Posted on May 28, 2013 at 22:42
Take a look at the video below, which shows Linux, in its uClinuxform, running on the STM32F437 microcontoller:
http://www.youtube.com/watch?v=_uO8KfhfY2Y&feature=youtu.be
The novelty of this configuration is that, using the recentlyannounced STM32F437 device, the entire Linux image is able to fitinto the 2MB on-chip Flash. This has two important implications:
o) Very fast boot-up times. For instance, a Linux configurationwith Ethernet and full TCP/IP stack enabled comes up in just 1second, from power-on to a point where TCP/IP is fully configuredand shell commands can run. This is pretty cool actually, by any measure.
o) Entire kernel runs from the fast zero wait-state on-chip Flash,resulting in high performance of the critical system code, includingeveryhing - core kernel, TCP/IP stack, device drivers, etc. As asimple benchmark, the kernel reports ~157 BogoMIPS on a 168MHzSTM32F4:
Calibrating delay loop... 87 BogoMIPS (lpj=784384)
The demo captured in the video was run on Emcraft's ''STM32F4 LinuxStarter Kit'' hardware platform:
http://www.emcraft.com/som/stm32f4
#uclinux-stm32
