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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-10-20 15:17:19 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-10-20 15:17:19 +0000 |
commit | 736ac8982a3388fd6e5f96f0587e05b8c09bfd61 (patch) | |
tree | dea74b55e662725c7095c9d9feb6283f50ec4ddd /nuttx/include | |
parent | dbdf7cb3ae33224d45b5185d15d756508c11a246 (diff) | |
download | px4-firmware-736ac8982a3388fd6e5f96f0587e05b8c09bfd61.tar.gz px4-firmware-736ac8982a3388fd6e5f96f0587e05b8c09bfd61.tar.bz2 px4-firmware-736ac8982a3388fd6e5f96f0587e05b8c09bfd61.zip |
Add MAX11802 touchscreeen driver from Petteri Aimonen
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5237 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/include')
-rw-r--r-- | nuttx/include/nuttx/compiler.h | 9 | ||||
-rw-r--r-- | nuttx/include/nuttx/input/max11802.h | 175 |
2 files changed, 182 insertions, 2 deletions
diff --git a/nuttx/include/nuttx/compiler.h b/nuttx/include/nuttx/compiler.h index 1e0af4382..bbb23d01d 100644 --- a/nuttx/include/nuttx/compiler.h +++ b/nuttx/include/nuttx/compiler.h @@ -87,11 +87,16 @@ # define packed_struct __attribute__ ((packed)) -/* GCC does not support the reentrant or naked attributes */ +/* GCC does not support the reentrant attribute */ # define reentrant_function -# define naked_function +/* The naked attribute informs GCC that the programmer will take care of + * the function prolog and epilog. + */ + +# define naked_function __attribute__ ((naked,no_instrument_function)) + /* The inline_function attribute informs GCC that the function should always * be inlined, regardless of the level of optimization. The noinline_function * indicates that the function should never be inlined. diff --git a/nuttx/include/nuttx/input/max11802.h b/nuttx/include/nuttx/input/max11802.h new file mode 100644 index 000000000..3d03bdd11 --- /dev/null +++ b/nuttx/include/nuttx/input/max11802.h @@ -0,0 +1,175 @@ +/**************************************************************************** + * include/nuttx/input/max11802.h + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Authors: Gregory Nutt <gnutt@nuttx.org> + * Petteri Aimonen <jpa@nx.mail.kapsi.fi> + * + * References: + * "Low-Power, Ultra-Small Resistive Touch-Screen Controllers + * with I2C/SPI Interface" Maxim IC, Rev 3, 10/2010 + * + * 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_MAX11802_H +#define __INCLUDE_NUTTX_INPUT_MAX11802_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/spi.h> +#include <stdbool.h> +#include <nuttx/irq.h> + +#if defined(CONFIG_INPUT) && defined(CONFIG_INPUT_MAX11802) + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ +/* Configuration ************************************************************/ +/* SPI Frequency. Default: 100KHz */ + +#ifndef CONFIG_MAX11802_FREQUENCY +# define CONFIG_MAX11802_FREQUENCY 100000 +#endif + +/* Maximum number of threads than can be waiting for POLL events */ + +#ifndef CONFIG_MAX11802_NPOLLWAITERS +# define CONFIG_MAX11802_NPOLLWAITERS 2 +#endif + +#ifndef CONFIG_MAX11802_SPIMODE +# define CONFIG_MAX11802_SPIMODE SPIDEV_MODE0 +#endif + +/* Thresholds */ + +#ifndef CONFIG_MAX11802_THRESHX +# define CONFIG_MAX11802_THRESHX 12 +#endif + +#ifndef CONFIG_MAX11802_THRESHY +# define CONFIG_MAX11802_THRESHY 12 +#endif + +/* Check for some required settings. This can save the user a lot of time + * in getting the right configuration. + */ + +#ifdef CONFIG_DISABLE_SIGNALS +# error "Signals are required. CONFIG_DISABLE_SIGNALS must not be selected." +#endif + +#ifndef CONFIG_SCHED_WORKQUEUE +# error "Work queue support required. CONFIG_SCHED_WORKQUEUE must be selected." +#endif + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +/* A reference to a structure of this type must be passed to the MAX11802 + * driver. This structure provides information about the configuration + * of the MAX11802 and provides some board-specific hooks. + * + * Memory for this structure is provided by the caller. It is not copied + * by the driver and is presumed to persist while the driver is active. The + * memory must be writable because, under certain circumstances, the driver + * may modify frequency or X plate resistance values. + */ + +struct max11802_config_s +{ + /* Device characterization */ + + uint32_t frequency; /* SPI frequency */ + + /* IRQ/GPIO access callbacks. These operations all hidden behind + * callbacks to isolate the MAX11802 driver from differences in GPIO + * interrupt handling by varying boards and MCUs. If possible, + * interrupts should be configured on both rising and falling edges + * so that contact and loss-of-contact events can be detected. + * + * attach - Attach the MAX11802 interrupt handler to the GPIO interrupt + * enable - Enable or disable the GPIO interrupt + * clear - Acknowledge/clear any pending GPIO interrupt + * pendown - Return the state of the pen down GPIO input + */ + + int (*attach)(FAR struct max11802_config_s *state, xcpt_t isr); + void (*enable)(FAR struct max11802_config_s *state, bool enable); + void (*clear)(FAR struct max11802_config_s *state); + bool (*pendown)(FAR struct max11802_config_s *state); +}; + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +#ifdef __cplusplus +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +/**************************************************************************** + * Name: max11802_register + * + * Description: + * Configure the MAX11802 to use the provided SPI device instance. This + * will register the driver as /dev/inputN where N is the minor device + * number + * + * Input Parameters: + * spi - An SPI driver instance + * config - Persistent board configuration data + * minor - The input device minor number + * + * Returned Value: + * Zero is returned on success. Otherwise, a negated errno value is + * returned to indicate the nature of the failure. + * + ****************************************************************************/ + +EXTERN int max11802_register(FAR struct spi_dev_s *spi, + FAR struct max11802_config_s *config, + int minor); + +#undef EXTERN +#ifdef __cplusplus +} +#endif + +#endif /* CONFIG_INPUT && CONFIG_INPUT_MAX11802 */ +#endif /* __INCLUDE_NUTTX_INPUT_MAX11802_H */ |