board: Adafruit MacroPad RP2040

src/machine/board_macropad-rp2040.go

@@ -0,0 +1,66 @@
+//go:build macropad_rp2040
+// +build macropad_rp2040
+
+package machine
+
+const (
+	NeopixelCount = 12
+
+	// Onboard crystal oscillator frequency, in MHz.
+	xoscFreq = 12 // MHz
+)
+
+const (
+	SWITCH = GPIO0
+
+	KEY1  = GPIO1
+	KEY2  = GPIO2
+	KEY3  = GPIO3
+	KEY4  = GPIO4
+	KEY5  = GPIO5
+	KEY6  = GPIO6
+	KEY7  = GPIO7
+	KEY8  = GPIO8
+	KEY9  = GPIO9
+	KEY10 = GPIO10
+	KEY11 = GPIO11
+	KEY12 = GPIO12
+
+	LED = GPIO13
+
+	SPEAKER_ENABLE = GPIO14
+	SPEAKER        = GPIO16
+
+	ROT_A = GPIO18
+	ROT_B = GPIO17
+
+	OLED_CS  = GPIO22
+	OLED_RST = GPIO23
+	OLED_DC  = GPIO24
+
+	NEOPIXEL = GPIO19
+	WS2812   = NEOPIXEL
+)
+
+// I2C Default pins on Raspberry Pico.
+const (
+	I2C0_SDA_PIN = GPIO20
+	I2C0_SCL_PIN = GPIO21
+
+	I2C1_SDA_PIN = 31 // not pinned out
+	I2C1_SCL_PIN = 31 // not pinned out
+)
+
+// SPI default pins
+const (
+	// Default Serial Clock Bus 1 for SPI communications
+	SPI1_SCK_PIN = GPIO26
+	// Default Serial Out Bus 1 for SPI communications
+	SPI1_SDO_PIN = GPIO27 // Tx
+	// Default Serial In Bus 1 for SPI communications
+	SPI1_SDI_PIN = GPIO28 // Rx
+
+	SPI0_SCK_PIN = 31 // not pinned out
+	SPI0_SDO_PIN = 31 // not pinned out
+	SPI0_SDI_PIN = 31 // not pinned out
+)

src/machine/machine_rp2040_gpio.go

@@ -88,12 +88,20 @@ const (
 	PinSPI
 )
 
+func (p Pin) PortMaskSet() (*volatile.Register32, uint32) {
+	return &rp.SIO.GPIO_OUT_SET, 1 << p
+}
+
 // set drives the pin high
 func (p Pin) set() {
 	mask := uint32(1) << p
 	rp.SIO.GPIO_OUT_SET.Set(mask)
 }
 
+func (p Pin) PortMaskClear() (*volatile.Register32, uint32) {
+	return &rp.SIO.GPIO_OUT_CLR, 1 << p
+}
+
 // clr drives the pin low
 func (p Pin) clr() {
 	mask := uint32(1) << p