======ow_first====== WMPRO >= 1.0 WMMEGA FW >= 2.0 Initiate a OneWire bus scan and return the address of the first device found ====Description==== mixed ow_first ( ) This function starts a new OneWire bus scan and provides the address of the first device found. Currently only DS18B20 temperature sensors are detectable. ====Parameters==== None ====Return Values==== An array of 8 elements containing the unique OneWire address. Returns int 0 if no devices were detected. ====Example====

====See Also==== [[ow_next()]] - Return the address of the next OneWire device found (after an ow_first) [[ow_read()]] - Read a byte from the OneWire bus [[ow_read_temp()]] - Read a temperature from a device on the OneWire bus [[ow_reset()]] - Reset the OneWire bus [[ow_write()]] - Write a byte to the OneWire bus [[sprintf()]] - Return a formatted string