CC2540 Power Management

Hello....

Yeah I am using my own custom board which has CC2540 IC. I am trying to do the advertising operation from my custom board i.e I need to display my device's MAC ID to others for a certain amount of time in active mode and then go to PM2  for a certain period and then come back again to Active mode and display the MAC Id. 

So If I need to do this, which program do I need to refer and what are all the modifications to be done??

And I am not using any LCD display in my custom board...

I will just advertise my device's MAC ID to other devices such as iphone, Windows 8 supported Bluetooth systems, etc.

This is what I basically need to do.....

Hello,

Frist, I would start with the porting of the HAL layer to your platform. In our BLE Stack release their is no porting guide, so I have attached the one we provide with our Z-Stack release. This is just a guideline, but the same general idea applies.

If you have not already done this, I recommend to ensure that the lower layer works properly first. Is this working correctly on your custom platform?

8802.Z-Stack HAL Porting Guide.pdf

Enjoy,
LPRF Rocks the World

Hello......

Thanks for the reply....

How to port the HAL layer to my board and how to ensure that the lower layer works properly??

Please guide me.....

Thanks.

Hi Gautham,

You can use the following to read the MAC address:

        uint8 ownAddress[B_ADDR_LEN];

        GAPRole_GetParameter(GAPROLE_BD_ADDR, ownAddress);

Then simply put the result in an advertisment packet:

  /**

   * @brief       Setup or change advertising and scan response data.

   *

   *    NOTE:  if the return status from this function is SUCCESS,

   *           the task isn't complete until the GAP_ADV_DATA_UPDATE_DONE_EVENT

   *           is sent to the calling application task.

   *

   * @param       taskID - task ID of the app requesting the change

   * @param       adType - TRUE - advertisement data, FALSE  - scan response data

   * @param       dataLen - Octet length of advertData

   * @param       pAdvertData - advertising or scan response data

   *

   * @return      SUCCESS: data accepted,<BR>

   *              bleIncorrectMode: invalid profile role,<BR>

   */

  extern bStatus_t GAP_UpdateAdvertisingData( uint8 taskID, uint8 adType,

                                      uint8 dataLen, uint8 *pAdvertData );

pAdvertData is where you put the MAC address (advData = 02:01:05:07:FF:OW:NA:DD:RE:SS:XX). The format of the Advertisment data is found in the Core spec Vol 3, Part C, Section 11 and 18. Byte 5 must be 0xFF to inform that you have vendor specific data you want to broadcast.

/Fredrik

Hello Fredrik....

Thanks....

First I need to do the advertising operation i.e I need to display my MAC Id to other devices..... How can I do that ?? I am not using any LCD display devices.......

And where can I find core spec vol 3, part C?? Can you post the link please??

Also how can I put the result in an advertisement packet??

Please guide me...

Thanks.......

In my previous post I showed you both how you could get the MAC address of your device, and also how you could broadcast it in an advertisment packet. A good starting point would be to use the SimpleBLEPeripheral code and modify it according to your needs.

The Bluetooth Core Spec is found here: https://www.bluetooth.org/Technical/Specifications/adopted.htm

/Fredrik

Hello...

Thanks...

Will it be sufficient if I use the BLE broadcaster code alone to advertise my MAC Id??  

In that code, will it automatically broadcast my MAC Id or do I need to use the advertisement packet to send??

Regards....

Gautham.

Hi Gautham,

The MAC/IEEE address is part of the broadcast/advertisement packet. See below Sniffer capture of a broadcasted packed. The AdvA is the MAC/IEEE address.

Best Regards 

May I know how the MAC address present in the advertisement packet is 6 byte i.e 48 bit??

As per your image of the advertisement packet in the previous post, the MAC address is 0x90D7EBB19299.

How this is a 6 byte addr?? 

0x90 = 0b10010000 (1 byte)

0xD7 = 0b11010111 (1 byte)

0xEB = 0b11101011 (1 byte)

0xB1 = 0b10110001 (1 byte)

0x92 = 0b10010010 (1 byte)

0x99 = 0b10011001 (1 byte)

Total = 6 byte.

/Fredrik

Thanks a lot Fredrik...

Now, I am doing only advertising... So I am following only Simple Ble Broadcaster code....

In that, I am planning to advertise my mac id for 2 sec alone and then make the device idle for 30 seconds and then again advertise for 2 sec..........

So for this to happen, I am making use of a timer to trigger an osal event i.e Osal_Start_timerEx(simplebleperipheral_task id, event, evnt period).

Then I am toggling the timer ie ON and OFF and then running this continuously by using performPeriodicTask() function....

And, since I am making my own custom board, I dont have the keys for starting the advertisements..

The advertising should start once I power on the device... So will my logic work for Simple Ble Broadcaster with the elimination of functions such as Handlekey() function   or I should use only simple ble Peripheral for my requirement??