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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-12-31 01:16:48 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-12-31 01:16:48 +0000 |
commit | fe3199408b03f3b9df2d0daca9e2fefe29135746 (patch) | |
tree | 155a7336bc1eb63e3e28554e68c432a6909a5bb1 /nuttx/configs/olimex-lpc1766stk/src | |
parent | 03cf528b833689d018e1930ab193e94df5dbcfc2 (diff) | |
download | px4-nuttx-fe3199408b03f3b9df2d0daca9e2fefe29135746.tar.gz px4-nuttx-fe3199408b03f3b9df2d0daca9e2fefe29135746.tar.bz2 px4-nuttx-fe3199408b03f3b9df2d0daca9e2fefe29135746.zip |
Add (untested) support for the buttons on the Olimex LPC1766-STK board
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4243 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/olimex-lpc1766stk/src')
-rwxr-xr-x | nuttx/configs/olimex-lpc1766stk/src/Makefile | 7 | ||||
-rwxr-xr-x | nuttx/configs/olimex-lpc1766stk/src/lpc1766stk_internal.h | 40 | ||||
-rw-r--r-- | nuttx/configs/olimex-lpc1766stk/src/up_buttons.c | 201 |
3 files changed, 238 insertions, 10 deletions
diff --git a/nuttx/configs/olimex-lpc1766stk/src/Makefile b/nuttx/configs/olimex-lpc1766stk/src/Makefile index 981a4b4df..f006461bc 100755 --- a/nuttx/configs/olimex-lpc1766stk/src/Makefile +++ b/nuttx/configs/olimex-lpc1766stk/src/Makefile @@ -39,16 +39,23 @@ CFLAGS += -I$(TOPDIR)/sched ASRCS = CSRCS = up_boot.c up_leds.c up_ssp.c + ifeq ($(CONFIG_NSH_ARCHINIT),y) CSRCS += up_nsh.c endif + ifeq ($(CONFIG_USBSTRG),y) CSRCS += up_usbstrg.c endif + ifeq ($(CONFIG_NX_LCDDRIVER),y) CSRCS += up_lcd.c endif +ifeq ($(CONFIG_ARCH_BUTTONS),y) +CSRCS += up_buttons.c +endif + AOBJS = $(ASRCS:.S=$(OBJEXT)) COBJS = $(CSRCS:.c=$(OBJEXT)) diff --git a/nuttx/configs/olimex-lpc1766stk/src/lpc1766stk_internal.h b/nuttx/configs/olimex-lpc1766stk/src/lpc1766stk_internal.h index db9915eef..4fa082369 100755 --- a/nuttx/configs/olimex-lpc1766stk/src/lpc1766stk_internal.h +++ b/nuttx/configs/olimex-lpc1766stk/src/lpc1766stk_internal.h @@ -2,7 +2,7 @@ * configs/olimex-lpc1766stk/src/lpc1766stk_internal.h * arch/arm/src/board/lpc1766stk_internal.n * - * Copyright (C) 2010 Gregory Nutt. All rights reserved. + * Copyright (C) 2010-2011 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <gnutt@nuttx.org> * * Redistribution and use in source and binary forms, with or without @@ -137,11 +137,20 @@ * P2[12]/#EINT2/I2STX_WS 51 WAKE-UP * P0[23]/AD0[0]/I2SRX_CLK/CAP3[0] 9 BUT1 * P2[13]/#EINT3/I2STX_SDA 50 BUT2 + * + * Pull-ups are not required because the pins are already pulled-up by through + * resistors on the board. */ -#define LPC1766STK_WAKE_UP (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT2 | GPIO_PIN12) -#define LPC1766STK_BUT1 (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT0 | GPIO_PIN23) -#define LPC1766STK_BUT2 (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT2 | GPIO_PIN13) +#define LPC1766STK_BUT1 (GPIO_INPUT | GPIO_FLOAT | GPIO_PORT0 | GPIO_PIN23) +#define LPC1766STK_BUT2 (GPIO_INPUT | GPIO_FLOAT | GPIO_PORT2 | GPIO_PIN13) +#define LPC1766STK_WAKEUP (GPIO_INPUT | GPIO_FLOAT | GPIO_PORT2 | GPIO_PIN12) + +/* Button IRQ numbers */ + +#define LPC1766STK_BUT1_IRQ LPC17_IRQ_P0p23 +#define LPC1766STK_BUT2_IRQ LPC17_IRQ_P2p13 +#define LPC1766STK_WAKEUP_IRQ LPC17_IRQ_P2p12 /* Joystick GPIO PIN SIGNAL NAME * -------------------------------- ---- -------------- @@ -150,13 +159,24 @@ * P2[1]/PWM1[2]/RXD1 74 DOWN * P2[7]/RD2/RTS1 66 LEFT * P2[8]/TD2/TXD2 65 RIGHT + * + * Pull-ups are not required because the pins are already pulled-up by through + * resistors on the board. */ -#define LPC1766STK_CENTER (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT0 | GPIO_PIN5) -#define LPC1766STK_UP (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT2 | GPIO_PIN0) -#define LPC1766STK_DOWN (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT2 | GPIO_PIN1) -#define LPC1766STK_LEFT (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT2 | GPIO_PIN7) -#define LPC1766STK_RIGHT (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT2 | GPIO_PIN8) +#define LPC1766STK_CENTER (GPIO_INPUT | GPIO_FLOAT | GPIO_PORT0 | GPIO_PIN5) +#define LPC1766STK_UP (GPIO_INPUT | GPIO_FLOAT | GPIO_PORT2 | GPIO_PIN0) +#define LPC1766STK_DOWN (GPIO_INPUT | GPIO_FLOAT | GPIO_PORT2 | GPIO_PIN1) +#define LPC1766STK_LEFT (GPIO_INPUT | GPIO_FLOAT | GPIO_PORT2 | GPIO_PIN7) +#define LPC1766STK_RIGHT (GPIO_INPUT | GPIO_FLOAT | GPIO_PORT2 | GPIO_PIN8) + +/* Joystick IRQ numbers */ + +#define LPC1766STK_CENTER_IRQ LPC17_IRQ_P0p5 +#define LPC1766STK_UP_IRQ LPC17_IRQ_P2p0 +#define LPC1766STK_DOWN_IRQ LPC17_IRQ_P2p1 +#define LPC1766STK_LEFT_IRQ LPC17_IRQ_P2p7 +#define LPC1766STK_RIGHT_IRQ LPC17_IRQ_P2p8 /* Nokia LCD GPIO PIN SIGNAL NAME * -------------------------------- ---- -------------- @@ -228,7 +248,7 @@ * ************************************************************************************/ -extern void weak_function lpc17_sspinitialize(void); +void weak_function lpc17_sspinitialize(void); #endif /* __ASSEMBLY__ */ #endif /* _CONFIGS_OLIMEX_LPC1766STK_SRC_LPC1766STK_INTERNAL_H */ diff --git a/nuttx/configs/olimex-lpc1766stk/src/up_buttons.c b/nuttx/configs/olimex-lpc1766stk/src/up_buttons.c new file mode 100644 index 000000000..65fe89dfc --- /dev/null +++ b/nuttx/configs/olimex-lpc1766stk/src/up_buttons.c @@ -0,0 +1,201 @@ +/**************************************************************************** + * configs/olimex-lpc1766stk/src/up_buttons.c + * + * Copyright (C) 2011 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/irq.h> + +#include <arch/board/board.h> +#include "lpc1766stk_internal.h" + +#ifdef CONFIG_ARCH_BUTTONS + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ +/* Pin configuration for each STM3210E-EVAL button. This array is indexed by + * the BUTTON_* and JOYSTICK_* definitions in board.h + */ + +static const uint16_t g_buttoncfg[BOARD_NUM_BUTTONS] = +{ + LPC1766STK_BUT1, LPC1766STK_BUT2, LPC1766STK_WAKEUP, LPC1766STK_CENTER, + LPC1766STK_UP, LPC1766STK_DOWN, LPC1766STK_LEFT, LPC1766STK_RIGHT +}; + +/* This array defines all of the interupt handlers current attached to + * button events. + */ + +#if defined(CONFIG_ARCH_IRQBUTTONS) && defined(CONFIG_GPIO_IRQ) +static xcpt_t g_buttonisr[BOARD_NUM_BUTTONS]; + +/* This array provides the mapping from button ID numbers to button IRQ + * numbers. + */ + +static uint8_t g_buttonirq[BOARD_NUM_BUTTONS] = +{ + LPC1766STK_BUT1_IRQ, LPC1766STK_BUT2_IRQ, LPC1766STK_WAKEUP_IRQ, + LPC1766STK_CENTER_IRQ, LPC1766STK_UP_IRQ, LPC1766STK_DOWN_IRQ, + LPC1766STK_LEFT_IRQ, LPC1766STK_RIGHT_IRQ +}; +#endif + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_buttoninit + * + * Description: + * up_buttoninit() must be called to initialize button resources. After + * that, up_buttons() may be called to collect the current state of all + * buttons or up_irqbutton() may be called to register button interrupt + * handlers. + * + ****************************************************************************/ + +void up_buttoninit(void) +{ + int i; + + /* Configure the GPIO pins as inputs. */ + + for (i = 0; i < BOARD_NUM_BUTTONS; i++) + { + lpc17_configgpio(g_buttoncfg[i]); + } +} + +/**************************************************************************** + * Name: up_buttons + * + * Description: + * up_buttons() may be called at any time to harvest the state of every + * button. The state of the buttons is returned as a bitset with one + * bit corresponding to each button: If the bit is set, then the button + * is pressed. See the BOARD_BUTTON_*_BIT and BOARD_JOYSTICK_*_BIT + * definitions in board.h for the meaning of each bit. + * + ****************************************************************************/ + +uint8_t up_buttons(void) +{ + uint8_t ret = 0; + int i; + + /* Check that state of each key */ + + for (i = 0; i < BOARD_NUM_BUTTONS; i++) + { + /* A LOW value means that the key is pressed. */ + + bool released = lpc17_gpioread(g_buttoncfg[i]); + + /* Accumulate the set of depressed (not released) keys */ + + if (!released) + { + ret |= (1 << i); + } + } + + return ret; +} + +/************************************************************************************ + * Button support. + * + * Description: + * up_buttoninit() must be called to initialize button resources. After + * that, up_buttons() may be called to collect the current state of all + * buttons or up_irqbutton() may be called to register button interrupt + * handlers. + * + * up_irqbutton() 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 + * BOARD_BUTTON_* and BOARD_JOYSTICK_* definitions in board.h for the meaning + * of enumeration values. The previous interrupt handler address is returned + * (so that it may restored, if so desired). + * + ************************************************************************************/ + +#if defined(CONFIG_ARCH_IRQBUTTONS) && defined(CONFIG_GPIO_IRQ) +xcpt_t up_irqbutton(int id, xcpt_t irqhandler) +{ + xcpt_t oldhandler = NULL; + irqstate_t flags; + + /* Verify that the button ID is within range */ + + if ((unsigned)id < BOARD_NUM_BUTTONS) + { + /* Return the current button handler and set the new interrupt handler */ + + oldhandler = g_buttonisr[id]; + g_buttonisr = irqhandler; + + /* Disable interrupts until we are done */ + + flags = irqsave(); + + /* Configure the interrupt */ + + (void)irq_attach(g_buttonirq[id], irqhandler); + up_enable_irq(g_buttonirq[id]); + irqrestore(flags); + } + return oldhandler; +} +#endif + +#endif /* CONFIG_ARCH_BUTTONS */ |