Equipment/Bus Pirate

Bus pirate
Model	Unknown
Sub-category	Test equipment
Status	Good working order
Last updated	8 August 2022 12:12:30
Consumables	Unknown
Accessories	Unknown
Training link	Unknown
Owner	Unknown
Origin	Unknown
Location	Ground floor, electronics bench

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

Information about the schematics to use with any of the supported protocols can be found here [1]

How to get a shell anything UART

Follow this step to get a shell using the bus pirate to you UART devices. 1. First find the UART baud rate for the device. You can generally find this information from the constructors manual or using an oscilloscope.Note it on a piece of paper. 2. Find the connecting plug for it. Need some magic here. It mostly trying to find the GND first using tester and trying to find the voltage pin and data pin. 3. Connect you bus pirate to your device. 4. Find the new device using 'ls /dev/tty*' 5. Start a shell. Either trough minicom or screen. 6. m ( for mode) 7. 3 (for selecting the UART) 8. select your baud rate ( most common baud rate are 9600 or 115200) 9. default work in most of the case to get your shell on any devices 8 10. select stop bits is 1 most of the case 11. enjoy your shell.

Real life example

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

Projects/HM55B