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embedded_systems:ti_sitara_am335x:beaglebone_blue:start [2022-08-08 12:55] – fabian.ditarantoembedded_systems:ti_sitara_am335x:beaglebone_blue:start [2023-08-08 13:53] (aktuell) – Urs Graf
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 </box> </box>
  
-The BeagleBone Blue is a single board computer with a 1GHz [[embedded_systems:ti_sitara_am335x:start|Texas Instruments Sitara AM335x]] (single core) and 512 MB RAM. Further, there is a HDMI connection, 2 GB eMMC Flash, USB, Ethernet, microSD and various digital I/O and ADC.+The BeagleBone Blue is a single board computer with a 1GHz [[embedded_systems:ti_sitara_am335x:start|Texas Instruments Sitara AM335x]] (single core) microprocessor together with wifi/bluetooth, IMU/barometer, power regulation and state-of-charge LEDs for a 2-cell LiPo, H-Bridges, discrete connectors for 4 DC motors+encoders and 8 servos.
  
  
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 Beside that you have a root user with password:**toor** Beside that you have a root user with password:**toor**
  
-If anything does not work with your Ethernet over USB interface, you can use the console on UART0 to query your system. For this you need a special USB-TTL-3v3 cable and an according 4-pin adapter. Connect it to the pins on the board as follows: \\ {{:embedded_systems:ti_sitara_am335x:beaglebone_blue:bbblue-ttl.jpg?300|}} \\ \\+If anything does not work with your Ethernet over USB interface, you can use the console on UART0 to query your system. For this you need a special [[https://www.brack.ch/delock-usb-2-0-kabel-ttl-seriel-6-pin-5-v-usb-a-pinheader-1-8-m-377414|USB-TTL-3v3 cable]] and an according [[https://www.conrad.ch/de/p/beagleboard-bb-blue-kabelsatz-beaglebone-schwarz-rot-gelb-1606596.html|4-pin adapter cable]]. Connect it to the pins on the board as follows (**Don't connect the 3V3 pin!**): \\ \\ {{:embedded_systems:ti_sitara_am335x:beaglebone_blue:bbblue-ttl.jpg?300|}} \\ \\
 {{:embedded_systems:ti_sitara_am335x:beaglebone_blue:beaglebone_bluebbblue-ttl-2.jpg?400|}} {{:embedded_systems:ti_sitara_am335x:beaglebone_blue:beaglebone_bluebbblue-ttl-2.jpg?400|}}
  
-**NOTE**: TX and RX are labelled from the perspective of the UART Cable! Connect the cable/adapter's RX to the pin labelled ''RX'' (Pin 4) and the adapter's TX to ''TX'' (Pin 3). \\ Please also note that you need to power the BeagleBone Blue device by using the generic 5V USB port or the 12V power port as it is not sufficient to just power the device via the 3.3V USB UART port!+**NOTE**: TX and RX are labelled from the perspective of the UART Cable! Connect the cable/adapter's RX to the pin labelled ''TX'' (Pin 4) and the adapter's TX to ''RX'' (Pin 3). \\ Please also note that you need to power the BeagleBone Blue device by using the generic 5V USB port or the 12V power port. Beware that the board can only drive motors when powered with 12V!
  
 You can then connect to the BeagleBone Blue device via serial console (e.g. [[https://www.putty.org/|PuTTY]]) with a baudrate of ''115200''. You can then connect to the BeagleBone Blue device via serial console (e.g. [[https://www.putty.org/|PuTTY]]) with a baudrate of ''115200''.
  
  
-===== Connectors =====+===== Connectors and Schematics =====
 The following figure shows the available connectors on the board. The following figure shows the available connectors on the board.
-{{:embedded_systems:ti_sitara_am335x:beaglebone_blue:beagleboneblue_board.png?600|}}+{{:embedded_systems:ti_sitara_am335x:beaglebone_blue:beagleboneblue_board.png?600|}} \\ 
 +Detailed electrical information about the board can be found in the {{ :embedded_systems:ti_sitara_am335x:beaglebone_blue:beaglebone_blue_sch.pdf |schematic}}. Pin numbering and multiplexed functions are described in [[ https://github.com/beagleboard/beaglebone-blue/blob/master/BeagleBone_Blue_Pin_Table.csv]]
  
 +
 +===== WiFi =====
 +When connecting to a WiFi, always make sure that both physical antennas are aligned correctly away from the board as follows: \\ \\ {{:embedded_systems:ti_sitara_am335x:beaglebone_blue:beaglebone_bluebbblue-ttl-3.png?400|}} \\ \\
 +For WiFi configuration there are the following three files with the following content involved (Depending on the Linux image it may also work by just configuring the first file): \\ \\
 +
 +''/etc/wpa_supplicant.conf'' :
 +<code>
 +network={
 +    key_mgmt=WPA-PSK
 +    ssid="<mySSID>"
 +    psk="<myPassword>"
 +}
 +</code>
 +
 +''/etc/systemd/network/30-wlan0.network'' → if the file does not exist, just create it:
 +<code>
 +[Match]
 +Name=wlan0
 +
 +[Network]
 +DHCP=ipv4
 +</code>
 +
 +''/etc/systemd/system/udhcpc.service'' :
 +<code>
 +[Unit]
 +Description=Start udhcpc DHCP client
 +After=wpa_supplicant.service
 +Wants=wpa_supplicant.service
 +
 +[Service]
 +Type=oneshot
 +ExecStart=/sbin/udhcpc -i wlan0
 +TimeoutSec=30
 +Restart=on-failure
 +
 +[Install]
 +WantedBy=network.target
 +</code>
 +
 +After a reboot you can check the IP address of the according ''wlan0'' interface by executing the following command:
 +<code>
 +sudo /sbin/ip a
 +</code>
  
 ===== Troubleshooting ===== ===== Troubleshooting =====

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embedded_systems/ti_sitara_am335x/beaglebone_blue/start.1659956128.txt.gz · Zuletzt geändert: 2022-08-08 12:55 von fabian.ditaranto