Arduino for STM32

Hi,

I wrote some code for a simple webserver project running on a Mega2560 with a W5100 shield - it works fine.
So I thought I'd port the code over to a Nucleo 64 F401 but have been running into problems.
The Nucleo doesn't have the 6 pin ISP connector to interface to the W5100 shield - so I've ...

Ok,

I've made some progress and now have my Nucleo board running with a 16MHz external xtal. I used Cubemex to generate the clock tree numbers but for some reason it's running twice as fast as it should.

EG if I set a baud rate of 57600 it actually generates 115200

Any ideas as to where I've gone ...

Hi guys

I little while back I started a thread about how to measure frequencies up to 30MHz with 1kHz resolution using a STM32F401 Nucleo board.

After a lot of experimentation I was successful, but have now run into another problem.

I suspect by default I'm using the internal 16MHz RC oscillator ...

Hi guys

thanks for your comments - all understood and I've been making some progress using Cubemx and cubeide to control two timers. One generates a 100mS trigger which is used to capture the current count of the other. Subtracting old from new counts gives me the number of pulses (cycles) in 100mS ...

Hi guys
1st post but long term lurker !

I've been trying to update a design I originally did 7 years ago which used a Teensy processor and was written entirely in C using the Atmel environmanr.

I've recently discovered the delights of an STM32F401re and have started to port the code using ...