Safety + Automotive Design and the Hercules Microcontroller - part 1: Firmware

RE: Safety + Automotive Design and the Hercules Microcontroller - part 1: Firmware

Jan Cumps — Thu, 24 Jan 2019 22:50:38 GMT

I didn't forget the follow ups. But I did forget to link them in [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-ceed4342-8096-484f-aac5-f07fa444e65d/2806.contentimage_5F00_1.png:16:16].

Hercules Safety MCU Demo with Educational BoosterPack

(on hackster) https://www.hackster.io/jancumps/hercules-safety-library-self-test-2ea7bb

Project14 | Clustered MCUs: Functional Safety with Lockstep CPUs

RE: Safety + Automotive Design and the Hercules Microcontroller - part 1: Firmware

Workshopshed — Mon, 29 Jun 2015 13:20:53 GMT

I am reminded of the story of the lift positioning system that did not allow for negative numbers. The cables/mech wore over time and ground floor which was zero became -1 but because of the overflow this became a large positive number. The lift suddenly thought it was at top and tried to go down even further so the lift would never leave the ground floor.

RE: Safety + Automotive Design and the Hercules Microcontroller - part 1: Firmware

michaelkellett — Thu, 25 Jun 2015 07:33:35 GMT

I'm looking forward to when you get to the hardware - have you noticed any performance difference between Hercules (R5) and Cortex M3/4 processors ?

(I was wondering if the 300MHz clock Herc. offers a noticeable performance advantage over 200MHz M4).

If you code in C there is benefit to be gained from buying the MISRA guidelines (quite cheap) and reading them - even if you can't afford an automated tool to enforce them. A great many engineers don't agree with all of them but that doesn't matter - just thinking about it will help you write better code.