maixbit: add board definition and dummy runtime

src/machine/board_k210.go

@@ -0,0 +1,55 @@
+// +build maixbit
+
+package machine
+
+// K210 IO pins.
+const (
+	P00 Pin = 0
+	P01 Pin = 1
+	P02 Pin = 2
+	P03 Pin = 3
+	P04 Pin = 4
+	P05 Pin = 5
+	P06 Pin = 6
+	P07 Pin = 7
+	P08 Pin = 8
+	P09 Pin = 9
+	P10 Pin = 10
+	P11 Pin = 11
+	P12 Pin = 12
+	P13 Pin = 13
+	P14 Pin = 14
+	P15 Pin = 15
+	P16 Pin = 16
+	P17 Pin = 17
+	P18 Pin = 18
+	P19 Pin = 19
+	P20 Pin = 20
+	P21 Pin = 21
+	P22 Pin = 22
+	P23 Pin = 23
+	P24 Pin = 24
+	P25 Pin = 25
+	P26 Pin = 26
+	P27 Pin = 27
+	P28 Pin = 28
+	P29 Pin = 29
+	P30 Pin = 30
+	P31 Pin = 31
+	P32 Pin = 32
+	P33 Pin = 33
+	P34 Pin = 34
+	P35 Pin = 35
+	P36 Pin = 36
+	P37 Pin = 37
+	P38 Pin = 38
+	P39 Pin = 39
+	P40 Pin = 40
+	P41 Pin = 41
+	P42 Pin = 42
+	P43 Pin = 43
+	P44 Pin = 44
+	P45 Pin = 45
+	P46 Pin = 46
+	P47 Pin = 47
+)

src/machine/board_maixbit.go

@@ -0,0 +1,61 @@
+// +build maixbit
+
+package machine
+
+// GPIO pins.
+const (
+	D0 = P08
+	D1 = P09
+	D2 = P10
+	D3 = P11
+	D4 = P12
+	D5 = P13
+	D6 = P14
+	D7 = P15
+)
+
+// High-speed GPIO pins (GPIOHS).
+const (
+	DHS0  = P16
+	DHS1  = P17
+	DHS2  = P18
+	DHS3  = P19
+	DHS4  = P20
+	DHS5  = P21
+	DHS6  = P22
+	DHS7  = P23
+	DHS8  = P24
+	DHS9  = P25
+	DHS10 = P26
+	DHS11 = P27
+	DHS12 = P28
+	DHS13 = P29
+	DHS14 = P30
+	DHS15 = P31
+	DHS16 = P32
+	DHS17 = P33
+	DHS18 = P34
+	DHS19 = P35
+	DHS20 = P36
+	DHS21 = P37
+	DHS22 = P38
+	DHS23 = P39
+	DHS24 = P40
+	DHS25 = P41
+	DHS26 = P42
+	DHS27 = P43
+	DHS28 = P44
+	DHS29 = P45
+	DHS30 = P46
+	DHS31 = P47
+)
+
+const (
+	LED       = LED1
+	LED1      = LED_RED
+	LED2      = LED_GREEN
+	LED3      = LED_BLUE
+	LED_RED   = D5
+	LED_GREEN = D4
+	LED_BLUE  = D6
+)

src/machine/machine_k210.go

@@ -0,0 +1,30 @@
+// +build k210
+
+package machine
+
+func CPUFrequency() uint32 {
+	return 400000000
+}
+
+type PinMode uint8
+
+const (
+	PinInput PinMode = iota
+	PinOutput
+	PinPWM
+	PinSPI
+	PinI2C = PinSPI
+)
+
+// Configure this pin with the given configuration.
+func (p Pin) Configure(config PinConfig) {
+}
+
+// Set the pin to high or low.
+func (p Pin) Set(high bool) {
+}
+
+// Get returns the current value of a GPIO pin.
+func (p Pin) Get() bool {
+	return true
+}