OWRDBYTE Pin, ByteVar

Function
Reads one byte (eight bits) from a 1-Wire device.

• Pin  is any SX I/O pin (RA.0 .. RA.7, RB.0 .. RB.7, RC.0 .. RC.7, RD.0 .. RD.7, RE.0 .. RE.7).
• ByteVar is any byte variable that will hold the 1-Wire read value.

Quick Facts

	All SX Models
Special Notes	The DQ pin (specified by Pin) must have a 4.7 kΩ pull-up resister.
	1-Wire commands require a FREQ setting of 4 MHz or higher.
Receive Rate	~12 kBits/Sec (not including Reset)

Explanation
Some 1-Wire transactions require reading data from the device. A bit is read from the 1-Wire device byte generating a brief pulse on the DQ line, then reading the line within 15 µS of the falling edge (see OWRDBIT for details). This is called a "Read Slot." The OWRDBYTE instruction generates eight 1-Wire Read Slot sequences and returns the value in ByteVar.

Related instructions: OWRESET, OWRDBIT, OWWRBIT, and OWWRBYTE