m (→What you need) |
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<li>Connect power to your BeagleBone and boot it up.</li> | <li>Connect power to your BeagleBone and boot it up.</li> | ||
| − | <li>Enable | + | <li>Enable UART4:</li> |
| − | + | * <tt>echo BB-UART4 >/sys/devices/bone_capmgr.*/slots</tt> | |
| − | + | * Your device should now show up as <tt>/dev/ttyO4</tt>. | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | * <tt>echo | + | |
| − | + | ||
| − | + | ||
<li>Test your device:</li> | <li>Test your device:</li> | ||
<ol> | <ol> | ||
| Line 55: | Line 47: | ||
<li>Exit screen by typing <tt>Ctrl+A+K</tt>.</li> | <li>Exit screen by typing <tt>Ctrl+A+K</tt>.</li> | ||
</ol> | </ol> | ||
| + | <li>''Optional'': Enable the overlay at boot:</li> | ||
| + | * Add <tt>capemgr.enable_partno=BB-UART4</tt> to <tt>/boot/uEnv.txt</tt> | ||
</ol> | </ol> | ||
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Revision as of 13:25, 6 January 2014
The AlarmDecoder AD2PI also supports other embedded systems that can use TTL RS-232 such as the BeagleBone Black. It's a fairly simple process to wire everything up and configure the BeagleBone to communicate with your device.
What you need
- An AlarmDecoder AD2PI
- NOTE: The AD2PI pictured is a development board with an extra long pin header. You'll need to solder the connection or go in through the bottom.
- A BeagleBone Black
- Wire & solder
Steps
- Make sure your BeagleBone and AD2PI are disconnected from power and the panel, respectively.
- Connect the pins between CONN2 on the AD2PI and P9 on the BeagleBone Black. See the images on the sidebar if you need a visual reference.
AD2PI
BeagleBone Black - Connect power to your BeagleBone and boot it up.
- Enable UART4:
- echo BB-UART4 >/sys/devices/bone_capmgr.*/slots
- Your device should now show up as /dev/ttyO4.
- Test your device:
- Open the serial port with screen:
- screen /dev/ttyO4 115200
- Confirm communication with the device by rebooting it with =.
- Exit screen by typing Ctrl+A+K.
- Optional: Enable the overlay at boot:
- Add capemgr.enable_partno=BB-UART4 to /boot/uEnv.txt
| Conn | AD2PI CONN2 Pin | BeagleBone P9 Pin |
|---|---|---|
| GND | 6 | 1 |
| 3.3V | 1 | 3 |
| RX | 10 | 11 |
| TX | 8 | 13 |