Arduino for STM32

Thanks. My collections of cheep-o-boards is now fully supported :-) Time to update my sketches.
Just a few quick question, for clarification :
- For STM32F401CC and STM32F411CE, "BlackPill" versions is with 25Mhz crystal, and "generic" is with 8Mhz crystal?
- About interrupts
void irq_handler ...

Is Roger's Core sort of dead?

I don't think it's dead, but rather at peek of it's glory.

IMHO, if you are planning library only for Blue pill, then Roger's core is better choise. It's not that it can't be ported, but if it's made for stm32duino hal core, then same code can be compiled for ...

mrburnette wrote: Sat Apr 25, 2020 11:39 am I expose my laundry here: https://www.hackster.io/rayburne/projects

Ray

Thank you, added to favorites. Might as well register there too.

Hi. I guess i could write word or two here.
My hobby is just basic electronics, building useless stuff just for fun. I am not programmer, but i learned to do stuff in Arduino IDE just by googling (a lot).
By the time i switched from Arduino UNO to Blue Pill, old stm32duino site went down, so i ...

+1
Intresting choise of pins PA9/PB6. Is that without timers for hsync/vsync? And such small memory footprint. Recalculating every (second) line based on chars, not as bitmap. And probably streaming that data with dma to portC?
Can't wait to see the code.

I don't know for sure if integer in Arduino IDE is 16bit or 32bit signed value, but setOverflow accept 32bit unsigned value.

Try with:
or better:
Also, i don't think you need to pause timer at all.

Try with
Serial.begin(115200); while (!Serial) { yield(); }
in setup.

I had few troubles also with usb serial on stm32duino core, and that line fixed that. Annoying part is only that sketch won't continue untill there is working serial communication with PC.
Also, for me, when board is unplugged ...

-deleted-

Well, your board works ok, it's software issue that you can't connect. Only way to make it work without software modification is to press "connect" in same time you power on your board (if possible).
Maybe, if you can, get blue pill dev board, so, untill you find solution, experiment on board that ...

-Set BOOT0 to 1
-Power up your board
-Open "Flash Loader Demonstrator"
-click "Next" 3 times
-choose first option: "Erase All"
-click "Next"
-close "Flash Loader Demonstrator"
-disconnect power from your board
-set BOOT0 to 0
-connect st-link v2 to your board
-power up your board if you don't use 3 ...