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author | Gregory Nutt <gnutt@nuttx.org> | 2015-03-02 10:01:10 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2015-03-02 10:01:10 -0600 |
commit | 7d48dc09f36aff69e7cdf4b4c2152d650545c553 (patch) | |
tree | 5e39db622f70c3abe1c8d16c58d4a001a5e92d49 /nuttx/configs/pic32mz-starterkit | |
parent | 3b95bac0ac4b7f79c4a19f1678d4703ca0a24c81 (diff) | |
download | px4-nuttx-7d48dc09f36aff69e7cdf4b4c2152d650545c553.tar.gz px4-nuttx-7d48dc09f36aff69e7cdf4b4c2152d650545c553.tar.bz2 px4-nuttx-7d48dc09f36aff69e7cdf4b4c2152d650545c553.zip |
PIC32MZ Starter Kit: Add support for on-board buttons
Diffstat (limited to 'nuttx/configs/pic32mz-starterkit')
5 files changed, 211 insertions, 3 deletions
diff --git a/nuttx/configs/pic32mz-starterkit/include/board.h b/nuttx/configs/pic32mz-starterkit/include/board.h index d6a53f3b0..0d3a458de 100644 --- a/nuttx/configs/pic32mz-starterkit/include/board.h +++ b/nuttx/configs/pic32mz-starterkit/include/board.h @@ -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: diff --git a/nuttx/configs/pic32mz-starterkit/nsh/defconfig b/nuttx/configs/pic32mz-starterkit/nsh/defconfig index 8cd3f3e77..d35b1c0b2 100644 --- a/nuttx/configs/pic32mz-starterkit/nsh/defconfig +++ b/nuttx/configs/pic32mz-starterkit/nsh/defconfig @@ -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 diff --git a/nuttx/configs/pic32mz-starterkit/src/Makefile b/nuttx/configs/pic32mz-starterkit/src/Makefile index 35673186a..b2d52d99f 100644 --- a/nuttx/configs/pic32mz-starterkit/src/Makefile +++ b/nuttx/configs/pic32mz-starterkit/src/Makefile @@ -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 diff --git a/nuttx/configs/pic32mz-starterkit/src/pic32mz-starterkit.h b/nuttx/configs/pic32mz-starterkit/src/pic32mz-starterkit.h index 65b34b6bb..5bc759e9f 100644 --- a/nuttx/configs/pic32mz-starterkit/src/pic32mz-starterkit.h +++ b/nuttx/configs/pic32mz-starterkit/src/pic32mz-starterkit.h @@ -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 ****************************************************************************/ diff --git a/nuttx/configs/pic32mz-starterkit/src/pic32mz_buttons.c b/nuttx/configs/pic32mz-starterkit/src/pic32mz_buttons.c new file mode 100644 index 000000000..fb16c5da3 --- /dev/null +++ b/nuttx/configs/pic32mz-starterkit/src/pic32mz_buttons.c @@ -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 */ |