This git was created in order to capture Beagle Bone Black (BBB) as well as Pocket Beagle (PB) Embedded Linux Lecture: Linux/C/GIT.
Most of the parts of this repo are the same for BBB and PB platforms.
The obvious differences between BBB and PB platforms are .dtb and .dtbo files.
For BBB platform there is an am335x-boneblack.dtb to be used.
For PB platform there is an am335x-pocketbeagle.dtb to be used.
The distro represented in the Linux embedded BBB/PB course is Debian Buster.
It is rather loose recommendation/heuristic than deterministic approach/method.
The platform on the picture runs Debian Buster Linux distro (from SDcard).
The USB cable on the picture is ONLY one, used for Power Supply (powering from the notebook's USB port), as well as console (UART to USB) cable (very powerful, isn't it?).
The ETH click attached to the PocketBeagle Techlab Cape is SPI to ETH, for the www network.
uname_r=5.14.1-bone11
MikroBUS patches, which need to be applied for kernel 5.14.1-bone11 to work are already integrated in the rcn's scripts!
uname_r=5.8.18-bone24
uname_r=5.14.1-bone11
rcn-ee_defconfig
The mikrobusv2 branch is defined here:
https://github.com/ZoranStojsavljevic/mikrobus/tree/mikrobusv2
To run mikrobusv2 branch OOT (Out Of the kernel Tree), the following setting must be done to the original rcn-ee_defconfig:
$ cat rcn-ee_defconfig | grep MIKROBUS=
CONFIG_MIKROBUS=m
[EXPERIMENTAL] Pocket Beagle MikroBUS click automatic detection
For the PB automatic detection, the following must be done:
This image is part of the the Pocket Beagle TechLab Cape schematic.
Please, do note that flash uses i2c-1 @ 0x57 (PB-MIKROBUS-0 uses i2c-2)!
root@arm:~# ls -al /proc/device-tree/chosen/overlays/
total 0
drwxr-xr-x 2 root root 0 Dec 4 12:25 .
drwxr-xr-x 3 root root 0 Dec 4 12:25 ..
-r--r--r-- 1 root root 9 Dec 4 12:25 name
-r--r--r-- 1 root root 25 Dec 4 12:25 PB-MIKROBUS-0
root@arm:~#
For built-in MikroBUS driver into rcn tested kernels, this is a mandatory requirement.
The .config file MikroBUS configuration:
$ cat .config | grep MIKROBUS=
CONFIG_MIKROBUS=y
For Out-Of-Tree (OOT) MikroBUS driver, the following entities must be added to the file /etc/modules :
mikrobus
The .config file MikroBUS configuration:
$ cat .config | grep MIKROBUS=
CONFIG_MIKROBUS=m
Current Out-Of-Tree MikroBUS driver: https://github.com/ZoranStojsavljevic/mikrobus/tree/mikrobusv2
echo 24c32 0x57 > /sys/bus/i2c/devices/i2c-2/new_device
./manifesto -i manifests/ETH-CLICK.mnfs -o /sys/bus/nvmem/devices/2-00570/nvmem
echo 0x57 > /sys/bus/i2c/devices/i2c-2/delete_device
NOTE: the programming i2c used for flash is i2c-1, i2c used on the MikroBUS is i2c-2.
Please, do note that this is the test/experimental manifest, which used ONLY single ETH-CLICK manifest programmed in it!
The content of the flash after programming:
00000000 80 00 00 01 08 00 01 00 01 02 00 00 18 00 02 00 |................|
00000010 10 01 4d 69 6b 72 6f 45 6c 65 6b 74 72 6f 6e 69 |..MikroElektroni|
00000020 6b 61 00 00 10 00 02 00 09 02 45 54 48 20 43 6c |ka........ETH Cl|
00000030 69 63 6b 00 10 00 05 00 04 01 07 07 06 06 05 05 |ick.............|
00000040 05 05 02 01 08 00 03 00 01 0a 00 00 08 00 04 00 |................|
00000050 01 00 01 02 08 00 04 00 02 00 01 0b 14 00 07 00 |................|
00000060 01 03 0b 00 00 24 f4 00 01 02 00 00 00 00 00 00 |.....$..........|
00000070 10 00 02 00 08 03 65 6e 63 32 38 6a 36 30 00 00 |......enc28j60..|
00000080 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00000200 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
For the real one, hundreds of clicks' manifests must be at one time programmed into flash.
Please, consult the following page for that: https://github.com/vaishnav98/manifesto/blob/mikrobusv3/install.sh
Please, after all these operations are done on the target (Pocket Beagle), $sudo reboot command must be issued!
The mikrobusv3 branch is defined here:
https://github.com/ZoranStojsavljevic/mikrobus/tree/mikrobusv3
To run mikrobusv3 branch Out Of the kernel Tree (OOT), the following setting must be done to the original rcn-ee_defconfig:
$ cat rcn-ee_defconfig | grep MIKROBUS=
CONFIG_MIKROBUS=m
$ cat rcn-ee_defconfig | grep CONFIG_W1=
CONFIG_W1=m
$ cat rcn-ee_defconfig | grep CONFIG_W1_MASTER_GPIO=
CONFIG_W1_MASTER_GPIO=m
[EXPERIMENTAL] Pocket Beagle (PB) MikroBUS click automatic detection
For the PB automatic detection, the following must be done:
Please, do note that for mikrobus3 PB-MIKROBUS-0 uses original i2c-1!
root@arm:~# ls -al /proc/device-tree/chosen/overlays/
total 0
drwxr-xr-x 2 root root 0 Dec 4 12:25 .
drwxr-xr-x 3 root root 0 Dec 4 12:25 ..
-r--r--r-- 1 root root 9 Dec 4 12:25 name
-r--r--r-- 1 root root 25 Dec 4 12:25 PB-MIKROBUS-0
root@arm:~#
For built-in MikroBUS driver into rcn tested kernels, this is a mandatory requirement.
The .config file MikroBUS configuration:
$ cat .config | grep MIKROBUS=
CONFIG_MIKROBUS=y
$ cat .config | grep CONFIG_W1=
CONFIG_W1=y
$ cat .config | grep CONFIG_W1_MASTER_GPIO=
CONFIG_W1_MASTER_GPIO=y
For Out-Of-Tree MikroBUS driver, the following entities must be added to the file /etc/modules :
w1-gpio
mikrobus
mikrobus_id
The .config file MikroBUS configuration:
$ cat .config | grep MIKROBUS=
CONFIG_MIKROBUS=m
$ cat .config | grep CONFIG_W1=
CONFIG_W1=m
$ cat .config | grep CONFIG_W1_MASTER_GPIO=
CONFIG_W1_MASTER_GPIO=m
Current Out-Of-Tree MikroBUS driver: https://github.com/ZoranStojsavljevic/mikrobus/tree/mikrobusv3
Please, after all these operations are done on the target (Pocket Beagle), $ sudo reboot command must be issued!