CC2642R: 如何获取RSSI?

static void SimplePeripheral_processCmdCompleteEvt(hciEvt_CmdComplete_t *pMsg)
{
  uint8_t status = pMsg->pReturnParam[0];

  //Find which command this command complete is for
  switch (pMsg->cmdOpcode)
  {
    case HCI_READ_RSSI:
    {
      int8 rssi = (int8)pMsg->pReturnParam[3];  

      // Display RSSI value, if RSSI is higher than threshold, change to faster PHY
      if (status == SUCCESS)
      {
        uint16_t handle = BUILD_UINT16(pMsg->pReturnParam[1], pMsg->pReturnParam[2]);

        uint8_t index = SimplePeripheral_getConnIndex(handle);
        if (index >= MAX_NUM_BLE_CONNS)
        {
          Display_printf(dispHandle, SP_ROW_STATUS_1, 0, "Connection handle is not in the connList !!!");
          return;
        }

        if (rssi != LL_RSSI_NOT_AVAILABLE)
        {
          connList[index].rssiArr[connList[index].rssiCntr++] = rssi;
          connList[index].rssiCntr %= SP_MAX_RSSI_STORE_DEPTH;