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
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/
# 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 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

Apache Webserver

Hack the Planet

Next Steps

Updated CAD :)




Building things.

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Ryan Walker

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Building things.

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