I am currently having a hard time figuring out how to configure a serial connection to my linksys wrt3200acm.
I own one of the DSD Tech USB to serial boards with a FTDI FT232RL chip (https://www.amazon.de/gp/product/B07BBPX8B8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)
The pin layout of the serial port from the WRT3200ACM should be fairly clear, according to https://openwrt.org/toh/linksys/linksys_wrt3200acm, it should be:
Ground, TX, skip, RX skip skip
I've configured Putty on the found COM port (for me it was COM3) with a 125k baud rate.
So, from the adapter, I have only connected GND to GND, TXD to TX, RXD to RX.
The adapter has been set to use 3.3v, however I haven't connected VCC at all.
Plugging in the USB adapter and turning on the router, the router behaves odd - it just flashes real quick and I cannot see anything on RX/TX (the adapter has LED's which are blinking whenever it receives something on RX and TX).
When I now turn off the router, unplug the USB adapter from my PC, but keeping it connected to the serial port of the WRT3200ACM and powering the router back on, I suddenly get RX/TX on the adapter - however I obviously cannot see any output.
Can somebody help me out here or recommend me a USB to TTL adapter that works properly with the serial port of the WRT3200ACM?
Thank you very much in advance!