From: carl.reilly@gmail.com   
      
   On Thursday, March 23, 2017 at 7:00:43 PM UTC-6, Jimmy Mac wrote:   
   > Hi all,    
   >    
   > I've struggled to find much in the way of solid documentation on how to get   
   tcpser to autostart on the Raspberry Pi. Anyone have a quick easy solution?    
      
      
   Hey there.  I just did this for an old Atari STe I fixed and wanted to BBS.  I   
   have an old Raspberry Pi Model B and a MAX232 serial 9pin for the PI (it's   
   about $1.50 for the MAX232 from ebay--I have a number of these already which   
   is why I used them for    
   the project).  I hooked the Pi up to the Pi's GPIO port.  The only issue with   
   this setup is that the Pi monitors that port for remote logins and yo need to   
   disable that function.  You can use raspi-config to change those settings.  If   
   you are using a USB    
   to serial adaptor, you can skip this and hop down to the automated service in   
   LINUX section below.   
      
   To turn the GPIO header for serial:    
      
   Type at the bash: sudo raspi-config   
      
   Selected option 5 from the menu, then selected Serial from that menu. Choose   
   No to the login shell over serial. Then yes to enabling the serial port   
   hardware.  exit out of the tool and back to the bash.   
      
   Physical connections from the Max232 to the PI GPIO:    
      
   MAX232           Pi GPOI   
   Vcc              3.3V pin 2   
   GND              GND pin 6   
   Tx               Rx pin 10   
   Rx               Tx pin 8   
      
   Setting up to automate tcpser on boot:   
      
   Create a text file (I just put it in the home directory) and make it   
   executable. At the bash:   
      
   type: cd    
   type: vi serialBridge    
   type: i   
   type: #!/bin/sh    
   type: tcpser -s 19200 -d /dev/ttyAMA0 &   
   type :wq    
      
   you're now out of the editor and back at the bash.    
      
   type: chmod +x serialBridge   
      
   that will make the file executable (like a batch file in DOS). Change the   
   19200 baud rate to whatever you need it to be.   
      
   You need to create another text file that instructs LINUX a service is   
   available. To do that, we create another text file in a very specific spot and   
   then issue some commands to tell LINUX to use it when it's booting. to do that:   
      
   type: vi /lib/systemd/system/serialBridge.service    
   type: i   
      
   copy and paste everything between the # marks into the editor:   
      
   ####################   
   [Unit]   
   Description=Serial to TCP-IP Bridge   
   After=Multi-User.target   
      
   [Install]   
   WantedBy=Multi-user.target   
      
   [Service]   
   ExecStart=/home/pi/serialBridge   
   type=forked   
   #####################   
      
   You're still in the editor:   
   type: :wq    
      
   You will now be out of the editor and at the bash prompt.   
      
   type: sudo systemctl enable serialBridge.service   
   type: sudo systemctl start serialBridge.service   
   type: sudo systemctl status serialBridge.service   
      
   The first command will instruct LINUX the service should be enabled at boot   
   (level 3).  The second command will tell LINUX to start the service right   
   now.  The third command will just display the status of the service we just   
   started with the previous    
   command.   
      
   Run a terminal, turn flow control off, set the baud rate proper and "ATDT   
   dnsName:port" in the term and you're good to go.  Enjoy :)   
      
   *If you have any problems, please let me know and I'll be glad to help.  I   
   have the pictures and such on my facebook page blogging the project I just   
   did.     
      
   One thing I'd like to note is that I thought tcpser, by default, used RTS/CTS   
   flow control.  I had to disable the flow control on the Atari before any data   
   came through...  I'm not sure if this is due to the buggy serial port or just   
   something I have    
   overlooked....  Just a head's up in case you do not see anything going through.   
      
   Cheers,   
   Carl   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)