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Diffstat (limited to 'nuttx/drivers/input/ads7843e.h')
| -rw-r--r-- | nuttx/drivers/input/ads7843e.h | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/nuttx/drivers/input/ads7843e.h b/nuttx/drivers/input/ads7843e.h deleted file mode 100644 index 6fd70d98b..000000000 --- a/nuttx/drivers/input/ads7843e.h +++ /dev/null @@ -1,179 +0,0 @@ -/******************************************************************************************** - * drivers/input/ads7843e.h - * - * Copyright (C) 2011-2012 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * References: - * "Touch Screen Controller, ADS7843," Burr-Brown Products from Texas - * Instruments, SBAS090B, September 2000, Revised May 2002" - * - * See also: - * "Low Voltage I/O Touch Screen Controller, TSC2046," Burr-Brown Products - * from Texas Instruments, SBAS265F, October 2002, Revised August 2007." - * - * "XPT2046 Data Sheet," Shenzhen XPTek Technology Co., Ltd, 2007 - * - * 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 __DRIVERS_INPUT_ADS7843E_H -#define __DRIVERS_INPUT_ADS7843E_H - -/******************************************************************************************** - * Included Files - ********************************************************************************************/ - -#include <nuttx/config.h> - -#include <stdint.h> -#include <semaphore.h> -#include <poll.h> -#include <wdog.h> -#include <nuttx/wqueue.h> - -#include <nuttx/spi.h> -#include <nuttx/clock.h> -#include <nuttx/input/ads7843e.h> - -/******************************************************************************************** - * Pre-Processor Definitions - ********************************************************************************************/ -/* Configuration ****************************************************************************/ -/* Reference counting is partially implemented, but not needed in the current design. */ - -#undef CONFIG_ADS7843E_REFCNT - -/* ADS7843E Interfaces *********************************************************************/ -/* ADS7843E command bit settings */ - -#define ADS7843E_CMD_PD0 (1 << 0) /* PD0 */ -#define ADS7843E_CMD_PD1 (1 << 1) /* PD1 */ -#define ADS7843E_CMD_DFR (1 << 2) /* SER/DFR */ -#define ADS7843E_CMD_EIGHT_BITS_MOD (1 << 3) /* Mode */ -#define ADS7843E_CMD_START (1 << 7) /* Start Bit */ -#define ADS7843E_CMD_SWITCH_SHIFT 4 /* Address setting */ - -/* ADS7843E Commands */ - -#define ADS7843_CMD_YPOSITION \ - ((1 << ADS7843E_CMD_SWITCH_SHIFT)|ADS7843E_CMD_START|ADS7843E_CMD_PD0|ADS7843E_CMD_PD1) -#define ADS7843_CMD_XPOSITION \ - ((5 << ADS7843E_CMD_SWITCH_SHIFT)|ADS7843E_CMD_START|ADS7843E_CMD_PD0|ADS7843E_CMD_PD1) -#define ADS7843_CMD_ENABPINIRQ \ - ((1 << ADS7843E_CMD_SWITCH_SHIFT)|ADS7843E_CMD_START) - -/* Driver support **************************************************************************/ -/* This format is used to construct the /dev/input[n] device driver path. It - * defined here so that it will be used consistently in all places. - */ - -#define DEV_FORMAT "/dev/input%d" -#define DEV_NAMELEN 16 - -/* Poll the pen position while the pen is down at this rate (50MS): */ - -#define ADS7843E_WDOG_DELAY ((50 + (MSEC_PER_TICK-1))/ MSEC_PER_TICK) - -/******************************************************************************************** - * Public Types - ********************************************************************************************/ - -/* This describes the state of one contact */ - -enum ads7843e_contact_3 -{ - CONTACT_NONE = 0, /* No contact */ - CONTACT_DOWN, /* First contact */ - CONTACT_MOVE, /* Same contact, possibly different position */ - CONTACT_UP, /* Contact lost */ -}; - -/* This structure describes the results of one ADS7843E sample */ - -struct ads7843e_sample_s -{ - uint8_t id; /* Sampled touch point ID */ - uint8_t contact; /* Contact state (see enum ads7843e_contact_e) */ - bool valid; /* True: x,y contain valid, sampled data */ - uint16_t x; /* Measured X position */ - uint16_t y; /* Measured Y position */ -}; - -/* This structure describes the state of one ADS7843E driver instance */ - -struct ads7843e_dev_s -{ -#ifdef CONFIG_ADS7843E_MULTIPLE - FAR struct ads7843e_dev_s *flink; /* Supports a singly linked list of drivers */ -#endif -#ifdef CONFIG_ADS7843E_REFCNT - uint8_t crefs; /* Number of times the device has been opened */ -#endif - uint8_t nwaiters; /* Number of threads waiting for ADS7843E data */ - uint8_t id; /* Current touch point ID */ - volatile bool penchange; /* An unreported event is buffered */ - uint16_t threshx; /* Thresholding X value */ - uint16_t threshy; /* Thresholding Y value */ - sem_t devsem; /* Manages exclusive access to this structure */ - sem_t waitsem; /* Used to wait for the availability of data */ - - FAR struct ads7843e_config_s *config; /* Board configuration data */ - FAR struct spi_dev_s *spi; /* Saved SPI driver instance */ - struct work_s work; /* Supports the interrupt handling "bottom half" */ - struct ads7843e_sample_s sample; /* Last sampled touch point data */ - WDOG_ID wdog; /* Poll the position while the pen is down */ - - /* The following is a list if poll structures of threads waiting for - * driver events. The 'struct pollfd' reference for each open is also - * retained in the f_priv field of the 'struct file'. - */ - -#ifndef CONFIG_DISABLE_POLL - struct pollfd *fds[CONFIG_ADS7843E_NPOLLWAITERS]; -#endif -}; - -/******************************************************************************************** - * Public Function Prototypes - ********************************************************************************************/ - -#ifdef __cplusplus -#define EXTERN extern "C" -extern "C" { -#else -#define EXTERN extern -#endif - -#undef EXTERN -#ifdef __cplusplus -} -#endif - -#endif /* __DRIVERS_INPUT_ADS7843E_H */ |