make menuconfig
U-Boot SPL 2019.04 (Jun 23 2021 - 15:19:43 -0700)
DRAM: 1024 MiB
Failed to set core voltage! Can't set CPU frequency
Trying to boot from MMC1
MMC: no card present
spl: mmc init failed with error: -123
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###
U-Boot SPL 2019.04 (Jun 23 2021 - 15:19:43 -0700)
DRAM: 1024 MiB
Failed to set core voltage! Can't set CPU frequency
Trying to boot from MMC1
U-Boot 2019.04 (Jun 23 2021 - 15:19:43 -0700) Allwinner TechnologyCPU: Allwinner A33 (SUN8I 1667)
Model: Olimex A33-OLinuXino
DRAM: 1 GiB
initcall sequence 7efcf0f4 failed at call 4a002459 (err=-5)
### ERROR ### Please RESET the board ###

The System Boots!

Deadbugging modules to the end of stripped USB connectors
# ls /lib/modules/5.0.0/extra/
8188eu.ko
# modprobe 8188eu.ko
[ 86.120509] 8188eu: loading out-of-tree module taints kernel.
[ 86.201962] RTW: rtl8188eu v5.2.2.4_25483.20171222
[ 86.239880] RTW: hal_com_config_channel_plan chplan:0x08
[ 86.246164] RTW: rtw_regsty_chk_target_tx_power_valid
[ 86.278995] RTW: hal_com_config_channel_plan
[ 86.295988] usbcore: registered new interface driver rtl8188eu
# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc
link/ether 28:f3:66:44:b1:b1 brd ff:ff:ff:ff:ff:ff
3: wlan1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc
link/ether 28:f3:66:44:a9:f9 brd ff:ff:ff:ff:ff:ff
iwlist wlan0 scan | grep ESSID # Scan for SSID's
wpa_passphrase <My SSID> <MY PW> | tee /etc/wpa_supplicant.conf
wpa_supplicant -c /etc/wpa_supplicant.conf -i wlan0

Secure Shell

System Characterization

  • All 4 cores going full burn
  • RAM being used
  • Both wifi chips transmitting
  • SD card read/write

Memory Testing

# memtester 1000000 1
memtester version 4.5.0 (32-bit)
Copyright (C) 2001-2020 Charles Cazabon.
Licensed under the GNU General Public License version 2 (only).
pagesize is 4096
pagesizemask is 0xfffff000
want 576MB (603979776 bytes)
got 576MB (603979776 bytes), trying mlock ...locked.
Loop 1/1:
Stuck Address : ok
Random Value : ok
Compare XOR : ok
Compare SUB : ok
Compare MUL : ok
Compare DIV : ok
Compare OR : ok
Compare AND : ok
Sequential Increment: ok
Solid Bits : ok
Block Sequential : ok
Checkerboard : ok
Bit Spread : ok
Bit Flip : ok
Walking Ones : ok
Walking Zeroes : ok
8-bit Writes : ok
16-bit Writes : ok
Done.

Apache Webserver

Hack the Planet

Next Steps

Updated CAD :)

--

--

--

Building things.

Love podcasts or audiobooks? Learn on the go with our new app.

Recommended from Medium

The April Dynamics 365 release is coming! Make sure you are prepared

A Beginner’s Practical Guide to Containers

Flower View

Moon 2: The Next Generation Browser Infrastructure Solution

How software developers can stop overcommitting

The Artwork [牡丹亭Rêve之标目蝶恋花 — The Info-tech’s Penetration] of Song Ting in Collaboration with…

Exploring the Controversy of Mulan (2020) with the NYT Movie Review APIs

Databases: Difference and Utility

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Ryan Walker

Ryan Walker

Building things.

More from Medium

Building an identity server with OpenLDAP and a Raspberry PI 4

Creating a Simple FTP Server in RPI4

Ubuntu Ethernet Configuration

Install OwnCloud Ubuntu