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)
+	}
+}