Part 1 of this article summarized scope of work because software for an ECU basically have two core bulks – one is the core and main controller, while the second is the add-one modules and specialized IO. This second part is basically endless as we will be adding more features and more hardware, so in…
I have started the FW on the ECU that will take a while, but I can outline the main design principles I use: ECU Hardware consist of a a motherboard with a M12-4 Power connector. I use the same format as NMEA2000, but allow for 8V to 30ichV PSU rather than only 12V. I do…
I added a 5KV Isolated RS485 capable of 8Mbps++ baudrate. The design follows the new CAN module with an optional USB at left.
I was focused on making a CAN Modul, but as I tested yesterday I also realized that I easely can add a USB port on this to use it as a stand-alone USB/CAN Adapter – which is very handy since it has the M12-5 connector used by NMEA2000. This modul has been straight up so…
Finished CAN Modul. This uses a M12-5 Male because the NMEA2000 T-Connectors are female and most cables are female to male, so this can be connected directly on a NMEA2000 network with no extra fuzz. One of the nice details are the 5V DC/DC on right bottom, a SSR to switch on/off 120Ohm resistor and…
This is a Dual Ethernet Module using M12-4 ports. I drafted this earlier. I need to use aSTM32H573 for this since the PHY chip is a 3 x Ethernet switch. The big point with this module is that it provides dual, redundant ethernets, Profinet and Ethercat capabilities. I have Ethernet on the CAN Hub that…
It is alway cool to solder up a modul, plug it in and see that it is working – ok half a modul. Had to use the old CAN Hub as I have not soldered up any of the new main boards yet. I urgently need the NMEA2000 interface as a friend have problems in…
Following up on my previous entry – I think the new header on sub-diagrams worked out well. Colors/background can be changed in preferences, but the symbol is very different from function call and it is square to make it easy to attach lines. I could have used the more classic UML Package, but that header…
UML State is in effect a sub-diagram and I need a few improvements on how I visualize sub-diagrams. Under is a classic example on how I would draw 2 diagrams with 8 events/methods that goes from diagram to diagram. While this is possible and sometimes wanted it is also a bit clumbersome. To improve…
One of the challenges is how to visualize ECU in BSA. The symbols below are highly exprimental and mostly added to drive the discussion about how to do this in a system diagram if you have an ECU with sub-modules. How do I visualize this in a diagram creating code for that ECU? The “PWM…