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guides:virtual_modem:section_4 [2019-11-18 23:51]
omolini [Required packages]
guides:virtual_modem:section_4 [2023-11-24 23:16] (current)
omolini
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 In the next chapter we will download and install vmodem onto your Raspberry linux box! In the next chapter we will download and install vmodem onto your Raspberry linux box!
  
-  * If you would like to view the source code and more coding examples, ​[[Guides:​Virtual Modem:​Script|click here]] +  * If you would like to optionally ​[[Guides:​Virtual Modem:​Script|view the source code and a few more coding examples, ​click here]] 
-  * To download and install vmodem, execute the following commands:+  * To just download and install vmodem, execute the following commands:
 <code bash> <code bash>
 sudo mkdir /​boot/​vmodem sudo mkdir /​boot/​vmodem
Line 24: Line 24:
     * **/​boot/​vmodem/​1.sh**     * **/​boot/​vmodem/​1.sh**
     * **/​boot/​vmodem/​ppp.sh**     * **/​boot/​vmodem/​ppp.sh**
 +
 +  * Make sure they are executable:
 +<code bash>
 +sudo chmod 770 /​boot/​vmodem/​vmodem.sh
 +sudo chmod 770 /​boot/​vmodem/​1.sh
 +sudo chmod 770 /​boot/​vmodem/​ppp.sh
 +</​code>​
  
 ==== Name of the serial port ==== ==== Name of the serial port ====
Line 33: Line 40:
   * Run the command: ''​**ls** /​dev/​tty*'' ​   * Run the command: ''​**ls** /​dev/​tty*'' ​
 {{ :​guides:​pics:​raspberry_serial_port_3.png |}} {{ :​guides:​pics:​raspberry_serial_port_3.png |}}
-    * If you **do not** see ''/​dev/​ttyUSB0''​ listed, you will need to update the script with the correct serial port. Visit [[Guides:​Virtual Modem:​Section 4:Changing the serial port|this page]] to update the script with the correct serial port. +    * If you **do not** see ''/​dev/​ttyUSB0''​ listed, you will need to update the script with the correct serial port. [[Guides:​Virtual Modem:​Section 4:Changing the serial port|Visit this page]] to update the script with the correct serial port. 
     * If you **do** see ''/​dev/​ttyUSB0''​ listed, continue on!     * If you **do** see ''/​dev/​ttyUSB0''​ listed, continue on!
 +
 +==== Name of the ethernet interface ====
 +For the sake of this tutorial we have used wired Ethernet. If you want to use Virtual Modem over a **wireless connection**,​ you will need to make sure it is properly set up, then update the script where it says ''​etherp=eth0''​ to say ''​etherp=wlan0''​ instead. To change the ethernet port in the vmodem.sh script, do the following:
 +  - Run ''​sudo nano /​boot/​vmodem/​vmodem.sh''​
 +  - Find the line ''​etherp=eth0''​ and change it to read ''​etherp=wlan0''​.
 +  - Save file by pressing CTRL + o, then ENTER to save under the same name.
 +  - Exit editor with CTRL + x.
  
 ==== Network test on the Raspberry Pi ==== ==== Network test on the Raspberry Pi ====
 This would be a good time to test your network to eliminate any future headaches. This would be a good time to test your network to eliminate any future headaches.
  
-Over SSH run the command: +  * Over SSH run the command: ​''​ping ''''​www.google.com''​ 
-<code bash> +  * If you get ping replies, you are all set and the networking on your Raspberry Pi is working. 
-ping www.google.com +  * Press Ctrl Z to stop ping. 
-</​code>​ +
-  * Press Ctrl and Z to stop ping. +
 ==== Initial VModem testing ==== ==== Initial VModem testing ====
 To test VModem, you should be able to simply run the script. Test it first over SSH to see it's output: To test VModem, you should be able to simply run the script. Test it first over SSH to see it's output:
  
-  * Connect ​one end of your serial cable to the Raspberry Pi'​s ​Serial-USB converter, and the other end to an old computer ​with serial portUse a terminal ​program ​such as PuTTY or HyperTerminal, and make sure you set the appropriate serial speed settings on the terminal program before you connect (by default VModem is set to operate at 57600 bps) +  * If you have not done so already, connect ​one end of your serial cable to the Raspberry Pi's USB-to-serial adapter, and the other end of the serial cable to computer ​which has terminal software installedYou can use any terminalsuch as [[https://​www.chiark.greenend.org.uk/​~sgtatham/​putty/​latest.html|PuTTY]] or the built-in ​HyperTerminal ​on Windows 9x.  
-  * PuTTY, Trumpet Winsock (Windows 3.1) or Dial-up networking (Windows 95) to connect ​to the Raspberry Pi.  +  * Make sure you set the appropriate serial speed settings on the terminal program before you connect (by default VModem is set to operate at 57600 bps) 
-  * Over SSH, on the Raspberry, issue the following commands. ​+  * Connect with the terminal program ​to the Raspberry Pi. 
 +  * Open up PuTTY (or your other SSH client of choice) and connect over SSH to the Raspberry ​Pi. Issue the following commands. ​
 <code bash> <code bash>
 cd /​boot/​vmodem cd /​boot/​vmodem
Line 55: Line 68:
 </​code>​ </​code>​
  
-  * If you see the READY text on the screen, the script is ready to accept connections. +  * If you see the READY text on the Raspberry Pi, the script is ready to accept connections. 
-  * To exit VModem and return you back to shellyou can press **CTRL + z** +  * Nowopen up a SERIAL terminal, for example, PuTTY or HyperTerminal on the computer, and issue a few basic Hayes commands.  
-  * On your serial terminal, ​issue a couple of test commands, such as "​AT"​ and then press ENTER. You may need to type AT couple ​of times for VModem ​to sync up.+  ​* **If you are using HyperTerminal as your serial terminal** 
 +    * When you start HyperTerminal,​ hit cancel when it asks for the phone number. This should take you directly to the serial console 
 +  * **If you are using PuTTY as your serial terminal** 
 +    * Under Connection typeselect Serial.  
 +    * In Serial Line text box, type in COM1, COM2, or other COM port that you are using. 
 +    * Under Speed, select the connection speed that you are using, by default VModem is set to 57600, so you will match that speed. 
 +  * First press ENTER a couple of times to sync up. Then type "​AT"​ and then press ENTER. You should receive an "​OK"​ response.  
 +    * If you receive a garbled or no response, the serial speed settings ​may be wrong. Make sure both computers are set to the same serial speed. 
 +    * If you do not receive any response, something may be wrong with the serial settings, or with the connection to the Raspberry Pi. Does the computer have fast 16550 UART and a good USB-to-Serial adapter? (check section 2 of this tutorial).  
 +    * Check to see that the vmodem.sh script is running and is receiving your keystrokes. If it working, it should echo your input from the serial terminal to the script'​s output. 
 +    * If you're still not able to get it working, see the Troubleshooting section below
   * On a serial terminal, this is the output you should be getting:   * On a serial terminal, this is the output you should be getting:
 {{ :​guides:​pics:​vmodem_hyperterm.png?​600 |}} {{ :​guides:​pics:​vmodem_hyperterm.png?​600 |}}
   * Over on the Raspberry Pi, you should be seeing the corresponding output:   * Over on the Raspberry Pi, you should be seeing the corresponding output:
 {{ :​guides:​pics:​vmodem_putty2.png |}} {{ :​guides:​pics:​vmodem_putty2.png |}}
-  * If you get any error messages, take a note of them and look for commonalities in any steps you've taken before this step. Open up the script vmodem.sh for editing to make sure the baud and serial port are properly set. If you're unable to figure it out, feel free to contact me (see bottom of page). 
  
-===== Getting online ===== +----
-Now you can proceed to check out the system specific guides on how to interface different vintage computers and devices with VModem:+
  
-  * [[Guides:​Connecting Windows 3.1 to the Internet]]  +Go ahead and continue ​to the next part of this guide, where we will go through using Virtual Modem!
-  * [[Guides:​Connecting Windows 9x to the Internet]] +
-  * [[Guides:​Connecting a Macintosh Classic to the Internet]] COMING SOON +
-  * [[Guides:​Connecting a Digital VT100 compatible terminal to the Internet]] COMING SOON+
  
-Make sure vmodem.sh is running on the Raspberry Pi first before attempting connection! +| [[Guides:Virtual Modem:Section 3|<< 3 Setting ​up Raspbian]] [[Guides:Virtual Modem:Section 4|This Page]] | [[Guides:Virtual Modem:​Section 5|5 - Using Virtual Modem >>]] |
- +
-===== Making ​Virtual Modem run at startup ===== +
-After you **have verified** that the VModem works properly on the console (see previous section), and you are able to connect to the Internet, you can make VModem run automatically as a background process after the Raspberry Pi is powered on. +
- +
-There are two ways you can do this: +
- +
-**1)** You can either run the following command which will automatically add VModem to your /​etc/​rc.local:​ +
-<code bash> +
-sudo sh -c '​printf "`head -n -1 /​etc/​rc.local`\n\ncd /​boot/​vmodem\n./​vmodem.sh &​\n\nexit 0\n" >/​etc/​rc.local'​ +
-</​code>​ +
- +
-**2)** Or you can edit your rc.local manually. Make sure your /​etc/​rc.local has the following at the bottom: +
-<code bash> +
-# Start serial port and simulate a modem +
-cd /​boot/​vmodem/​ +
-/​boot/​vmodem/​vmodem.sh & +
-exit 0 +
-</​code>​ +
- +
- +
- +
-  * Restart Raspberry and test the changes. After rebooting, VModem should automatically start up with system processes and start expecting connections on serial. +
- +
-==== Further steps ==== +
-You can now proceed to connect your retro machine to the Internet using Virtual modem. +
- +
-  * [[Guides:​Connecting Windows 3.1 to the Internet]] +
-  * [[Guides:Connecting Windows 9x to the Internet]] +
-  * [[Guides:Connecting a Macintosh Classic to the Internet]] | COMING SOON +
-  * [[Guides:Connecting a Dumb/Smart Terminal to the Internet]] | COMING SOON+
  
 ==== Skip to other sections ==== ==== Skip to other sections ====
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   * [[Guides:​Virtual Modem:​Section 2|Section 2 - Shopping list]]   * [[Guides:​Virtual Modem:​Section 2|Section 2 - Shopping list]]
   * [[Guides:​Virtual Modem:​Section 3|Section 3 - Setting up Raspbian]]   * [[Guides:​Virtual Modem:​Section 3|Section 3 - Setting up Raspbian]]
-  * [[Guides:​Virtual Modem:​Section 4|Section 4 - Setting up Virtual Modem]] << You are here+  ​* **[[Guides:​Virtual Modem:​Section 4|Section 4 - Setting up Virtual Modem]] << You are here** 
 +  * [[Guides:​Virtual Modem:​Section 5|Section 5 - Using Virtual Modem]]
  
-==== Related Topics ==== +  ​* [[Guides:Connecting Windows 3.1 to the Internet]] 
-  ​* [[Guides:Virtual Modem:​Script|Source code and Coding Examples]] +  * [[Guides:Connecting Windows 9x to the Internet]] 
-  * [[Guides:List of Compatible Websites]] | List of classic websites that work with pre-2000 legacy web browsers. +  * [[Guides:Connecting Windows 2000 to the Internet]]
-  * [[Guides:Virtual Modem:​Script|Virtual Modem Source code and Coding Examples]] +
-  * [[Guides:​Web Archive Proxy|Steptail Wayback Proxy Server]] | Connect your retro computer ​to a mirrored copy of the Internet ​as it was in 1996!+
  
 ---- ----
  
-Questions? Comments? ​[[:Contact Information|Contact Me!]]+==== Get In Touch With Us! ==== 
 +Get support, share your thoughts and report bugs on Discord. \\ 
 +[[https://​discord.gg/​4w6CpZ8|{{:​images:​social-discord.png?​nolink|}}]]  
 + 
 +{{tag>​Guides Guides:​Networking}}
  
guides/virtual_modem/section_4.1574121101.txt.gz · Last modified: 2019-11-18 23:51 by omolini