simon
16bfbd1091
Refactor into version/clients subcommands with shared serial framing to list registered slaves from the master over UART. Co-authored-by: Cursor <cursoragent@cursor.com>
54 lines
1.0 KiB
Go
54 lines
1.0 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"log"
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"os"
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)
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const defaultBaud = 921600
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func usage() {
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fmt.Fprintf(os.Stderr, "usage: gotool -port /dev/ttyUSB0 <command>\n\n")
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fmt.Fprintf(os.Stderr, "commands:\n")
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fmt.Fprintf(os.Stderr, " version firmware version and git hash\n")
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fmt.Fprintf(os.Stderr, " clients registered ESP-NOW slaves on the master\n\n")
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flag.PrintDefaults()
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}
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func main() {
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portName := flag.String("port", "", "serial port (e.g. /dev/ttyUSB0)")
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baud := flag.Int("baud", defaultBaud, "UART baud rate")
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flag.Parse()
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if *portName == "" || flag.NArg() < 1 {
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usage()
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os.Exit(2)
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}
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cmd := flag.Arg(0)
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sp, err := openSerial(*portName, *baud)
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if err != nil {
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log.Fatalf("open serial: %v", err)
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}
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defer sp.Close()
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var runErr error
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switch cmd {
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case "version":
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runErr = runVersion(sp)
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case "clients", "client-info":
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runErr = runClients(sp)
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default:
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fmt.Fprintf(os.Stderr, "unknown command %q\n\n", cmd)
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usage()
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os.Exit(2)
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}
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if runErr != nil {
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log.Fatal(runErr)
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}
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}
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