Mikroelektronika MIKROE-350 データシート

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- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

sub function Ow_Read() as byte

Data read from an external device over the OneWire bus.

Reads one byte of data via the OneWire bus.

Devices compliant with the Dallas OneWire protocol.

Global variables : 

- 

OW_Bit_Read:

OneWire read line 

- 

OW_Bit_Write:

OneWire write line. 

- 

OW_Bit_Direction:

Direction of the OneWire pin 

must be defined before using this function.

// OneWire pinout
dim OW_Bit_Read as sbit at PINB.B2    
dim OW_Bit_Write as sbit at PORTB.B2
dim OW_Bit_Direction as sbit at DDRB.B2
// end of OneWire pinout

' Read a byte from the One-Wire Bus
dim read_data  as byte
...
read_data = Ow_Read()