Transfer Files Over Serial Port
Hi, can any body suggest me good reference how to transfer files over serial comm using vs2005 C#.I am unable to understand what is event driver I/O and synchronous I/O which is better to me?My task is just transfer files b/n two systems using serial ports. Thanking you inadvance A.suneel Event driven I/O uses the DataReceived event. Synchronous I/O. Hi, can any body suggest me good reference how to transfer files over serial comm using vs2005 C#.I am unable to understand what is event driver I/O and synchronous I/O which is better to me?My task is just transfer files b/n two systems using serial ports. You need a terminal application like minicom. Then you connect the two computers, start minicom on one side, connect to the other side (the one where you can login) and use the sz command to send the file. Minicom will automatically detect the file transfer. Would I have to parse the bytes of the file into packets myself, and then just write them to the port similar to sending text? Whats the correct way to go about transferring files with a modem over a serial port, and where can I read more about it?
- I'd like to send the text content of a file over the serial port, over PuTTY. I know that extensions exists such as Xmodem and Zmodem, but they all use some checksum protocols to confirm that a file is sent over the port. However, my requirements are more simple.
- The only way to communicate with this device is over serial and the device offers a console on this serial port. This board doesn't have kermit neither busybox rx nor lrzsz. Sending file to remote. I was able to send file to the board following this thread.
- Serial port can transfer any number of bytes - it is only a pipe. That you have to define a protocol and transmit the data in an orderly manner so that the recipient can interpret them correctly. PS An example protocol for file transfer is xmodem or zmodem.
There might be a point in you're IT career that you'll need to transfer and IOS image to a device via a console cable. This document walks through the steps you'll need to complete in order to successfully transfer an IOS over a console cable.
9 Steps total
Step 1: Install HyperTerminal
Since Windows 7 does not have Hyper terminal you'll need to install it. This guide will present two options, 1 install a trail emulator and 2 copy files from an XP machine.
1.) Go to http://www.hilgraeve.com/hyperterminal-trial/ and install the hyperterminal emulator trial for temporary purposes.
2.) Reference this spiceworks how-to http://community.spiceworks.com/how_to/show/3736-installing-hyperterminal-on-windows-7 which allows you to transfer the files from an XP machine.
Side note - when launching HyperTerminal for the first time it will prompt for Location Information, simply putting in any area code as shown will do, then click ok. Download grand theft for android.
Step 2: Launch Hyper Terminal
Now that Hyper Terminal is installed launch the program, give the session a name and click OK.
Transfer Files Over Serial Port Free
Step 3: Select the COM port
Make sure you're connecting to the correct COM port. If you're using a USB to Serial adapter the COM port in use is most likely not COM1. You can confirm which COM port is being used by looking it up in Device Manager within windows.
Step 4: Configure the Session
Next click on the Configure button to specify the session settings.
Bits per second: 9600
Data Bits: 8
Parity: None
Stop bits: 1
Flow Control: None
We'll change the Bits per second later to increase throughput.
Step 5: Connect to the Device & Increase bits per second
Click Ok to open a session and issue the set BAUD 115200 command. This will allow us to increase the throughput, decreasing the time it takes for the image to transfer.
set BAUD 115200
Once changed you'll notice when you type odd characters appear, at this point disconnect from the device as we need to adjust our bits per second setting.
Step 6: Reconnect with the increased bits per second
Repeat steps 3-4, except when configuring the session change the bits per second to 115200.
Step 7: Use xmodem to Start the Transfer
Once re-logged into the device with the increased bits per second, issue the following command.
copy xmodem: flash:c2955-i6q4l2-mz.121-13.EA1.bin
replace c2955-i6q4l2-mz.121-13.EA1.bin with the file name of the IOS you are transferring.
Important Side Note - We'll need the IOS image stored local on the computer consoled into the device. Download rosetta stone spanish mac free. If possible download it or transfer it by some other means.
Step 8: Send File with Hyper Terminal
Click on the Transfer tab at the top of the HyperTerminal window and select send file. Then browse to the locally stored copy of the IOS image and select xmodem from the drop down under Protocol, then click Send.
Step 9: Perpare to wait.
Even with our bit rate set higher, a 15mb file will take around an hour and twenty minutes.
Be sure to check the disk space on the device BEFORE you transfer, it really sucked with it got to 5 minutes left after an hour and twenty minutes and crashed because it ran out of space.
References
- Cisco Thread 1
- Cisco Thread 2
- Transfer HyperTerminal from XP