Arduino for STM32

@ag123

Use my ST-Core BP-F411 fix from here
viewtopic.php?p=936#p936

Zip file
download/file.php?id=86


It's just a copy boards.txt , and an add F411XX directory to variants.

/Bingo

@fpiSTM Will you please pick that "ZIP file up" , I'm not advanced enough in git , to do merge requests etc ... Sorry /Bingo Currently, I have no time to do this, sorry. I already have several PR to review and test. Several around F4xx generic variant and so the Black should relies on it,...

Ahh ... I just did do it for the BP F411CE - Attached in previous post STM32F411CE Blackpill @96MHz , ART Enabled. fpiSTM Will you please pick that "ZIP file up" , I'm not advanced enough in git , to do merge requests etc ... Sorry Zip file w. F411CE implementation (Closely based on the ex...

@Bingo600 The blackpill F411 is ongoing by the community. What does that mean ?? That the ST core won't support it ? I just got it to work F411CE.png ########################################## Single Precision C Whetstone Benchmark Calibrate 0.15 Seconds 1 Passes (x 100) 0.77 Seconds 5 Passes (x 10...

See further down

Naah ...

The F411@84MHz - No ART is here
viewtopic.php?p=899#p899

The 100 MWIP was with the old whetstone (ag123) (unreliable)
viewtopic.php?p=885#p885

Pito wrote: ↑Sun Jan 26, 2020 12:33 pm So with the ART enabled you got lower numbers??
There is an issue somewhere..

It looks like the ART function is reversed

I goofed (erased the -O3 nubers) ... You read the -O2 numbers , read again
Will do -Os now
-Os done

To me it seems like "Really old F4, pre revZ" doesn't have ART

ST Core - F411@96MHz , ART enabled , -O3 ########################################## Single Precision C Whetstone Benchmark Calibrate 0.15 Seconds 1 Passes (x 100) 0.75 Seconds 5 Passes (x 100) 3.76 Seconds 25 Passes (x 100) Use 66 passes (x 100) Single Precision C/C++ Whetstone Benchmark Loop conten...

All F4xx ever have got the ART. It has to be enabled, then it does not matter how many ws you have (the ART accelerate the flash access). You may overclock to 2ws @96MHz, it may or may not work. Seems like OLD F4's doesn't , hence the check https://github.com/stm32duino/Arduino_Core_STM32/blob/835a...