SYS/BIOS Issue regarding Buffer Manager Module

manjunath tapasi

Other Parts Discussed in Thread: SYSBIOS

Hi All,

I am trying to convert CCS3.3(DSP/BIOS) project into a CCS5.2(SYS/BIOS) project.

In DSP/BIOS program(CCS 3.3), there is BUFFER MANAGER MODULE, and under that EVENT BUFFER is configured STATICALLY. Now i need to configure the BUFFER MANAGER MODULE in CCS 5.2 statically,but there is no such module available in CCS 5.2. how can i find it?

The following statement is used in the DSP/BIOS program :

BUF_free(&MYBuffer, DataPkt);

But if i use the same for CCS5.2 i get the following errors

Error given was : BUF_free is undefined,MYBuffer is undefined.

please help me to configure this BUFFER MANAGER satatically in CCS 5.2.

over 12 years ago

0 ToddMullanix over 12 years ago

TI__Guru* 96960 points

With SYS/BIOS, the Memory module is used to allocate/free memory. You can use different types of "heap" implementations under Memory. For example ti.sysbios.heaps.HeapMem (equivalent to MEM is DSP/BIOS), ti.sysbios.heaps.HeapBuf (equivalent to BUF is DSP/BIOS), and ti.sysbios.heaps.HeapMultiBuf (basically equivalent to multiple BUF instances in DSP/BIOS).

Take a look at the memory example in SYS/BIOS. Note: you need to cast the HeapBuf_Handle to the generic IHeap_Handle to use in the Memory calls. Here is the code from the memory example that does that

IHeap_Handle heap = HeapBuf_Handle_upCast(task0Heap);

You can also look at the Bios_Legacy_App_Note.pdf in the docs directory of SYS/BIOS for more details (specifically section 5.4 "Dynamic Memory Allocation").

Todd