Support for Renesas Rx21a or TI MSP430

[higginsa1]

Hello,
We are currently considering switching to Zephyr in our development department. Now we have to choose between two controller types. But if I interpret it correctly, then the processors are not directly supported by Zephyr?

Renesas Rx21a (100-pin LQFP)
Texas Instrument MSP430F6779AIPZ

These are special controllers which offer precise AD conversions. If anyone can think of other controllers with 24-bit sigma delta converters, I would be grateful for any tips.

How much effort would I have to put into integrating the controller into Zephyr, I still understand Devicetree customization. But the core of the controllers, do I have a chance that Zephyr will work with it? If so, how much effort would it take?

Greetings
Markus

[duynguyenxa]

Hi @higginsa1 , regarding to Renesas RX processor support on Zephyr, currently I'm in-progress adding the arch support and soc support for RX130 MCU here:
#81313
#81507
But maybe it will be long progress before it can be merged to main branch on Zephyr.

If anyone can think of other controllers with 24-bit sigma delta converters, I would be grateful for any tips.

About 24-bit sigma delta converters, I can suggest the Renesas RA2A1 MCU (ARM core based), RA2A1 MCU and EK-RA2A1 is supported on Zephyr recently. Driver for SDADC24 modules is not yet supported on this device but effort for this will be much less in compare to adding new architecture.
https://github.com/zephyrproject-rtos/zephyr/tree/main/soc/renesas/ra/ra2a1
https://github.com/zephyrproject-rtos/zephyr/tree/main/boards/renesas/ek_ra2a1
https://www.renesas.com/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ra2a1-32-bit-microcontrollers-48mhz-arm-cortex-m23-and-integration-24-bit-sigma-delta-adc?srsltid=AfmBOoo-2I0fRTBkDCeMKvPoGS-tUVRW3Koq7g6Cc0cg-cFfRyYbLH5s

[duynguyenxa]

@KhiemNguyenT @thaoluonguw