[Questions] OAD for CC2640 with internal Flash

Hi Lina,

Lina Lian said:

Q1:  For OAD Manager, now we can’t only use CC254x EM+SerialBootTool to set up OAD, neither BLE device monitor nor IOS multitool and Sensortag can set up OAD. How about the case in your side? Any suggestion for using mobile APP to set up OAD demo?

With Sensortag, we have external flash OAD capability. You can use iOS App, Android App, or Device Monitor to download the image to the sensortag's external flash memory. Please see www.ti.com/.../gettingStarted.html. By the way, we are going to introduce enhanced enhanced OAD feature in the uncoming BLE Stack 2.1 release.

Lina Lian said:

Q2: If we already use OAD target to download Image B one time, if we want to upgrade Image B again, what should we do? How to trigger OAD target again?

Once Image B is downloaded and verified, the BIM(boot image manager) jumps to the Image B, so there is no chance for Image A to run. The only way to get Image A run again in that situation is to invalidate Image B. If you write 0x0000 to the crc[0] area, the Image B gets invalidated and eventually the BIM will jump to Image A upon reset. Refer to the following code snippet. This feature will be available in BLE Stack 2.1 release.

  uint16_t crc[2] = { 0x0000, 0xFFFF };
      
  OADTarget_writeFlash(OAD_IMG_R_PAGE, OAD_IMG_R_OSET + OAD_IMG_CRC_OSET, (uint8_t *)crc, 2);
  OADTarget_systemReset();

Lina Lian said:

Q3: As below, even I remove GAP Bond Manager& SNV, stack code size is around 54004/1024 = 52.7KB, can’t set offset 0x00012000. For Page, at maximum, should have 14Page for Stack. Would you please kindly check whether it is right? Or something we’re missed.

If you don't need GAP Bond Manager and SNV, please follow the instructions below to reduce the stack size:

• Stack project
  • buildConfig.opt
    • Comment out –DGAP_BOND_MGR.
  • Linker option
    • In Config tab, set ICALL_STACK0_ADDR to 0x11000.
  • Compiler option
    • In Preprocessor tab, undefine OSAL_SNV=1 and define NO_OSAL_SNV.
• Image A project
  • Compiler option
    • In Preprocessor tab, set ICALL_STACK0_ADDR and OAD_IMG_B_AREA to 0x11000 and 11 respectively.
  • Build Actions option
    • At the end of Post-build command line, modify the range to 11000:1EFFF.
• Image B project
  • Compiler option
    • In Preprocessor tab, set ICALL_STACK0_ADDR and OAD_IMG_B_AREA to 0x11000 and 11 respectively.
  • Linker option
    • In Checksum tab, set End address to 0x10FFF.
  • Build Actions option
    • In Post-build command line, set the range to 6000:10FFF.

 Additionally, you can save 4 more kB by removing GATT Client feature from the stack. That option will be added to the BLE Stack 2.1 release.

- Cetri

Hi Lina,

To remove GATT client feature, please modify some functions in bleDispatch.c as follows and define GATT_NO_CLIENT in the compiler preprocessor option.

static uint8 processICallATT(uint8 cmdID, ICall_CmdMsg *msg_ptr, uint8 *pSendCS)
{
  uint16 connHandle = msg_ptr->attParamAndPtr.connHandle;
  attMsg_t *pMsg = msg_ptr->attParamAndPtr.pMsg;
  bStatus_t stat;

  switch(cmdID)
  {

    ...
      
#if !defined(GATT_NO_CLIENT)
    case ATT_HANDLE_VALUE_CFM:
      stat = ATT_HandleValueCfm(connHandle);
      break;
#endif // !GATT_NO_CLIENT
      
    default:
      /* 
       * For all other ATT commands, the corresponding GATT procedure should
       * be used instead.
       */
      stat = FAILURE;
      break;
  }

  return (stat);
}


static uint8 processICallGATT(uint8 cmdID, ICall_CmdMsg *msg_ptr,
                              uint8 *pSendCS)
{
#if !defined(GATT_NO_CLIENT)
  attMsg_t *pReq = msg_ptr->gattReq.pReq;
  uint8 taskId = msg_ptr->gattReq.taskId;
#endif // !GATT_NO_CLIENT
  uint16 connHandle = msg_ptr->gattReq.connHandle;
  bStatus_t stat;

  switch(cmdID)
  {
#if !defined(GATT_NO_CLIENT)
    case ATT_EXCHANGE_MTU_REQ: // GATT Exchange MTU
      stat = GATT_ExchangeMTU(connHandle, &pReq->exchangeMTUReq, taskId);
      break;

    ...

    case GATT_WRITE_CHAR_DESC: // GATT Write Characteristic Descriptor
      stat = GATT_WriteCharDesc(connHandle, &pReq->writeReq, taskId);
      break;
#endif // !GATT_NO_CLIENT

    ...

    default:
      stat = FAILURE;
      break;
  }

  return (stat);
}


static uint8 processDispGATTProfile(ICall_CmdMsg *msg_ptr, uint8 *pSendCS)
{
  bStatus_t stat = SUCCESS;
  uint16 cmdID = msg_ptr->hciExtCmd.cmdId;

  switch(cmdID)
  {
#if !defined(GATT_NO_CLIENT)
    case DISPATCH_GATT_INIT_CLIENT:
      // Initialize GATT Client
      stat = GATT_InitClient();
      break;

    case DISPATCH_GATT_REG_4_IND:
      // Register to receive incoming ATT Indications/Notifications
      GATT_RegisterForInd(msg_ptr->gattRegisterForInd.taskId);
      *pSendCS = FALSE;
      break;
#endif // !GATT_NO_CLIENT
      
    ...
    
    default:
      stat = FAILURE;
      break;
  }

  return (stat);
}

For 2.1 release schedule, please contact the local representative internally. There is an alpha program as well.

- Cetri