mirror of
https://github.com/soypat/lora.git
synced 2026-08-04 19:17:45 +00:00
soypat
74 lines
1.5 KiB
Go
74 lines
1.5 KiB
Go
//go:build tinygo
|
|
|
|
package main
|
|
|
|
import (
|
|
"context"
|
|
"io"
|
|
"machine"
|
|
"strconv"
|
|
"time"
|
|
|
|
"github.com/soypat/lora"
|
|
"github.com/soypat/lora/sx127x"
|
|
)
|
|
|
|
var (
|
|
SX127X_SPI = machine.SPI0
|
|
)
|
|
|
|
const (
|
|
SX127X_PIN_RST = machine.GP6
|
|
// 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()
|
|
for {
|
|
value, err := dev.ReadTemperature()
|
|
println("temperature:", value, err)
|
|
time.Sleep(10 * time.Second)
|
|
err = dev.RxContinuous(ctx, func(r io.Reader) (_ error) {
|
|
n, err := r.Read(rx[:])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
println("received LoRa length", n, ":", strconv.Quote(string(rx[:n])))
|
|
return nil
|
|
})
|
|
|
|
if err != nil {
|
|
println(err.Error())
|
|
} else {
|
|
println("RX finished no error")
|
|
}
|
|
}
|
|
}
|