R e a d m e . t x t 

ADSP-BF537 EZ-KIT BTC Audio demo

Date Modified:		11/1/07
			1/31/06
			11/16/05
					
Test history:
	- Last tested 1 November 07
	- VisualDSP 5.0 Update 1
	- ADSP-BF537 EZ-Kit Lite Rev 2.1
_____________________________________________________________________

C o n t e n t s 

I.    Overview
II.   Required Hardware
III.  Operation Description
IV.   Deliverables
V.    Board settings


I. Overview
The BTC Audio demo demonstrates transfering data to/from the Blackfin BF537 Ez-Kit 
over Background Telemetry Channels.  A DSP program samples audio data from the line-in 
connector on the Ez-Kit.  The audio samples are streamed up to the host via BTC.  The audio 
data is then displayed in a plot window.  The audio volume can be altered by writing
values to the volume BTC channel.

II. Required Hardware:
1) Blackfin BF537 Ez-Kit.
2) HP-PCI ICE, HP-USB ICE, or USB cable (for onboard USB debug agent).

III.  Operation Description

Setup:
1) Make sure that the following switches are set-up as:
   SW7-> ON,ON,ON,ON,ON,ON,ON,ON
2) Connect an audio signal to the Line input connector on the Ez-kit.
3) Connect speakers to the Line output connector on the Ez-kit.

Usage:
 1) Start the IDDE.  
 2) Select a HP-PCI, HP-USB or BF537 Ez-kit session.
 3) Build and load the DSP program.
 4) Open the BTC Memory window (View->Debug Windows->BTC Memory)
 5) Restore the plots (View->Debug Windows->Plot->Restore) left.vps and right.vps.
 6) Right-click on the plots and select "Auto Refresh Settings..."
    Select: Use BTC.
    Select: Sample a single value over time.
    Set refresh rate to 150.
 7) Run the DSP Program.
 8) Right-click on the plots and select "Auto Refresh"
 9) Adjust the volume by selecting "Left Volume" in the BTC Memory Window.
    Change format to Hex32.
    Type in a value between 0->9 (0=loud) 
	
IV.   Deliverables
+---Blackfin
    +---Examples
    ¦   +---ADSP-BF537 EZ-KIT Lite
    ¦       +---Background_Telemetry 
    |			+---AudioDemo
    |				BTC_audio_demo.dpj
    |				initialization.asm
    |				interrupts.asm
    |				main.c
    |				Process_data.c
    |				startup.asm
    |				startup.h
    |				Talkthrough.h
    |				left.vps
    |				right.vps
    +---lib
    	libbtc532.dlb
    	
V. Board settings

	Switch settings:
	SW4: all ON
	SW3: all OFF
	SW2: all ON
	SW8: ON,ON,OFF,OFF,OFF,OFF
	SW1: all OFF
	SW7: all ON
	SW6: all ON
	SW5: all ON

	Jumper settings:
	JP9: installed
	JP3: 1 and 2 installed
	JP5: installed
	JP12: not installed
	JP6: not installed
	JP8: not installed