WICED Smart Bluetooth

[LeCa_2156671]

Dear BCM,

     maxsongkwangboont

     When we develop and debug one central to several peripherals.

     We have some information but confused us as below:

in : \WICED\WICED-Smart-SDK-2.1.1\WICED-Smart-SDK\Wiced-Smart\tier2\brcm\libraries\inc\thread_and_mem_mgmt.h

There is one function named cfa_mm_ConfigureMemoryPool()

The description above this function is:

////////////////////////////////////////////////////////////////////////////////////////////////////

/// Allows the application to configure the size and number of memory blocks in the general pool.

/// There are only 3 memory pools in the system, 0, 1 and 2. The following is the default

/// configuration of the pools:

/// pool[0].size = 32, pool[0].num = 28

/// pool[1].size = 64, pool[1].num = 6 + max_num_connections (= 4 by default)

/// pool[2].size = 264, pool[2].num = 3

/// If you want pool 2 to be 10 buffers with each being 272 bytes, then invoke it this way:

/// cfa_mm_ConfigureMemoryPool(CFA_MM_POOL_2, 272, 10);

/// Note that this can only be done only in the context of the APPLICATION_INIT function

/// (or the function that invokes bleapp_set_cfg). Calling this in any other context is undefined.

/// Making any of these pools larger than the defaults will reduce the amount of free RAM available

/// to the app. Use with caution.

/// If you are setting max number of connections using blecm_setmaxconnection(), make sure that this

/// function is invoked after setting max number of connections, or the behavior is undefined.

/// \param pool_id Pool ID of the pool being configured. Must be one of CFA_MM_POOL_X.

/// \param block_size Size of (in bytes) each buffer in this pool.

/// \param block_num Number of buffers to allocate in this pool.

/// \return TRUE on success, else failure.

////////////////////////////////////////////////////////////////////////////////////////////////////

/// If you are setting max number of connections using blecm_setmaxconnection(), make sure that this

/// function is invoked after setting max number of connections, or the behavior is undefined.

Question I: In our real test, with the current setting, BCM20736 could create as max as 4 connections at one time. if we want to create connections up to 8, how to configurate BCM20736 in APP layer?

Question II: We refer to the app of hello_client:

     In hello_client_create();

{

     ......

     //enable multi connection

     blecm_ConMuxInit(HELLO_CLIENT_MAX_SLAVES); // Here we define HELLO_CLIENT_MAX_SLAVES 7

    blecm_enableConMux();

    blecm_enablescatternet(); // What does this function do ??

     ...

}

the function of blecm_setmaxconnection() and cfa_mm_ConfigureMemoryPool() is not called in app of hello_client, where are the two functions called ??

Question III: How to call the configuration functions in APP layter to let BCM20736 support 8 connections at one time ?

Many thanks...

[BoonT_56]

This is a good thread on this topic

How many connect several Max about 20737s?

Look out for Arvind's proposed fix.

[LeCa_2156671]

We will try this configuration. thanks Boont

[LeCa_2156671]

Dear Boont,

    What about the function of cfa_mm_ConfigureMemoryPool()

    The description in this function mentioned that:

/// If you are setting max number of connections using blecm_setmaxconnection(), make sure that this

/// function is invoked after setting max number of connections, or the behavior is undefined.

     If I only call blecm_setmaxconnection() in APPLICATION_INIT() but not call the function of cfa_mm_ConfigureMemoryPool(), could I suceed to create the right connections ??

     Pls advise....

     Many thanks...

[Anonymous · Accepted solution]

lemancai

Max number of connections and cfa_mm_ConfigureMemoryPool() are loosely related, slight dependency of number of connections and number of pools because the connections uses a portion of the pools. If you are increasing maximum connections beyond the default, you should increase cfa_mm_configureMemoryPool accordingly.

-Kevin

[LeCa_2156671]

Dear Kevin,

     Yes, we now know how to use the function of cfa_mm_ConfigureMemoryPool(). Many thanks...