Module digital - Processes for manipulating digital pins
Processes for manipulating digital pins.
Index
-
Constant
INPUT- Symbolic constant for setting data direction registers to input -
Data type
LEVEL- Symbolic constant for setting the level of a digital pin -
Constant
OUTPUT- Symbolic constant for setting data direction registers to output -
Process
digital.input- Read digital levels on external level interrupt pins -
Process
digital.mode- Sets the Data Direction Register of the given pin (sets the flow of data) to either INPUT or OUTPUT -
Process
digital.output- Set digital levels on a pin -
Process
digital.read- Reads the digital state of a pin -
Process
digital.write- Sets the digital state of a pin to either HIGH or LOW
Declarations
digital.module:32Data type LEVEL
DATA TYPE LEVEL
Symbolic constant for setting the level of a digital pin.
Can be
-
VAL LEVEL HIGHor -
VAL LEVEL LOW
digital.module:63Constant INPUT
VAL INT INPUT
Symbolic constant for setting data direction registers to input.
digital.module:65Constant OUTPUT
VAL INT OUTPUT
Symbolic constant for setting data direction registers to output.
digital.module:72Process digital.write
PROC digital.write (VAL INT board.pin, VAL LEVEL state)
Sets the digital state of a pin to either HIGH or LOW.
Parameters:
VAL INT |
board.pin |
The board pin to be set. |
VAL LEVEL |
state |
The state to set -- Either HIGH or LOW. |
digital.module:88Process digital.read
PROC digital.read (VAL INT board.pin, RESULT LEVEL state)
Reads the digital state of a pin. Either HIGH or LOW.
Parameters:
VAL INT |
board.pin |
The board pin to be read. |
RESULT LEVEL |
state |
The pin's current state -- Either HIGH or LOW. |
digital.module:106Process digital.mode
PROC digital.mode (VAL INT board.pin, mode)
Sets the Data Direction Register of the given pin (sets the flow of data) to either INPUT or OUTPUT.
Parameters:
VAL INT |
board.pin |
The board pin to set the direction of. |
VAL INT |
mode |
The mode to be set. Either INPUT or OUTPUT. |
digital.module:124Process digital.output
PROC digital.output (VAL INT board.pin, CHAN LEVEL in?)
Set digital levels on a pin. Reads LEVEL values (LOW or HIGH) on the input channel, and sets the value of the specified pin accordingly.
Parameters:
VAL INT |
board.pin |
The Arduino pin number |
CHAN LEVEL |
in |
Pin levels (LOW or HIGH) |
digital.module:143Process digital.input
PROC digital.input (VAL INT board.pin, CHAN LEVEL out!)
Read digital levels on external level interrupt pins. This procedure will output a LEVEL (either LOW or HIGH) whenever the pin changes value.
Parameters:
VAL INT |
board.pin |
The pin number (pins 2 and 3 are safe choices). |
CHAN LEVEL |
out |
The LEVEL, output when the pin changes level. |