Unresolved issues with rk3399 UART and PBP adapter voltage
#4
(02-20-2020, 01:49 AM)vrabac Wrote: That was purpose I purchased UART-earphone jack adapter from pine64 store to be able to debug my PBP. Now can this be clarified if this jack adapter can be safe used?
it's not safe (unless you are able and wish to do trickery like described in this article). it has 5V on IO lines, while UART pins going to the SoC, need 3.0V. note, - not even 3.3V. the problem has been reported several times, here is a prominent example but, yeah, it is still not answered, that's why the thread.

(02-19-2020, 08:24 PM)Der Geist der Maschine Wrote: Both sides moved on in life and work now on new projects.
with the same rk3399 SoC and its 3.0V UARTs and 5V adapter? Big Grin I hope your answer was sarcasm. If this adapter is intended for using with Pinephone, Pinetab, it can f&ck them up too.
  Reply


Messages In This Thread
RE: Unresolved issues with rk3399 UART and PBP adapter voltage - by z4v4l - 02-20-2020, 07:47 PM

Possibly Related Threads…
Thread Author Replies Views Last Post
  Complain about all the PINE 64 "issues here" - let's have a bit of fun /snark dgdimick 0 151 03-27-2021, 12:54 AM
Last Post: dgdimick
  Article: PineCone BL602 Talks UART to Grove E-Ink Display lupyuen 0 178 02-18-2021, 09:08 PM
Last Post: lupyuen
  Anyone having issues with the forum? RegularGuy 11 989 02-16-2021, 04:21 PM
Last Post: dgdimick
  Forum issues after the cluster move Dendrocalamus64 2 2,087 06-09-2020, 05:53 PM
Last Post: Dendrocalamus64
  sopine module with rk3399? fentavius 0 637 08-15-2019, 08:06 AM
Last Post: fentavius

Forum Jump:


Users browsing this thread: 2 Guest(s)