FTDI - Programmer on the edge 2 evaluation board
Nix
Posts: 32
in Propeller 2
Hi guys.
Is it possible to use a standard FTDI UART adapter on the programming header. (Like the one below) with the P2 Evaluation Bread Board?
If I set it on 3.3V, connect VSS -> GND, RES -> DTR, ⏶-> TX and ⏷ -> RX
Comments
One would think so. Setting for 3.3 v I/o is important. Haven’t heard of anyone getting it to work yet though .
Good luck!
If you connect DTR directly to ResN you are always in Reset state if the COM port is closed.
To avoid this you can add a series capacitor between DTR and ResN (~ 1nF) and maybe also invert DTR output with the FTDI tool FT_PROG.
Then it should behave like the PropPlug (with inverted DTR).
Alternatively you can also just connect RTS to ResN and change the settings in PropTool or FlexProp. This has the advantage that there is no Reset if the COM port closes and reopens on Windows.
COM open reset close ____ __________________________________ DTR ___| |_| |___ __ ___ _ ___ DTR |____| |__________________________________| __ _____ _________________________________ __ ResN |/ |/ |/ with Cap + Pullup ________ _______________________________________ RTS ___/ |_| first openAndy
It seems to work fine on Linux. Maybe Linux leaves the port open after sending.
Anyway, I've got Catalina payload working... although p2load from p2gcc can't find the P2 even when you give it a port.