configs/nrf52-pca10040: Add support for buttons
This commit is contained in:
Janne Rosberg
Gregory Nutt
parent
99e04a2d39
commit
296a7d33b0
@ -98,7 +98,19 @@
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*/
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/* Button definitions *******************************************************/
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/* To be provided */
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/* Board supports four buttons. */
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#define BUTTON_BTN1 0
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#define BUTTON_BTN2 1
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#define BUTTON_BTN3 2
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#define BUTTON_BTN4 3
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#define NUM_BUTTONS 4
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#define BUTTON_BTN1_BIT (1 << BUTTON_BTN1)
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#define BUTTON_BTN2_BIT (1 << BUTTON_BTN2)
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#define BUTTON_BTN3_BIT (1 << BUTTON_BTN3)
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#define BUTTON_BTN4_BIT (1 << BUTTON_BTN4)
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/* UART Pins ****************************************************************/
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/*
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@ -48,4 +48,8 @@ else
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CSRCS += nrf52_userleds.c
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endif
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ifeq ($(CONFIG_ARCH_BUTTONS),y)
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CSRCS += nrf52_buttons.c
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endif
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include $(TOPDIR)/configs/Board.mk
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@ -73,7 +73,12 @@
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#define GPIO_LED4 (GPIO_OUTPUT | GPIO_VALUE_ONE | GPIO_PIN20)
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/* Button definitions *******************************************************/
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/* to be provided */
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/* Board supports four buttons. */
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#define GPIO_BUTTON1 (GPIO_INPUT | GPIO_PULLUP | GPIO_PIN13)
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#define GPIO_BUTTON2 (GPIO_INPUT | GPIO_PULLUP | GPIO_PIN14)
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#define GPIO_BUTTON3 (GPIO_INPUT | GPIO_PULLUP | GPIO_PIN15)
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#define GPIO_BUTTON4 (GPIO_INPUT | GPIO_PULLUP | GPIO_PIN16)
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/****************************************************************************
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* Public Types
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164
configs/nrf52-pca10040/src/nrf52_buttons.c
Normal file
164
configs/nrf52-pca10040/src/nrf52_buttons.c
Normal file
@ -0,0 +1,164 @@
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/****************************************************************************
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* configs/nrf52-pca10400/src/nrf52_buttons.c
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Janne Rosberg <janne@offcode.fi>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 "nrf52-pca10040.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 PCA10400 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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void 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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}
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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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