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drivers/input/nunchuck.c: Add Nintendo Wii Nunchuck driver

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This commit is contained in:
Alan Carvalho de Assis 2017-11-28 12:10:06 -06:00 committed by Gregory Nutt
parent da7f0542f0
commit 5a814a773d
9 changed files with 845 additions and 33 deletions
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19
drivers/input/Kconfig
View File

@ -426,3 +426,22 @@ config AJOYSTICK_NPOLLWAITERS
depends on !DISABLE_POLL
endif # AJOYSTICK
config INPUT_NUNCHUCK
bool "Nintendo Wii Nunchuck Joystick (White Model)"
default n
select I2C
---help---
Enable a Nintendo Wii Nunchuck joystick upper half driver. The
nunchuck joystick provides position data as an integer value.The
analog positional data may also be accompanied by discrete
button data.
if INPUT_NUNCHUCK
config NUNCHUCK_NPOLLWAITERS
int "Max Number of Poll Waiters"
default 2
depends on !DISABLE_POLL
endif # INPUT_NUNCHUCK

4
drivers/input/Make.defs
View File

@ -91,6 +91,10 @@ ifeq ($(CONFIG_AJOYSTICK),y)
CSRCS += ajoystick.c
endif
ifeq ($(CONFIG_INPUT_NUNCHUCK),y)
CSRCS += nunchuck.c
endif
# Include input device driver build support
DEPPATH += --dep-path input

619
drivers/input/nunchuck.c Normal file
View File

@ -0,0 +1,619 @@
/****************************************************************************
* drivers/input/nunchuck.c
*
* Copyright (C) 2017 Gregory Nutt. All rights reserved.
* Copyright (C) 2017 Alan Carvalho de Assis. All rights reserved.
* Author: Alan Carvalho de Assis <acassis@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/* This file provides a driver for a Nintendo Wii Nunchuck joystick device.
* The nunchuck joystick provides X/Y positional data as integer values.
* The analog positional data may also be accompanied by discrete button data.
*
* The nunchuck joystick driver exports a standard character driver
* interface. By convention, the nunchuck joystick is registered as an input
* device at /dev/nunchuckN where N uniquely identifies the driver instance.
*/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdbool.h>
#include <string.h>
#include <poll.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/kmalloc.h>
#include <nuttx/signal.h>
#include <nuttx/random.h>
#include <nuttx/fs/fs.h>
#include <nuttx/i2c/i2c_master.h>
#include <nuttx/input/nunchuck.h>
#include <nuttx/irq.h>
/****************************************************************************
* Private Types
****************************************************************************/
/* This structure provides the state of one nunchuck joystick driver */
struct nunchuck_dev_s
{
FAR struct i2c_master_s *i2c_dev; /* I2C interface connected to Nunchuck */
nunchuck_buttonset_t nck_sample; /* Last sampled button states */
sem_t nck_exclsem; /* Supports exclusive access to the device */
/* The following is a singly linked list of open references to the
* joystick device.
*/
FAR struct nunchuck_open_s *nck_open;
};
/* This structure describes the state of one open joystick driver instance */
struct nunchuck_open_s
{
/* Supports a singly linked list */
FAR struct nunchuck_open_s *nck_flink;
/* The following will be true if we are closing */
volatile bool nck_closing;
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* Semaphore helpers */
static inline int nunchuck_takesem(sem_t *sem);
#define nunchuck_givesem(s) nxsem_post(s);
/* Character driver methods */
static int nunchuck_open(FAR struct file *filep);
static int nunchuck_close(FAR struct file *filep);
static ssize_t nunchuck_read(FAR struct file *filep, FAR char *buffer,
size_t buflen);
static int nunchuck_ioctl(FAR struct file *filep, int cmd,
unsigned long arg);
/* I2C Helpers */
static int nunchuck_i2c_read(FAR struct nunchuck_dev_s *priv,
FAR uint8_t *regval, int len);
static int nunchuck_i2c_write(FAR struct nunchuck_dev_s *priv,
uint8_t const *data, int len);
static int nunchuck_sample(FAR struct nunchuck_dev_s *priv,
FAR struct nunchuck_sample_s *buffer);
/****************************************************************************
* Private Data
****************************************************************************/
static const struct file_operations nunchuck_fops =
{
nunchuck_open, /* open */
nunchuck_close, /* close */
nunchuck_read, /* read */
NULL, /* write */
NULL, /* seek */
nunchuck_ioctl /* ioctl */
#ifndef CONFIG_DISABLE_POLL
, NULL /* poll */
#endif
#ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS
, NULL /* unlink */
#endif
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: nunchuck_i2c_read
****************************************************************************/
static int nunchuck_i2c_read(FAR struct nunchuck_dev_s *priv,
FAR uint8_t *regval, int len)
{
struct i2c_config_s config;
int ret = -1;
/* Set up the I2C configuration */
config.frequency = NUNCHUCK_I2C_FREQ;
config.address = NUNCHUCK_ADDR;
config.addrlen = 7;
/* Read "len" bytes from regaddr */
ret = i2c_read(priv->i2c_dev, &config, regval, len);
if (ret < 0)
{
ierr ("i2c_read failed: %d\n", ret);
return ret;
}
return OK;
}
/****************************************************************************
* Name: nunchuck_i2c_write
****************************************************************************/
static int nunchuck_i2c_write(FAR struct nunchuck_dev_s *priv,
uint8_t const *data, int len)
{
struct i2c_config_s config;
int ret;
/* Set up the I2C configuration */
config.frequency = NUNCHUCK_I2C_FREQ;
config.address = NUNCHUCK_ADDR;
config.addrlen = 7;
/* Write the data */
ret = i2c_write(priv->i2c_dev, &config, data, len);
if (ret < 0)
{
ierr("ERROR: i2c_write failed: %d\n", ret);
}
return ret;
}
static int nunchuck_sample(FAR struct nunchuck_dev_s *priv,
FAR struct nunchuck_sample_s *buffer)
{
uint8_t cmd[2];
uint8_t data[6];
static bool initialized = false;
if (!initialized)
{
/* Start device */
cmd[0] = 0x40;
cmd[1] = 0x00;
nunchuck_i2c_write(priv, cmd, 2);
/* Delay 20ms */
nxsig_usleep(20*1000);
initialized = true;
}
/* Prepare to read */
cmd[0] = 0x00;
nunchuck_i2c_write(priv, cmd, 1);
/* Wait */
nxsig_usleep(1000);
/* Read data */
nunchuck_i2c_read(priv, &data[0], 1);
/* Wait */
nxsig_usleep(1000);
/* Wait */
nxsig_usleep(1000);
nunchuck_i2c_read(priv, &data[1], 1);
/* Wait */
nxsig_usleep(1000);
nunchuck_i2c_read(priv, &data[2], 1);
/* Wait */
nxsig_usleep(1000);
nunchuck_i2c_read(priv, &data[3], 1);
/* Wait */
nxsig_usleep(1000);
nunchuck_i2c_read(priv, &data[4], 1);
/* Wait */
nxsig_usleep(1000);
nunchuck_i2c_read(priv, &data[5], 1);
/* Save the sample */
buffer->js_x = (uint16_t) data[0];
buffer->js_y = (uint16_t) data[1];
buffer->acc_x = (uint16_t) data[2];
buffer->acc_y = (uint16_t) data[3];
buffer->acc_z = (uint16_t) data[4];
buffer->nck_buttons = (uint8_t) ((data[5]+1) & 0x03);
iinfo("X: %03d | Y: %03d | AX: %03d AY: %03d AZ: %03d | B: %d\n",
data[0], data[1], data[2], data[3], data[4], ((data[5]+1) & 0x03));
return OK;
}
/****************************************************************************
* Name: nunchuck_takesem
****************************************************************************/
static inline int nunchuck_takesem(sem_t *sem)
{
int ret;
/* Take a count from the semaphore, possibly waiting */
ret = nxsem_wait(sem);
/* The only case that an error should occur here is if the wait
* was awakened by a signal
*/
DEBUGASSERT(ret == OK || ret == -EINTR);
return ret;
}
/****************************************************************************
* Name: nunchuck_open
****************************************************************************/
static int nunchuck_open(FAR struct file *filep)
{
FAR struct inode *inode;
FAR struct nunchuck_dev_s *priv;
FAR struct nunchuck_open_s *opriv;
int ret;
DEBUGASSERT(filep && filep->f_inode);
inode = filep->f_inode;
DEBUGASSERT(inode->i_private);
priv = (FAR struct nunchuck_dev_s *)inode->i_private;
/* Get exclusive access to the driver structure */
ret = nunchuck_takesem(&priv->nck_exclsem);
if (ret < 0)
{
ierr("ERROR: nunchuck_takesem failed: %d\n", ret);
return ret;
}
/* Allocate a new open structure */
opriv = (FAR struct nunchuck_open_s *)kmm_zalloc(sizeof(struct nunchuck_open_s));
if (!opriv)
{
ierr("ERROR: Failled to allocate open structure\n");
ret = -ENOMEM;
goto errout_with_sem;
}
/* Attach the open structure to the device */
opriv->nck_flink = priv->nck_open;
priv->nck_open = opriv;
/* Attach the open structure to the file structure */
filep->f_priv = (FAR void *)opriv;
ret = OK;
errout_with_sem:
nunchuck_givesem(&priv->nck_exclsem);
return ret;
}
/****************************************************************************
* Name: nunchuck_close
****************************************************************************/
static int nunchuck_close(FAR struct file *filep)
{
FAR struct inode *inode;
FAR struct nunchuck_dev_s *priv;
FAR struct nunchuck_open_s *opriv;
FAR struct nunchuck_open_s *curr;
FAR struct nunchuck_open_s *prev;
irqstate_t flags;
bool closing;
int ret;
DEBUGASSERT(filep && filep->f_priv && filep->f_inode);
opriv = filep->f_priv;
inode = filep->f_inode;
DEBUGASSERT(inode->i_private);
priv = (FAR struct nunchuck_dev_s *)inode->i_private;
/* Handle an improbable race conditions with the following atomic test
* and set.
*
* This is actually a pretty feeble attempt to handle this. The
* improbable race condition occurs if two different threads try to
* close the joystick driver at the same time. The rule: don't do
* that! It is feeble because we do not really enforce stale pointer
* detection anyway.
*/
flags = enter_critical_section();
closing = opriv->nck_closing;
opriv->nck_closing = true;
leave_critical_section(flags);
if (closing)
{
/* Another thread is doing the close */
return OK;
}
/* Get exclusive access to the driver structure */
ret = nunchuck_takesem(&priv->nck_exclsem);
if (ret < 0)
{
ierr("ERROR: nunchuck_takesem failed: %d\n", ret);
return ret;
}
/* Find the open structure in the list of open structures for the device */
for (prev = NULL, curr = priv->nck_open;
curr && curr != opriv;
prev = curr, curr = curr->nck_flink);
DEBUGASSERT(curr);
if (!curr)
{
ierr("ERROR: Failed to find open entry\n");
ret = -ENOENT;
goto errout_with_exclsem;
}
/* Remove the structure from the device */
if (prev)
{
prev->nck_flink = opriv->nck_flink;
}
else
{
priv->nck_open = opriv->nck_flink;
}
/* And free the open structure */
kmm_free(opriv);
ret = OK;
errout_with_exclsem:
nunchuck_givesem(&priv->nck_exclsem);
return ret;
}
/****************************************************************************
* Name: nunchuck_read
****************************************************************************/
static ssize_t nunchuck_read(FAR struct file *filep, FAR char *buffer,
size_t len)
{
FAR struct inode *inode;
FAR struct nunchuck_dev_s *priv;
int ret;
DEBUGASSERT(filep && filep->f_inode);
inode = filep->f_inode;
DEBUGASSERT(inode->i_private);
priv = (FAR struct nunchuck_dev_s *)inode->i_private;
/* Make sure that the buffer is sufficiently large to hold at least one
* complete sample.
*
* REVISIT: Should also check buffer alignment.
*/
if (len < sizeof(struct nunchuck_sample_s))
{
ierr("ERROR: buffer too small: %lu\n", (unsigned long)len);
return -EINVAL;
}
/* Get exclusive access to the driver structure */
ret = nunchuck_takesem(&priv->nck_exclsem);
if (ret < 0)
{
ierr("ERROR: nunchuck_takesem failed: %d\n", ret);
return ret;
}
/* Read and return the current state of the joystick buttons */
ret = nunchuck_sample(priv, (FAR struct nunchuck_sample_s *)buffer);
if (ret >= 0)
{
ret = sizeof(struct nunchuck_sample_s);
}
nunchuck_givesem(&priv->nck_exclsem);
return (ssize_t)ret;
}
/****************************************************************************
* Name: nunchuck_ioctl
****************************************************************************/
static int nunchuck_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
{
FAR struct inode *inode;
FAR struct nunchuck_dev_s *priv;
int ret;
DEBUGASSERT(filep && filep->f_priv && filep->f_inode);
inode = filep->f_inode;
DEBUGASSERT(inode->i_private);
priv = (FAR struct nunchuck_dev_s *)inode->i_private;
/* Get exclusive access to the driver structure */
ret = nunchuck_takesem(&priv->nck_exclsem);
if (ret < 0)
{
ierr("ERROR: nunchuck_takesem failed: %d\n", ret);
return ret;
}
/* Handle the ioctl command */
ret = -EINVAL;
switch (cmd)
{
/* Command: NUNCHUCKIOC_SUPPORTED
* Description: Report the set of button events supported by the hardware;
* Argument: A pointer to writeable integer value in which to return the
* set of supported buttons.
* Return: Zero (OK) on success. Minus one will be returned on failure
* with the errno value set appropriately.
*/
case NUNCHUCKIOC_SUPPORTED:
{
FAR int *supported = (FAR int *)((uintptr_t)arg);
if (supported)
{
*supported = (NUNCHUCK_BUTTON_Z_BIT | NUNCHUCK_BUTTON_C_BIT);
ret = OK;
}
}
break;
default:
ierr("ERROR: Unrecognized command: %ld\n", cmd);
ret = -ENOTTY;
break;
}
nunchuck_givesem(&priv->nck_exclsem);
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nunchuck_register
*
* Description:
* Register the composite character driver as the specific device.
*
* Input Parameters:
* devname - The name of the analog joystick device to be registers.
* This should be a string of the form "/priv/nunchuckN" where N is the
* minor device number.
* i2c - An instance of the platform-specific I2C connected to Nunchuck.
*
* Returned Values:
* Zero (OK) is returned on success. Otherwise a negated errno value is
* returned to indicate the nature of the failure.
*
****************************************************************************/
int nunchuck_register(FAR const char *devname, FAR struct i2c_master_s *i2c)
{
FAR struct nunchuck_dev_s *priv;
int ret;
iinfo("Enter\n");
DEBUGASSERT(devname && i2c);
/* Allocate a new nunchuck driver instance */
priv = (FAR struct nunchuck_dev_s *)
kmm_zalloc(sizeof(struct nunchuck_dev_s));
if (!priv)
{
ierr("ERROR: Failed to allocate device structure\n");
return -ENOMEM;
}
/* Save the i2c device */
priv->i2c_dev = i2c;
/* Initialize the new nunchuck driver instance */
nxsem_init(&priv->nck_exclsem, 0, 1);
/* And register the nunchuck driver */
ret = register_driver(devname, &nunchuck_fops, 0666, priv);
if (ret < 0)
{
ierr("ERROR: register_driver failed: %d\n", ret);
goto errout_with_priv;
}
return OK;
errout_with_priv:
nxsem_destroy(&priv->nck_exclsem);
kmm_free(priv);
return ret;
}

56
include/nuttx/fs/ioctl.h
View File

@ -72,31 +72,33 @@
#define _WLCIOCBASE (0x1300) /* Wireless modules ioctl character driver commands */
#define _CFGDIOCBASE (0x1400) /* Config Data device (app config) ioctl commands */
#define _TCIOCBASE (0x1500) /* Timer ioctl commands */
#define _DJOYBASE (0x1600) /* Discrete joystick ioctl commands */
#define _AJOYBASE (0x1700) /* Analog joystick ioctl commands */
#define _PIPEBASE (0x1800) /* FIFO/pipe ioctl commands */
#define _RTCBASE (0x1900) /* RTC ioctl commands */
#define _RELAYBASE (0x1a00) /* Relay devices ioctl commands */
#define _CANBASE (0x1b00) /* CAN ioctl commands */
#define _BTNBASE (0x1c00) /* Button ioctl commands */
#define _ULEDBASE (0x1d00) /* User LED ioctl commands */
#define _ZCBASE (0x1e00) /* Zero Cross ioctl commands */
#define _LOOPBASE (0x1f00) /* Loop device commands */
#define _MODEMBASE (0x2000) /* Modem ioctl commands */
#define _I2CBASE (0x2100) /* I2C driver commands */
#define _SPIBASE (0x2200) /* SPI driver commands */
#define _GPIOBASE (0x2300) /* GPIO driver commands */
#define _CLIOCBASE (0x2400) /* Contactless modules ioctl commands */
#define _USBCBASE (0x2500) /* USB-C controller ioctl commands */
#define _MAC802154BASE (0x2600) /* 802.15.4 MAC ioctl commands */
#define _PWRBASE (0x2700) /* Power-related ioctl commands */
#define _FBIOCBASE (0x2800) /* Frame buffer character driver ioctl commands */
#define _JOYBASE (0x1600) /* Joystick ioctl commands */
#define _PIPEBASE (0x1700) /* FIFO/pipe ioctl commands */
#define _RTCBASE (0x1800) /* RTC ioctl commands */
#define _RELAYBASE (0x1900) /* Relay devices ioctl commands */
#define _CANBASE (0x1a00) /* CAN ioctl commands */
#define _BTNBASE (0x1b00) /* Button ioctl commands */
#define _ULEDBASE (0x1c00) /* User LED ioctl commands */
#define _ZCBASE (0x1d00) /* Zero Cross ioctl commands */
#define _LOOPBASE (0x1e00) /* Loop device commands */
#define _MODEMBASE (0x1f00) /* Modem ioctl commands */
#define _I2CBASE (0x2000) /* I2C driver commands */
#define _SPIBASE (0x2100) /* SPI driver commands */
#define _GPIOBASE (0x2200) /* GPIO driver commands */
#define _CLIOCBASE (0x2300) /* Contactless modules ioctl commands */
#define _USBCBASE (0x2400) /* USB-C controller ioctl commands */
#define _MAC802154BASE (0x2500) /* 802.15.4 MAC ioctl commands */
#define _PWRBASE (0x2600) /* Power-related ioctl commands */
#define _FBIOCBASE (0x2700) /* Frame buffer character driver ioctl commands */
/* boardctl() commands share the same number space */
#define _BOARDBASE (0xff00) /* boardctl commands */
/* Macros used to manage ioctl commands */
/* Macros used to manage ioctl commands. IOCTL commands are divided into
* groups of 256 commands for major, broad functional areas. That makes
* them a limited resource.
*/
#define _IOC_MASK (0x00ff)
#define _IOC_TYPE(cmd) ((cmd) & ~_IOC_MASK)
@ -335,17 +337,11 @@
#define _TCIOCVALID(c) (_IOC_TYPE(c)==_TCIOCBASE)
#define _TCIOC(nr) _IOC(_TCIOCBASE,nr)
/* Discrete joystick driver ioctl definitions *******************************/
/* (see nuttx/include/input/djoystick.h */
/* Joystick driver ioctl definitions ***************************************/
/* Discrete Joystick (see nuttx/include/input/djoystick.h */
#define _DJOYIOCVALID(c) (_IOC_TYPE(c)==_DJOYBASE)
#define _DJOYIOC(nr) _IOC(_DJOYBASE,nr)
/* Analog joystick driver ioctl definitions *********************************/
/* (see nuttx/include/input/ajoystick.h */
#define _AJOYIOCVALID(c) (_IOC_TYPE(c)==_AJOYBASE)
#define _AJOYIOC(nr) _IOC(_AJOYBASE,nr)
#define _JOYIOCVALID(c) (_IOC_SMASK(c)==_JOYBASE)
#define _JOYIOC(nr) _IOC(_JOYBASE,nr)
/* FIFOs and pipe driver ioctl definitions **********************************/

4
include/nuttx/input/ajoystick.h
View File

@ -1,7 +1,7 @@
/****************************************************************************
* include/nuttx/input/ajoystick.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Copyright (C) 2014, 2017 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -56,7 +56,7 @@
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/fs/ioctl.h>
#include <nuttx/input/ioctl.h>
/****************************************************************************
* Pre-processor Definitions

2
include/nuttx/input/djoystick.h
View File

@ -56,7 +56,7 @@
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/fs/ioctl.h>
#include <nuttx/input/ioctl.h>
/****************************************************************************
* Pre-processor Definitions

76
include/nuttx/input/ioctl.h Normal file
View File

@ -0,0 +1,76 @@
/************************************************************************************
* include/nuttx/input/ioctl.h
*
* Copyright (C) 2015-2016 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __INCLUDE_NUTTX_INPUT_IOCTL_H
#define __INCLUDE_NUTTX_INPUT_IOCTL_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/fs/ioctl.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define _JOYIOC_MASK (0x001f)
#define _JOYIOC_TYPE(cmd) ((cmd) & ~_JOYIOC_MASK)
#define _JOYIOC_NBR(cmd) ((cmd) & _JOYIOC_MASK)
/* Discrete Joystick (see nuttx/include/input/djoystick.h */
#define _DJOYBASE (_JOYBASE | 0x0000)
#define _DJOYIOCVALID(c) (_JOYIOC_MASK(c)==_DJOYBASE)
#define _DJOYIOC(nr) _IOC(_DJOYBASE,nr)
/* Analog Joystick (see nuttx/include/input/ajoystick.h */
#define _AJOYBASE (_JOYBASE | 0x0020)
#define _AJOYIOCVALID(c) (_JOYIOC_MASK(c)==_AJOYBASE)
#define _AJOYIOC(nr) _IOC(_AJOYBASE,nr)
/* Nunchuck Wii controller */
#define _NUNCKIOCBASE (_JOYBASE | 0x0040)
#define _NUNCHUCKIOCVALID(c) (_IOC_TYPE(c)==_NUNCKIOCBASE)
#define _NUNCHUCKIOC(nr) _IOC(_NUNCKIOCBASE,nr)
#endif /* __INCLUDE_NUTTX_INPUT_IOCTL_H */

92
include/nuttx/input/nunchuck.h Normal file
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@ -0,0 +1,92 @@
/************************************************************************************
* include/nuttx/input/nunchuck.h
*
* Copyright (C) 2015-2016 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __INCLUDE_NUTTX_INPUT_NUNCHUCK_H
#define __INCLUDE_NUTTX_INPUT_NUNCHUCK_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/input/ioctl.h>
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/* These definitions provide the meaning of all of the bits that may be
* reported in the djoy_buttonset_t bitset.
*/
#define NUNCHUCK_BUTTON_Z_BIT (0)
#define NUNCHUCK_BUTTON_C_BIT (1)
/* Command: NUNCHUCKIOC_SUPPORTED
* Description: Report the set of button events supported by the hardware;
* Argument: A pointer to writeable integer value in which to return the
* set of supported buttons.
* Return: Zero (OK) on success. Minus one will be returned on failure
* with the errno value set appropriately.
*/
#define AJOYIOC_SUPPORTED _NUNCHUCKIOC(0x0000)
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: nunchuck_register
*
* Description:
* Register the composite character driver as the specific device.
*
* Input Parameters:
* devname - The name of the analog joystick device to be registers.
* This should be a string of the form "/priv/nunchuckN" where N is the
* minor device number.
* i2c - An instance of the platform-specific I2C connected to Nunchuck.
*
* Returned Values:
* Zero (OK) is returned on success. Otherwise a negated errno value is
* returned to indicate the nature of the failure.
*
****************************************************************************/
struct i2c_master_s;
int nunchuck_register(FAR const char *devname, FAR struct i2c_master_s *i2c);
#endif /* __INCLUDE_NUTTX_INPUT_NUNCHUCK_H */

6
include/sys/ioctl.h
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@ -58,6 +58,12 @@
#endif
#endif /* CONFIG_NET */
#ifdef CONFIG_INPUT
/* Include input driver IOCTL definitions */
# include <nuttx/input/ioctl.h>
#endif
#ifdef CONFIG_DRIVERS_WIRELESS
/* Include wireless character driver IOCTL definitions */