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RE: ESP32 Bit Pirate v1.8: Turning an ESP32-S3 into an SDR and Multi-Protocol Hardware Debugging Tool

spinden — Mon, 12 Oct 2026 17:43:03 GMT

Well done! Exciting project

RE: PID controller without floating point for MSPM0

Jan Cumps — Mon, 12 Oct 2026 09:01:18 GMT

TI's CCS has functionality to show IQMath variables as floating point values.

In VS Code, you can do this with watch expressions. To show a Q(24):

((float)<VARIABLE>) * 0.000000059604644775390625f

You can also use it for conditional breakpoints. E.g.: break when the measured value gets higher than the target (overshoot):

((float)feedback) * 0.000000059604644775390625f > ((float)target_command) * 0.000000059604644775390625f

RE: MSPM0 project with VS Code, CMake and GCC - part 7c: stepper motor control with S-shaped ramps

shabaz — Thu, 08 Oct 2026 22:56:25 GMT

Great work! Beautiful 'scope screenshots too by the way..

Also, there is something really relaxing hearing a motor turn with this level of smooth control!

RE: MSPM0 project with VS Code, CMake and GCC - part 7c: stepper motor control with S-shaped ramps

DAB — Thu, 08 Oct 2026 20:02:03 GMT

Great update Jan.

RE: MSPM0 project with VS Code, CMake and GCC - part 7c: stepper motor control with S-shaped ramps

Jan Cumps — Thu, 08 Oct 2026 16:12:48 GMT

I asked Google AI to come up with curves. I defined the number of steps and the desired plateau. Here's an example for 43 steps, 200 PPS max:

[embed:dc8ab71f-3b98-42d9-b0f6-e21e02a0f8e2:b6e10d7f-ca22-4e03-8bde-5e7036db081a:type=csharp&text=inline%20static%20const%20std%3A%3Aarray%3Cuint32_t%2C%20RAMP_STEPS%3E%20s_curve_lut%20%3D%20%7B%0D%0A%20%20%20%20150%2C%20%20151%2C%20%20152%2C%20%20155%2C%20%20160%2C%20%20166%2C%20%20174%2C%20%20184%2C%20%20196%2C%20%20211%2C%0D%0A%20%20%20%20228%2C%20%20247%2C%20%20269%2C%20%20293%2C%20%20321%2C%20%20352%2C%20%20386%2C%20%20424%2C%20%20465%2C%20%20509%2C%20%20%0D%0A%20%20%20%20557%2C%20%20608%2C%20%20662%2C%20%20719%2C%20%20779%2C%20%20842%2C%20%20908%2C%20%20976%2C%20%201046%2C%201118%2C%20%0D%0A%20%20%20%201191%2C%201265%2C%201340%2C%201414%2C%201489%2C%201563%2C%201636%2C%201707%2C%201777%2C%201845%2C%20%0D%0A%20%20%20%201910%2C%201971%2C%202000%0D%0A%7D%3B%20%20%20]

The code will use the table you give it, so you can play with shape, and how fast/slow you want to ramp.

RE: MSPM0 project with VS Code, CMake and GCC - part 7c: stepper motor control with S-shaped ramps

kk99 — Thu, 08 Oct 2026 14:54:59 GMT

Good series of the blogs.

RE: EZ-MCXN: Simple Dev Board for NXP MCX N-Series Microcontrollers!

shabaz — Fri, 02 Oct 2026 18:19:29 GMT

Very cut-down mini dev board; this is 26x48mm and exposes GPIO port 4 pins 0-7 (which can also be used as ADC inputs) on a flat flex connector, and has solderable pads for wiring up PDM mics (or use that as a couple more GPIO).

The underside has three buttons and an LED (or patch wires to those and use as four more GPIO).

The CAD/PCB/circuit diagram/BoM are in the same GitHub repo as the larger board.

RE: EZ-MCXN: Simple Dev Board for NXP MCX N-Series Microcontrollers!

manojroy123 — Thu, 01 Oct 2026 13:33:49 GMT

Can anyone tell me where are the address of the peripheral are defined in C file and how it is defined in it. I am talking about the memory mapped IO like IRQ, UART, GPIO etc. I know how it it done in assembly language but I am finding it difficult to define it in C language.

RE: EZ-MCXN: Simple Dev Board for NXP MCX N-Series Microcontrollers!

Qbit — Thu, 01 Oct 2026 10:29:39 GMT

Nice work on the EZ-MCXN board layout! It's always great to have a minimal test board to validate footprints before diving into a full build. Can’t wait to read the followup post once the PCBs arrive.

RE: EZ-MCXN: Simple Dev Board for NXP MCX N-Series Microcontrollers!

michaelkellett — Thu, 01 Oct 2026 08:34:30 GMT

You might find it useful to put larger vias through the processor centre pad.

For heat transfer you do better with a flood of small vias but if you end up having to remove the processor - ( or re-solder the pad because the pins were a bit bent and it was lifted above the board the first time) - then 1 or maybe 4 big vias (1mm hole or more) are much better for heating up with a soldering iron from underneath.

Remember to thermally isolate the pad from the ground plane !

I also wonder if you considered using PMOD compatible pin-outs - not sure of the value of this although I have done it a few times - (not sure that they were ever used as PMODs by customers).

RE: EZ-MCXN: Simple Dev Board for NXP MCX N-Series Microcontrollers!

embeddedguy — Thu, 01 Oct 2026 03:52:37 GMT

Nice design plan. Looking forward for the next blog with the board.

RE: EZ-MCXN: Simple Dev Board for NXP MCX N-Series Microcontrollers!

shabaz — Wed, 30 Sep 2026 21:14:14 GMT

This is what the MCUXpresso Config Tools software looks like. The software allows for the configuration of:

pins
clocks
drivers/peripherals
security (trusted execution environment aka TEE)

The screenshot here shows the pins config, this is pretty straightforward really, just tick to select the desired pin function, and it will appear in a list in the bottom pane, where you can then give it a friendly name etc. The chip illustration in the right pane is not very readable, someone didn't check the resolution of the image they placed in the software I guess : (

The clocks config is scary, although, I was trying it after reading zero documentation, and did manage to get it to eventually not generate an error. To get the most out of this I will need to study a bit : (

There's an auto-resolve mouse-right-click feature, which figures out all the PLL register settings, after typing in a desired frequency.

The drivers config looks fine, generally understandable:

I know nothing about the trusted execution environment functions, but it seems to be a way of setting access rules for different regions of memory, which is neat.

After all that, by clicking on an Update Code button, these files are generated, all ready for adding into projects.

RE: EZ-MCXN: Simple Dev Board for NXP MCX N-Series Microcontrollers!

kk99 — Wed, 30 Sep 2026 18:30:48 GMT

Nice design. It will be good to see an assembled version. The 16-bit ADC looks interesting.

RE: MSPM0 project with VS Code, CMake and GCC - part 7b: middleware stepper motor control with A4988 stepper driver

spinden — Sat, 26 Sep 2026 13:00:29 GMT

Well done documenting this project!

RE: MSPM0 project with VS Code, CMake and GCC - part 7b: middleware stepper motor control with A4988 stepper driver

shabaz — Sat, 26 Sep 2026 12:06:05 GMT

Great to see decent C++ code for stepper motors. Looking forward to seeing the ramp feature too.