vexdigital.c File Reference

Digital port driver. More...

#include "ch.h"
#include "hal.h"
#include "vex.h"

Functions
void	vexDigitalModeSet (tVexDigitalPin pin, tVexDigitalMode mode)
	Set digital port mode. More...
tVexDigitalMode	vexDigitalModeGet (tVexDigitalPin pin)
	Set digital port mode. More...
void	vexDigitalPinSet (tVexDigitalPin pin, tVexDigitalState state)
	Set digital pin state. More...
tVexDigitalState	vexDigitalPinGet (tVexDigitalPin pin)
	Get digital pin state. More...
void	vexDigitalIntrSet (tVexDigitalPin pin)
	Set digital pin to cause interrupt. More...
void	vexDigitalIntrRun ()
	Enable any digital pin interrupts. More...
int32_t	vexDigitalIntrCountGet (tVexDigitalPin pin)
	Get the interrupt count for a given digital pin. More...

Variables
ioDef	vexioDefinition [kVexDigital_Num]
	definition of a digital IO pin More...

Detailed Description

Digital port driver.

Function Documentation

void vexDigitalModeSet	(	tVexDigitalPin	pin,
		tVexDigitalMode	mode
	)

Set digital port mode.

Parameters

[in]	pin	The pin to set the new mode on
[in]	mode	kVexDigitalInput or kVexDigitalOutput

Change the type of a digital IO port All ports are initially initialized to be INPUTs unless the board.h file is changed (not recommended)

tVexDigitalMode vexDigitalModeGet

(

tVexDigitalPin

pin)

Set digital port mode.

Parameters

[in]

pin

The pin to get the mode for

Returns

the mode for the given pin

void vexDigitalPinSet	(	tVexDigitalPin	pin,
		tVexDigitalState	state
	)

Set digital pin state.

Parameters

[in]	pin	The pin to set the new state on
[in]	state	kVexDigitalLow or kVexDigitalHigh

Set a digital pin to a value, high or low. If the pin is an input then this enables the pullup or pulldown resistor.

Examples:

vexuser.c.

tVexDigitalState vexDigitalPinGet

(

tVexDigitalPin

pin)

Get digital pin state.

Parameters

[in]

pin

The pin to get the state of

Read the value of a digital pin, if the pin is a digital output then the output value is returned.

Examples:

vexdefault.c.

void vexDigitalIntrSet

(

tVexDigitalPin

pin)

Set digital pin to cause interrupt.

Parameters

[in]

pin

The pin

This is used for testing at present, the interrupt just increments a counter

void vexDigitalIntrRun

(

void

)

Enable any digital pin interrupts.

int32_t vexDigitalIntrCountGet

(

tVexDigitalPin

pin)

Get the interrupt count for a given digital pin.

Parameters

[in]

pin

The pin

This is used for testing at present, the interrupt just increments a counter

Variable Documentation

ioDef vexioDefinition[kVexDigital_Num]

Initial value:

= {
        {VEX_DIGIO_1_PORT,   VEX_DIGIO_1_PAD,  kVexDigitalInput, -1 },
        {VEX_DIGIO_2_PORT,   VEX_DIGIO_2_PAD,  kVexDigitalInput, -1 },
        {VEX_DIGIO_3_PORT,   VEX_DIGIO_3_PAD,  kVexDigitalInput, -1 },
        {VEX_DIGIO_4_PORT,   VEX_DIGIO_4_PAD,  kVexDigitalInput, -1 },
        {VEX_DIGIO_5_PORT,   VEX_DIGIO_5_PAD,  kVexDigitalInput, -1 },
        {VEX_DIGIO_6_PORT,   VEX_DIGIO_6_PAD,  kVexDigitalInput, -1 },
        {VEX_DIGIO_7_PORT,   VEX_DIGIO_7_PAD,  kVexDigitalInput, -1 },
        {VEX_DIGIO_8_PORT,   VEX_DIGIO_8_PAD,  kVexDigitalInput, -1 },
        {VEX_DIGIO_9_PORT,   VEX_DIGIO_9_PAD,  kVexDigitalInput, -1 },
        {VEX_DIGIO_10_PORT,  VEX_DIGIO_10_PAD, kVexDigitalInput, -1 },
        {VEX_DIGIO_11_PORT,  VEX_DIGIO_11_PAD, kVexDigitalInput, -1 },
        {VEX_DIGIO_12_PORT,  VEX_DIGIO_12_PAD, kVexDigitalInput, -1 }
}

definition of a digital IO pin

This data structure is used to correlate a digital port(pin) number on the cortex with the port/pad pair on the STM32.