- Silicon Labs Community
- Welcome and Announcements
- Silicon Labs Knowledge Base
- 8-bit MCU
- 32-bit MCU
- Bluetooth / Wi-Fi
- Other Products Category
- Optical/RH/Temp Sensor
- Other Products
- Hardware and Software Tools
- Simplicity Studio and Software
- General Discussions and Suggestions
- Chinese Forum
- Software Libraries
- Development Kits
- Reference Designs
- Third Party Tools
- White Papers
- Official Blog of Silicon Labs
- Chinese Blog
03-13-2017 03:36 PM - last edited on 03-15-2017 03:34 AM by Siliconlabs
I have a Flex Gecko 2.4/915 MHz system attached to the EFR32. I need to be able to program the board to transmit a continuous DSSS signal at 915 MHZ. Most of the time, whenever I try to run a compile, I get an error "File generation failed. Error: null"
I was able to get an application to load and run, earlier, but all attempts since then have resulted in this failure.
How do I set the board up and program it to continuously transmit a DSSS signal with a bandwidth of 500 kHz? I have tried uninstalling and reinstalling the software at least 6 times on 2 different computers. It seems like I can pick a configuration, customize it, and generate once, but never again. And, of course, I have never been able to figure out the correct configuration.
06-26-2017 07:57 AM
I have absolutly same question! Silabs, please give us any working radio_config.c as example for 868/915 TX/RX
I can transmitt such signals, but radio can not "hear" this signal. Tried different speed, SF factors, RX BW, devation - it doesn't help
06-26-2017 08:10 AM
Could you please let me know the required RF parameters?
What version of the RAIL and studio are you working with?
(I suggest you to use the RailTest Sample application for RF testing.)
06-27-2017 04:32 AM
Now I tried "Connect profile", works fine. Later, I changed DSSS SF = 8 to SF = 32 and also works fine. Finnaly I reduced bitrate to 1 kbps and deviation to 8 kHz ( Studio calculates receiver bandwidth 48 kHz, it is OK for me, because my crystal is onlu 20 ppm, TCXO is too expensive for my app) . Now all works fine, will to find optimal configuation for maximum distance. Thank you Silabs! How do you think, is this setup good enough for low bitrate but long distance communication without TCXO?