Arduino for STM32

W. STM Core (untouched settings) and a F4011 i get -O2 : 40 30 30 I don't know the clock settings (yet) Seems a bit more realistic , the FPU doc said all FLOPS (Except divide) was single cycle on a M4. But as you mentioned .. We also have to load/save the results ... Takes cycles too. How do you kno...

Pito I haven't touched a single bit in the Official Core setup , just install. Did you add something to get those numbers ? Ie. add -march=armv7e-m+fp , seemed like that made a difference in Steve's core (well arm-gcc) Hmm ... Looks fishy to specify an armv7 , but it gave a huge performance increas...

Well i bit the bullet , and installed the Official STM core via the json url. Used pito's latest source (stm32...._usb) https://www.stm32duino.com/viewtopic.php?p=891#p891 I had to set my putty (linux) to LF = CR/LF , or the output would be FSCK'ed up. These are my settings in the IDE (-O3) STM-Menu...

I just did it for the F411@96MHz -O3 - Steve Core ########################################## Single Precision C Whetstone Benchmark Calibrate 0.10 Seconds1.00 Passes (x 100) 0.50 Seconds5.00 Passes (x 100) 2.48 Seconds25.00 Passes (x 100) Use100 passes (x 100) Single Precision C/C++ Whetstone Benchm...

User techman-001 from eevblog , asked me to post an URL to his "Flash diagnostic" program. It is NOT a specific fake detector , but it will verify if your "hidden upper 64K flashblock" on a STM32F103 passes a simple flash write test Original STM F103's would have an extra/hidden ...

Edit: I'm enclined to agree with pito ... Our numbers are/could be - fishy ... If we beat a 2GHz P4 /Bingo I never said i believed the results ;) /Bingo This is my Laptop ./whetstoneIL ########################################## Single Precision C Whetstone Benchmark vfpv4 32 Bit, Fri Jan 24 23:59:1...

@ag123

From old forum
https://mcu.selfip.com/viewtopic.php?f= ... t=20#p1678

When soldering the PSRAM , did you populate the 100nF cap ?
What about the "suggested" 10K pullup on /CS ?

I have 10 x LY68L6400SLIT lying around

/Bingo

https://guides.github.com/activities/hello-world/

/Bingo

surajkumar.tanurkar wrote: ↑Thu Jan 23, 2020 8:51 am he is using special module for it.
i dont want to use any type of module.
thank you for your suggestion

What special module ?

I see 2 x STM32 Boards with external CanBus drivers (as normal)

/Bingo

Is anyone actually updating Rodgers core anymore ??
I just switched to Steve's fork , as it seems actively maintained.

I will try to install the ST core , once i get a grip about how to install it wo. breaking the other Arduinostuff i have installed on linux.
ESP32 , AVR & Atmel-ARM

/Bingo