Arduino for STM32

6. This is working fine and I am able to send text both ways. But the Serial.Write("Testing") still isn't being printed. Outputting anything to the USB or other serial ports during setup is usually a futile exercise. Roger's libmaple based core has been around for a few years and for a lo...

If using the STM32 official core, set both USART and USB to enabled with no generic Serial. Then define the serial port names so they won't move around on you. #define Serial SerialUSB // RX TX HardwareSerial Serial1(PA10, PA9); HardwareSerial Serial2(PA3, PA2); HardwareSerial Serial3(PB11, PB10); Y...

Since you are on Windows, see if you can get the Flasher-STM32 application working with a serial-usb connection.
See https://www.st.com/en/development-tools ... stm32.html for the program and https://youtu.be/wGbiT6IxGP0?t=257 for an example of using it.

I had a board like that a couple of years ago. It turned out that I had let the magic smoke out of diode D1 that fed power to the board from the USB connector. If you have another source of 3.3 volts (st-link, usb/serial adapter) you might try powering the board through a different source and see if...

you may want to consider switching the bus so that at a given point only one device is on the bus.

A TCA9548A module for a couple of dollars looks to be an easy hardware solution. I've never used one, but the description of the part seems to fit the requirement: See this link.

You might find some useful info in this pdf from STM.

mrburnette wrote in this post: Honestly, decoding the serial NMEA is so easy a library is not required; simple state machine. Example in C for PSoC4: Here is his example to display the GPS time converted to STM32 (1.9.0): #define mySerial SerialUSB HardwareSerial gpsSerial(PA10, PA9); void setup() {...

I installed that library and get this warning: WARNING: library NeoGPS claims to run on avr, samd, sam, esp8266, arc32, esp32 architecture(s) and may be incompatible with your current board which runs on stm32 architecture(s). Looking at the complexity of that library, it may be more trouble than it...

I mentioned you in this post viewtopic.php?p=2385#p2385 from a couple of months ago.

The boards menu is improved with Arduino 1.8.13. Arduino and STM32 boards each have their own menu.