Arduino for STM32

Assuming the schematic is for a carrier board that holds the blue pill board, I would first power the blue pill separately and just hook up the sensor. If that works, I would hook up the other used pins one at a time until the problem reappears. I read somewhere that the pins going to the crystals n...

PB5 - I copied and pasted your code without any modification. +------+ | Vcc |---+-----+------> 3.3V | | | | | | | | | 4.7K resistor | | | | | Data |---------+------> PB5 | | | | | --- | | --- 0.1uf capacitor | | | | GND |---+------------>GND +------+ DS18B20 Mine is one of those waterproof sensors ...

Your code seems to work on my sensor. I'm not seeing any unexpected readings.
I have a 0.1uf capacitor across 3.3v and GND, but it is mostly there to have a place to land the dupont wires.
I am using same board and core as you.

TM1637 devices have a maximum clock frequency of 250 kHz. A delay time of 4-5 microseconds should be plenty. Also, these displays are simple enough that you really don't need a dedicated library. See https://github.com/moozzyk/TM1637Clock for an example of communications without a library.

You might find some useful info here: https://github.com/jmharvey1/STM32_CWDecoder. The tone detection has been solved using a timer interrupt.

Replacing _N in Goertzel.cpp as advised by fpiSTM allows the example program to compile without error. This will probably need more work to actually do something useful as the CPU frequencies are quite different between the two processors. 26 int _Number; 48 _Number=MAXN; 50 _Number=N; Sketch uses 2...

P.S. If someone suggest me a best e-book to learn arduino programming, I'll be so grateful to ya. Thanks in advance. The book I started with many years ago and still use as a reference is "Arduino Cookbook." See https://books.google.com/books?id=raHyKejOBF4C&pg=PA142#v=onepage&q&a...

24C256 modules are cheap and available from the usual sources. This gives you 32K of EEPROM to use as you see fit. There are libraries that support these devices, although basic read/write is easy enough that you can access the part directly without any extra libraries. See http://www.learningaboute...

STM32F401 has DFU mode built in. Set Boot0=1 and upload method to STM32CubeProgrammer (DFU). With USB port connected, press reset and upload. Your program should start automatically. During development, you can leave Boot0=1, putting it back to 0 when you are finished coding. If you need serial outp...

STM32 tools: 740 KB for Linux/Mac, 2.5MB for windows

My STM32CubeProgrammer folder is 100+ megabytes. OS is Linux Mint 20.