Walkie-Talkie via Bluetooth By : Kopitman Reem Stolberg Dmitri Instructor: Chen Koren The final presentation

Project Goals Implementation of wireless communication via Bluetooth Voice wireless transmission

General Walkie AWalkie B

Abstract  System contains two identical and independent units  Each unit :  provides duplex wireless connection  can function as both master and slave  creates and manages digital data  implements USB and BT protocols

Unit structure Asgard Teledim

Project milestones Hardware: Asgard (BT stack) architecture Voice using codec (TD) External memory (TD) Software: Bluetooth features and protocol (Asgard) Operating System (Asgard assembly) USB protocol (Asgard) System assurance and validation

Hardware aspects - logical Data propagation –Audio –A/D and PCM –Shift register –BT controller –USB host –Bluetooth Application Kit

Hardware aspects - logical Timing control –Clock generator –Divider –Synchronizer

Hardware aspects - teledim

Teledim - Codec

Teledim - Clock

Teledim - Memory

Asgard - Synchronizer

Asgard – Shift register

Asgard – BT controller interface Asgard User Interface 40 pin Bufdata[39..0]

Asgard – BT controller interface 16 pin- Address Address[15..0] 16 pin- I/O Bufdata[15..0] 8 pin- Data Data[7..0] Data from internal c_mem Data to external eeprom Address from Registers Data from external eeprom Address from CPU

Software – General BT features USB Interface Asgard OS Debugging software

Software – Bluetooth Various topologies of connection Software control

Software – Bluetooth Bluetooth layers OS organization

Software – OS algorithm Start USB Initialization Bluetooth Initialization Master/ Slave? Create ACL Connection MasterSlave Send and Receive Data Packets Disconnect comm./reques t Disconnect Yes No Is there connection request? NoYes

Software – Debugging USB analyzer VBT receive ( RS232 ) Bluepearl (BT Stack simulation) PC_BT ( BT Stack )

Software – Debugging Asgard Usb cable Usb cable דגימות מפורט טורי של ASGARD

Alternative system configuration ACL SCO Asgard Telerem No Real time ACL based connection

The end

Asgard Teledim FPGA Codec Driver PAR2SER PCM Converter Audio Amplifier A/D Sync. System Shift Register DividerCLK USB Host USB Host Code Memory BlueTooth Application Kit Processor Interface