circuitpython/stm/boards/PYBOARD4/pins.csv

1	X1	PB6
2	X2	PB7
3	X3	PC4
4	X4	PB5
5	X5	Reset
6	X6	GND
7	X7	3.3V
8	X8	VIN
9	X9	PA0
10	X10	PA1
11	X11	PA2
12	X12	PA3
13	X13	PA4
14	X14	PA5
15	X15	PA6
16	X16	PA7
17	X17	PB3
18	X18	PC13
19	X19	PC0
20	X20	PC1
21	X21	PC2
22	X22	PC3
23	X23	A3.3V
24	X24	AGND
25	Y1	PB10
26	Y2	PB11
27	Y3	PB0
28	Y4	PB1
29	Y5	Reset
30	Y6	GND
31	Y7	3.3V
32	Y8	VIN
33	Y9	PC6
34	Y10	PC7
35	Y11	PB8
36	Y12	PB9
37	Y13	PB12
38	Y14	PB13
39	Y15	PB14
40	Y16	PB15
41	LED_BLUE	PB4
42	LED_RED	PA13
43	LED_GREEN	PA14
44	LED_YELLOW	PA15
45	SW	PB3