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deadprogram
107 lines
2.8 KiB
Go
107 lines
2.8 KiB
Go
package main
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// This example code demonstrates Lora RX/TX With SX127x driver
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// You need to connect SPI, RST, CS, DIO0 (aka IRQ) and DIO1 to use.
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import (
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"machine"
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"time"
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"tinygo.org/x/drivers/lora"
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"tinygo.org/x/drivers/sx127x"
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)
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const FREQ = 868100000
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const (
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LORA_DEFAULT_RXTIMEOUT_MS = 1000
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LORA_DEFAULT_TXTIMEOUT_MS = 5000
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)
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var (
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loraRadio *sx127x.Device
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txmsg = []byte("Hello TinyGO")
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// We assume LoRa Featherwing module is connected to PyBadge:
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SX127X_PIN_RST = machine.D11
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SX127X_PIN_CS = machine.D10
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SX127X_PIN_DIO0 = machine.D6
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SX127X_PIN_DIO1 = machine.D9
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SX127X_SPI = machine.SPI0
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)
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func dioIrqHandler(machine.Pin) {
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loraRadio.HandleInterrupt()
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}
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func main() {
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time.Sleep(5 * time.Second)
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println("\n# TinyGo Lora RX/TX test")
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println("# ----------------------")
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machine.LED.Configure(machine.PinConfig{Mode: machine.PinOutput})
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SX127X_PIN_RST.Configure(machine.PinConfig{Mode: machine.PinOutput})
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SX127X_PIN_CS.Configure(machine.PinConfig{Mode: machine.PinOutput})
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SX127X_PIN_DIO0.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
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SX127X_PIN_DIO1.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
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SX127X_SPI.Configure(machine.SPIConfig{Frequency: 500000, Mode: 0})
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println("main: create and start SX127x driver")
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loraRadio = sx127x.New(SX127X_SPI, SX127X_PIN_CS, SX127X_PIN_RST)
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loraRadio.Reset()
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state := loraRadio.DetectDevice()
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if !state {
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panic("main: sx127x NOT FOUND !!!")
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} else {
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println("main: sx127x found")
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}
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// Setup DIO0 interrupt Handling
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if err := SX127X_PIN_DIO0.SetInterrupt(machine.PinRising, dioIrqHandler); err != nil {
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println("could not configure DIO0 pin interrupt:", err.Error())
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}
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// Setup DIO1 interrupt Handling
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if err := SX127X_PIN_DIO1.SetInterrupt(machine.PinRising, dioIrqHandler); err != nil {
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println("could not configure DIO1 pin interrupt:", err.Error())
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}
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// Prepare for Lora Operation
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loraConf := lora.Config{
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Freq: FREQ,
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Bw: lora.Bandwidth_500_0,
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Sf: lora.SpreadingFactor9,
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Cr: lora.CodingRate4_7,
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HeaderType: lora.HeaderExplicit,
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Preamble: 12,
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Iq: lora.IQStandard,
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Crc: lora.CRCOn,
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SyncWord: lora.SyncPrivate,
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LoraTxPowerDBm: 20,
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}
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loraRadio.LoraConfig(loraConf)
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var count uint
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for {
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tStart := time.Now()
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println("main: Receiving Lora for 10 seconds")
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for time.Since(tStart) < 10*time.Second {
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buf, err := loraRadio.Rx(LORA_DEFAULT_RXTIMEOUT_MS)
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if err != nil {
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println("RX Error: ", err)
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} else if buf != nil {
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println("Packet Received: len=", len(buf), string(buf))
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}
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}
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println("main: End Lora RX")
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println("LORA TX size=", len(txmsg), " -> ", string(txmsg))
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err := loraRadio.Tx(txmsg, LORA_DEFAULT_TXTIMEOUT_MS)
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if err != nil {
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println("TX Error:", err)
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}
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count++
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}
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}
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