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SAM4E-EK: Ooops.. two touchscreen drivers(?)

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This commit is contained in:
Gregory Nutt 2014-05-14 10:56:03 -06:00
parent 296db40aeb
commit 5f6da749bb
3 changed files with 6 additions and 300 deletions
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8
configs/sam4e-ek/README.txt
View File

@ -889,6 +889,8 @@ Touchscreen
CONFIG_DEBUG_VERBOSE=y : Enable verbose debug output
CONFIG_DEBUG_INPUT=y : Enable debug output from input devices
STATUS: Verified 2014-05-14
ILI9325-Based LCD
=================
@ -1379,6 +1381,8 @@ Configurations
CONFIG_DEBUG_VERBOSE=y : Enable verbose debug output
CONFIG_DEBUG_INPUT=y : Enable debug output from input devices
STATUS: Verified 2014-05-14
11. This configuration can be re-configured to test the on-board LCD
module.
@ -1387,7 +1391,6 @@ Configurations
Device Drivers -> LCD Driver Support
CONFIG_LCD=y : Enable LCD support
CONFIG_NX_LCDDRIVER=y : LCD graphics device
CONFIG_LCD_MAXCONTRAST=1 : Value should not matter
CONFIG_LCD_MAXPOWER=64 : Must be > 16
CONFIG_LCD_LANDSCAPE=y : Landscape orientation
@ -1397,7 +1400,8 @@ Configurations
CONFIG_SAM4EEK_LCD_BGCOLOR=0x00 : Initial background color
Graphics Support
CONFIG_NX=y
CONFIG_NX=y : Enable Graphics support
CONFIG_NX_LCDDRIVER=y : LCD graphics device
Graphics Support -> Supported Pixel Depths
CONFIG_NX_DISABLE_1BPP=y : Only 16BPP supported

4
configs/sam4e-ek/src/Makefile
View File

@ -73,10 +73,6 @@ ifeq ($(CONFIG_USBMSC),y)
CSRCS += sam_usbmsc.c
endif
ifeq ($(CONFIG_INPUT_ADS7843E),y)
CSRCS += sam_touchscreen.c
endif
COBJS = $(CSRCS:.c=$(OBJEXT))
SRCS = $(ASRCS) $(CSRCS)

294
configs/sam4e-ek/src/sam_touchscreen.c
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@ -1,294 +0,0 @@
/************************************************************************************
* configs/sam4e-ek/src/sam_touchscreen.c
*
* Copyright (C) 2014 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.
*
************************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdbool.h>
#include <stdio.h>
#include <debug.h>
#include <assert.h>
#include <errno.h>
#include <nuttx/spi/spi.h>
#include <nuttx/input/touchscreen.h>
#include <nuttx/input/ads7843e.h>
#include "sam_gpio.h"
#include "sam4e-ek.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#ifdef CONFIG_INPUT_ADS7843E
#ifndef CONFIG_INPUT
# error "Touchscreen support requires CONFIG_INPUT"
#endif
#ifndef CONFIG_SAM34_SPI0
# error "Touchscreen support requires CONFIG_SAM34_SPI0"
#endif
#ifndef CONFIG_SAM34_GPIOA_IRQ
# error "Touchscreen support requires CONFIG_SAM34_GPIOA_IRQ"
#endif
#ifndef CONFIG_ADS7843E_FREQUENCY
# define CONFIG_ADS7843E_FREQUENCY 500000
#endif
#ifndef CONFIG_ADS7843E_SPIDEV
# define CONFIG_ADS7843E_SPIDEV TSC_CSNUM
#endif
#if CONFIG_ADS7843E_SPIDEV != TSC_CSNUM
# error "CONFIG_ADS7843E_SPIDEV must have the same value as TSC_CSNUM"
#endif
#ifndef CONFIG_ADS7843E_DEVMINOR
# define CONFIG_ADS7843E_DEVMINOR 0
#endif
/****************************************************************************
* Static Function Prototypes
****************************************************************************/
/* IRQ/GPIO access callbacks. These operations all hidden behind
* callbacks to isolate the ADS7843E 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 ADS7843E 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
*/
static int tsc_attach(FAR struct ads7843e_config_s *state, xcpt_t isr);
static void tsc_enable(FAR struct ads7843e_config_s *state, bool enable);
static void tsc_clear(FAR struct ads7843e_config_s *state);
static bool tsc_busy(FAR struct ads7843e_config_s *state);
static bool tsc_pendown(FAR struct ads7843e_config_s *state);
/****************************************************************************
* Private Data
****************************************************************************/
/* A reference to a structure of this type must be passed to the ADS7843E
* driver. This structure provides information about the configuration
* of the ADS7843E 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.
*/
static struct ads7843e_config_s g_tscinfo =
{
.frequency = CONFIG_ADS7843E_FREQUENCY,
.attach = tsc_attach,
.enable = tsc_enable,
.clear = tsc_clear,
.busy = tsc_busy,
.pendown = tsc_pendown,
};
/****************************************************************************
* Private Functions
****************************************************************************/
/* IRQ/GPIO access callbacks. These operations all hidden behind
* callbacks to isolate the ADS7843E 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 ADS7843E 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
*/
static int tsc_attach(FAR struct ads7843e_config_s *state, xcpt_t isr)
{
/* Attach the ADS7843E interrupt */
ivdbg("Attaching %p to IRQ %d\n", isr, SAM_TCS_IRQ);
return irq_attach(SAM_TCS_IRQ, isr);
}
static void tsc_enable(FAR struct ads7843e_config_s *state, bool enable)
{
/* Attach and enable, or detach and disable */
ivdbg("IRQ:%d enable:%d\n", SAM_TCS_IRQ, enable);
if (enable)
{
sam_gpioirqenable(SAM_TCS_IRQ);
}
else
{
sam_gpioirqdisable(SAM_TCS_IRQ);
}
}
static void tsc_clear(FAR struct ads7843e_config_s *state)
{
/* Does nothing */
}
static bool tsc_busy(FAR struct ads7843e_config_s *state)
{
#if defined(CONFIG_DEBUG_INPUT) && defined(CONFIG_DEBUG_VERBOSE)
static bool last = (bool)-1;
#endif
/* BUSY is high impedance when CS is high (not selected). When CS is
* is low, BUSY is active high.
*/
bool busy = sam_gpioread(GPIO_TCS_BUSY);
#if defined(CONFIG_DEBUG_INPUT) && defined(CONFIG_DEBUG_VERBOSE)
if (busy != last)
{
ivdbg("busy:%d\n", busy);
last = busy;
}
#endif
return busy;
}
static bool tsc_pendown(FAR struct ads7843e_config_s *state)
{
/* The /PENIRQ value is active low */
bool pendown = !sam_gpioread(GPIO_TCS_IRQ);
ivdbg("pendown:%d\n", pendown);
return pendown;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: arch_tcinitialize
*
* Description:
* Each board that supports a touchscreen device must provide this function.
* This function is called by application-specific, setup logic to
* configure the touchscreen device. This function will register the driver
* as /dev/inputN where N is the minor device number.
*
* Input Parameters:
* 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.
*
****************************************************************************/
int arch_tcinitialize(int minor)
{
FAR struct spi_dev_s *dev;
int ret;
idbg("minor %d\n", minor);
DEBUGASSERT(minor == 0);
/* Configure and enable the ADS7843E interrupt pin as an input */
(void)sam_configgpio(GPIO_TCS_BUSY);
(void)sam_configgpio(GPIO_TCS_IRQ);
/* Configure the PIO interrupt */
sam_gpioirq(GPIO_TCS_IRQ);
/* Get an instance of the SPI interface for the touchscreen chip select */
dev = up_spiinitialize(TSC_CSNUM);
if (!dev)
{
idbg("Failed to initialize SPI chip select %d\n", TSC_CSNUM);
return -ENODEV;
}
/* Initialize and register the SPI touschscreen device */
ret = ads7843e_register(dev, &g_tscinfo, CONFIG_ADS7843E_DEVMINOR);
if (ret < 0)
{
idbg("Failed to initialize SPI chip select %d\n", TSC_CSNUM);
/* up_spiuninitialize(dev); */
return -ENODEV;
}
return OK;
}
/****************************************************************************
* Name: arch_tcuninitialize
*
* Description:
* Each board that supports a touchscreen device must provide this function.
* This function is called by application-specific, setup logic to
* uninitialized the touchscreen device.
*
* Input Parameters:
* None
*
* Returned Value:
* None.
*
****************************************************************************/
void arch_tcuninitialize(void)
{
/* No support for un-initializing the touchscreen ADS7843E device yet */
}
#endif /* CONFIG_INPUT_ADS7843E */