable install#
If this is your 1st time using UC00B, please do go through the User’s Manual to install USB driver. Open HyperTerminal, just key in any name u like and click OK.Ĭhoose the port of UC00B, normally is highest number, in my case it is port 157. To do the loopback test on UC00B, simply connect the RXD and TXD pins together, using a female to female jumper wire as shown in diagram below.Ĭonnect the UC00B to your computer’s USB port.
How to make loopback cable software#
How to make loopback cable how to#
In this tutorial, I am going to show you how to do the loopback test on UC00B and URS232A to verify the communication of the device using HyperTerminal software. We can just connect the device’s transmitter and receiver pin together to perform this test.
How to make loopback cable serial#
This technique can be used to troubleshoot serial device. By performing loopback test, the target device sends and receives data using the same port. Serial loopback test is a test carry out to verify the communication of a device, particularly in UART. You want to check whether the UART device is working!!! The simplest method is to do loopback test.
The command syntax to create a loopback interface is shown below. Loopback interfaces are treated similar to physical interfaces in a router and we can assign IP addresses to them. By default, router doesn’t have any loopback interfaces (loopback interfaces are not enabled by default), but they can easily be created. Loopback interfaces interfaces are always up and running and always available, even if other physical interfaces in the router are down.Ī loop back interface is a software interface which can be used to emulate a physical interface. Loopback interfaces are used as the termination points for Remote Source-Route Bridging (RSRB), and Data-Link Switching Plus (DLSW+). A loopback interface is always up and allows Border Gateway Protocol (BGP) neighborship between two routers to stay up even if one of the outbound physical interface connected between the routers is down. Loopback interface’s IP Address determines a router’s OSPF Router ID. A loopback interface is not a physical interface like Fast Ethernet interface or Gigabit Ethernet interface.Ī loopback interface has many uses. A loopback interface is a logical, virtual interface in a Cisco Router.
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