mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-07-26 10:38:41 +00:00
Scott Feldman
06dd60fba2
* Add wifi driver comboat for Elecrow W5 rp2040 and rp2350 devices Combo-AT driver uses AT command set to talk to onboard rtl8720d wifi device. The driver supports UDP/TCP/TLS clients in Wifi STA mode. Support for UDP/TCP servers is not supported, currently. https://aithinker-combo-guide.readthedocs.io/en/latest/docs/instruction/index.html https://aithinker-combo-guide.readthedocs.io/en/latest/docs/command-set/index.html https://aithinker-combo-guide.readthedocs.io/en/latest/docs/command-examples/index.html * Add wifi driver comboat for Elecrow W5 rp2040 and rp2350 devices Combo-AT driver uses AT command set to talk to onboard rtl8720d wifi device. The driver supports UDP/TCP/TLS clients in Wifi STA mode. Support for UDP/TCP servers is not supported, currently. https://aithinker-combo-guide.readthedocs.io/en/latest/docs/instruction/index.html https://aithinker-combo-guide.readthedocs.io/en/latest/docs/command-set/index.html https://aithinker-combo-guide.readthedocs.io/en/latest/docs/command-examples/index.html * switch to comboat_fw build tag for examples/net's that work with comboat driver
116 lines
2.3 KiB
Go
116 lines
2.3 KiB
Go
// This is an example of an NTP client.
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//
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// It creates a UDP connection to request the current time and parse the
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// response from a NTP server. The system time is set to NTP time.
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//go:build ninafw || wioterminal || challenger_rp2040 || comboat_fw
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package main
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import (
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"fmt"
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"io"
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"log"
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"machine"
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"net"
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"runtime"
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"time"
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"tinygo.org/x/drivers/netlink"
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"tinygo.org/x/drivers/netlink/probe"
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)
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var (
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ssid string
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pass string
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// IP address of the server aka "hub". Replace with your own info.
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ntpHost string = "0.pool.ntp.org:123"
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)
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const NTP_PACKET_SIZE = 48
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var response = make([]byte, NTP_PACKET_SIZE)
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func main() {
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waitSerial()
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link, _ := probe.Probe()
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err := link.NetConnect(&netlink.ConnectParams{
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Ssid: ssid,
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Passphrase: pass,
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})
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if err != nil {
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log.Fatal(err)
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}
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conn, err := net.Dial("udp", ntpHost)
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if err != nil {
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log.Fatal(err)
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}
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println("Requesting NTP time...")
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t, err := getCurrentTime(conn)
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if err != nil {
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log.Fatal(fmt.Sprintf("Error getting current time: %v", err))
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} else {
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message("NTP time: %v", t)
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}
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conn.Close()
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link.NetDisconnect()
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runtime.AdjustTimeOffset(-1 * int64(time.Since(t)))
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for {
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message("Current time: %v", time.Now())
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time.Sleep(time.Minute)
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}
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}
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// Wait for user to open serial console
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func waitSerial() {
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for !machine.Serial.DTR() {
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time.Sleep(100 * time.Millisecond)
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}
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}
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func getCurrentTime(conn net.Conn) (time.Time, error) {
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if err := sendNTPpacket(conn); err != nil {
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return time.Time{}, err
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}
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n, err := conn.Read(response)
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if err != nil && err != io.EOF {
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return time.Time{}, err
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}
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if n != NTP_PACKET_SIZE {
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return time.Time{}, fmt.Errorf("expected NTP packet size of %d: %d", NTP_PACKET_SIZE, n)
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}
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return parseNTPpacket(response), nil
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}
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func sendNTPpacket(conn net.Conn) error {
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var request = [48]byte{
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0xe3,
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}
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_, err := conn.Write(request[:])
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return err
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}
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func parseNTPpacket(r []byte) time.Time {
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// the timestamp starts at byte 40 of the received packet and is four bytes,
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// this is NTP time (seconds since Jan 1 1900):
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t := uint32(r[40])<<24 | uint32(r[41])<<16 | uint32(r[42])<<8 | uint32(r[43])
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const seventyYears = 2208988800
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return time.Unix(int64(t-seventyYears), 0)
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}
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func message(format string, args ...interface{}) {
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println(fmt.Sprintf(format, args...), "\r")
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}
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