IRLib2 Support for SAMD21

	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O
1	Port	Per E	Per F			Int	MKR 1000	Arduino Zero	Arduino M0 Pro	Feather M0	Feather M0 Express	Circuit Pl Exp	Trinket M0	Gemma M0	Itsy-bitsy M0

2	PA00	TCC2_CH0	-na-			00	34 XIN32	XIN32				28 Internal SDA	07 Dotstar Data	03 Dotstar Data	40 Dotstar Clk
3	PA01	TCC2_CH1	-na-			01	35 XOUT n	XOUT32				29 Internal SCL	08 Dotstar Clk	04 Dotstar Clk	41 Dotstar Data
4	PA02	-na-	-na-			02	15 A0 DAC0 ni	14 A0 43 DAC0	24 A0, 47 DAC	14 A0, 43 DAC	14 A0, 42 DAC	12 A0, 14	01, 14 A0	01, 08 A0	14 A0, 43 DAC
5	PA03	-na-	-na-			03	25 AREF	42 AREF	15 AREF	42 AREF	41 AREF				42 AREF
6	PA04	TCC0_CH0	-na-	e	E	04	18 A3~ ni	17 A3	27 A3	17 A3	17 A3	24 A10 Proximity		00~ SDA TX MOSI, 10 A2	17 A3
7	PA05	TCC0_CH1	-na-	o	E	05	19 A4~ ni	18 A4	28 A4	18 A4	18 A4	06~ A1, 15		02~ SCL RX CLK, 09 A1	18 A4
8	PA06	TCC1_CH0	-na-	e	E	06	20 A5 ni	08~	08~, 45 EDBG:8	08~, 40 EDBG:8, 44 A6	08~, 20 A6, 40 NeoPixel	09~ A2, 16	04~ TX, 18 A4		08, 24 A10
9	PA07	TCC1_CH1	-na-	o	E	07	21 A6 ni	09~	09~, 46 EDBG:9	09~, 41 EDBG:9, 45 A7	09~, 21 A7	10~ A3, 17	03~ RX, 17 A3		09, 25 A11
10	PA08	TCC0_CH0	TCC1_CH2	e	E	NMI	11 SDA ?~	04~ ni	02~ ni	04~	04~, 22 A8, 37 Flash MOSI	35 SDA	00~ SDA, 05,16 A2		04, 22 A8
11	PA09	TCC0_CH1	TCC1_CH3	o	E	09	12 SCL ni	03~	03~	03~	03~, 38 Flash SCK	23 A9 Thermistor	02~ SCL, 06,15 A1		03
12	PA10	TCC1_CH0	TCC0_CH2	e	F	10	02~’ ni	01 TX	01 TX	01 TX	01 TX, 25 A11	34 SCK	13 LED, 12		01 TX, 21 A7
13	PA11	TCC1_CH1	TCC0_CH3	o	F	11	03~’ ni	00 RX	00 RX	00 RX	00 RX, 24 A10	22 A8 Light Sensor			00 RX, 20 A6
14	PA12	TCC2_CH2	TCC0_CH6	e	F	12	26 W-MOSI	22 MISO	18 MISO	22 MISO	28 MISO	26 IR in			28 MSIO
15	PA13	TCC2_CH1	TCC0_CH7	o	F	13	27 W-SCK	38 EDBG_GPI00	43 EDBG	38 EDBG	39 Flash SS	27 LIS IRQ
16	PA14	TC3_CH0	TCC0_CH4	e	F	14	28 W-SSN	02	04~	02	02, Flash MISO	05 Right Button	21 txled	14 txled	02
17	PA15	TC3_CH1	TCC0_CH5	o	F	15	29 W-MISO	05~’	05~	05~’	05~’, 23 A9	07 Switch	22 rxled		05, 23 A9
18	PA16	TCC2_CH0	TCC0_CH6	e	F	00	08~’ MOSI	11~’	11~, 40 EDBG:MOSI	11~’, 35 EDBG:MOSI	11~’, 35 EDBG:MOSI	30 Internal MISO			11
19	PA17	TCC2_CH1	TCC0_CH7	o	F	01	09 SCK	13~’ LED	13~, 42 EDBG:SCK	13 LED, EDBG:SCK	13 LED, EDBG:SCK	13 Red LED			13
20	PA18	TC3_CH0	TCC0_CH2	e	F	02	25 USB/ID	10~’	10~, 41 EDBG:SS	10~’, 36 EDBG:SS	10~’, 36 EDBG:SS				10
21	PA19	TC3_CH1	TCC0_CH3	o	F	03	10~’ MISO ni	12~	12~, 39 EDBG:MISO	12~, 34 EDBG:MISO	12~, 34 EDBG:MISO				12
22	PA20	TC7_CH0	TCC0_CH6	e	F	04	06~	06~	06~	06~	06~	32 Internal MOSI			06
23	PA21	TC7_CH1	TCC0_CH7	o	F	05	07~	07	07~, 44 EDBG:7	07, 39 EDBG:7	07, 39 EDBG:7	31 Internal SCK			07
24	PA22	TC4_CH0	TCC0_CH4	e	F	06	00~’	20 SDA	16 SDA, 37 EDBG:SDA	20 SDA, 32 EDBG:SDA	26 SDA	36 Host USB			26 SDA
25	PA23	TC4_CH1	TCC0_CH5	o	F	07	01~’	21 SCL	17 SCL, 38 EDBG:SCL	21 SCL, 33 EDBG:SCL	27 SCL	25~ IR out		13 LED	27 SCL
26	PA24	TC5_CH0	TCC1_CH2	e	F	12	22 USB/DM	28 USB/DM	33 USB/DM	28 USB/DM	34 USB/DM	37 USB/DM	10 USB/DM	06 USB/DM	34 USB/DM
27	PA25	TC5_CH1	TCC1_CH3	o	F	13	23 USB/DP	29 USB/DP	34 USB/DP	29 USB/DP	35 USB/DP	38 USB/DP	11 USB/DP	07 USB/DP	35 USB/DP
28	PA26	-na-	-na-
29	PA27	-na-	-na-			15	30 W-RESET	26 TX LED	31 TX LED	26 TX LED	32 TX LED				39 Flash SS
30	PA28	-na-	-na-			08	31 W-CHIP_EN	27 USB_H_EN	32 USB_H_EN	27 USB_H_EN	33 USB_H_EN	04 Left Button	09 USB_H_EN	05 USB_H_EN	32 TX LED, 33 USB_H_EN
31	PA29	-na-	-na-
32	PA30	TCC1_CH0	-na-	e	E	10						11 Spkr S.Dn	19 SWCLK	11 SWCLK
33	PA31	TCC1_CH1	-na-	o	E	11							20 SWDIO	12 SWDIO	31 RX LED
34	PB00	TC7_CH0	-na-			00
35	PB01	TC7_CH1	-na-			01				19 A5	19 A5
36	PB02	TC6_CH0	-na-			02	16 A1	19 A5	29 A5			02 A5 SDA, 19			19 A5
37	PB03	TC6_CH1	-na-			03	17 A2	25 RX LED	30 RX LED	25 RX LED	31 RX LED	03 A4 SCL, 18			36 Flash MISO
38	PB04	-na-	-na-			04
39	PB05	-na-	-na-			05
40	PB06	-na-	-na-			06
41	PB07	-na-	-na-			07
42	PB08	TC4_CH0	-na-			08	32 W-WAKE	15 A1 ?~	25 A1	15 A1 ?~	15 A1 ?~	01~ TX A7, 21			15 A1
43	PB09	TC4_CH1	-na-			09	33 W-IRQN	16 A2 ?~	26 A2	16 A2 ?~	16 A2 ?~	00~ RX A6, 20			16 A2
44	PB10	TC5_CH0	TCC0_CH4	e	F	10	04~’	23 MOSI	21 MOSI	23 MOSI	29 MOSI				29 MOSI
45	PB11	TC5_CH1	TCC0_CH5	o	F	11	05~’	24 SCK	20 SCK	24 SCK	30 SCK				30 SCK
46	PB12	TC4_CH0	TCC0_CH6	e	F	12
47	PB13	TC4_CH1	TCC0_CH7	o	F	13
48	PB14	TC5_CH0	-na-			14
49	PB15	TC5_CH0	-na-			15
50	PB16	TC6_CH0	TCC0_CH4	e	F	00
51	PB17	TC6_CH1	TCC0_CH5	o	F	01
52	PB18	-na-	-na-
53	PB19	-na-	-na-
54	PB20	-na-	-na-
55	PB21	-na-	-na-
56	PB22	TC7_CH0	-na-			06	14 TX ni	30 EBDG TX	35 EDBG TX	30 EBDG TX		33 Flash CS			37 Flash MOSI
57	PB23	TC7_CH0	-na-			07	13 RX ni	31 EBDG RX	36 EDBG RX	31 EBDG RX		08 NeoPixels			38 Flash SCK
58	PB24	-na-	-na-
59	PB25	-na-	-na-
60	PB26	-na-	-na-
61	PB27	-na-	-na-
62	PB28	-na-	-na-
63	PB29	-na-	-na-
64	PB30	TCC0_CH0	TCC1_CH2	e	E	14
65	PB31	TCC0_CH1	TCC1_CH3	o	E	15
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67							Legend
68							Unsupported	Confirmed working	Default	User Inaccessible	Untested	Untested should work
69
70							NOTES:
71							Pins marked with a ~ (tilda) means that the board advertises it has PWM.
72							Pins marked with ~' (tilda followed by an apostrophe) means that we do PWM on a different timer than the board normally uses.
73							Pins marked with ?~ (question mark followed by tilda) means that PWM is not advertised but the pin attributes in variant.cpp indicate it is available
74							Pins marked with ni means "no interrupt". The attachInterrupt() method is not supported and cannot be used for IRrecvPCI or IRfreq receivers.
75							The primary use of the pin is listed first and alternate uses are separated by commas.
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