Firefly v2.0

 

Papilio Junior family of boards is now Firefly. While the idea behind the Papilo platform REDe remains the same, this name follows the new naming convention for all Papilio platform boards. Firefly is a smaller, cheaper version of configurable boards but using microcontrollers instead of a FPGA.

 

Papilio Junior v2.0 boards (both bare PCBs and assembled boards) are available at the India store. For availability in the Worldwide store please contact support@gadgetfactory.net for more details.

 Buy this board at India store

Buy prototype at World store

 

Overview

The Papilio Junior project is an effort to create a very low cost Papilio board that uses a traditional microcontroller and includes a 16-bit Wing slot and USB, to support the lower end of the Papilio continuum. This second version of Papilio Junior uses PIC18F44J50 and provides a 16-bit Wing slot (or two 8-bit Wing slots), 4 analog inputs and USB interface. It also integrates a LED/Button utility Wing, freeing a 8-bit slot used for this essential interface.

This board can use from 3 different microcontrollers (in TQFP44 package) in this family that offer varying sizes of flash program memory:

Device	Program memory
PIC18F44J50	16k
PIC18F45J50	32k
PIC18F45J50	64k

 

A separate Arduino shield adapter is also designed that will allow this board to use almost all Arduino shields and sketches. No external analog reference is provided for the Arduino shield adapter. A separate compatibility library for PIC18F46J50 familiy controllers is also being tested.

The Arduino shield adapter is placed such that the jumpers, switches and LEDs on the Papilio Junior v2.0 are all visible and accessible even with a shields installed.

All Papilio Junior v2.0 boards will be preprogrammed with Microchip bootloader making the PICKit2 unnecessary for programming. The software support libraries will have template files for writing applications to go with the bootloader.

 

Wing Pin assignments 

Wing Pin	MCU Remappable peripheral pin	Function
1	RP1	Any of these pins can be assigned any of the following functions: External interrupts: INT1, INT2, INT3 Timer external clock input: T0CKI, T3CKI Input capture: CCP1, CCP2 Timer gate input: T1G, T3G EUSART2: RX2, DT2, TX2, CK2 SPI2: SDI2, SDO2, SCK2IN, SCK2OUT, SS2, SSDMA (Supports both master and slave modes) PWM: FLT0, P1A, P1B, P1C, P1D, P2A, P2B, P2C, P2D Comparator: C1OUT, C2OUT Wakeup: ULP1 GPIO: Direction select and drive level configuration Some pins can also function as Analog inputs.
2	RP0
3	RP10
4	RP9
5	RP8
6	RP7
7	RP6
8	RP5
9	RP4
10	RP3
11	RP24
12	RP23
13	RP22
14	RP21
15	RP18
16	RP17

 

Analog Input Pin assignments 

Header Pin	MCU peripheral pin	Function
1	-	GND
2	AN2	AIN0
3	AN3	AIN1
4	-	GND
5	AN4	AIN2
6	AN5	AIN3

 

LED/Button Pin assignments

Wing Pin	MCU peripheral pin
LED1	RC2
LED2	RD0
LED3	RD1
LED4	RD2
SW1	RC1
SW2	RC0
SW3	RE2
SW4	RE1

 

Program/Debug header PGMHEADER pinout

Pin	Function
1	Vpp/nMCLR
2	VDD (target)
3	VSS (ground)
4	PGD (Program data)
5	PGCProgram clock)
6	Not used

 

Features

The board has one 16-bit slots mirrored on a identical slot to facilitate use of larger Wings. The 16-bit Wing slots are called A and B, which can be used as two 8-bit slots called AH and AL, or BH or BL respectively.

Note: 'A' and 'B' are NOT two different Wing slots, only one can be used at a time.

The microcontroller pins are mapped to the Wing slots as follows: 

16 bit slots		8-bit slots		RP pin	MCU Port pin	Analog Capability
A	B	AH/AL	BH/BL
A0	B15	AL0	BH7	RP17	RC6	No
A1	B14	AL1	BH6	RP18	RC7	No
A2	B13	AL2	BH5	RP21	RD4	No
A3	B12	AL3	BH4	RP22	RD5	No
A4	B11	AL4	BH3	RP23	RD6	No
A5	B10	AL5	BH2	RP24	RD7	No
A6	B9	AL6	BH1	RP3	RB0	Input
A7	B8	AL7	BH0	RP4	RB1	Input
A8	B7	AH0	BL7	RP5	RB2	Input
A9	B6	AH1	BL6	RP6	RB3	Input
A10	B5	AH2	BL5	RP7	RB4	No
A11	B4	AH3	BL4	RP8	RB5	No
A12	B3	AH4	BL3	RP9	RB6	No
A13	B2	AH5	BL2	RP10	RB7	No
A14	B1	AH6	BL1	RP0	RA0	Input
A15	B0	AH7	BL0	RP1	RA1	Input

The orientation of the Wing slots is depicated on the board silkscreen.

 

Rendered image of the final PCB (70x50 mm)

 

 

Assembled Prototype

 

Resources

Development Forum Thread.

SVN access to development files.

How to access files in SVN.

Follow the development of Papilio Junior on Twitter

Introduction, Tutorials and Demo projects using the Firefly v2

Current Status

The Papilio Junior v2.0 PCB's have been built, tested and verified for functionality. These boards are currently available in India store. They will be available in world store shortly.

• Board Design - Complete
• Board Manufactured - Complete
• Board Assembled - Complete
• Preliminary Testing - Complete
• Board completely Verified - Complete
• Board available in Store - Complete (India store, World store)

 

Time	Activity Type	By
2010-Dec-20
11:36:49	Commit: PC application file update. COM port options expanded to upto COM16	Girish Pundlik
10:51:43	Commit: Adding USB CDC demo that uses the onboard LED/Button interface with commands over the virtual COM port	Girish Pundlik
2010-Dec-18
04:36:47	Commit: Minor correction to the code, thanks to Wilfried Fedtke.	Girish Pundlik
2010-Sep-18
23:25:45	Commit: Demo application updates	Girish Pundlik
2010-Sep-10
00:09:16	Commit: Maintenance	Girish Pundlik
2010-Sep-05
14:14:28	Commit: Syncing the demo source code with the tutorials	Girish Pundlik
2010-Sep-03
23:38:12	Commit: Fixed bootloaded.h file in Basic flash demo	Girish Pundlik
15:31:54	Commit: Microchip HID bootloader application	Girish Pundlik
2010-Aug-29
09:22:05	Commit: Removed some irrelevant comments that might be confusing	Girish Pundlik
08:58:00	Commit: PIC Cocoon 2 layout with mounting holes and updated silkscreen	Girish Pundlik
02:42:12	Commit: Some demo applications for PIC Cocoon 2.0 board	Girish Pundlik
2010-Aug-09
12:56:11	Commit: Microchip HID Bootloader updated for use with PIC Cocoon 2	Girish Pundlik
12:49:03	Commit: Final production design files	Girish Pundlik
2010-Jul-02
22:26:26	Commit: Latest design files.	Girish Pundlik