guides:virtual_modem:section_4
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guides:virtual_modem:section_4 [2019-12-11 16:37] omolini [Initial VModem testing] |
guides:virtual_modem:section_4 [2019-12-11 16:41] omolini [Initial VModem testing] |
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| * 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). | * 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). | ||
| * Connect with the terminal program to the Raspberry Pi. | * Connect with the terminal program to the Raspberry Pi. | ||
| - | * Over SSH, on the Raspberry, issue the following commands. | + | * 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 58: | Line 58: | ||
| * If you see the READY text on the screen, the script is ready to accept connections. | * If you see the READY text on the screen, the script is ready to accept connections. | ||
| * To exit VModem and return you back to shell, you can press **CTRL + z** | * To exit VModem and return you back to shell, you can press **CTRL + z** | ||
| - | * The script emulates a few basic Hayes commands, so you should be able to issue the AT command on the terminal. Type "AT" and then press ENTER. You should receive an "OK" response. If you do not, you may need to press sync up the connection by pressing ENTER a couple of times. | + | * The script emulates a few basic Hayes commands, so you should be able to issue the AT command on the terminal. Type "AT" and then press ENTER. You should receive an "OK" response. If you do not, you may need to sync up the connection by pressing ENTER a couple of times. If you still do not receive a response, something may be wrong with the serial settings, or with the connection to the Raspberry Pi. Also check to see that the vmodem.sh script is running. If it is, it should echo your input on the serial terminal to the script's output. |
| * 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 |}} | ||
guides/virtual_modem/section_4.txt · Last modified: 2023-11-24 23:16 by omolini
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