1// +build feather_m4
2
3package machine
4
5// used to reset into bootloader
6const RESET_MAGIC_VALUE = 0xf01669ef
7
8// GPIO Pins
9const (
10	D0  = PB17 // UART0 RX/PWM available
11	D1  = PB16 // UART0 TX/PWM available
12	D4  = PA14 // PWM available
13	D5  = PA16 // PWM available
14	D6  = PA18 // PWM available
15	D8  = PB03 // built-in neopixel
16	D9  = PA19 // PWM available
17	D10 = PA20 // can be used for PWM or UART1 TX
18	D11 = PA21 // can be used for PWM or UART1 RX
19	D12 = PA22 // PWM available
20	D13 = PA23 // PWM available
21	D21 = PA13 // PWM available
22	D22 = PA12 // PWM available
23	D23 = PB22 // PWM available
24	D24 = PB23 // PWM available
25	D25 = PA17 // PWM available
26)
27
28// Analog pins
29const (
30	A0 = PA02 // ADC/AIN[0]
31	A1 = PA05 // ADC/AIN[2]
32	A2 = PB08 // ADC/AIN[3]
33	A3 = PB09 // ADC/AIN[4]
34	A4 = PA04 // ADC/AIN[5]
35	A5 = PA06 // ADC/AIN[10]
36)
37
38const (
39	LED = D13
40)
41
42// UART0 aka USBCDC pins
43const (
44	USBCDC_DM_PIN = PA24
45	USBCDC_DP_PIN = PA25
46)
47
48const (
49	UART_TX_PIN = D1
50	UART_RX_PIN = D0
51)
52
53const (
54	UART2_TX_PIN = A4
55	UART2_RX_PIN = A5
56)
57
58// I2C pins
59const (
60	SDA_PIN = D22 // SDA: SERCOM2/PAD[0]
61	SCL_PIN = D21 // SCL: SERCOM2/PAD[1]
62)
63
64// SPI pins
65const (
66	SPI0_SCK_PIN = D25 // SCK: SERCOM1/PAD[1]
67	SPI0_SDO_PIN = D24 // SDO: SERCOM1/PAD[3]
68	SPI0_SDI_PIN = D23 // SDI: SERCOM1/PAD[2]
69)
70
71// USB CDC identifiers
72const (
73	usb_STRING_PRODUCT      = "Adafruit Feather M4"
74	usb_STRING_MANUFACTURER = "Adafruit"
75)
76
77var (
78	usb_VID uint16 = 0x239A
79	usb_PID uint16 = 0x8022
80)
81