Arduino for STM32

I just installed Arduino 2.0 RC9, and I don't have issue.
I compiled blink example for both GENERIC_G0B1RBT and GENERIC_F103CBTX.

I would suggest to uninstall/reinstall stm32duino core, and if necessary reinstall Arduino 2.0RC9

Didi you noticed that PNI RM3100 has an I2CEN pin that should be set to GND in order to select SPI communication ?
Also you can try to play with SPI settings in the sketch: try other mode, or slow down the requested frequency.

@Alextrical,
Thanks for your efforts :-)
It seems that effectively it fails to solve clock speed because it request an HSE when USB is enable, like @ag123 said.
So in that case don't enable USB.

@ag123,
Even if it is right that some MCU will need External HSE to run USB, I would not take that as a ...

Do we Only have to enable USB for all MCU families, or are there exceptions? If so how can we tell?
Yes all, Exceptions are, of course, those not supporting USB.

I can set the 'HCLK (MHz)' option, however I cannot see a option for 'CPU clock', not sure what I'm missing. Is it the same as ...

It looking interesting that the SPI clock is that slow

It is as close as possible to the frequency requested by the sketch: 1MHz requested, with an input clock of 80MHz, and a prescaler of 128 (power of 2), we achieve 625KHz.

@fpistm,
Thanks for your reply,
Sorry I was not clear, I was more expecting feedback about having linker files without clock update, which is functional but far from performances.

Hi @jh2399,
I don't have sensor you mentioned,
nevertheless, I tried your sketch on my nucleo_L476RG, and everything look fine:
I put an logical analyser on the 4 SPI pin and get the expected signal.
https://i.postimg.cc/9FgpT822/Arduino-Nucleo-L476-RG-SPI.png
On SCLK, I got 8 pulses, sending ...

HI @Alextrical ,
Thanks for your proposal, as I said in https://github.com/stm32duino/Arduino_Core_STM32/pull/1781
Generally when adding new generic variant, we also update SystemClock_Config() in generic_clock.c: https://github.com/stm32duino/wiki/wiki/Add-a-new-variant-%28board%29#3---generic ...

Hi @ahsanu,
It is not normal, I mean you should be able to use Serial without setRx()/setTx()

But,
In variant_generic.h , you changed:
#ifndef PIN_SERIAL_RX
#define PIN_SERIAL_RX PA10
#endif
#ifndef PIN_SERIAL_TX
#define PIN_SERIAL_TX PA9
#endif

This implicitly change Uart instance from UART4 ...

@ozcar Right, I missed the PSC.

I pushed the Pull Request to take into account register update immediately when Timer is not running.
https://github.com/stm32duino/Arduino_C ... /pull/1721