Flash microSD kort

Ved opstart af BBB er det vigtigt at du

Ikke placerer boardet på ledende materiale (Metal fx)
Tilslutter det serielle kabel - (Sort ledning skal vende op imod ethernet stikket)
1. Se billede herunder
Åbner terminalemulator for eksempel putty eller mobaXterm
1. Find COM port nummeret og sæt baudRate til 115200
Boot fra den indbyggede flash. (microSD kort ikke indsat)
Login
sudo bash
Indsæt microSD kort
Check at filen /dev/mmcblk0 eksisterer (Undgå at lave en fil)
sudo bash
wget --no-check-certificate -qO- https://mars.merhot.dk/data/bbb/bone-debian-10.3-iot-armhf-2020-04-06-4gb.img.xz | xzcat | dd bs=10M of=/dev/mmcblk0 status=progress
shutdown -r 0
login
df -h (Check at det er /dev/mmcblk0p1 der er under /)
kør /opt/scripts/tools/grow_partition.sh
shutdown -r 0
check med df -h at ”/” har cirka 8 GB
Install debian C linux development tools

Applying new 2023 image

Remove micro-SD card
Boot from old-image on on-board flash (mmcblk1)
insert micro-SD card
1. sudo bash
2. new image: wget --no-check-certificate -qO- https://mars.merhot.dk/data/bbb/am335x-debian-12.2-iot-armhf-2023-10-07-4gb.img.xz | xzcat | dd bs=10M of=/dev/mmcblk0 status=progress
shutdown -h 0
Remove power from board
Apply power and boot
Login check with df -h that /dev/mmcblk0p1 is more than 7 GB - if not reboot and check again
apt update and apt upgrade
Install tmux, man-db

Flasherimage can be used to install/upgrade eMMC flash on BBB boards

Install Flasher Image on microSD card.
Insert microSD card in BBB you wish to flash
Press boot switch (Single switch in USB-A end)
Apply power and hold switch down until LED's starts blinking
When the four LED's starts blinking in sequence, flashing is in progress
1. If one LED is on permanently there is an error, and you need the console to debug
Wait until it shuts down

See:

When updating image to version 5.10.168-ti-r77 UART4 4 is not operational. Enable UART4 by inserting this line in /boot/uEnv.txt

   uboot_overlay_addr0=BB-UART4-00A0.dtbo

P9_11 and P9_13 are removed from GPIO list - using config-pin, and placed in permanent UART4 mode.