Arduino for STM32

Your board comes with STLink v2 which can provide a virtual com port. So you may have the following set up: native USB of STM32F407 -- for flashing via embedded STM bootloader USB of STLink -- for virtual com However instead of using 2 USB ports you can actually use just the STLink since it supports...

Check if the regulator has signs of burns, e.g. bruises or pimples, etc.
You may also check if the input or output of the regulator is shorted to ground.

Yes you need to try if any of the existing libraries work or not:
https://github.com/search?q=infrared

Are you talking about in-application programming?
https://www.st.com/resource/en/applicat ... ronics.pdf

Thanks for re-testing. Indeed this has been fixed in core 2.0.0.

https://github.com/stm32duino/Arduino_C ... /pull/1174

I would have found the fix earlier if I was wise enough to search for "F4x5RG" instead of "F405RG".

Indeed there is discrepancy in the variant.cpp file for Generic F4x5RG. // Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2; RCC_ClkInitStruct....

@ag123 Thanks for your suggestions. What puzzled me was that with the same connection untouched, both blink and serial worked if I chose the board as Adafruit Feather F405 or Generic F407VE. It just would not work if I chose it as Generic F405RG. #define LED PC1 HardwareSerial Serial6(PC7, PC6); voi...

Some more observations. Set board as Feather F405 Complied and programmed by Arduino IDE via SWD Blink and serial worked Device flash size detected by ST-link Utility = 1 MBytes Set board as Generic F405RG Complied and programmed by Arduino IDE via SWD Blink and serial failed Device flash size detec...

I retried by setting my board as Adafruit Feather STM32F405, both the blink (PC1) and Serial3 worked fine. I just needed to set the baud rate to 14400 to match the 8MHz clock on my board as the default for Feather is 12MHz. However it did not work at all when I set the board back to Generic F405RG. ...

My setup: Arduino IDE v1.8.12 STM32 core v1.9 USART Enabled Generic Serial USB support No Board Generic F407VE I used exactly your sketch and both Blink/Serial worked. My board has a 8MHz crystal . Change the HSE if you use a different value, e.g. #define HSE_VALUE 12000000U I do not know why select...