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https://github.com/RIOT-OS/RIOT.git
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d88e46b3d5
There is no need to copy the configuration parameter set to the device descriptor. A const pointer to the configuration parameter set in ROM is sufficient. It saves some 16 byte of RAM.
83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
/*
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* Copyright (C) 2021 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_ft5x06
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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 "periph/gpio.h"
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#include "ft5x06.h"
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#include "ft5x06_internal.h"
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#include "ft5x06_touch_dev.h"
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#define ENABLE_DEBUG 0
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#include "debug.h"
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uint16_t _ft5x06_height(const touch_dev_t *touch_dev)
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{
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const ft5x06_t *dev = (const ft5x06_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 _ft5x06_width(const touch_dev_t *touch_dev)
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{
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const ft5x06_t *dev = (const ft5x06_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 _ft5x06_touches(const touch_dev_t *touch_dev, touch_t *touches, size_t len)
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{
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ft5x06_t *dev = (ft5x06_t *)touch_dev;
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assert(dev);
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uint8_t ret;
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ft5x06_read_touch_count(dev, &ret);
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if (ret && touches != NULL) {
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assert(len <= ft5x06_get_touches_count_max(dev));
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ft5x06_read_touch_positions(dev, (ft5x06_touch_position_t *)touches, len);
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}
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return ret;
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}
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void _ft5x06_set_event_callback(const touch_dev_t *touch_dev, touch_event_cb_t cb, void *arg)
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{
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ft5x06_t *dev = (ft5x06_t *)touch_dev;
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assert(dev);
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if (gpio_is_valid(dev->params->int_pin)) {
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gpio_init_int(dev->params->int_pin, GPIO_IN, GPIO_RISING, cb, arg);
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}
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}
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const touch_dev_driver_t ft5x06_touch_dev_driver = {
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.height = _ft5x06_height,
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.width = _ft5x06_width,
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.touches = _ft5x06_touches,
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.set_event_callback = _ft5x06_set_event_callback,
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};
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