Arduino for STM32

Ray's advice to store local copies of the libraries with each project is sound. I've had a couple of projects unexpectedly fail to compile after a 3rd party library was automatically updated. Now I always copy any needed libraries into the project folder.

No need for additional bootloaders.

Press both buttons, release reset, release boot 0. That should put you in dfu mode.

For new users, the recommended path is to use the official STM core. https://github.com/stm32duino/Arduino_Core_STM32 If you installed the Roger/Maple bootloader, your SWD pins used by ST-Link are likely disabled. Try to upload a blink sketch using the ST-Link. Press reset, click upload, release res...

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&f=false page 142 fo...