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80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/*
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* Copyright (C) 2020 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup drivers_stmpe811
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* @{
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*
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* @file
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* @brief Driver adaption to touch_dev generic interface
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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* @}
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*/
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#include <stddef.h>
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#include <stdint.h>
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#include <errno.h>
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#include <assert.h>
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#include "kernel_defines.h"
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#include "stmpe811.h"
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#include "stmpe811_touch_dev.h"
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#define ENABLE_DEBUG 0
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#include "debug.h"
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uint16_t _stmpe811_height(const touch_dev_t *touch_dev)
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{
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const stmpe811_t *dev = (const stmpe811_t *)touch_dev;
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assert(dev);
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return dev->params.ymax;
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}
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uint16_t _stmpe811_width(const touch_dev_t *touch_dev)
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{
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const stmpe811_t *dev = (const stmpe811_t *)touch_dev;
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assert(dev);
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return dev->params.xmax;
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}
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uint8_t _stmpe811_touches(const touch_dev_t *touch_dev, touch_t *touches, size_t len)
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{
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(void)len;
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stmpe811_t *dev = (stmpe811_t *)touch_dev;
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assert(dev);
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stmpe811_touch_state_t state;
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stmpe811_read_touch_state(dev, &state);
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uint8_t ret = (state == STMPE811_TOUCH_STATE_PRESSED);
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if (ret && touches != NULL) {
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stmpe811_touch_position_t pos;
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stmpe811_read_touch_position(dev, &pos);
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/* STMPE811 driver returns the position with origin at the bottom left
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corner and portrait orientation, so convert them to use top left corner
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as origin and landscape orientation. */
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touches[0].x = pos.y;
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touches[0].y = dev->params.xmax - pos.x;
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DEBUG("X: %i, Y: %i\n", touches[0].x, touches[0].y)
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}
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return ret;
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}
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const touch_dev_driver_t stmpe811_touch_dev_driver = {
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.height = _stmpe811_height,
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.width = _stmpe811_width,
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.touches = _stmpe811_touches,
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};
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