Add support for LPS22HB MEMS nano pressure sensor (#297)

lps22hb: add support for lps22hb

examples/lps22hb/main.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"machine"
+	"time"
+
+	"tinygo.org/x/drivers/lps22hb"
+)
+
+func main() {
+
+	machine.I2C1.Configure(machine.I2CConfig{
+		SCL:       machine.P0_15, // SCL1 on Nano 33 BLE Sense
+		SDA:       machine.P0_14, // SDA1 on Nano 33 BLE Sense
+		Frequency: machine.TWI_FREQ_400KHZ,
+	})
+
+	sensor := lps22hb.New(machine.I2C1)
+
+	if !sensor.Connected() {
+		println("LPS22HB not connected!")
+		return
+	}
+
+	sensor.Configure()
+
+	for {
+
+		p, _ := sensor.ReadPressure()
+		t, _ := sensor.ReadTemperature()
+		println("p =", float32(p)/1000.0, "hPa / t =", float32(t)/1000.0, "*C")
+		time.Sleep(time.Second)
+		// note: the device would power down itself after each query
+
+	}
+
+}