mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-08-08 17:03:39 +00:00
Ron Evans
106 lines
2.3 KiB
Go
106 lines
2.3 KiB
Go
// This is a sensor hub that uses a ESP8266/ESP32 running on the device UART1.
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// It creates a UDP "server" you can use to get info to/from your computer via the microcontroller.
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//
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// In other words:
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// Your computer <--> UART0 <--> MCU <--> UART1 <--> ESP8266 <--> INTERNET
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//
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package main
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import (
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"machine"
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"time"
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"tinygo.org/x/drivers/espat"
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"tinygo.org/x/drivers/espat/net"
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)
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// change actAsAP to true to act as an access point instead of connecting to one.
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const actAsAP = false
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// access point info
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const ssid = "YOURSSID"
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const pass = "YOURPASS"
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// change these to connect to a different UART or pins for the ESP8266/ESP32
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var (
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uart = machine.UART1
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tx = machine.D10
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rx = machine.D11
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adaptor *espat.Device
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)
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func main() {
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uart.Configure(machine.UARTConfig{TX: tx, RX: rx})
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// Init esp8266
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adaptor = espat.New(uart)
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adaptor.Configure()
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readyled := machine.LED
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readyled.Configure(machine.PinConfig{Mode: machine.PinOutput})
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readyled.High()
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// first check if connected
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if adaptor.Connected() {
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println("Connected to wifi adaptor.")
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adaptor.Echo(false)
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if actAsAP {
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provideAP()
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} else {
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connectToAP()
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}
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} else {
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println("Unable to connect to wifi adaptor.")
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return
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}
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// now make UDP connection
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laddr := &net.UDPAddr{Port: 2222}
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println("Loading UDP listener...")
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conn, _ := net.ListenUDP("UDP", laddr)
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println("Waiting for data...")
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data := make([]byte, 50)
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blink := true
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for {
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n, _ := conn.Read(data)
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if n > 0 {
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println(string(data[:n]))
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conn.Write([]byte("hello back\r\n"))
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}
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blink = !blink
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if blink {
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readyled.High()
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} else {
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readyled.Low()
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}
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time.Sleep(500 * time.Millisecond)
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}
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// Right now this code is never reached. Need a way to trigger it...
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println("Disconnecting UDP...")
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conn.Close()
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println("Done.")
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}
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// connect to access point
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func connectToAP() {
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println("Connecting to wifi network...")
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adaptor.SetWifiMode(espat.WifiModeClient)
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adaptor.ConnectToAP(ssid, pass, 10)
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println("Connected.")
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println(adaptor.GetClientIP())
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}
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// provide access point
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func provideAP() {
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println("Starting wifi network as access point:")
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println(ssid)
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adaptor.SetWifiMode(espat.WifiModeAP)
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adaptor.SetAPConfig(ssid, pass, 7, espat.WifiAPSecurityWPA2_PSK)
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println("Ready.")
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println(adaptor.GetAPIP())
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}
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