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https://github.com/soypat/lora.git
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soypat
69 lines
1.4 KiB
Go
69 lines
1.4 KiB
Go
//go:build tinygo
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package main
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import (
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"fmt"
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"machine"
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"time"
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"github.com/soypat/lora"
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"github.com/soypat/lora/sx127x"
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)
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var (
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SX127X_SPI = machine.SPI0
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)
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const (
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SX127X_PIN_RST = machine.GP6
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// SPI definition for SX127x
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SX127X_PIN_SCK = machine.GP2
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SX127X_PIN_TX = machine.GP3
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SX127X_PIN_RX = machine.GP4
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SX127X_PIN_CS = machine.GP5
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)
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func main() {
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time.Sleep(500 * time.Millisecond)
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println("program start")
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defer println("program end")
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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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err := SX127X_SPI.Configure(machine.SPIConfig{
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Frequency: 100000,
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SCK: SX127X_PIN_SCK,
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SDO: SX127X_PIN_TX,
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SDI: SX127X_PIN_RX,
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})
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if err != nil {
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panic(err.Error())
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}
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dev := sx127x.NewLoRa(SX127X_SPI, SX127X_PIN_CS.Set, SX127X_PIN_RST.Set)
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cfg := sx127x.DefaultConfig(lora.Freq433_0M)
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err = dev.Configure(cfg)
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if err != nil {
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panic(err.Error())
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}
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randomU32, _ := dev.RandomU32()
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myName := fmt.Sprintf("user-%x", randomU32%0xffff)
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packet := []byte(myName + " says hello!")
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println("config success; sending messages as ", myName, "of length", len(packet))
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for {
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err = dev.Tx(packet)
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if err != nil {
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println("got error transmitting:", err.Error())
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} else {
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print(".")
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}
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time.Sleep(2 * time.Second)
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// err = dev.Configure(cfg)
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// if err != nil {
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// println("got error configuring:", err.Error())
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// }
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}
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}
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