Dear all,

I'm new in DSP. I am working on a TMS320F2812 DSP (on a Spectum
Digital eZdsp board).
I have to write an application that do the following tasks (or
parallel execution paths):
 1 - read data from external ADCs (then apply on this data an
algorithm) connected to GPIO ports
 2 - send periodically elaborated data on SCI UART interface
 3 - read other data from on-chip ADC (like temperature), with a very
lower frequency respect to point 1.

The first thing I would like to define is the global architecture of
my application. Reading TI documentation I know there are mainly two
type of application: non-DSP/BIOS and DSP/BIOS. I think my application
should  be a DSP/BIOS one because this enable concurrent thread
execution and enable different type of thread (interrupt based,
periodic etc..).  For example the task 2 and task 3 could be periodic
thread (PRD). Do you thing this is the right solution or I will have
to prefer non-DSP/BIOS application for some reason?

Then, I have to use the GPIO and SCI ports. I have read some
documentation and looked inside source code example ("C281x C/C++
Header Files and Peripheral Examples" and "Interfacing the ADS8364 to
the TMS320F2812"). My question is about the memory and section
management ni a DSP/BIOS application. When I create a new project I
create also a new DSP/BIOS configuration that create also a new .cmd
file. When I import the "Header File" of the peripheral example I have
also to import other .cmd file (like DSP281x_Headers_BIOS.cmd and
F2812_EzDSP_RAM_lnk.cmd). Compiling the code I have many errors due to
multiple definition of some memoty section (between the .cmd file
created automatically by DSP/BIOS configuration tool and the
F2812_EzDSP_RAM_lnk.cmd). I tried to remove then the 
F2812_EzDSP_RAM_lnk.cmd bu a warning report that the "ramfuncs" is non
defined. "ramfuncs is defined into F2812_EzDSP_RAM_lnk.cmd as:

 ramfuncs         : > H0SARAM       PAGE = 0 )

So, I have re-imported the F2812_EzDSP_RAM_lnk.cmd file into the
project but cleaning all the multiple memory section definition (as
H0SARAM that is already defined into the .cmd file created
automatically by DSP/BIOS configuration tool ). Is this operation
right or am I wronging something?Is there a TI documentation that
explain clearly the memory usage (page and section definition) fot
TMS320F2812 DSP?

Thank you in advance,
Enrico

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