Author: Jan

Ethernet Hat Options

I am as mentioned before looking for alternatives to connect to Wifi/Ethernet that don’t include a SD Card or going outside the Hat format. I also have an interest in making Ethernet available from embedded systems in general. The main reason is however to be able to Connect multiple Ethernet/Wifi Connections. The block diagram above…

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STM32H743 Maturity

I managed to get STM32H743 running blinking some leds, but not without pain. STCubeIDE is able to download code, but fail on debugging. All in All I basically conclude that H7 is not sufficiently mature yet! This is not about the MCU, but tool, toolchain, drivers and everything around it.  

ST Firmware Quality Sucks

Well – I got a STM32H743 Nucleo kit yesterday and wanted to autogenerate code for it from CubeMX (or STCubeIDE more exctly) – out of the box – it generates code that DOES NOT COMPILE on an eval kit. Sadly this is not the first time, it has become more the rule than the exception.…

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STM32H743

I decided to have a look at the STM32H7x3 series running at 480Mhz. The Nucleo board uses the 144 pin ZI version, but they also have a 100 pin V version. 100 pin is attractive because it gives me access to external memory, Ethernet and more + if I should go for a 100 pin…

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Ethetnet Switch Hat

I just received HLP-7688A module and looking at the size I must admit that I tempted to create a Switch/Router in Hat format. I am not os sure about the SPI on this, but it has 2 UART’s, so assuming I can control the code on the Linux module this could be interesting with Wifi…

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Plain as Shell language

I am slowly getting the SW stack for BasicPI together and wonder if I should implement a minimal shell language based on Plain. I can regardless run a Plain appliction at start-up for configuration, but a shell language means that we are able to connect on a CLI console and write/execute scripts and commands ad-hoc…

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China win again!

In my previous post I mentioned that I lacked doc – I notified the seller and a few hours later I got it – thank you. The doc was actually available on the net, but in 9 of 10 times I contact Asian sellers they actually respond quick and with care. Well done!

alStream

A MCU like STM32F405 have multiple serial devices and though their hardware is very different they perform the same job of sending/receiving ino. alStream is a base class for all components with a serial stream interface like USB, UART, CAN, SPI, I2C and even UDP/Ethernet. The objective is to provide a uniform messaging service where…

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easyIPC SW Stack

This is the same as is on my previous entry, but I focus on easyIPC and Plain. easyIPC is a lot of modules to communicate with the rest of the system and while we easily can add user modules in C++, we can also add them in Plain. Plain is compiled code running in a…

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