Bus Pirate

Bus Pirate
Universal bus interface (1-Wire, I2C, SPI, JTAG)


Interfacing a new microchip can be a hassle. Breadboarding a circuit, writing code, hauling out the programmer, or maybe even prototyping a PCB. We never seem to get it right on the first try.
The ‘Bus Pirate’ is a universal bus interface that talks to most chips from a PC serial terminal, eliminating a ton of early prototyping effort when working with new or unknown chips. Many serial protocols are supported at 0-5.5volts, more can be added.

• 1-Wire
• I2C
• SPI
• JTAG
• Asynchronous serial
• MIDI
• PC keyboard
• HD44780 LCD
• 2- and 3-wire libraries with bitwise pin control
• Scriptable binary bitbang, 1-Wire, I2C, SPI, and UART modes

Features

• 0-6volt measurement probe
• 1Hz-40MHz frequency measurement
• 1kHz - 4MHz pulse-width modulator, frequency generator
• On-board multi-voltage pull-up resistors
• On-board 3.3volt and 5volt power supplies with software reset
• Macros for common operations
• Bus traffic sniffers (SPI, I2C)
• A bootloader for easy firmware updates
• Transparent USB->serial mode
• 10Hz-1MHz SUMP compatible low-speed logic analyzer
• AVR STK500 v2 programmer clone
• Supported in AVRDude programmer
• Scriptable from Perl, Python, etc.

Contents

• Bus Pirate board

Documentation and software

• The Bus Pirate webpage
• On-line Bus Pirate documentation and software download