163 lines
5.3 KiB
C
163 lines
5.3 KiB
C
/****************************************************************************
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* configs/sama5d3x-ek/src/sam_userleds.c
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*
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* Copyright (C) 2013 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 CONTRIBUTORS
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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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/* There are two LEDs on the SAMA5D3 series-CM board that can be controlled
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* by software. A blue LED is controlled via PIO pins. A red LED normally
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* provides an indication that power is supplied to the board but can also
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* be controlled via software.
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*
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* PE25. This blue LED is pulled high and is illuminated by pulling PE25
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* low.
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*
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* PE24. The red LED is also pulled high but is driven by a transistor so
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* that it is illuminated when power is applied even if PE24 is not
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* configured as an output. If PE24 is configured as an output, then the
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* LCD is illuminated by a low output.
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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 <stdint.h>
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#include <stdbool.h>
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#include <debug.h>
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#include <arch/board/board.h>
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#include "sam_pio.h"
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#include "sama5d3x-ek.h"
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#ifndef CONFIG_ARCH_LEDS
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG
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* with CONFIG_DEBUG_VERBOSE too)
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*/
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#ifdef CONFIG_DEBUG_LEDS
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# define leddbg lldbg
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# define ledvdbg llvdbg
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#else
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# define leddbg(x...)
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# define ledvdbg(x...)
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Function Protototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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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: sam_ledinit
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****************************************************************************/
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void sam_ledinit(void)
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{
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/* Configure LED PIOs for output */
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sam_configpio(PIO_BLUE);
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sam_configpio(PIO_RED);
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}
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/****************************************************************************
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* Name: sam_setled
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****************************************************************************/
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void sam_setled(int led, bool ledon)
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{
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uint32_t ledcfg;
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if (led == BOARD_BLUE)
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{
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/* Low illuminates */
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ledcfg = PIO_BLUE;
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ledon = !ledon;
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}
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else if (led == BOARD_RED)
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{
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/* High illuminates */
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ledcfg = PIO_RED;
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}
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else
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{
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return;
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}
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sam_piowrite(ledcfg, ledon);
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}
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/****************************************************************************
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* Name: sam_setleds
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****************************************************************************/
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void sam_setleds(uint8_t ledset)
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{
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bool ledon;
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/* Low illuminates */
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ledon = ((ledset & BOARD_BLUE_BIT) == 0);
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sam_piowrite(PIO_BLUE, ledon);
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/* High illuminates */
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ledon = ((ledset & BOARD_RED_BIT) != 0);
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sam_piowrite(PIO_RED, ledon);
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}
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#endif /* !CONFIG_ARCH_LEDS */
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