Equipment/Bus Pirate

Bus Pirate

Description

The Bus Pirate is a low-level interface to:

• 1-Wire
• UART
• I2C
• SPI
• JTAG
• raw 2-wire
• raw 3-wire
• PC keyboard
• HD44780 LCDs
• MIDI

It includes an ADC and can bit bash these protocols at the wire level. It can also be put into UART bridge mode, acting as a simple serial port.

Reference

• Bus Pirate
• Bus Pirate manual
• Latest firmware & documentation

Our connector

brown - GND		
red - +3.3			 
orange - +5	
yellow - ADC		 
green - VPU		
blue - AUX
purple - CLK		
grey - MOSI		
white - CS			
black - MISO

NB This order depends on attachment as connector is symmetrical and may be inverted.

Sparkfun Connectors

I have noticed that the sparkfun connector and buspirate uses the following mappings

black – gnd
white – 3.3V
grey – 5V
purple – ADC
blue – VExtern
green – aux1
yellow – clk
orange – MOSI
red – CS
brown – MISO

AVRDude bus pirate mappings

+ * BusPirate       AVR Chip 
+ * ---------       --------
+ *       GND  <->  GND
+ *       +5V  <->  Vcc
+ *        CS  <->  RESET
+ *      MOSI  <->  MOSI
+ *      MISO  <->  MISO
+ *   SCL/CLK  <->  SCK

Real life example

As it happened at the LHS, the bus pirate interacting with a Hitachi HM55B compass module:

Projects/HM55B