eac1d28aae
Janne Rosberg has submitted the ICLA and we can migrate the licenses to Apache. David Sidrane has submitted the ICLA and we can migrate the licenses to Apache. Ivan Ucherdzhiev has submitted the ICLA and we can migrate the licenses to Apache. Gregory Nutt has submitted the SGA and we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
152 lines
4.5 KiB
C
152 lines
4.5 KiB
C
/****************************************************************************
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* boards/arm/nrf52/nrf52832-dk/src/nrf52_buttons.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <errno.h>
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#include <nuttx/arch.h>
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#include <nuttx/board.h>
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#include <arch/board/board.h>
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#include "nrf52_gpio.h"
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#include "nrf52832-dk.h"
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#ifdef CONFIG_ARCH_BUTTONS
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* Pin configuration for each nRF52832-DK button. This array is indexed by
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* the BUTTON_* definitions in board.h
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*/
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static const uint32_t g_buttons[NUM_BUTTONS] =
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{
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GPIO_BUTTON1,
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GPIO_BUTTON2,
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GPIO_BUTTON3,
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GPIO_BUTTON4
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_button_initialize
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*
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* Description:
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* board_button_initialize() must be called to initialize button resources.
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* After that, board_buttons() may be called to collect the current state
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* of all buttons or board_button_irq() may be called to register button
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* interrupt handlers.
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*
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****************************************************************************/
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uint32_t board_button_initialize(void)
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{
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int i;
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/* Configure the GPIO pins as inputs. */
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for (i = 0; i < NUM_BUTTONS; i++)
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{
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nrf52_gpio_config(g_buttons[i]);
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}
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return NUM_BUTTONS;
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}
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/****************************************************************************
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* Name: board_buttons
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****************************************************************************/
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uint32_t board_buttons(void)
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{
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uint32_t ret = 0;
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/* Check that state of each key */
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if (!nrf52_gpio_read(g_buttons[BUTTON_BTN1]))
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{
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ret |= BUTTON_BTN1_BIT;
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}
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if (!nrf52_gpio_read(g_buttons[BUTTON_BTN2]))
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{
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ret |= BUTTON_BTN2_BIT;
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}
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if (!nrf52_gpio_read(g_buttons[BUTTON_BTN3]))
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{
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ret |= BUTTON_BTN3_BIT;
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}
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if (!nrf52_gpio_read(g_buttons[BUTTON_BTN4]))
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{
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ret |= BUTTON_BTN4_BIT;
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}
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return ret;
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}
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/****************************************************************************
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* Button support.
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*
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* Description:
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* board_button_initialize() must be called to initialize button resources.
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* After that, board_buttons() may be called to collect the current state
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* of all buttons or board_button_irq() may be called to register button
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* interrupt handlers.
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*
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* After board_button_initialize() has been called, board_buttons() may be
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* called to collect the state of all buttons. board_buttons() returns an
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* 32-bit bit set with each bit associated with a button. See the
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* BUTTON_*_BIT definitions in board.h for the meaning of each bit.
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*
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* board_button_irq() may be called to register an interrupt handler that
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* will be called when a button is depressed or released. The ID value is
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* a button enumeration value that uniquely identifies a button resource.
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* See the BUTTON_* definitions in board.h for the meaning of enumeration
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* value.
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_IRQBUTTONS
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int board_button_irq(int id, xcpt_t irqhandler, FAR void *arg)
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{
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int ret = -ENOSYS;
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#warning Missing Implementation!
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return ret;
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}
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#endif
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#endif /* CONFIG_ARCH_BUTTONS */
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