tnc1101

Semi-virtual TNC using MSP430 + CC1101 RF module to send data blocks over the air and a host client application to handle AX.25/KISS protocol

#Introduction

It assumes the following architecture is in place:

The application has two main components

• The MCU (MSP430F5529 Launchpad board) interface with the CC1101 RF module in msp430 folder. It comprises the follwing functions:
  • Initialize the CC1101 chip with parameters specified by the host client application
  • Handle the CC1101 Rx and Tx 64 bytes FIFOs to handle data blocks up to 255 bytes called "radio blocks"
• The client application on the host that communicate with the MCU over USB. Located in tnc1101 folder it does the following:
  • Instructs the MCU to initialize the CC1101 module with the desired parameters
  • Interface with the TNC end of the virtual serial link cable. See "AX.25/KISS operation" chapter about details on this virtual "cable".
  • Handle KISS blocks and split them over radio blocks of up to 255 bytes
  • Move radio blocks back and forth to the MCU via USB
  • Provides diagnostics

Additional folders:

• The USB stack and interface to other functionnalities of the MSP430F5529 Launchpad board (SPI, ...) from TI are located in MSP430_USB_API folder.
• The interface with the CC1101 module is located in MSP430_cc1101
• Common files interfacing host and MCU software are located in the common folder
• The scripts directory contains convenience shell scripts to set-up and bring down AX25/KISS or SLIP interfaces