func (this *ZIOBoardDevice) readDHT22(pin byte) (value se.ValueMap, err error) {
valuestr, err := this.board.Send([]byte{CMD_READ_DHT22, pin})
if err != nil {
return
}
log.Println("readDHT22", valuestr, err)
values := strings.Split(valuestr, ",")
if len(values) > 1 {
value = se.NewValueMap(values[1])
value["temp"] = values[1]
value["hum"] = values[0]
} else {
value = se.NewValueMap("novalue")
}
return
}
func (this *ZIOBoardDevice) GetValue(address string) (value se.ValueMap, err error) {
value = se.NewValueMap("")
// if !this.OK() {
// err = fmt.Errorf("arduino device %s is in error state. %s", address, value)
// return
// }
if pin, ok := this.pins[address]; ok {
if pin.mode == MODE_INPUT {
if pin.chType == "dht22" {
value, err = this.readDHT22(pin.pin)
return
}
}
}
return
}
func (this *FirmataDevice) GetValue(address string) (se.ValueMap, error) {
return se.NewValueMap(""), nil
}