98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2012
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Joel Bodenmann aka Tectu <joel@unormal.org>
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This file is part of ChibiOS/GFX.
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ChibiOS/GFX is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/GFX is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file drivers/ginput/touch/ADS7843/ginput_lld_mouse_board_unknown.h
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* @brief GINPUT Touch low level driver source for the ADS7843 on some unknown board.
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*
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* @addtogroup GINPUT_MOUSE
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* @{
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*/
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#ifndef _GINPUT_LLD_MOUSE_BOARD_H
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#define _GINPUT_LLD_MOUSE_BOARD_H
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/**
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* @brief Initialise the board for the touch.
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*
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* @notapi
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*/
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static __inline void init_board(void) {
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spiStart(TOUCH_SPIDriver, TOUCH_SPIConfig);
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}
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/**
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* @brief Check whether the surface is currently touched
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* @return TRUE if the surface is currently touched
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*
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* @notapi
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*/
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static __inline bool_t getpin_pressed(void) {
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return !palReadPad(TOUCH_PressedPort, TOUCH_PressedPin);
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}
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/**
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* @brief Aquire the bus ready for readings
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*
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* @notapi
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*/
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static __inline void aquire_bus(void) {
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#if defined(SPI_USE_MUTUAL_EXCLUSION)
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spiAcquireBus(TOUCH_SPIDriver);
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#endif
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GINPUT_TOUCH_SPI_PROLOGUE();
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palClearPad(TOUCH_SPIConfig->ssport, TOUCH_SPIConfig->sspad);
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}
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/**
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* @brief Release the bus after readings
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*
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* @notapi
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*/
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static __inline void release_bus(void) {
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palSetPad(TOUCH_SPIConfig->ssport, TOUCH_SPIConfig->sspad);
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GINPUT_TOUCH_SPI_EPILOGUE();
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#if defined(SPI_USE_MUTUAL_EXCLUSION)
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spiReleaseBus(tsDriver->spip);
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#endif
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}
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/**
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* @brief Read a value from touch controller
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* @return The value read from the controller
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*
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* params[in] port The controller port to read.
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*
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* @notapi
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*/
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static __inline uint16_t read_value(uint16_t port) {
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static uint8_t txbuf[3] = {0};
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static uint8_t rxbuf[3] = {0};
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txbuf[0] = cmd;
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spiExchange(TOUCH_SPIDriver, 3, txbuf, rxbuf);
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return (rxbuf[1] << 5) | (rxbuf[2] >> 3);
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}
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#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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/** @} */
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