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//
// rhctl
//
// Copyright (C) 2009-2016 Christian Pointner <equinox@helsinki.at>
//
// This file is part of rhctl.
//
// rhctl is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// any later version.
//
// rhctl is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with rhctl. If not, see <http://www.gnu.org/licenses/>.
//
package main
import (
"bufio"
"syscall"
"github.com/schleibinger/sio"
)
type Baudrate uint32
const (
B1200 Baudrate = syscall.B1200
B2400 = syscall.B2400
B4800 = syscall.B4800
B9600 = syscall.B9600
B19200 = syscall.B19200
B38400 = syscall.B38400
B57600 = syscall.B57600
B115200 = syscall.B115200
)
type SerialPort struct {
port *sio.Port
rx <-chan string
tx chan<- string
}
func SerialRead(c chan<- string, port *sio.Port) {
scanner := bufio.NewScanner(port)
scanner.Split(bufio.ScanLines)
for scanner.Scan() {
if err := scanner.Err(); err != nil {
panic(err.Error())
}
data := scanner.Text()
if len(data) == 0 {
continue
}
c <- string(data)
}
}
func SerialWrite(c <-chan string, port *sio.Port, newline string) {
for data := range c {
port.Write([]byte(data + newline))
}
port.Close()
}
func SerialOpenAndHandle(device string, speed Baudrate, newline string) (port *SerialPort, err error) {
port = &SerialPort{}
if port.port, err = sio.Open(device, uint32(speed)); err != nil {
return
}
tx := make(chan string, 1)
rx := make(chan string, 20)
go SerialRead(rx, port.port)
go SerialWrite(tx, port.port, newline)
port.rx = rx
port.tx = tx
return
}
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