mirror of
https://github.com/apache/nuttx.git
synced 2026-06-06 16:50:55 +08:00
Beginning of an SMTPE11 touchscreen/IO expander driver
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4700 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
@@ -2708,4 +2708,6 @@
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position, not an offset.
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* graphics/nxtk/nxtk_drawframe.c: Framed windows are now drawn in three
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colors (instead of just two).
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* drivers/input/stmpe11_*: Beginning of a driver to support STMicro STMPE11
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IO Expander and touchscreen driver.
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@@ -47,6 +47,10 @@ ifeq ($(CONFIG_INPUT_ADS7843E),y)
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CSRCS += ads7843e.c
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endif
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ifeq ($(CONFIG_INPUT_STMPE11),y)
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CSRCS += stmpe11_base.c
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endif
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# Include input device driver build support
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DEPPATH += --dep-path input
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+117
-10
@@ -44,28 +44,135 @@
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* Included Files
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********************************************************************************************/
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#include <nuttx/config.h>
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#include <semaphore.h>
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#include <nuttx/wqueue.h>
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#include <nuttx/input/stmpe11.h>
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#if defined(CONFIG_INPUT) && defined(CONFIG_INPUT_STMPE11)
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/********************************************************************************************
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* Pre-Processor Definitions
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********************************************************************************************/
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/* Configuration ****************************************************************************/
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/* Reference counting is partially implemented, but not needed in the current design.
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*/
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#undef CONFIG_STMPE11_REFCNT
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/* No support for the SPI interface yet */
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#ifdef CONFIG_STMPE11_SPI
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# error "Only the STMPE11 I2C interface is supported by this driver"
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#endif
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/* Driver support ***************************************************************************/
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/* This format is used to construct the /dev/input[n] device driver path. It defined here
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* so that it will be used consistently in all places.
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*/
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#define DEV_FORMAT "/dev/input%d"
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#define DEV_NAMELEN 16
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/********************************************************************************************
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* Public Types
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********************************************************************************************/
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/* This describes the state of one contact */
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enum stmpe11_contact_3
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{
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CONTACT_NONE = 0, /* No contact */
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CONTACT_DOWN, /* First contact */
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CONTACT_MOVE, /* Same contact, possibly different position */
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CONTACT_UP, /* Contact lost */
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};
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/* This structure describes the results of one STMPE11 sample */
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struct stmpe11_sample_s
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{
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uint8_t id; /* Sampled touch point ID */
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uint8_t contact; /* Contact state (see enum stmpe11_contact_e) */
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uint16_t x; /* Measured X position */
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uint16_t y; /* Measured Y position */
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uint16_t z; /* Measured Z position */
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};
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/* This structure represents the state of the SMTPE11 driver */
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struct stmpe11_dev_s
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{
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#ifdef CONFIG_STMPE11_MULTIPLE
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FAR struct stmpe11_dev_s *flink; /* Supports a singly linked list of drivers */
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#endif
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#ifdef CONFIG_STMPE11_REFCNT
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uint8_t crefs; /* Number of times the device has been opened */
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#endif
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uint8_t nwaiters; /* Number of threads waiting for STMPE11 data */
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uint8_t inuse; /* SMTPE11 pins in use */
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uint8_t id; /* Current touch point ID (TSC only) */
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uint8_t minor; /* Touchscreen minor device number (TSC only) */
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volatile bool penchange; /* An unreported event is buffered (TSC only) */
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sem_t devsem; /* Manages exclusive access to this structure */
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sem_t waitsem; /* Used to wait for the availability of data */
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uint32_t threshx; /* Thresholded X value (TSC only) */
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uint32_t threshy; /* Thresholded Y value (TSC only) */
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#ifdef CONFIG_STMPE11_SPI
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FAR struct spi_dev_s *spi; /* Saved SPI driver instance */
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#else
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FAR struct i2c_dev_s *i2c; /* Saved I2C driver instance */
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#endif
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FAR struct stmpe11_config_s *config; /* Board configuration data (TSC only) */
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struct work_s work; /* Supports the interrupt handling "bottom half" */
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struct stmpe11_sample_s sample; /* Last sampled touch point data (TSC only) */
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/* The following is a list if poll structures of threads waiting for
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* driver events. The 'struct pollfd' reference for each open is also
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* retained in the f_priv field of the 'struct file'.
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*/
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#ifndef CONFIG_DISABLE_POLL
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struct pollfd *fds[CONFIG_STMPE11_NPOLLWAITERS];
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#endif
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};
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/********************************************************************************************
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* Public Function Prototypes
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********************************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C" {
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#else
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#define EXTERN extern
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#endif
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/********************************************************************************************
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* Name: stmpe11_getreg8
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*
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* Description:
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* Read from an 8-bit STMPE11 register
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*
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********************************************************************************************/
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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static uint8_t stmpe11_getreg8(FAR struct stmpe11_dev_s *priv, uint8_t regaddr);
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/********************************************************************************************
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* Name: stmpe11_putreg8
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*
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* Description:
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* Write a value to an 8-bit STMPE11 register
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*
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********************************************************************************************/
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void stmpe11_putreg8(FAR struct stmpe11_dev_s *priv, uint8_t regaddr, uint8_t regval);
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/********************************************************************************************
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* Name: stmpe11_getreg16
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*
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* Description:
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* Read 16-bits of data from an STMPE-11 register
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*
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********************************************************************************************/
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uint16_t stmpe11_getreg16(FAR struct stmpe11_dev_s *priv, uint8_t regaddr);
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#endif /* CONFIG_INPUT && CONFIG_INPUT_STMPE11 */
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#endif /* __DRIVERS_INPUT_STMPE11_H */
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@@ -0,0 +1,366 @@
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/****************************************************************************
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* drivers/input/stmpe11_base.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* References:
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* "STMPE811 S-Touch® advanced resistive touchscreen controller with 8-bit
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* GPIO expander," Doc ID 14489 Rev 6, CD00186725, STMicroelectronics"
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/input/stmpe11.h>
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#include "stmpe11.h"
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#if defined(CONFIG_INPUT) && defined(CONFIG_INPUT_STMPE11)
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* If only a single STMPE11 device is supported, then the driver state
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* structure may as well be pre-allocated.
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*/
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#ifndef CONFIG_STMPE11_MULTIPLE
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static struct stmpe11_dev_s g_stmpe11;
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/* Otherwise, we will need to maintain allocated driver instances in a list */
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#else
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static struct stmpe11_dev_s *g_stmpe11list;
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stmpe11_checkid
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*
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* Description:
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* Read and verify the STMPE11 chip ID
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*
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****************************************************************************/
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static int stmpe11_checkid(FAR struct stmpe11_dev_s *priv)
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{
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uint16_t devid = 0;
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/* Read device ID */
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devid = stmpe11_getreg8(priv, STMPE11_CHIP_ID);
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devid = (uint32_t)(devid << 8);
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devid |= (uint32_t)stmpe11_getreg8(priv, STMPE11_CHIP_ID+1);
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ivdbg("devid: %04x\n", devid);
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if (devid != (uint16_t)CHIP_ID)
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{
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/* ID is not Correct */
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return -ENODEV;
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}
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return OK;
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}
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/****************************************************************************
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* Name: stmpe11_reset
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*
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* Description:
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* Reset the STMPE11
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*
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****************************************************************************/
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static void stmpe11_reset(FAR struct stmpe11_dev_s *priv)
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{
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/* Power Down the STMPE11 */
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stmpe11_putreg8(priv, STMPE11_SYS_CTRL1, SYS_CTRL1_SOFTRESET);
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/* Wait a bit */
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up_mdelay(20);
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/* Then power on again. All registers will be in their reset state. */
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stmpe11_putreg8(priv, STMPE11_SYS_CTRL1, 0);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stmpe11_instantiate
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*
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* Description:
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* Instantiate and configure the STMPE11 device driver to use the provided
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* I2C or SPIdevice instance.
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*
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* Input Parameters:
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* dev - An I2C or SPI driver instance
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* config - Persistant board configuration data
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*
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* Returned Value:
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* A non-zero handle is returned on success. This handle may then be used
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* to configure the STMPE11 driver as necessary. A NULL handle value is
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* returned on failure.
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*
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****************************************************************************/
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#ifdef CONFIG_STMPE11_SPI
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STMPE11_HANDLE stmpe11_instantiate(FAR struct spi_dev_s *dev,
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FAR struct stmpe11_config_s *config)
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#else
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STMPE11_HANDLE stmpe11_instantiate(FAR struct i2c_dev_s *dev,
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FAR struct stmpe11_config_s *config)
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#endif
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{
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FAR struct stmpe11_dev_s *priv;
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int ret;
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/* On entry the following is assumed:
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*
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* I2C initialization ready
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* GPIO pins already configured.
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*/
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/* Allocate the device state structure */
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#ifdef CONFIG_STMPE11_MULTIPLE
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priv = (FAR struct stmpe11_dev_s *)kzalloc(sizeof(struct stmpe11_dev_s));
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if (!priv)
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{
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||||
return -ENOMEM;
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||||
}
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|
||||
/* And save the device structure in the list of STMPE11 so that we can find it later */
|
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priv->flink = g_stmpe11list;
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||||
g_stmpe11list = priv;
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||||
#else
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||||
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/* Use the one-and-only STMPE11 driver instance */
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priv = &g_stmpe11;
|
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#endif
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||||
|
||||
/* Initialize the device state structure */
|
||||
|
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#ifdef CONFIG_STMPE11_SPI
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priv->spi = dev;
|
||||
#else
|
||||
priv->i2c = dev;
|
||||
#endif
|
||||
|
||||
/* Read and verify the STMPE11 chip ID */
|
||||
|
||||
ret = stmpe11_checkid(priv);
|
||||
if (ret < 0)
|
||||
{
|
||||
#ifdef CONFIG_STMPE11_MULTIPLE
|
||||
kfree(priv);
|
||||
#endif
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Generate STMPE11 Software reset */
|
||||
|
||||
stmpe11_reset(priv);
|
||||
return (STMPE11_HANDLE)priv;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stmpe11_getreg8
|
||||
*
|
||||
* Description:
|
||||
* Read from an 8-bit STMPE11 register
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_STMPE11_I2C
|
||||
uint8_t stmpe11_getreg8(FAR struct stmpe11_dev_s *priv, uint8_t regaddr)
|
||||
{
|
||||
/* 8-bit data read sequence:
|
||||
*
|
||||
* Start - I2C_Write_Address - STMPE11_Reg_Address -
|
||||
* Repeated_Start - I2C_Read_Address - STMPE11_Read_Data - STOP
|
||||
*/
|
||||
|
||||
struct i2c_msg_s msg[2];
|
||||
uint8_t regval;
|
||||
int ret;
|
||||
|
||||
/* Setup 8-bit STMPE11 address write message */
|
||||
|
||||
msg[0].addr = priv->config->address; /* 7-bit address */
|
||||
msg[0].flags = 0; /* Write transaction, beginning with START */
|
||||
msg[0].buffer = ®addr; /* Transfer from this address */
|
||||
msg[0].length = 1; /* Send one byte following the address
|
||||
* (no STOP) */
|
||||
|
||||
/* Set up the 8-bit STMPE11 data read message */
|
||||
|
||||
msg[1].addr = priv->config->address; /* 7-bit address */
|
||||
msg[1].flags = I2C_M_READ; /* Read transaction, beginning with Re-START */
|
||||
msg[1].buffer = ®val; /* Transfer to this address */
|
||||
msg[1].length = 1; /* Receive one byte following the address
|
||||
* (then STOP) */
|
||||
|
||||
/* Perform the transfer */
|
||||
|
||||
ret = I2C_TRANSFER(priv->i2c, msg, 2);
|
||||
if (ret < 0)
|
||||
{
|
||||
idbg("I2C_TRANSFER failed: %d\n", ret);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return regval;
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stmpe11_putreg8
|
||||
*
|
||||
* Description:
|
||||
* Write a value to an 8-bit STMPE11 register
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_STMPE11_I2C
|
||||
void stmpe11_putreg8(FAR struct stmpe11_dev_s *priv,
|
||||
uint8_t regaddr, uint8_t regval)
|
||||
{
|
||||
/* 8-bit data read sequence:
|
||||
*
|
||||
* Start - I2C_Write_Address - STMPE11_Reg_Address - STMPE11_Write_Data - STOP
|
||||
*/
|
||||
|
||||
struct i2c_msg_s msg;
|
||||
uint8_t txbuffer[2];
|
||||
int ret;
|
||||
|
||||
/* Setup to the data to be transferred. Two bytes: The STMPE11 register
|
||||
* address followed by one byte of data.
|
||||
*/
|
||||
|
||||
txbuffer[0] = regaddr;
|
||||
txbuffer[1] = regval;
|
||||
|
||||
/* Setup 8-bit STMPE11 address write message */
|
||||
|
||||
msg.addr = priv->config->address; /* 7-bit address */
|
||||
msg.flags = 0; /* Write transaction, beginning with START */
|
||||
msg.buffer = txbuffer; /* Transfer from this address */
|
||||
msg.length = 2; /* Send two byte following the address
|
||||
* (then STOP) */
|
||||
|
||||
/* Perform the transfer */
|
||||
|
||||
ret = I2C_TRANSFER(priv->i2c, &msg, 1);
|
||||
if (ret < 0)
|
||||
{
|
||||
idbg("I2C_TRANSFER failed: %d\n", ret);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stmpe11_getreg16
|
||||
*
|
||||
* Description:
|
||||
* Read 16-bits of data from an STMPE-11 register
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_STMPE11_I2C
|
||||
uint16_t stmpe11_getreg16(FAR struct stmpe11_dev_s *priv, uint8_t regaddr)
|
||||
{
|
||||
/* 16-bit data read sequence:
|
||||
*
|
||||
* Start - I2C_Write_Address - STMPE11_Reg_Address -
|
||||
* Repeated_Start - I2C_Read_Address - STMPE11_Read_Data_1 -
|
||||
* STMPE11_Read_Data_2 - STOP
|
||||
*/
|
||||
|
||||
|
||||
struct i2c_msg_s msg[2];
|
||||
uint8_t rxbuffer[2];
|
||||
int ret;
|
||||
|
||||
/* Setup 8-bit STMPE11 address write message */
|
||||
|
||||
msg[0].addr = priv->config->address; /* 7-bit address */
|
||||
msg[0].flags = 0; /* Write transaction, beginning with START */
|
||||
msg[0].buffer = ®addr; /* Transfer from this address */
|
||||
msg[0].length = 1; /* Send one byte following the address
|
||||
* (no STOP) */
|
||||
|
||||
/* Set up the 8-bit STMPE11 data read message */
|
||||
|
||||
msg[1].addr = priv->config->address; /* 7-bit address */
|
||||
msg[1].flags = I2C_M_READ; /* Read transaction, beginning with Re-START */
|
||||
msg[1].buffer = rxbuffer; /* Transfer to this address */
|
||||
msg[1].length = 2; /* Receive two bytes following the address
|
||||
* (then STOP) */
|
||||
|
||||
/* Perform the transfer */
|
||||
|
||||
ret = I2C_TRANSFER(priv->i2c, msg, 2);
|
||||
if (ret < 0)
|
||||
{
|
||||
idbg("I2C_TRANSFER failed: %d\n", ret);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return (uint16_t)rxbuffer[0] << 16 | (uint16_t)rxbuffer[1];
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* CONFIG_INPUT && CONFIG_INPUT_STMPE11 */
|
||||
|
||||
+178
-28
@@ -49,6 +49,8 @@
|
||||
#include <nuttx/i2c.h>
|
||||
#include <nuttx/spi.h>
|
||||
|
||||
#include <nuttx/irq.h>
|
||||
|
||||
#if defined(CONFIG_INPUT) && defined(CONFIG_INPUT_STMPE11)
|
||||
|
||||
/********************************************************************************************
|
||||
@@ -77,8 +79,13 @@
|
||||
* in getting the right configuration.
|
||||
*/
|
||||
|
||||
#ifndef CONFIG_I2C_TRANSFER
|
||||
# error "CONFIG_I2C_TRANSFER is required in the I2C configuration"
|
||||
#ifdef CONFIG_STMPE11_I2C
|
||||
# ifndef CONFIG_I2C
|
||||
# error "CONFIG_I2C is required in the I2C support"
|
||||
# endif
|
||||
# ifndef CONFIG_I2C_TRANSFER
|
||||
# error "CONFIG_I2C_TRANSFER is required in the I2C configuration"
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_DISABLE_SIGNALS
|
||||
@@ -149,7 +156,7 @@
|
||||
#define STMPE11_ADC_DATACH6 0x3c /* ADC channel 6 (16-bit) */
|
||||
#define STMPE11_ADC_DATACH7 0x3e /* ADC channel 7 (16-bit) */
|
||||
#define STMPE11_TSC_CTRL 0x40 /* 4-wire touchscreen controller setup */
|
||||
#define STMPE11_TSWC_CFG 0x41 /* Touchscreen controller configuration */
|
||||
#define STMPE11_TSC_CFG 0x41 /* Touchscreen controller configuration */
|
||||
#define STMPE11_WDW_TRX 0x42 /* Window setup for top right X (16-bit) */
|
||||
#define STMPE11_WDW_TRY 0x44 /* Window setup for top right Y (16-bit) */
|
||||
#define STMPE11_WDW_BLX 0x46 /* Window setup for bottom left X (16-bit) */
|
||||
@@ -336,33 +343,78 @@
|
||||
#define TEMP_CTRL_THRES_EN (1 << 3) /* Bit 3: Threshold enable */
|
||||
#define TEMP_CTRL_THRES_RANGE (1 << 4) /* Bit 4: temperature threshold enable, 0='>=' 1='<' */
|
||||
|
||||
/* GPIO Configuration ***********************************************************************/
|
||||
/* The STMPE11 GPIO interfaces take an 8-bit bit-encoded parameter to describe the GPIO pin.
|
||||
* The following definitions describe the bit-encoding of that parameter.
|
||||
*
|
||||
* 7654 3210
|
||||
* ---- ----
|
||||
* MIRF VPPP
|
||||
*
|
||||
* Input Pins: 1IRF .PPP
|
||||
*
|
||||
* Output Pins: 0.RF VPPP
|
||||
*
|
||||
* Bits 7 is the pin direction.
|
||||
*/
|
||||
|
||||
#define STMPE11_GPIO_INPUT (1 << 7) /* Input pin (possibly interrupting) */
|
||||
#define STMPE11_GPIO_INPUT (0) /* Configure as in input pin (possibly interrupting) */
|
||||
|
||||
/* Bit 6 indicates that the pin will generate an interrupt (inputs only) */
|
||||
|
||||
#define STMPE11_GPIO_IN (1 << 6) /* Input interrupting pin */
|
||||
|
||||
/* The bits 4-5 select the rising and/or the falling edge detection. */
|
||||
|
||||
#define STMPE11_GPIO_RISING (1 << 5) /* Input interrupting pin */
|
||||
#define STMPE11_GPIO_FALLING (1 << 4) /* Input interrupting pin */
|
||||
|
||||
/* Bit 3 is the initial value for output pins */
|
||||
|
||||
#define STMPE11_GPIO_ONE (1 << 3) /* The initial value is logic 1 */
|
||||
#define STMPE11_GPIO_ZERO (0) /* The initial value is logic 0 */
|
||||
|
||||
/* Bits 0-2 is the pin number */
|
||||
|
||||
#define STMPE11_GPIO_PIN_SHIFT (0)
|
||||
#define STMPE11_GPIO_PIN_MASK (7 << STMPE11_GPIO_PIN_SHIFT)
|
||||
# define STMPE11_GPIO_PIN0 (0 << STMPE11_GPIO_PIN_SHIFT)
|
||||
# define STMPE11_GPIO_PIN1 (1 << STMPE11_GPIO_PIN_SHIFT)
|
||||
# define STMPE11_GPIO_PIN2 (2 << STMPE11_GPIO_PIN_SHIFT)
|
||||
# define STMPE11_GPIO_PIN3 (3 << STMPE11_GPIO_PIN_SHIFT)
|
||||
# define STMPE11_GPIO_PIN4 (4 << STMPE11_GPIO_PIN_SHIFT)
|
||||
# define STMPE11_GPIO_PIN5 (5 << STMPE11_GPIO_PIN_SHIFT)
|
||||
# define STMPE11_GPIO_PIN6 (6 << STMPE11_GPIO_PIN_SHIFT)
|
||||
# define STMPE11_GPIO_PIN7 (7 << STMPE11_GPIO_PIN_SHIFT)
|
||||
|
||||
/********************************************************************************************
|
||||
* Public Types
|
||||
********************************************************************************************/
|
||||
|
||||
/* A reference to a structure of this type must be passed to the STMPE11
|
||||
* driver. This structure provides information about the configuration
|
||||
* of the STMPE11 and provides some board-specific hooks.
|
||||
/* A reference to a structure of this type must be passed to the STMPE11 driver when the
|
||||
* driver is instantiaed. This structure provides information about the configuration of the
|
||||
* STMPE11 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 the frequency.
|
||||
* 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 the frequency.
|
||||
*/
|
||||
|
||||
struct stmpe11_config_s
|
||||
{
|
||||
/* Device characterization */
|
||||
|
||||
uint8_t address; /* 7-bit I2C address (only bits 0-6 used) */
|
||||
uint32_t frequency; /* I2C frequency */
|
||||
#ifdef CONFIG_STMPE11_I2C
|
||||
uint8_t address; /* 7-bit I2C address (only bits 0-6 used) */
|
||||
#endif
|
||||
uint32_t frequency; /* I2C or SPI frequency */
|
||||
|
||||
/* If multiple STMPE11 devices are supported, then an IRQ number must
|
||||
* be provided for each so that their interrupts can be distinguished.
|
||||
*/
|
||||
|
||||
#ifndef CONFIG_STMPE11_MULTIPLE
|
||||
int irq; /* IRQ number received by interrupt handler. */
|
||||
int irq; /* IRQ number received by interrupt handler. */
|
||||
#endif
|
||||
|
||||
/* IRQ/GPIO access callbacks. These operations all hidden behind
|
||||
@@ -374,7 +426,7 @@ struct stmpe11_config_s
|
||||
* attach - Attach the STMPE11 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
|
||||
* pendown - Return the state of the pen down GPIO input (TSC only)
|
||||
*/
|
||||
|
||||
int (*attach)(FAR struct stmpe11_config_s *state, xcpt_t isr);
|
||||
@@ -383,6 +435,14 @@ struct stmpe11_config_s
|
||||
bool (*pendown)(FAR struct stmpe11_config_s *state);
|
||||
};
|
||||
|
||||
/* Since the STMPE11 is a multi-function device, no functionality is assumed when the device
|
||||
* is first created. Rather, a multi-step initialization is required. When
|
||||
* stmpe11_register is called, it returns a handle of the following type. That handle may
|
||||
* then be used to enable a configure the STMPE11 functionality.
|
||||
*/
|
||||
|
||||
typedef FAR void *STMPE11_HANDLE;
|
||||
|
||||
/********************************************************************************************
|
||||
* Public Function Prototypes
|
||||
********************************************************************************************/
|
||||
@@ -395,34 +455,124 @@ extern "C" {
|
||||
#endif
|
||||
|
||||
/********************************************************************************************
|
||||
* Name: stmpe11_register
|
||||
* Name: stmpe11_instantiate
|
||||
*
|
||||
* Description:
|
||||
* Configure the STMPE11 to use the provided I2C device instance. This
|
||||
* will register the driver as /dev/inputN where N is the minor device
|
||||
* number
|
||||
* Instantiate and configure the STMPE11 device driver to use the provided I2C or SPI
|
||||
* device instance.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An I2C or SPI driver instance
|
||||
* config - Persistant 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.
|
||||
* A non-zero handle is returned on success. This handle may then be used to configure
|
||||
* the STMPE11 driver as necessary. A NULL handle value is returned on failure.
|
||||
*
|
||||
********************************************************************************************/
|
||||
|
||||
#ifdef CONFIG_STMPE11_SPI
|
||||
EXTERN int stmpe11_register(FAR struct spi_dev_s *dev,
|
||||
FAR struct stmpe11_config_s *config,
|
||||
int minor);
|
||||
EXTERN STMPE11_HANDLE stmpe11_instantiate(FAR struct spi_dev_s *dev,
|
||||
FAR struct stmpe11_config_s *config);
|
||||
#else
|
||||
EXTERN int stmpe11_register(FAR struct i2c_dev_s *dev,
|
||||
FAR struct stmpe11_config_s *config,
|
||||
int minor);
|
||||
EXTERN STMPE11_HANDLE stmpe11_instantiate(FAR struct i2c_dev_s *dev,
|
||||
FAR struct stmpe11_config_s *config);
|
||||
#endif
|
||||
|
||||
/********************************************************************************************
|
||||
* Name: stmpe11_register
|
||||
*
|
||||
* Description:
|
||||
* Enable TSC functionality. GPIO4-7 must be available. This function will register the
|
||||
* touchsceen driver as /dev/inputN where N is the minor device number
|
||||
*
|
||||
* Input Parameters:
|
||||
* handle - The handle previously returned by stmpe11_register
|
||||
* 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 stmpe11_register(STMPE11_HANDLE handle, int minor);
|
||||
|
||||
/********************************************************************************************
|
||||
* Name: stmpe11_gpioconfig
|
||||
*
|
||||
* Description:
|
||||
* Configure an STMPE11 GPIO pin
|
||||
*
|
||||
* Input Parameters:
|
||||
* handle - The handle previously returned by stmpe11_register
|
||||
* pinconfig - Bit-encoded pin configuration
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero is returned on success. Otherwise, a negated errno value is returned to indicate
|
||||
* the nature of the failure.
|
||||
*
|
||||
********************************************************************************************/
|
||||
|
||||
EXTERN int stmpe11_gpioconfig(STMPE11_HANDLE handle, uint8_t pinconfig);
|
||||
|
||||
/********************************************************************************************
|
||||
* Name: stmpe11_gpiowrite
|
||||
*
|
||||
* Description:
|
||||
* Set or clear the GPIO output
|
||||
*
|
||||
* Input Parameters:
|
||||
* handle - The handle previously returned by stmpe11_register
|
||||
* pinconfig - Bit-encoded pin configuration
|
||||
* value = true: write logic '1'; false: write logic '0;
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero is returned on success. Otherwise, a negated errno value is returned to indicate
|
||||
* the nature of the failure.
|
||||
*
|
||||
********************************************************************************************/
|
||||
|
||||
EXTERN int stmpe11_gpiowrite(STMPE11_HANDLE handle, uint8_t pinconfig, bool value);
|
||||
|
||||
/********************************************************************************************
|
||||
* Name: stmpe11_gpioread
|
||||
*
|
||||
* Description:
|
||||
* Set or clear the GPIO output
|
||||
*
|
||||
* Input Parameters:
|
||||
* handle - The handle previously returned by stmpe11_register
|
||||
* pinconfig - Bit-encoded pin configuration
|
||||
* value - The location to return the state of the GPIO pin
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero is returned on success. Otherwise, a negated errno value is returned to indicate
|
||||
* the nature of the failure.
|
||||
*
|
||||
********************************************************************************************/
|
||||
|
||||
EXTERN int stmpe11_gpioread(STMPE11_HANDLE handle, uint8_t pinconfig, bool *value);
|
||||
|
||||
/********************************************************************************************
|
||||
* Name: stmpe11_gpioattach
|
||||
*
|
||||
* Description:
|
||||
* Attach to a GPIO interrupt input pin and enable interrrupts on the pin
|
||||
*
|
||||
* Input Parameters:
|
||||
* handle - The handle previously returned by stmpe11_register
|
||||
* pinconfig - Bit-encoded pin configuration
|
||||
* handler - The handler that will be called when the interrupt occurs.
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero is returned on success. Otherwise, a negated errno value is returned to indicate
|
||||
* the nature of the failure.
|
||||
*
|
||||
********************************************************************************************/
|
||||
|
||||
EXTERN int stmpe11_gpioread(STMPE11_HANDLE handle, uint8_t pinconfig, bool *value);
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
|
||||
@@ -64,6 +64,12 @@
|
||||
#define TSIOC_SETFREQUENCY _TSIOC(0x0003) /* arg: Pointer to uint32_t frequency value */
|
||||
#define TSIOC_GETFREQUENCY _TSIOC(0x0004) /* arg: Pointer to uint32_t frequency value */
|
||||
|
||||
/* Specific touchscreen drivers may support additional, device specific ioctal
|
||||
* commands, beginning with this value:
|
||||
*/
|
||||
|
||||
#define TSIOC_USER 0x0005 /* Lowest, unused TSC ioctl command */
|
||||
|
||||
/* These definitions provide the meaning of all of the bits that may be
|
||||
* reported in the struct touch_point_s flags.
|
||||
*/
|
||||
|
||||
Reference in New Issue
Block a user