hsk_io.h File Reference

HSK I/O headers. More...

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Macros
#define	IO_PORT_IN_INIT(port, pins)
	Initializes a set of port pins as inputs. More...
#define	IO_PORT_ON_GND   0
	Bit mask to set the logical 1 to GND level for all selected pins. More...
#define	IO_PORT_ON_HIGH   0xff
	Bit mask to set the logical 1 to high level for all selected pins. More...
#define	IO_PORT_GET(port, pins, on)
	Evaluates to a bit mask of logical pin states of a port. More...
#define	IO_PORT_STRENGTH_WEAK   0
	Bit mask to set weak drive strength for all selected pins. More...
#define	IO_PORT_STRENGTH_STRONG   0xff
	Bit mask to set strong drive strength for all selected pins. More...
#define	IO_PORT_DRAIN_DISABLE   0
	Bit mask to disable drain mode for all selected pins. More...
#define	IO_PORT_DRAIN_ENABLE   0xff
	Bit mask to enable drain mode for all selected pins. More...
#define	IO_PORT_OUT_INIT(port, pins, strength, drain, on, set)
	Initializes a set of port pins as outputs. More...
#define	IO_PORT_OUT_SET(port, pins, on, set)
	Set a set of output port pins. More...
#define	IO_PORT_PULL_DISABLE   0
	Bit mask to disable pull up/down for all selected pins. More...
#define	IO_PORT_PULL_ENABLE   0xff
	Bit mask to enable pull up/down for all selected pins. More...
#define	IO_PORT_PULL_DOWN   0
	Bit mask to select pull down for all selected pins. More...
#define	IO_PORT_PULL_UP   0xff
	Bit mask to select pull up for all selected pins. More...
#define	IO_PORT_PULL_INIT(port, pins, pull, dir)
	Sets the pull-up/-down properties of port pins. More...
#define	IO_VAR_SET(var, bits, on, set)
	Set a set of variable bits. More...
#define	IO_VAR_GET(var, bits, on)
	Evaluates to a bit mask of logical states of a variable. More...

Detailed Description

HSK I/O headers.

This file contains macro definitions to use and initialize I/O ports and variables bitwise.

All the macros take a port and a mask to select the affected pins. All operations are masked with the selected pins so it is safe to define 0xff (every bit 1) to activate a certain property.

Set and get macros take a bit field to define the value that represents the on or true state, so the logic code can always use a 1 for true/on.

The macros are grouped as:

• Input Port Access
• Output Port Access
• Variable Access

Author

kami

I/O Port Pull-Up/-Down Table

The device boots with all parallel ports configured as inputs. The following table lists the pins that come up with activated internal pull up:

Port\Bit	7	6	5	4	3	2	1	0
P0	1	1	x	x	x	1	x	x
P1	1	1	1	1	1	1	1	1
P3	x	1	x	x	x	x	x	x
P4	x	x	x	x	x	1	x	x
P5	1	1	1	1	1	1	1	1