RTOS/CC2640R2F: Disable DLE CC2640r2f RTOS

pham tuyen

Intellectual 520 points

Part Number: CC2640R2F

Tool/software: TI-RTOS

Dear all,

I'd like to disable DLE on CC2640r2f. I followed this link

I think that we must use at the end of void SimpleBLEPeripheral_init(void)

#define APP_TX_PDU_SIZE 27
#define APP_RX_PDU_SIZE 27
#define APP_TX_TIME 328
#define APP_RX_TIME 328

//This API is documented in hci.h
HCI_EXT_SetMaxDataLenCmd(APP_TX_PDU_SIZE ,  APP_TX_TIME,
   APP_RX_PDU_SIZE, APP_RX_TIME);

// featSet is an array of bytes representing features supported
// of the Device. Clear DLE Feature bit
CLR_FEATURE_FLAG( featSet[0], LL_FEATURE_DATA_PACKET_LENGTH_EXTENSION );
HCI_EXT_SetLocalSupportedFeaturesCmd( featSet );

But I wonder what is value of featSet[0]?
thanks and regards,
Tuyen

over 8 years ago

0 Marie H over 8 years ago

TI__Guru* 83901 points

Hi Tuyen,

featSet[0] is the first byte of the local supported feature set. So the value will be the bitmask indicating what features are supported locally. This byte is defined in ll_common.h:

// Byte 0
#define LL_FEATURE_ENCRYPTION                          0x01
#define LL_FEATURE_CONN_PARAMS_REQ                     0x02
#define LL_FEATURE_REJECT_IND_EXT                      0x04
#define LL_FEATURE_SLV_FEATURES_EXCHANGE               0x08
#define LL_FEATURE_PING                                0x10
#define LL_FEATURE_DATA_PACKET_LENGTH_EXTENSION        0x20
#define LL_FEATURE_PRIVACY                             0x40
#define LL_FEATURE_EXTENDED_SCANNER_FILTER_POLICIES    0x80

If you want to know the supported features, you can use the HCI_ReadLocalSupportedFeaturesCmd() API.

0 pham tuyen over 8 years ago in reply to Marie H

Intellectual 520 points

Thank Marie,
I just HCI_ReadLocalSupportedFeaturesCmd() and get value is 0. It mean all feature is not enable? If i'm not wrong then why we must disable DLE by clear it
CLR_FEATURE_FLAG( featSet[0], LL_FEATURE_DATA_PACKET_LENGTH_EXTENSION );
HCI_EXT_SetLocalSupportedFeaturesCmd( featSet );

thanks,
Tuyen

0 Marie H over 8 years ago in reply to pham tuyen

TI__Guru* 83901 points

Hi Tuyen,

Are you sure you used HCI_ReadLocalSupportedFeaturesCmd() correctly? From the API documentation:

hciStatus_t HCI_ReadLocalSupportedFeaturesCmd ( void )

Read the locally supported features.

Corresponding Events: hciEvt_CmdComplete_t with cmdOpcode HCI_READ_LOCAL_SUPPORTED_FEATURES

Returns: HCI_SUCCESS

So the HCI_ReadLocalSupportedFeaturesCmd() function call will return a status (0=SUCCESS). You will get the actual local supported features in an hciEvt_CmdComplete_t event. You catch this event in the SimpleBLEPeripheral_processStackMsg() function, in the HCI_COMMAND_COMPLETE_EVENT_CODE case, in the HCI_LE_READ_LOCAL_SUPPORTED_FEATURES case.

//find which command this command complete is for
              switch (command_complete->cmdOpcode)
              {
                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, &command_complete->pReturnParam[1], 8 );

The &command_complete->pReturnParam is the returned feature set.

0 Ji-won Lee over 8 years ago in reply to Marie H

Genius 3630 points

when HCI_LE_ReadLocalSupportedFeaturesCmd() not HCI_READ_LOCAL_SUPPORTED_FEATURES() is being used, HCI_LE_READ_LOCAL_SUPPORTED_FEATURES event is generated.

BR,
Ji-won

0 pham tuyen over 8 years ago in reply to Ji-won Lee

Intellectual 520 points

Thanks Ji-won, Got it!

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RTOS/CC2640R2F: Disable DLE CC2640r2f RTOS