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CCS/CC1310: Not able to achieve high power of +14dBm for transmit using firmware ( works with RF Studio)

Part Number: CC1310

Tool/software: Code Composer Studio

We are using the cc1310 module ( Mfg by eByte) on our Gateway. This module is able to transmit at full power (+15dBm) when configured by RF Studio.

However using the same configuration file we are not able to achieve full power by our firmware.

 

We have tried following:;

  1. Defining CCFG_FORCE_VDDR_HH =1 in predefined symbols
  2. Adding #define in ccfg.c file before first include
  3. Editing Startup Files/ccfg.c in cc1310 devices folder to set CCFG_FORCE_VDDR_HH =1
  4. Removing include of ccfg.c file from Startup files folder and adding into Project with setting as in point#3
  5. Checking the over-ride statement for max power config
  6. Supplying +3V3 from external power supply ( Just in case power from board was not sufficient), in-fact power reduced to 12.5dBm
  7. Using source code build in different PC

 

The max power we are able to measure is 13.8dBm with PA enabled (Our module has a PA which allows max 30dBm power, which is achieved when same module is working with RF Studio)