- Name:
- owout
- Syntax:
-
OWOUT pin,mode,(variable,variable...)
Pin - is a variable/constant which specifies the pin to use.
Mode - is a variable/ constant which selects the mode.
Each bit of 'mode' has a separate function:
Each bit of 'mode' has a separate function:
Bit 0 reset pulse sent before data Bit 1 reset pulse sent after data Bit 2 bit mode (receive 1 bit rather than 8 bits (1 byte)) Bit 3 apply strong pullup after data For convenience these predefined constants may be used:
0 ownoreset 4 ownoreset_bit 1 owresetbefore 5 owresetbefore_bit 2 owresetafter 6 owresetafter_bit 3 owresetboth 7 owresetboth_bit Variables(s) - contain the data to be sent.
- Description:
-
This command is used to write data to a one-wire device.
Write data to one-wire device connected to an input pin, with optional reset pulses before and after the write. Use of one-wire parts is covered in more detail in the separate 'One-Wire Tutorial' datasheet.
Some devices, such as the DS18B20 temperature sensor, may require a strong pullup after a byte is written.
This command cannot be used on the following pins due to silicon restrictions:
20X2 C.6 = fixed input
- Applies To:
- 20X2, 28X1, 28X2, 40X1, 40X2
- See Also:
- Related Create:
- Share:
-
- Print:
-
Read raw temperature value from DS18B20
This achieves a similar function to the readtemp12 command
- Code Example:
-
main: owout C.1,%1001,($CC,$44) ; send ‘reset’ then ‘skip ROM’ then ‘convert’ then apply ‘pullup’ pause 750 ; wait 750ms with strong pullup owout C.1,%0001,($CC,$BE) ; send ‘reset’ then ‘skip ROM’ then ‘read temp’ command owin C.1,%0000,(b0,b1) ; read in result sertxd (#w0,CR,LF) ; transmit value goto main
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