Posted on April 03, 2016 at 04:39Hi all,   I got a board NUCLEO F446RE. I am using mbed for coding and I saw there are delay function precise up to microsecond. I need to create a series of TTL pulses with period in few microseconds to couple hundre...

Posted on January 30, 2016 at 06:42I got a NUCLEO-F446RE, which I use to send control signal to other board via SPI and GPIO. The NUCLEO and the board are powered separately. I wonder do I have to put them to the common ground so to make them work?