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deadprogram
141 lines
3.1 KiB
Go
141 lines
3.1 KiB
Go
// This example opens a TCP connection using a device with WiFiNINA firmware
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// and sends some data, for the purpose of testing speed and connectivity.
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//
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// You can open a server to accept connections from this program using:
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//
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// nc -w 5 -lk 8080
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//
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package main
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import (
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"bytes"
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"fmt"
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"machine"
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"time"
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"tinygo.org/x/drivers/net"
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"tinygo.org/x/drivers/wifinina"
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)
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// access point info
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const ssid = ""
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const pass = ""
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// IP address of the server aka "hub". Replace with your own info.
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const serverIP = ""
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// these are the default pins for the Arduino Nano33 IoT.
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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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// these are the default pins for the Arduino Nano33 IoT.
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uart = machine.UART2
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tx = machine.NINA_TX
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rx = machine.NINA_RX
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spi = machine.NINA_SPI
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// this is the ESP chip that has the WIFININA firmware flashed on it
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adaptor *wifinina.Device
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)
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var buf = &bytes.Buffer{}
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func main() {
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uart.Configure(machine.UARTConfig{TX: tx, RX: rx})
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// Configure SPI for 8Mhz, Mode 0, MSB First
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spi.Configure(machine.SPIConfig{
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Frequency: 8 * 1e6,
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SDO: machine.NINA_SDO,
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SDI: machine.NINA_SDI,
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SCK: machine.NINA_SCK,
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})
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adaptor = wifinina.New(spi,
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machine.NINA_CS,
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machine.NINA_ACK,
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machine.NINA_GPIO0,
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machine.NINA_RESETN)
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adaptor.Configure()
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connectToAP()
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for {
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sendBatch()
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time.Sleep(500 * time.Millisecond)
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}
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println("Done.")
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}
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func sendBatch() {
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// make TCP connection
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ip := net.ParseIP(serverIP)
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raddr := &net.TCPAddr{IP: ip, Port: 8080}
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laddr := &net.TCPAddr{Port: 8080}
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message("---------------\r\nDialing TCP connection")
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conn, err := net.DialTCP("tcp", laddr, raddr)
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for ; err != nil; conn, err = net.DialTCP("tcp", laddr, raddr) {
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message(err.Error())
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time.Sleep(5 * time.Second)
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}
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n := 0
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w := 0
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start := time.Now()
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// send data
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message("Sending data")
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for i := 0; i < 1000; i++ {
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buf.Reset()
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fmt.Fprint(buf,
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"\r---------------------------- i == ", i, " ----------------------------"+
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"\r---------------------------- i == ", i, " ----------------------------")
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if w, err = conn.Write(buf.Bytes()); err != nil {
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println("error:", err.Error(), "\r")
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continue
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}
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n += w
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}
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buf.Reset()
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ms := time.Now().Sub(start).Milliseconds()
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fmt.Fprint(buf, "\nWrote ", n, " bytes in ", ms, " ms\r\n")
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message(buf.String())
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if _, err := conn.Write(buf.Bytes()); err != nil {
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println("error:", err.Error(), "\r")
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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 TCP...")
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conn.Close()
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}
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// connect to access point
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func connectToAP() {
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time.Sleep(2 * time.Second)
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message("Connecting to " + ssid)
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adaptor.SetPassphrase(ssid, pass)
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for st, _ := adaptor.GetConnectionStatus(); st != wifinina.StatusConnected; {
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message("Connection status: " + st.String())
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time.Sleep(1 * time.Second)
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st, _ = adaptor.GetConnectionStatus()
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}
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message("Connected.")
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time.Sleep(2 * time.Second)
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ip, _, _, err := adaptor.GetIP()
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for ; err != nil; ip, _, _, err = adaptor.GetIP() {
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message(err.Error())
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time.Sleep(1 * time.Second)
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}
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message(ip.String())
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}
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func message(msg string) {
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println(msg, "\r")
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}
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