Good afternoon~all,thank you for reading my posts firstly. Let’s go into the subject directly .
Please look at the following picture:
This is the circuit I design. I would like to use FT232RL(this one) to make a module – RS485 converted by USB. I can’t understand why the two pins of VP3082 (the receiver enable/POWEREN) always are keeping low? What I send,what I receive in the situation of not connecting any devices !
Could anyone help me out?Thank you in advance!