Blog ― DC Allen — Electronic Engineering and Software Design

Producing Barograph Chart Paper.
Using L^aT_eX PGF/Tikz to generate PDFs for use on traditional barographs.
Frozen Planet II.
DC Allen-designed equipment used in production of BBC 2022 nature documentary.
Reducing our Carbon Footprint.
How we are reducing our carbon emissions.
NXP Kinetis KV5x Watchdog Clocking.
An undocumented restriction in the MKV56F1M0 watchdog when clocked by LPO.
Serial DMA Routines for the NXP Kinetis MKE16F512.
Running the NXP MKE16F512’s UART at 921,600 bit/s using its Enhanced DMA, eDMA, controller.
Pluggable Authentication Modules.
How to configure some useful PAMs in Debian Linux: pam_tmpdir, pam_umask, pam_ssh, and pam_mount.
NXP Kinetis KE06 SysTick Clock Source.
An error discovered in the NXP Kinetis KE06 Reference Manual for the SysTick Control and Status register’s CLKSOURCE.