Wireless PC-Peripherals Wireless PC-Peripherals

CommunicationCommunication

viavia

Blue ToothBlue Tooth(D0130 project)(D0130 project)

Zaher Andrawis Zaher Andrawis

Ashraf khouryAshraf khoury

Intermediate ReportIntermediate ReportSupervisor

Hain BrodnySummer 2001

Project PurposeProject Purpose

Wireless communication between PC Wireless communication between PC and its peripheralsand its peripherals

BlueTooth

SpecificationsSpecifications• Communication between PC and a Communication between PC and a

peripheral device through the peripheral device through the McBSP serial port of the DSPMcBSP serial port of the DSP

• Translating the PS/2 protocol from Translating the PS/2 protocol from the PC or Device side to the the PC or Device side to the McBSP. The DSP transfers McBSP. The DSP transfers transparently the received bytestransparently the received bytes

Implementation:Implementation:

FPGA board with PS/2 connectors FPGA board with PS/2 connectors and a connection to DSPand a connection to DSP

DSP program to mirror the dataDSP program to mirror the data

Specifications Specifications (cont)(cont)

• Board requirements:Board requirements: FPGA FLEX10K100 BoardFPGA FLEX10K100 Board EPC2 configuration chip and Jtag InterfaceEPC2 configuration chip and Jtag Interface 4 PS/2 Connectors 4 PS/2 Connectors An interface to 5402 DSPAn interface to 5402 DSP Debugging pinsDebugging pins Jumpers to enable “McBSP” In/OutJumpers to enable “McBSP” In/Out “ “contact” to work-around the DSP!contact” to work-around the DSP! Power SupplyPower Supply

• We aim to check the system “due We aim to check the system “due diligence”, thus voltage and power diligence”, thus voltage and power adjustment of the final “tape-out” less adjustment of the final “tape-out” less concerns usconcerns us

Specifications Specifications (cont)(cont)• FPGA implementation should include 10KHZ FPGA implementation should include 10KHZ

PS/2 protocol, and McBSP protocol in the PS/2 protocol, and McBSP protocol in the DSP frquency we’ll configure in the future.DSP frquency we’ll configure in the future.

• Testing will be done by defining the Testing will be done by defining the appropriate test-benches in Renoir, And by appropriate test-benches in Renoir, And by DSP software…DSP software…

• Equipment requirements:Equipment requirements: PC (with LPT + 2 serial ports!)PC (with LPT + 2 serial ports!) PS/2 device (keyboard + mouse)PS/2 device (keyboard + mouse) DSK (of DSP 5402)DSK (of DSP 5402) ByteBlaster parallel portByteBlaster parallel port Digital “scope” for debuggingDigital “scope” for debugging JumpersJumpers Vcc/GND supplierVcc/GND supplier (Vcc=5 v !) (Vcc=5 v !)

BackgroundBackground• Input/Output:Input/Output:

PS/2 : 10KHZ – PS/2 : 10KHZ – Start/Data(8)/Stop/Parity Start/Data(8)/Stop/Parity bits…bits…

(http://panda.cs.ndsu.nodak.edu/~achapwes/PICmicro/PS2/ps2.htm)

PC and Device cannot collide in PC and Device cannot collide in transmitting/receiving… BUT : Using the transmitting/receiving… BUT : Using the wireless broadcast might cause such a wireless broadcast might cause such a collision collision The FPGA implementation The FPGA implementation handles that!handles that!

McBSPMcBSP of DSP: Typically 12.5 MHz of DSP: Typically 12.5 MHzThe exact frequency is determined by the clock The exact frequency is determined by the clock

generating method, configured using the McBSP generating method, configured using the McBSP control registers.control registers.

Functional BlocksFunctional Blocks

PS/2 lines

McBSP lines

PS/2 Interface McBSP

InterfaceController

DeviceSide

DeviceSide=1

PCDeviceSide=0 Mouse

DSPDeviceSide=1 DeviceSide=0 Keyboard

Hardware – The whole Hardware – The whole SystemSystem

Hardware – FPGA BoardHardware – FPGA Board

FPGA Board

PS/2 connector

PS/2 connector

PS/2 connector

PS/2 connector

FPGAfor

PCfor

Devices

Jumpers for McBSP “contact”DSP Interface

Pin-to-Pin Pin-to-Pin Proposal MapProposal Map

FPGA of ALTERAFPGA of ALTERA

• FLEX10K100:FLEX10K100: Supports Peripheral connectionSupports Peripheral connection10 MHz clock10 MHz clockRelevant Configuration Device is Relevant Configuration Device is EPC2, or EPC2, or

2 EPC1s ! 2 EPC1s ! For the moment we’ve designed For the moment we’ve designed the system for one EPC2the system for one EPC2..

Dev’ Software: Renoir 2000 Dev’ Software: Renoir 2000 ModelSem+Leonardo, MaxPlusIIModelSem+Leonardo, MaxPlusII

Translation Blocks Translation Blocks in a nutshellin a nutshell

Compiles Hierarchaly with 0 Errors!

FRFX

CLKR

CLKX

DRDX

Main ControllerMain Controller• 2 FSMs for controlling PS/2 and 2 FSMs for controlling PS/2 and

McBSP units, and samples their McBSP units, and samples their statusstatus

• Handles Collision (possible !!)Handles Collision (possible !!)

Interface – Example: PS/2Interface – Example: PS/2

Reminder

Interface – Example: PS/2 Interface – Example: PS/2 (cont)(cont)

Reminder

SoftwareSoftware• In part A we are requested to In part A we are requested to

“work-around” the BT:“work-around” the BT: Translate PS/2 to McBSP and vise Translate PS/2 to McBSP and vise

versaversa DSP mirros the input to the outputDSP mirros the input to the output::

• We assume the McBSP API is We assume the McBSP API is ready…ready…

• While(TRUE){While(TRUE){

a = getchar(A1)a = getchar(A1)

putchar(A2)putchar(A2)

}}

Software / TestingSoftware / Testing• The above program tests the PS/2-The above program tests the PS/2-

to-McBSP-McBSP-to-PS/2 !to-McBSP-McBSP-to-PS/2 !

• Alternative testing for the McBSP only Alternative testing for the McBSP only is :is :

OnceInAWhile(){OnceInAWhile(){

putchar(a,A2);putchar(a,A2);

a’=getchar(A1);a’=getchar(A1);

““Shout()” if a’!=aShout()” if a’!=a

}}

ScheduleSchedule• 30.830.8 (this week)– Finish pin-to- pin (this week)– Finish pin-to- pin

scheme and send board for start-up…scheme and send board for start-up…

• 6.9 6.9 (next week)– Finish test benches, (next week)– Finish test benches, with successfully working Renoir moduleswith successfully working Renoir modules

• 13.9 13.9 –Controlling/understanding DSP –Controlling/understanding DSP software and building the required tests.software and building the required tests.

• 13.10 13.10 – Testing the ready (hopefully!) – Testing the ready (hopefully!) FPGA board:FPGA board:

We should type a char in the keyboard, or move the We should type a char in the keyboard, or move the mouse, and see the effect on the connected PC, mouse, and see the effect on the connected PC, when data goes through our FPGA + DSP !when data goes through our FPGA + DSP !