add debugging stuff

examples/receiver/receiver.go

@@ -0,0 +1,64 @@
+//go:build tinygo
+
+package main
+
+import (
+	"context"
+	"io"
+	"machine"
+	"time"
+
+	"github.com/soypat/lora"
+	"github.com/soypat/lora/sx127x"
+)
+
+var (
+	SX127X_SPI = machine.SPI0
+)
+
+const (
+	SX127X_PIN_RST = machine.GP16
+	// SPI definition for SX127x
+
+	SX127X_PIN_SCK = machine.GP2
+	SX127X_PIN_TX  = machine.GP3
+	SX127X_PIN_RX  = machine.GP4
+	SX127X_PIN_CS  = machine.GP5
+)
+
+func main() {
+	time.Sleep(500 * time.Millisecond)
+	defer println("program end")
+	SX127X_PIN_RST.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	SX127X_PIN_CS.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	err := SX127X_SPI.Configure(machine.SPIConfig{
+		Frequency: 100000,
+		SCK:       SX127X_PIN_SCK,
+		SDO:       SX127X_PIN_TX,
+		SDI:       SX127X_PIN_RX,
+	})
+	if err != nil {
+		panic(err.Error())
+	}
+	dev := sx127x.NewLoRa(SX127X_SPI, SX127X_PIN_CS.Set, SX127X_PIN_RST.Set)
+	// Replace with your frequency:
+	err = dev.Configure(sx127x.DefaultConfig(lora.Freq433_0M))
+	if err != nil {
+		panic(err.Error())
+	}
+	println("config success; receiving messages")
+	var rx [256]byte
+	// This blocks forever reading messages received.
+	ctx := context.Background()
+	err = dev.RxContinuous(ctx, func(r io.Reader) (_ error) {
+		n, err := r.Read(rx[:])
+		if err != nil {
+			return err
+		}
+		println("received LoRa:", string(rx[:n]))
+		return nil
+	})
+	if err != nil {
+		panic(err)
+	}
+}

examples/transmitter/transmitter.go

@@ -40,16 +40,7 @@ func main() {
 		panic(err.Error())
 	}
 	dev := sx127x.NewLoRa(SX127X_SPI, SX127X_PIN_CS.Set, SX127X_PIN_RST.Set)
-	err = dev.Configure(lora.Config{
-		Bandwidth:      lora.BW125k,
-		Frequency:      lora.Freq433_0M,
-		CodingRate:     lora.CR4_5,
-		SpreadFactor:   lora.SF7,
-		HeaderType:     lora.HeaderExplicit,
-		TxPower:        0,
-		CRC:            true,
-		PreambleLength: 12,
-	})
+	err = dev.Configure(sx127x.DefaultConfig(lora.Freq433_0M))
 	if err != nil {
 		panic(err.Error())
 	}
@@ -57,7 +48,6 @@ func main() {
 	randomU32, _ := dev.RandomU32()
 	myName := fmt.Sprintf("user-%x", randomU32%0xffff)
 	println("config success; sending messages as ", myName)
-	var rx [256]byte
 	packet := []byte(myName + " says hello!")
 	for {
 		err = dev.Tx(packet)
@@ -67,13 +57,5 @@ func main() {
 			print(".")
 		}
 		time.Sleep(2 * time.Second)
-		for i := 0; i < 6; i++ {
-			n, err := dev.RxSingle(rx[:])
-			if err != nil {
-				println("rx error:", err.Error())
-				continue
-			}
-			println("got message: ", string(rx[:n]))
-		}
 	}
 }