func (jst *PinGeneral) Readonce(pin *driverlayer.DriverArg, timeout int) ([]byte, error) {
utils.Debug("PinGeneral received Readonce request")
s, _ := hex.DecodeString("1b49")
t, _ := hex.DecodeString("83")
utils.Debug("PinGeneral send readonce pi %x", s)
b, e := driverlayer.WritePortAndReadWithTerminator(pin.Port, pin.Baud, s, []byte{0x03}, timeout, t)
if e == nil {
utils.Debug("begin process received data %x", b)
b = b[1 : len(b)-1]
utils.Debug("after process received data %x", b)
}
return b, e
}
//向com口中写入任意数据即可
func (jst *SDMsf) Read(pin *driverlayer.DriverArg, read_type int, timeout int) ([]byte, error) {
utils.Debug("SDMsf received read request")
if read_type < 1 || read_type > 3 {
utils.Error("not implementd read type %d,expected 1<=mode<=3", read_type)
return nil, CARDNO_NOT_FORMULAED
}
var s []byte
switch read_type {
case 1:
s, _ = hex.DecodeString("1b301b5d")
break
case 2:
s, _ = hex.DecodeString("1b301b545d")
break
case 3:
s, _ = hex.DecodeString("1b301b425d")
break
}
b, e := driverlayer.WritePortAndReadWithTerminator(pin.Port, pin.Baud, s, []byte{0x3F}, timeout, nil)
if e != nil {
return nil, nil
} else {
var epos = 0
if b[0] != 0x1b || b[1] != 0x73 {
utils.Error("SDMsf data %s,left data not standard,expected %s", b, "1b73")
return nil, CARDNO_NOT_FORMULAED
}
for i := 0; i < len(b); i++ {
if b[i] == 0x41 && read_type == 3 {
b[i] = '|'
}
if b[i] == 0x3f {
epos = i
}
}
b = b[2 : epos+1]
return b, nil
}
}