Pin Definitions

Device	Name	Arduino Pin	AtMega2560 Pin	AtMega 2560 Port	Description
AtMega2560	MOSI	51	21	PB2	SPI communication line
AtMega2560	MISO	50	22	PB3	SPI commuication line
AtMega2560	RESET		30	RESET	SPI Reset
AtMega2560	SCK	52	20	PB1	SPI Serial Clock
Level Shifter	LVL_SHIFT_EN	2	6	PE4	Controls OE Pin
Screen	TFT_PWR_EN	4	1	PG5	Controls high side mosfet controlling LED voltage. Set low to enable power
Screen	TFT_RESET	29	71	PA7	LCD Reset Pin
Screen	TFT_DC	28	72	PA6	LCD DC Pin
Screen	TFT_CS	27	73	PA5	LCD Chip Select Pin
RFM95	RFM_PWR_EN	5	5	PE3	Controls high side mosfet controlling RFM95 voltage. Set low to enable power
RFM95	RFM_INT	3	7	PE5	RFM95 interrupt pin
RFM95	RFM_CS	10	23	PB4	RFM95 chip select pin
RFM95	RFM_RESET	49	35	PL0	RFM95 reset pin
DS1307	SDA	20	44	PD1	Real Time Clock I2C Data line
DS1307	SCL	21	43	PD0	Real Time Clock I2C Clock line
Trackpad	TP_RESET	25	75	PA3	Trackpad Reset Line
Trackpad	TP_SHUTDOWN	24	76	PA2	Trackpad Shutdown Line
Trackpad	TP_CS	47	37	PL2	Trackpad Chip Select Pin
Trackpad	TP_BUTTON	23	77	PA1	Input pin detecting mechanical press of trackpad button
Trackpad	TP_MOTION	48	36	PL1	Trackpad Motion Pin
SD Card	SD_CS	22	78	PA0	microSD card Chip Select Pin
SD Card	DET_CARD	39	70	PG2	Input pin pulls high when card is inserted
Keypad	ROW_1	30	60	PC7	Keypad Row Pin
Keypad	ROW_2	31	59	PC6	Keypad Row Pin
Keypad	ROW_3	32	58	PC5	Keypad Row Pin
Keypad	ROW_4	33	57	PC4	Keypad Row Pin
Keypad	ROW_5	34	56	PC3	Keypad Row Pin
Keypad	COL_1	35	55	PC2	Keypad Column Pin
Keypad	COL_2	36	54	PC1	Keypad Column Pin
Keypad	COL_3	37	53	PC0	Keypad Column Pin
Keypad	COL_4	40	52	PG1	Keypad Column Pin
Keypad	COL_5	41	51	PG0	Keypad Column Pin
Keypad	COL_6	38	50	PD7	Keypad Column Pin
Keypad	COL_7	42	42	PL7	Keypad Column Pin
Keypad	COL_8	44	40	PL5	Keypad Column Pin
Keypad	COL_9	45	39	PL4	Keypad Column Pin
Keypad	COL_10	46	38	PL3	Keypad Column Pin
Battery	BAT_PIN	A7	90	PF7	Analog Voltage Read on VBAT
Test Point	TP1		3	PE1	TX
Test Point	TP2		2	PE0	RX
Test Point	TP3
Test Point	TP4				AtMega16U2 5V
Test Point	TP5				VUSB
Test Point	TP6				VSYS
Test Point	TP7				5V
Test Point	TP8				VBAT
Test Point	TP9				GND
Test Point	TP10				USB Data Negative
Test Point	TP11				USB Data Positive
Test Point	TP12				AtMega16U2 VUSB
Test Point	TP13				3V3

Arduino Full Pin Defiintion Code Snippet

//include libraries

//pin defintions
#define LVL_SHIFT_EN 2

#define TFT_PWR_EN 4
#define TFT_RESET 29
#define TFT_DC 28
#define TFT_CS 27

#define RFM_PWR_EN 5
#define RFM_INT 3
#define RFM_CS 10

#define TP_RESET 25
#define TP_SHUTDOWN 24
#define TP_CS 47
#define TP_BUTTON 23
#define TP_MOTION 48

#define SD_CS 22
#define DET_CARD 39

#define ROW_1 30
#define ROW_2 31
#define ROW_3 32
#define ROW_4 33
#define ROW_5 34
#define COL_1 35
#define COL_2 36
#define COL_3 37
#define COL_4 40
#define COL_5 41
#define COL_6 38
#define COL_7 42
#define COL_8 44
#define COL_9 45
#define COL_10 46

#define BAT_PIN A7