PinMap.md

Pin Mappings

This document is intended to be a quick reference to the pin mapping.

BUTTONS

CHIP PIN	PORT_BIT	I/O	NOTES
14	PIO0_3	INPUT	BTN5 - internal pull-up (far left button)
13	PIO1_20	INPUT	BTN1 - internal pull-up
4	PIO0_1	INPUT	BTN2 - internal pull-up / USB_FTOGGLE
2	PIO1_19	INPUT	BTN3 - internal pull-up
40	PIO0_16	INPUT	BTN4 / WAKEUP - externally pulled high
3	RESET	INPUT	externally pulled high (far right button)

BLUETOOTH

CHIP PIN	PORT_BIT	I/O	NOTES
26	PIO1_21	OUTPUT	BLUE_NRESET
27	PIO0_8	INPUT	MISO0
28	PIO0_9	OUTPUT	MOSI0
31	PIO1_29	OUTPUT	SCK0
30	PIO0_22	INPUT	BLUE_REQN
45	PIO0_17	INPUT	BLUE_ACTIVE

VFD

CHIP PIN	PORT_BIT	I/O	NOTES
15	PIO0_4	OUTPUT	VFD_PW_EN - active low, externally pulled high
37	PIO1_14	OUTPUT	VFD_STB (strobe)
38	PIO1_22	OUTPUT	MOSI1
43	PIO1_15	OUTPUT	SCK1

USB

CHIP PIN	PORT_BIT	I/O	NOTES
18	PIO1_23	INPUT	VBUS_SENSE
22	PIO0_6	OUTPUT	USB_CONNECT (active low)

AUDIO

CHIP PIN	PORT_BIT	I/O	NOTES
24	PIO1_28	OUTPUT	AUDIO OUT (use PWM?)
25	PIO1_31	OUTPUT	AUDIO STANDBY - active low, externally pulled low

RGB LED

CHIP PIN	PORT_BIT	I/O	NOTES
23	PIO0_7	OUTPUT	RGB_DATA

BATTERY STATUS

CHIP PIN	PORT_BIT	I/O	NOTES
16	PIO0_5	INPUT	BAT_STAT2 - internal pull-up
17	PIO0_21	INPUT	BAT_STAT1 - internal pull-up

DEBUGGING

CHIP PIN	PORT_BIT	I/O	NOTES
21	PIO1_24	OUTPUT	LED - for simple debugging
46	PIO0_18	OUTPUT	RXD (3-pin header)
47	PIO0_19	INPUT	TXD (3-pin header)