1// +build sam,atsamd21 arduino_nano33 circuitplay_express
2
3package machine
4
5// Return the current CPU frequency in hertz.
6func CPUFrequency() uint32 {
7	return 48000000
8}
9
10// Hardware pins
11const (
12	PA00 Pin = 0
13	PA01 Pin = 1
14	PA02 Pin = 2
15	PA03 Pin = 3
16	PA04 Pin = 4
17	PA05 Pin = 5
18	PA06 Pin = 6
19	PA07 Pin = 7
20	PA08 Pin = 8
21	PA09 Pin = 9
22	PA10 Pin = 10
23	PA11 Pin = 11
24	PA12 Pin = 12
25	PA13 Pin = 13
26	PA14 Pin = 14
27	PA15 Pin = 15
28	PA16 Pin = 16
29	PA17 Pin = 17
30	PA18 Pin = 18
31	PA19 Pin = 19
32	PA20 Pin = 20
33	PA21 Pin = 21
34	PA22 Pin = 22
35	PA23 Pin = 23
36	PA24 Pin = 24
37	PA25 Pin = 25
38	PA26 Pin = 26
39	PA27 Pin = 27
40	PA28 Pin = 28
41	PA29 Pin = 29
42	PA30 Pin = 30
43	PA31 Pin = 31
44	PB00 Pin = 32
45	PB01 Pin = 33
46	PB02 Pin = 34
47	PB03 Pin = 35
48	PB04 Pin = 36
49	PB05 Pin = 37
50	PB06 Pin = 38
51	PB07 Pin = 39
52	PB08 Pin = 40
53	PB09 Pin = 41
54	PB10 Pin = 42
55	PB11 Pin = 43
56	PB12 Pin = 44
57	PB13 Pin = 45
58	PB14 Pin = 46
59	PB15 Pin = 47
60	PB16 Pin = 48
61	PB17 Pin = 49
62	PB18 Pin = 50
63	PB19 Pin = 51
64	PB20 Pin = 52
65	PB21 Pin = 53
66	PB22 Pin = 54
67	PB23 Pin = 55
68	PB24 Pin = 56
69	PB25 Pin = 57
70	PB26 Pin = 58
71	PB27 Pin = 59
72	PB28 Pin = 60
73	PB29 Pin = 61
74	PB30 Pin = 62
75	PB31 Pin = 63
76)
77