add barebones

examples/barebones/barebones.go

@@ -0,0 +1,81 @@
+package main
+
+import (
+	"machine"
+	"time"
+
+	"github.com/soypat/lora"
+	"github.com/soypat/lora/sx127x"
+)
+
+const (
+	pinCS0  = machine.GPIO27
+	pinCS1  = machine.GPIO28
+	pinRST0 = machine.GPIO29
+	pinRST1 = machine.GPIO29
+	pinMOSI = machine.GPIO3
+	pinMISO = machine.GPIO4
+	pinSCK  = machine.GPIO6
+	pinDIO0 = machine.GPIO7
+)
+
+var (
+	dev0, dev1 *sx127x.DeviceLoRaBare
+	cfg        lora.Config
+)
+
+func main() {
+	time.Sleep(1500 * time.Millisecond)
+	println("program start")
+	var err error
+	setup()
+	defer println("program end")
+	packet := []byte("hello LoRa")
+	go func() {
+		var last bool
+		for {
+			time.Sleep(time.Millisecond * 10)
+			got := pinDIO0.Get()
+			if got != last {
+				println("DIO0 switch: ", got)
+				last = got
+			}
+		}
+	}()
+	for {
+		err = dev0.Configure(cfg)
+		for err == nil { // Tx Loop
+			println("transmitting packet")
+			err = dev0.Send(packet)
+			time.Sleep(10 * time.Second)
+			dev0.HandleInterrupt()
+		}
+		if err != nil {
+			println("got error: ", err.Error())
+		}
+		time.Sleep(time.Second)
+	}
+}
+
+func setup() {
+	var bus = machine.SPI0
+	err := bus.Configure(machine.SPIConfig{
+		Frequency: 10_000,
+		SCK:       pinSCK,
+		SDO:       pinMOSI,
+		SDI:       pinMISO,
+	})
+	if err != nil {
+		panic(err.Error())
+	}
+	pinCS0.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	pinCS1.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	pinRST0.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	pinRST1.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	dev0 = &sx127x.DeviceLoRaBare{DL: *sx127x.NewLoRa(bus, pinCS0.Set, pinRST0.Set)}
+	pinDIO0.Configure(machine.PinConfig{Mode: machine.PinInputPulldown})
+	// dev1 = sx127x.NewLoRa(bus, pinCS1.Set, pinRST1.Set)
+
+	cfg = sx127x.DefaultConfig(lora.Freq433_0M)
+	cfg.TxPower = 10
+}