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PIC32MZ Starter Kit: Add support for on-board buttons

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This commit is contained in:
Gregory Nutt 2015-03-02 10:01:10 -06:00
parent 7621e9ed22
commit 2ac70b053b
6 changed files with 213 additions and 3 deletions
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2
configs/Kconfig
View file

@ -573,6 +573,8 @@ config ARCH_BOARD_PIC32MZ_STARTERKIT
bool "Microchip PIC32MZ Ethernet Starter Kit ((DM320006)"
depends on ARCH_CHIP_PIC32MZ2048ECH || ARCH_CHIP_PIC32MZ2048ECM
select ARCH_HAVE_LEDS
select ARCH_HAVE_BUTTONS
select ARCH_HAVE_IRQBUTTONS if PIC32MZ_GPIOIRQ_PORTB
---help---
This is the port of NuttX to the Microchip PIC32MZ Embedded
Connectivity (EC) Starter Kit. There are two configurations of the

9
configs/pic32mz-starterkit/include/board.h
View file

@ -229,6 +229,15 @@
* are grounded when pressed.
*/
#define BUTTON_SW1 0
#define BUTTON_SW2 1
#define BUTTON_SW3 2
#define NUM_BUTTONS 3
#define BUTTON_SW1_BIT (1 << BUTTON_SW1)
#define BUTTON_SW2_BIT (1 << BUTTON_SW2)
#define BUTTON_SW3_BIT (1 << BUTTON_SW3)
/* UARTS ********************************************************************/
/* If the PIC32MZEC Adaptor Board is connected, then UART1 signals are
* available at these locations on the adaptor board:

4
configs/pic32mz-starterkit/nsh/defconfig
View file

@ -147,6 +147,7 @@ CONFIG_PIC32MZ_UART1=y
# CONFIG_PIC32MZ_CAN2 is not set
# CONFIG_PIC32MZ_ETHERNET is not set
# CONFIG_PIC32MZ_CTMU is not set
# CONFIG_PIC32MZ_GPIOIRQ is not set
# CONFIG_PIC32MZ_T1_SOSC is not set
#
@ -240,6 +241,8 @@ CONFIG_ARCH_BOARD="pic32mz-starterkit"
#
CONFIG_ARCH_HAVE_LEDS=y
CONFIG_ARCH_LEDS=y
CONFIG_ARCH_HAVE_BUTTONS=y
# CONFIG_ARCH_BUTTONS is not set
CONFIG_NSH_MMCSDMINOR=0
CONFIG_NSH_MMCSDSLOTNO=0
@ -745,6 +748,7 @@ CONFIG_NSH_BUILTIN_APPS=y
# CONFIG_NSH_DISABLE_MKRD is not set
# CONFIG_NSH_DISABLE_MH is not set
# CONFIG_NSH_DISABLE_MOUNT is not set
# CONFIG_NSH_DISABLE_MV is not set
# CONFIG_NSH_DISABLE_MW is not set
# CONFIG_NSH_DISABLE_PS is not set
# CONFIG_NSH_DISABLE_PUT is not set

4
configs/pic32mz-starterkit/src/Makefile
View file

@ -46,6 +46,10 @@ else
CSRCS += pic32mz_userleds.c
endif
ifeq ($(CONFIG_ARCH_BUTTONS),y)
CSRCS += pic32mz_buttons.c
endif
ifeq ($(CONFIG_NSH_ARCHINIT),y)
CSRCS += pic32mz_nsh.c
endif

13
configs/pic32mz-starterkit/src/pic32mz-starterkit.h
View file

@ -128,9 +128,9 @@
* RH2 LED2 High illuminates (GREEN)
*/
#define GPIO_LED_1 (GPIO_OUTPUT|GPIO_VALUE_ZERO|GPIO_PORTH|GPIO_PIN0)
#define GPIO_LED_2 (GPIO_OUTPUT|GPIO_VALUE_ZERO|GPIO_PORTH|GPIO_PIN1)
#define GPIO_LED_3 (GPIO_OUTPUT|GPIO_VALUE_ZERO|GPIO_PORTH|GPIO_PIN2)
#define GPIO_LED_1 (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORTH | GPIO_PIN0)
#define GPIO_LED_2 (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORTH | GPIO_PIN1)
#define GPIO_LED_3 (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORTH | GPIO_PIN2)
/* The PIC32MZ Ethernet Starter kit has 3 user push buttons labelled SW1-3
* on the board:
@ -146,6 +146,13 @@
* are grounded when pressed.
*/
#define GPIO_SW_1 (GPIO_INPUT | GPIO_INTERRUPT | GPIO_PULLUP | \
GPIO_PORTB | GPIO_PIN12)
#define GPIO_SW_2 (GPIO_INPUT | GPIO_INTERRUPT | GPIO_PULLUP | \
GPIO_PORTB | GPIO_PIN13)
#define GPIO_SW_3 (GPIO_INPUT | GPIO_INTERRUPT | GPIO_PULLUP | \
GPIO_PORTB | GPIO_PIN14)
/****************************************************************************
* Public Types
****************************************************************************/

184
configs/pic32mz-starterkit/src/pic32mz_buttons.c Normal file
View file

@ -0,0 +1,184 @@
/****************************************************************************
* configs/pic32mz-starterkit/src/pic32mz_buttons.c
*
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <nuttx/arch.h>
#include <nuttx/board.h>
#include <arch/board/board.h>
#include "pic32mz-gpio.h"
#include "pic32mz-starterkit.h"
#ifdef CONFIG_ARCH_BUTTONS
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/* Pin configuration for each start kit switch. This array is indexed by
* the BUTTON_* definitions in board.h
*/
static const pinset_t g_buttons[NUM_BUTTONS] =
{
GPIO_SW_1, GPIO_SW_2, GPIO_SW_3
};
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_button_initialize
*
* Description:
* board_button_initialize() must be called to initialize button resources.
* After that, board_buttons() may be called to collect the current state
* of all buttons or board_button_irq() may be called to register button
* interrupt handlers.
*
****************************************************************************/
void board_button_initialize(void)
{
int i;
/* Configure the GPIO pins as inputs. NOTE that EXTI interrupts are
* configured for all pins.
*/
for (i = 0; i < NUM_BUTTONS; i++)
{
pic32mz_configgpio(g_buttons[i]);
}
}
/****************************************************************************
* Name: board_buttons
****************************************************************************/
uint8_t board_buttons(void)
{
uint8_t ret = 0;
int i;
/* Check that state of each key */
for (i = 0; i < NUM_BUTTONS; i++)
{
/* A LOW value means that the key is pressed. */
bool released = pic32mz_gpioread(g_buttons[i]);
/* Accumulate the set of depressed (not released) keys */
if (!released)
{
ret |= (1 << i);
}
}
return ret;
}
/*****************************************************************************
* Button interrupt support.
*
* Description:
* board_button_initialize() must be called to initialize button resources.
* After that, board_buttons() may be called to collect the current state
* of all buttons or board_button_irq() may be called to register button
* interrupthandlers.
*
* After board_button_initialize() has been called, board_buttons() may be
* called to collect the state of all buttons. board_buttons() returns an
* 8-bit bit set with each bit associated with a button. See the
* BUTTON_*_BIT definitions in board.h for the meaning of each bit.
*
* board_button_irq() may be called to register an interrupt handler that
* will be called when a button is depressed or released. The ID value is
* a button enumeration value that uniquely identifies a button resource.
* See the BUTTON_* definitions in board.h for the meaning of enumeration
* value. The previous interrupt handler address is returned (so that it
* may restored, if so desired).
*
*****************************************************************************/
#ifdef CONFIG_ARCH_IRQBUTTONS
xcpt_t board_button_irq(int id, xcpt_t irqhandler)
{
#ifdef CONFIG_PIC32MZ_GPIOIRQ_PORTB
xcpt_t oldhandler = NULL;
if ((unsigned)id < NUM_BUTTONS)
{
/* Perform the attach/detach operation */
oldhandler = pic32mz_gpioattach(g_buttons[id], irqhandler);
/* The interrupt is now disabled. Are we attaching or detaching from
* button interrupt?
*/
if (irqhandler)
{
/* Attaching... enable button interrupts now */
pic32mz_gpioirqenable(g_buttons[id]);
}
}
return oldhandler;
#else
return NULL;
#endif
}
#endif
#endif /* CONFIG_ARCH_BUTTONS */