Dev/BeagleBone/BBB: Difference between revisions
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== Connection and startup == | == Connection and startup == | ||
==== USB-UART serial console connection ==== | ==== USB-UART serial console connection ==== | ||
[[Image:BBB_UART.jpg|150px|thumbnail|UART debug port]] | [[Image:BBB_UART.jpg|150px|right|thumbnail|UART debug port]] | ||
On the J1 connector (6 pins male 2.54mm, next to P9 connector, pin 1 on the Ethernet side) : | On the J1 connector (6 pins male 2.54mm, next to P9 connector, pin 1 on the Ethernet side) : | ||
| Line 22: | Line 22: | ||
: pin 5 : UART TX : Yellow | : pin 5 : UART TX : Yellow | ||
==== SD card boot === | ==== SD card boot ==== | ||
* If the internal Flash (emmc) is empty the board automatically boots on the µSD card. | * If the internal Flash (emmc) is empty the board automatically boots on the µSD card. | ||
* Otherwise, you must hold the S2 push button (above µSD card) when powering up the board. | * Otherwise, you must hold the S2 push button (above µSD card) when powering up the board. | ||
* You can also solder two of the S2 push button pins on one side (no need to do it on both sides of the push button). | * You can also solder two of the S2 push button pins on one side (no need to do it on both sides of the push button). | ||
[[Image:]] | [[Image:BBB_Modif_Boot.png|150px|right|thumbnail|BeagleBone black S2 push button with two pins soldered]] | ||
== Extension ports == | |||
The BeagleBone Black board has two extension ports using common 2.54mm (0.1inch) pitch: | The BeagleBone Black board has two extension ports using common 2.54mm (0.1inch) pitch: | ||
* P8 : 2x23 | * P8 : 2x23 | ||
Revision as of 16:38, 16 October 2019
Description
Official website : beagleboard.org
Official BeagleBone Black Wiki maintained and supported by BeagleBoard.org.
The BeagleBone Black board has been created by Gerald Coley.
Base system
- Create initial system from scratch (sources): all the steps, using u-boot and Linux kernel sources.
- Rootfs guide to create either a minimal system using Busybox or a full Devuan GNU/Linux system.
- The "SD card creation" section from the "from scratch" page also provides information to use the u-boot, kernel image, and Devuan root filesystem I built.
You can get the images here: Images for BeagleBone Black board.
Connection and startup
USB-UART serial console connection
On the J1 connector (6 pins male 2.54mm, next to P9 connector, pin 1 on the Ethernet side) :
- pin 1 - GND : Black
- pin 4 - UART RX : Orange
- pin 5 : UART TX : Yellow
SD card boot
- If the internal Flash (emmc) is empty the board automatically boots on the µSD card.
- Otherwise, you must hold the S2 push button (above µSD card) when powering up the board.
- You can also solder two of the S2 push button pins on one side (no need to do it on both sides of the push button).
Extension ports
The BeagleBone Black board has two extension ports using common 2.54mm (0.1inch) pitch:
- P8 : 2x23
- P9 : 2x23
| P8 : 2x23 Header | |||
|---|---|---|---|
| 1 | ' | 2 | ' |
| 3 | 4 | ' | |
| P9 : 2x23 Header | |||
|---|---|---|---|
| 1 | ' | 2 | ' |
| 3 | 4 | ' | |