diff options
Diffstat (limited to 'nuttx/configs/detron/src/up_buttons.c')
| -rw-r--r-- | nuttx/configs/detron/src/up_buttons.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/nuttx/configs/detron/src/up_buttons.c b/nuttx/configs/detron/src/up_buttons.c new file mode 100644 index 000000000..66c1f5351 --- /dev/null +++ b/nuttx/configs/detron/src/up_buttons.c @@ -0,0 +1,180 @@ +/**************************************************************************** + * configs/detron/src/up_buttons.c + * + * Copyright (C) 2010 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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/irq.h> +#include <arch/board/board.h> + +#include "lpc17_internal.h" +#include "detron_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static xcpt_t g_irq_pin_panel_pulse_up; +static xcpt_t g_irq_pin_panel_pulse_down; +static xcpt_t g_irq_pin_panel_center; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_buttoninit + ****************************************************************************/ + +void up_buttoninit(void) +{ + lpc17_configgpio(pin_panel_pulse_up); + lpc17_configgpio(pin_panel_pulse_down); + lpc17_configgpio(pin_panel_center); +} + +/**************************************************************************** + * Name: up_buttons + ****************************************************************************/ + +uint8_t up_buttons(void) +{ + uint8_t retval; + + retval = lpc17_gpioread(pin_panel_pulse_up) ? 0 : pin_panel_pulse_up; + retval |= lpc17_gpioread(pin_panel_pulse_down) ? 0 : pin_panel_pulse_down; + retval |= lpc17_gpioread(pin_panel_center) ? 0 : pin_panel_center; + return retval; +} + +/**************************************************************************** + * Name: up_irq_pin_panel_pulse_up + ****************************************************************************/ + +xcpt_t up_irq_pin_panel_pulse_up(xcpt_t irqhandler) +{ + xcpt_t oldhandler; + irqstate_t flags; + + /* Get the old button interrupt handler and save the new one */ + + oldhandler = g_irq_pin_panel_pulse_up; + g_irq_pin_panel_pulse_up = irqhandler; + + /* Disable interrupts until we are done */ + + flags = irqsave(); + + /* Configure the interrupt */ + + (void)irq_attach(IRQ_pin_panel_pulse_up, irqhandler); + up_enable_irq(IRQ_pin_panel_pulse_up); + + irqrestore(flags); + + return oldhandler; +} + +/**************************************************************************** + * Name: up_irq_pin_panel_pulse_down + * ****************************************************************************/ + +xcpt_t up_irq_pin_panel_pulse_down(xcpt_t irqhandler) +{ + xcpt_t oldhandler; + irqstate_t flags; + + /* Get the old button interrupt handler and save the new one */ + + oldhandler = g_irq_pin_panel_pulse_down; + g_irq_pin_panel_pulse_down = irqhandler; + + /* Disable interrupts until we are done */ + + flags = irqsave(); + + /* Configure the interrupt */ + + (void)irq_attach(IRQ_pin_panel_pulse_down, irqhandler); + up_enable_irq(IRQ_pin_panel_pulse_down); + + irqrestore(flags); + + return oldhandler; +} + +/**************************************************************************** + * Name: up_irq_pin_panel_center + * ****************************************************************************/ + +xcpt_t up_irq_pin_panel_center(xcpt_t irqhandler) +{ + xcpt_t oldhandler; + irqstate_t flags; + + /* Get the old button interrupt handler and save the new one */ + + oldhandler = g_irq_pin_panel_center; + g_irq_pin_panel_center = irqhandler; + + /* Disable interrupts until we are done */ + + flags = irqsave(); + + /* Configure the interrupt */ + + (void)irq_attach(IRQ_pin_panel_center, irqhandler); + up_enable_irq(IRQ_pin_panel_center); + + irqrestore(flags); + + return oldhandler; +} + |