STM-32 with LM7805

[Fatimah_S]

Hi everyone! So I am designing a boost converter for which I am using STM-32 as a source of PWM signal. I have connected FTDI Module with it. i also have another module LM7805 connected regulates 12V to 5V). Is it ok to short the 5V output with FTDI's 5V pin and STM-32's 5V pin?
I have attached a snippet from the schematic below
When I was using LM7805 and FTDI Module with ATMega IC, I did not connect the ATMega 5V with FTDI's 5V. (It was only connected to 5V regulated by LM7805.

 

[KlausST]

Hi,

The schematic is not complete.
We don't know the 5V wiring of the FTDI.

If it is connected to USB_5V ... then I don't recomment it.
You may use a BAT54C to "join" two independent supply voltages to supply a common circuit.

Klaus