configs/imxrt1050-evk: This commit adds support for the imxrt button. I haven't been able to get GPIO 5 to work so I have replaced the button with GPIO1 pin24. It is right next to the button so I just wire it to the existing user button for testing.
This commit is contained in:
Jake Choy
Gregory Nutt
parent
6e1d43dd11
commit
63f988b404
@ -138,6 +138,14 @@
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*/
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/* Button definitions ***************************************************************/
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/* The IMXRT board has one external user button
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*
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* 1. SW8 (IRQ0) GPIO5-00
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*/
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#define BUTTON_SW8 0
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#define BUTTON_SW8_BIT (1 << BUTTON_SW8)
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/* PIO Disambiguation ***************************************************************/
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@ -74,6 +74,18 @@
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#define GPIO_LED0 (GPIO_OUTPUT | GPIO_OUTPUT_ZERO | \
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GPIO_PORT1 | GPIO_PIN9)
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/* Buttons
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*
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* The IMXRT board has one external user button
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*
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* 1. SW8 (IRQ0) GPIO5-00
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*
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* REVISIT: Button is set to Port1 pin24 for now.
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*/
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#define GPIO_SW8 (GPIO_INTERRUPT | GPIO_INT_FALLINGEDGE | \
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GPIO_PORT1 | GPIO_PIN24)
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/************************************************************************************
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* Public Types
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************************************************************************************/
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143
configs/imxrt1050-evk/src/imxrt_buttons.c
Normal file
143
configs/imxrt1050-evk/src/imxrt_buttons.c
Normal file
@ -0,0 +1,143 @@
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/****************************************************************************
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* configs/imrtx1050-evk/src/imxrt_buttons.c
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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 CONTRIBUTORSMULTILINK
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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 <sys/types.h>
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#include <errno.h>
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#include <nuttx/arch.h>
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#include <nuttx/irq.h>
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#include <arch/board/board.h>
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#include "up_arch.h"
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#include "imxrt_config.h"
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#include "imxrt_irq.h"
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#include "imxrt_gpio.h"
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#include "imxrt1050-evk.h"
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#ifdef CONFIG_ARCH_BUTTONS
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* The IMXRT has 1 user button (SW8)):
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*
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* 1. SW8 (IRQ0) GPIO5-00
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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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/* Configure the button as input */
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imxrt_config_gpio(GPIO_SW8);
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}
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/****************************************************************************
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* Name: board_buttons
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*
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* Description:
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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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* 8-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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****************************************************************************/
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uint8_t board_buttons(void)
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{
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uint8_t ret = 0;
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if (!imxrt_gpio_read(GPIO_SW8))
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{
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ret |= BUTTON_SW8_BIT;
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}
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return ret;
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}
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/****************************************************************************
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* Name: board_button_irq
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*
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* Description:
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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)
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{
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int ret = -EINVAL;
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/* The button has already been configured as an interrupting input (by
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* board_button_initialize() above).
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*
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* Attach the new button handler.
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*/
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ret = irq_attach(id, irqhandler, NULL);
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/* Then make sure that interrupts are enabled on the pin */
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up_enable_irq(id);
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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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