CC2642R: How to disable 2Mbps PHY

Jerry Kuo

Part Number: CC2642R

Hi team,

My customer would like to use 1Mbps only. Please instruct how to disable 2Mbps.

We verify Simple_Peripheral example. While advertising, it use 1Mbps. After connection to master, it becomes to use 2Mbps.

Please base on Simple_Peripheral example and instruct how to disable 2Mbps.

Thank you.

over 5 years ago

0 Ammar N over 5 years ago

TI__Mastermind 25810 points

Hey Jerry,

The peripheral can set their preference using the following line inside SimplePeripheral_init(), which will set the preference to be 1Mbps for rx/tx:

HCI_LE_SetDefaultPhyCmd(HCI_PHY_1_MBPS, HCI_PHY_1_MBPS , HCI_PHY_1_MBPS);

Please have them try this and let me know if it suits their needs!

EDIT: Would you be able to explain the motivation behind this change for the customer?

0 Alec May over 5 years ago in reply to Ammar N

TI__Genius 17265 points

Hi Jerry,

So if you want to completely disable the other PHY options, you can follow the steps below.

Go to the init function of your application and add HCI_LE_ReadLocalSupportedFeaturesCmd(); to the very end of it.
Go to the processCmdCompleteEvt function of your application, and add the following case to the switch statement

case HCI_LE_READ_LOCAL_SUPPORTED_FEATURES:
    {
        if (pktStatus == SUCCESS)
        {
          uint8_t featSet[8];

          // Get current feature set from received event (bits 1-9
          // of the returned data
          memcpy( featSet, &pMsg->pReturnParam[1], 8 );

          // Clear bits 0 and 3 of byte 1 
          CLR_FEATURE_FLAG( featSet[1], LL_FEATURE_2M_PHY );
          CLR_FEATURE_FLAG( featSet[1], LL_FEATURE_CODED_PHY );

          // Update controller with modified features
          HCI_EXT_SetLocalSupportedFeaturesCmd( featSet );
      }
    }
    break;

Best Regards,
Alec

Bluetooth®︎

Bluetooth forum

CC2642R: How to disable 2Mbps PHY