Pin

Macros
#define	pin_quasi_bidiretional_init(port, port_pin)
	Init pin in in QUASI_BIDIRECTIONAL mode.
#define	pin_push_pull_init(port, port_pin)
	Init pin in in PUSH_PULL mode.
#define	pin_input_only_init(port, port_pin)
	Init pin in in INPUT_ONLY mode.
#define	pin_open_drain_init(port, port_pin)
	Init pin in in OPEN_DRAIN mode.
#define	is_pin_mode_quasi_bidiretional(port, port_pin)   ( ((port ## M1 & (1 << port_pin)) == 0) && ((port ## M0 & (1 << port_pin)) == 0 ) )
	Assert pin in quasy-bidirectional mode.
#define	is_pin_mode_push_pull(port, port_pin)   ( ((port ## M1 & (1 << port_pin)) == 0) && ((port ## M0 & (1 << port_pin)) != 0) )
	Assert pin in push-pull mode.
#define	is_pin_mode_input_only(port, port_pin)   ( ((port ## M1 & (1 << port_pin)) != 0) && ((port ## M0 & (1 << port_pin)) == 0) )
	Assert pin in input-only mode.
#define	is_pin_mode_open_drain(port, port_pin)   ( ((port ## M1 & (1 << port_pin)) != 0) && ((port ## M0 & (1 << port_pin)) != 0) )
	Assert pin in open-drain mode.
#define	pin_port_quasi_bidiretional_init(port)
	Set quasy-bidirectional mode for all port pins.
#define	pin_port_pull_push_init(port)
	Set pull-push mode for all port pins.
#define	pin_port_input_only_init(port)
	Set input-only mode for all port pins.
#define	pin_port_open_drain_init(port)
	Set open-drain mode for all port pins.

Detailed Description

Pin modes data structures and routines

Author

Michael Golovanov

Macro Definition Documentation

is_pin_mode_input_only

#define is_pin_mode_input_only	(		port,
			port_pin
	)		( ((port ## M1 & (1 << port_pin)) != 0) && ((port ## M0 & (1 << port_pin)) == 0) )

Assert pin in input-only mode.

Returns

true if pin in input-only mode, otherwise false

is_pin_mode_open_drain

#define is_pin_mode_open_drain	(		port,
			port_pin
	)		( ((port ## M1 & (1 << port_pin)) != 0) && ((port ## M0 & (1 << port_pin)) != 0) )

Assert pin in open-drain mode.

Returns

true if pin in open-drain mode, otherwise false

is_pin_mode_push_pull

#define is_pin_mode_push_pull	(		port,
			port_pin
	)		( ((port ## M1 & (1 << port_pin)) == 0) && ((port ## M0 & (1 << port_pin)) != 0) )

Assert pin in push-pull mode.

Returns

true if pin in push-pull mode, otherwise false

is_pin_mode_quasi_bidiretional

#define is_pin_mode_quasi_bidiretional	(		port,
			port_pin
	)		( ((port ## M1 & (1 << port_pin)) == 0) && ((port ## M0 & (1 << port_pin)) == 0 ) )

Assert pin in quasy-bidirectional mode.

Returns

true if pin in quasy-bidirectional mode, otherwise false

pin_input_only_init

#define pin_input_only_init	(		port,
			port_pin
	)

Value:

do {                                                            \
    bit_set(port ## M1, 1 << port_pin);                         \
    bit_clr(port ## M0, ~(1 << port_pin));                      \
} while(0)

Init pin in in INPUT_ONLY mode.

Input only output have high impedance

Set mode for pin in port. For example for pin P10 call this routine with P1, 0 arguments

Parameters

port	pin port for example P1, P3 and etc
port_pin	uint8_t pin mumber in port 0..7

pin_open_drain_init

#define pin_open_drain_init	(		port,
			port_pin
	)

Value:

do {                                                            \
    bit_set(port ## M1, 1 << port_pin);                         \
    bit_set(port ## M0, 1 << port_pin);                         \
} while(0)

Init pin in in OPEN_DRAIN mode.

internal pull-up resistors should be disabled and external pull-up resistors need to join.

Set mode for pin in port. For example for pin P10 call this routine with P1, 0 arguments

Parameters

port	pin port for example P1, P3 and etc
port_pin	uint8_t pin mumber in port 0..7

pin_port_input_only_init

#define pin_port_input_only_init

(

port

)

Value:

do {                                                \
    port ## M1 = 0xff;                              \
    port ## M0 = 0x00;                              \
} while(0)

Set input-only mode for all port pins.

Parameters

port	pin port for example P1, P3 and etc

pin_port_open_drain_init

#define pin_port_open_drain_init

(

port

)

Value:

do {                                                \
    port ## M1 = 0xff;                              \
    port ## M0 = 0xff;                              \
} while(0)

Set open-drain mode for all port pins.

Parameters

port	pin port for example P1, P3 and etc

pin_port_pull_push_init

#define pin_port_pull_push_init

(

port

)

Value:

do {                                               \
    port ## M1 = 0x00;                             \
    port ## M0 = 0xff;                             \
} while(0)

Set pull-push mode for all port pins.

Parameters

port	pin port for example P1, P3 and etc

pin_port_quasi_bidiretional_init

#define pin_port_quasi_bidiretional_init

(

port

)

Value:

do {                                                \
    port ## M1 = 0x00;                              \
    port ## M0 = 0x00;                              \
} while(0)

Set quasy-bidirectional mode for all port pins.

Parameters

port	pin port for example P1, P3 and etc

pin_push_pull_init

#define pin_push_pull_init	(		port,
			port_pin
	)

Value:

do {                                                            \
    bit_clr(port ## M1, ~(1 << port_pin));                      \
    bit_set(port ## M0, 1 << port_pin);                         \
} while(0)

Init pin in in PUSH_PULL mode.

Push-pull output(strong pull-up output，current can be up to 20mA, resistors need to be added to restrict current

Set mode for pin in port. For example for pin P10 call this routine with P1, 0 arguments

Parameters

port	pin port for example P1, P3 and etc
port_pin	uint8_t pin mumber in port 0..7

pin_quasi_bidiretional_init

#define pin_quasi_bidiretional_init	(		port,
			port_pin
	)

Value:

do {                                                            \
    bit_clr(port ## M1, ~(1 << port_pin));                      \
    bit_clr(port ## M0, ~(1 << port_pin));                      \
} while(0)

Init pin in in QUASI_BIDIRECTIONAL mode.

QUASI_BIDIRECTIONAL mode is default pin mode and set after MCU power on

Set mode for pin in port. For example for pin P10 call this routine with P1, 0 arguments

Parameters

port	pin port for example P1, P3 and etc
port_pin	uint8_t pin mumber in port 0..7