mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-08-11 02:13:42 +00:00
Olivier Fauchon
89 lines
1.9 KiB
Go
89 lines
1.9 KiB
Go
// Sends data with LoRa.
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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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"strconv"
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"time"
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"tinygo.org/x/drivers/lora/sx127x"
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)
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var loraConfig = sx127x.Config{
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Frequency: 868100000,
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SpreadingFactor: 12,
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Bandwidth: 125000,
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CodingRate: 6,
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TxPower: 17,
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}
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const (
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SPI_SCK_PIN = machine.PA5
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SPI_SDO_PIN = machine.PA7
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SPI_SDI_PIN = machine.PA6
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SPI_CS_PIN = machine.PB8
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SPI_RST_PIN = machine.PB9
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DIO0_PIN = machine.PA2
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UART_TX_PIN = machine.PA9
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UART_RX_PIN = machine.PA10
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)
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func main() {
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// Configure serial console
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machine.Serial.Configure(machine.UARTConfig{TX: UART_TX_PIN, RX: UART_RX_PIN, BaudRate: 115200})
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println("LoRa Sender Example")
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// Prepare GPIOS (SPI + DIO)
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machine.LED.Configure(machine.PinConfig{Mode: machine.PinOutput})
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SPI_CS_PIN.Configure(machine.PinConfig{Mode: machine.PinOutput})
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SPI_RST_PIN.Configure(machine.PinConfig{Mode: machine.PinOutput})
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DIO0_PIN.Configure(machine.PinConfig{Mode: machine.PinOutput})
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// Enable SPI
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machine.SPI0.Configure(machine.SPIConfig{
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SCK: SPI_SCK_PIN,
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SDO: SPI_SDO_PIN,
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SDI: SPI_SDI_PIN,
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Frequency: 500000,
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Mode: 0})
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// Create and Reset Lora driver
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loraRadio := sx127x.New(machine.SPI0, SPI_CS_PIN, SPI_RST_PIN)
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loraRadio.Reset()
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// Check module identification
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if loraRadio.GetVersion() != 0x12 {
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println("SX1276 module not found")
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for {
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}
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} else {
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println("Module version 0x12")
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}
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// Configure Lora settings (modulation, SF... etc )
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var err = loraRadio.SetupLora(loraConfig)
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if err != nil {
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fmt.Println(err)
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return
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}
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// Send a Lora packet every 5 sec
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println("Sending LoRa packets every 5 seconds...")
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for i := 0; ; i++ {
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var packet = "TinyGo LoRa Sender: " + strconv.Itoa(i)
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println("Sending:", packet)
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machine.LED.Low()
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time.Sleep(time.Millisecond * 150)
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machine.LED.High()
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loraRadio.TxLora([]byte(packet))
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time.Sleep(5000 * time.Millisecond)
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}
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}
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