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util.go
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util.go
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package serial
import (
"strconv"
"strings"
)
const (
DefaultPort = "COM1"
DefaultBaudRate = 9600
)
// COM1,9600,odd
func ParseConfigFromAddr(addr string) *Config {
cfg := &Config{
Name: DefaultPort,
Baud: DefaultBaudRate,
}
ss := strings.Split(addr, ",")
switch len(ss) {
case 1:
cfg.Name = ss[0]
case 2:
cfg.Name = ss[0]
cfg.Baud, _ = strconv.Atoi(ss[1])
case 3:
cfg.Name = ss[0]
cfg.Baud, _ = strconv.Atoi(ss[1])
cfg.Parity = parseParity(ss[2])
}
return cfg
}
func AddrFromConfig(cfg *Config) string {
ss := []string{
cfg.Name,
strconv.Itoa(cfg.Baud),
}
switch cfg.Parity {
case ParityEven:
ss = append(ss, "even")
case ParityOdd:
ss = append(ss, "odd")
case ParityMark:
ss = append(ss, "mark")
case ParitySpace:
ss = append(ss, "space")
}
return strings.Join(ss, ",")
}
func parseParity(s string) Parity {
switch strings.ToLower(s) {
case "o", "odd":
return ParityOdd
case "e", "even":
return ParityEven
case "m", "mark":
return ParityMark
case "s", "space":
return ParitySpace
default:
return ParityNone
}
}