clean commit, added smoke tests

examples/pcd8544/setpixel/main.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"image/color"
+	"machine"
+	"time"
+
+	"github.com/tinygo-org/drivers/pcd8544"
+)
+
+func main() {
+	dcPin := machine.GPIO{machine.P3}
+	dcPin.Configure(machine.GPIOConfig{Mode: machine.GPIO_OUTPUT})
+	rstPin := machine.GPIO{machine.P4}
+	rstPin.Configure(machine.GPIOConfig{Mode: machine.GPIO_OUTPUT})
+	scePin := machine.GPIO{machine.P5}
+	scePin.Configure(machine.GPIOConfig{Mode: machine.GPIO_OUTPUT})
+
+	machine.SPI0.Configure(machine.SPIConfig{})
+
+	lcd := pcd8544.New(machine.SPI0, dcPin, rstPin, scePin)
+	lcd.Configure(pcd8544.Config{})
+
+	var x int16
+	var y int16
+	deltaX := int16(1)
+	deltaY := int16(1)
+	for {
+		pixel := lcd.GetPixel(x, y)
+		c := color.RGBA{255, 255, 255, 255}
+		if pixel {
+			c = color.RGBA{0, 0, 0, 255}
+		}
+		lcd.SetPixel(x, y, c)
+		lcd.Display()
+
+		x += deltaX
+		y += deltaY
+
+		if x == 0 || x == 83 {
+			deltaX = -deltaX
+		}
+
+		if y == 0 || y == 47 {
+			deltaY = -deltaY
+		}
+		time.Sleep(1 * time.Millisecond)
+	}
+}