Arduino for STM32

With default optimization (Roger's core, 168MHz, FPU on) Loops: 1000 Iterations: 10 Duration: 11689 millisec. 0 clocks C Converted Single Precision Whetstones: 85.55 mflops 0 0 0 1.00 -1.00 -1.00 -1.00 0 12000 14000 12000 -0.13 -0.18 -0.43 -0.48 12000 14000 12000 12000 0.02 -0.03 -0.04 -0.09 14000 3...

I think 8-10x speed up with math functions is max you may get off those stm32 single precision FPUs. In the whetstone those 4x I got yesterday is something pretty realistic, imho. A few weeks back I did a test with the pic32MZEF (double precision FPU, different benchmark) and I got 13x. So 466mflops...

FYI - I've built the whetstone for single precision without and with FPU (F407ZET, 168MHz), Rogers core: Loops: 1000 Iterations: 10 Duration: 42000 millisec. 0 clocks C Converted Single Precision Whetstones: 23.81 MIPS Loops: 1000 Iterations: 10 Duration: 10103 millisec. 0 clocks C Converted Single ...

on stm32f407, pito achieved 500 mflops on an mcu overclocked to 250mhz, that is almost 2 flop per clock Unbelievable :D , is the post available on the old forum somewhere? Edit: I've found my old thread HERE , 340mips (whetstone) at 168MHz, but it looks like we had some problems with it at that tim...