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Table of Contents
ChipKIT Pi
The ChipKITPi is a PIC32, MIPS32 based add-on board for the Raspberry Pi Model B.
It is designed to be used with the Multi-Platform Integrated Development Environment but this isn't a requirement.
RPi GPIO header
RPi-Connect
JP5
+---J4---+
NC 01 02 GPIO0/GPIO2
GPIO1/GPIO3 03 04 NC
GPIO4 05 06 GND
GPIO18 07 08 GPIO17
GND 09 10 GPIO21/GPIO27
GPIO23 11 12 GPIO22
GPIO24 13 14 3V3
GND 15 16 GPIO10
GPIO25 17 18 GPIO9
GPIO8 19 20 GPIO11
GPIO7 21 22 GND
+--------+
PIC32 GPIO headers
Arduino 3V3 compatible
JA1 PIC32MX250F128B
=== ===============
JA4 POWER PIC32MX250F128B NC NC
========= =============== G GND 8,19,27 GND
RESET 1 !MCLR 13 D13 SCK 25 RB14
3V3 13,28 3V3 12 D12 MISO 17 RB8
5V0 11 D11 MOSI PWM 3 RA1
GND 8,19,27 GND 10 D10 SS 16 RB7
GND 8,19,27 GND 9 D9 PWM 22 RB11 JP12
VIN 8 D8 21 RB10 JP13
JA2
===
JA3 ANALOG 7 NC
========== 6 NC
A0 2 RA0 JP15 5 NC
A1 26 RB15 JP11 4 NC
NC 3 D3 INT1 PWM 24 RB13
NC 2 D2 INT2 14 RB5
SDA 6 RB2 1 D1 TXD 11 RB4
SCL 7 RB3 0 D0 RXD 12 RA4
LED/Switch/JTAG
LED PIC32MX250F128B === =============== LED3 13,28 3V3 LED1 2 RA0 JP15 LED2 26 RB15 JP11 RX1 12 RA4 TX1 11 RB4 SW PIC32MX250F128B == =============== BOOTLOAD-EN 18 RB9 RESET 1 !MCLR JTAG PIC32MX250128B JTAG PIC32MX250128B ==== ============== ==== ============== 6 8,19,27 GND 5 14 RB5 JP10 4 18 RB9 JP6 3 17 RB8 JP8 2 13,28 3V3 1 16 RB7 JP14
Orientation is ICSP port to the left and JTAG port to the right.
ICSP
PIC32MX250F128B RASPBERRY Pi =============== ============ 1 !MCLR --330R-- GPIO4 4 PGD1 -------- GPIO15 Rx 5 PGC1 -------- GPIO14 Tx
ICSP is wired internally to the chipKIT Pi and no other wiring is necessary.
Boot loader & LED demo
The boot loader firmware can be updated or programmed into a blank chip using Pickle Microchip PIC ICSP.
The process is documented on the chipkit32 boot loader project page which also contains information about an LED blink demo.
