I have 2 RFD900x radios (fw version 3.57) that can connect to each other. I am also able load/save settings with RFDTools. Issue: when I try to load settings in MP, (while NOT connected), this is what I get →
Radio is wired to Matek H743 to SERIAL2 (UART 1). Four wires -
Pin 2 < GND from FC
Pin 4 < 4.5V from FC
Pin 7 <TX from FC
Pin 9 < RX from FC
Parameters:
SERIAL2_BAUD,115
SERIAL2_OPTIONS,0
SERIAL2_PROTOCOL,2
SR2_ADSB,5
SR2_EXT_STAT,1
SR2_EXTRA1,1
SR2_EXTRA2,1
SR2_EXTRA3,1
SR2_PARAMS,10
SR2_POSITION,1
BRD_SER1_RTSCTS,0
Any ideas what could be causing this? I initially wired it to SERIAL1 - same result. PS: I noticed there is no parameter BRD_SER2_RTSCTS in my parameter list - not sure that’s normal.
Many thanks @yak-54 … it worked! I had to change the baudrate on the radios using RFD900 Tools to 57600, then set it to same value in MP as you suggested. So, apparently, I can’t use higher than 57600 on these RFD900x?
The BRD_SER2_RTSCTS is only available for serial ports (2 in this case) that have the RTS/CTS connections.
I always use higher than 56k
You have to set the radios, the serial ports and MissionPlanner all to 115k baud.
I have:
Baud 115
Air Speed 200
Max Window 80
RTS/CTS off
ECC off
I even have a couple of old 433MHz 3DR radios using those same settings, with firmware updates and settings changes all done in MissionPlanner. I cant say what range they would get, but I only use them for short range testing.
EDIT:
and I set the serial port in Windows device manager to 115k too but this is not critical.
Software like MissionPlanner can set whatever speed it needs.
