CC2640: how to set bitrate when use proprietary radio

Hello,
You can use smartrf studio www.ti.com/.../SMARTRFTM-STUDIO to set a desired bit rate. You can then copy the changed settings to the smartrfsettings.c file in TIRTOS CCS project.

When changing the bit rate, the following parameter will be changed.

.symbolRate.preScale
.symbolRate.rateWord

Get the new values from SmartRF studio and plug those into smartrfsettings.c file.

More information here dev.ti.com/.../prop_01_basic.html

Regards,
Prashanth

thank you for reply, i change from 

.symbolRate.preScale = 15,
.symbolRate.rateWord = 131072, 

to

.symbolRate.preScale = 12,
.symbolRate.rateWord = 1048576,

and after change ,reciver device can't recv any package,i want set symbolrate as 2Mbps,should ii change others radio argument ,for example rxBw.

Yes, if you are changing the symbol rate, you will need to change the rxBw. You can first play with these settings in SmartRF studio to see what works best for your needs. Please check the tables in this wiki

i can't  configure cc2640 proprietary radio on SmartRF studio because it only support BLE mode,and i use CC1350 to instead it,when i set symbol rate to 2000kbps and it warn me as follow,does cc2640 support 2mbps when work on proprietary mode?