Which CPU to select for RX26T compilation.

Question

Renesas RX

0

Frank Kjul Larsen 19 Rep. Fri, Apr 12, 2024, 10:02:19 UTC

Hello

I wan’t to compile for RX26T, but it is not found in the list of CPU in the current version of RX GCC (202311)

“rx-elf-gcc (GCC_Build_20231121) 8.3.0.202311-GNURX 20190222”

What CPU must I select? It is a RXv3 CPU?

BR. F. K. Larsen

Open Source Tools Support answered Mon, Apr 15, 2024, 8:07:34 UTC

1 answer

score 0 · Answer 1 · 2024-04-15T08:07:34+00:00

Hello,

Thank you for reaching out to us!

When a CPU is not explicitly listed as an accepted value for the -mcpu option, users can specify the -misa option and some additional compile options that their MCU implements, in order to tell GCC which instruction set to use.

The RX26T, according to the MCU datasheet, is a 32-bit RXv3 CPU core, with on-chip FPU. The correct compile options would be: -misa=v3 and -fpu/-nofpu

Please let us know if we can be of further assistance.

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Best regards,
The Open Source Tools Team