156 lines
4.5 KiB
C
156 lines
4.5 KiB
C
/*
|
|
ChibiOS/GFX - Copyright (C) 2012
|
|
Joel Bodenmann aka Tectu <joel@unormal.org>
|
|
|
|
This file is part of ChibiOS/GFX.
|
|
|
|
ChibiOS/GFX is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
ChibiOS/GFX is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/**
|
|
* @file include/touchscreen_lld.h
|
|
* @brief TOUCHSCREEN Driver subsystem low level driver header.
|
|
*
|
|
* @addtogroup TOUCHSCREEN
|
|
* @{
|
|
*/
|
|
|
|
#ifndef TOUCHSCREEN_LLD_H
|
|
#define TOUCHSCREEN_LLD_H
|
|
|
|
#if GFX_USE_TOUCHSCREEN || defined(__DOXYGEN__)
|
|
|
|
/*===========================================================================*/
|
|
/* Include the low level driver configuration information */
|
|
/*===========================================================================*/
|
|
|
|
#include "touchscreen_lld_config.h"
|
|
|
|
/*===========================================================================*/
|
|
/* Error checks. */
|
|
/*===========================================================================*/
|
|
|
|
#ifndef TOUCHSCREEN_NEED_MULTITHREAD
|
|
#define TOUCHSCREEN_NEED_MULTITHREAD FALSE
|
|
#endif
|
|
|
|
#ifndef TOUCHSCREEN_XY_INVERTED
|
|
#define TOUCHSCREEN_XY_INVERTED FALSE
|
|
#endif
|
|
|
|
#ifndef TOUCHSCREEN_STORE_CALIBRATION
|
|
#define TOUCHSCREEN_STORE_CALIBRATION FALSE
|
|
#endif
|
|
|
|
#ifndef TOUCHSCREEN_VERIFY_CALIBRATION
|
|
#define TOUCHSCREEN_VERIFY_CALIBRATION FALSE
|
|
#endif
|
|
|
|
#ifndef TOUCHSCREEN_HAS_IRQ
|
|
#define TOUCHSCREEN_HAS_IRQ FALSE
|
|
#endif
|
|
|
|
#ifndef TOUCHSCREEN_HAS_PRESSURE
|
|
#define TOUCHSCREEN_HAS_PRESSURE FALSE
|
|
#endif
|
|
|
|
#ifndef TOUCHSCREEN_SPI_PROLOGUE
|
|
#define TOUCHSCREEN_SPI_PROLOGUE()
|
|
#endif
|
|
|
|
#ifndef TOUCHSCREEN_SPI_EPILOGUE
|
|
#define TOUCHSCREEN_SPI_EPILOGUE()
|
|
#endif
|
|
|
|
/*===========================================================================*/
|
|
/* Driver types. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Structure representing a touchscreen driver.
|
|
*/
|
|
typedef struct TouchscreenDriver {
|
|
/*
|
|
* @brief Pointer to SPI driver.
|
|
* @note SPI driver must be enabled in mcuconf.h and halconf.h
|
|
*/
|
|
SPIDriver *spip;
|
|
|
|
/*
|
|
* @brief Pointer to the SPI configuration structure.
|
|
* @note The lowest possible speed ~ 1-2MHz is to be used, otherwise
|
|
* will result in a lot of noise
|
|
*/
|
|
const SPIConfig *spicfg;
|
|
|
|
/*
|
|
* @brief Touchscreen controller TPIRQ pin GPIO port
|
|
*/
|
|
ioportid_t tsIRQPort;
|
|
|
|
/*
|
|
* @brief Touchscreen controller TPIRQ GPIO pin
|
|
* @note The interface is polled as of now, interrupt support is
|
|
* to be implemented in the future.
|
|
*/
|
|
ioportmask_t tsIRQPin;
|
|
|
|
/*
|
|
* @brief Initialize the SPI with the configuration struct given or not
|
|
* If TRUE, spiStart is called by the init, otherwise not
|
|
* @note This is provided in such a case when SPI port is being shared
|
|
* across multiple peripherals, so not to disturb the SPI bus.
|
|
* You can use TOUCHSCREEN_SPI_PROLOGUE() and TOUCHSCREEN_SPI_EPILOGUE()
|
|
* macros to change the SPI configuration or speed before and
|
|
* after using the touchpad. An example case would be sharing the
|
|
* bus with a fast flash memory chip.
|
|
*/
|
|
bool_t direct_init;
|
|
} TouchscreenDriver;
|
|
|
|
|
|
/*===========================================================================*/
|
|
/* External declarations. */
|
|
/*===========================================================================*/
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Core functions */
|
|
void ts_lld_init(const TouchscreenDriver *ts);
|
|
|
|
uint16_t ts_lld_read_value(uint8_t cmd);
|
|
uint16_t ts_lld_read_x(void);
|
|
uint16_t ts_lld_read_y(void);
|
|
|
|
#if TOUCHSCREEN_HAS_IRQ
|
|
uint8_t ts_lld_irq(void);
|
|
#endif
|
|
|
|
#if TOUCHSCREEN_HAS_PRESSURE
|
|
uint16_t ts_lld_read_z(void);
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* GFX_USE_TOUCHSCREEN */
|
|
|
|
#endif /* _TOUCHSCREEN_LLD_H */
|
|
/** @} */
|
|
|