120 lines
4.5 KiB
C
120 lines
4.5 KiB
C
/****************************************************************************
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* configs/samd21-xplained/src/sam_userleds.c
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*
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* Copyright (C) 2015 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 three LEDs on board the SAMD21 Xplained Pro board: The EDBG
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* controls two of the LEDs, a power LED and a status LED. There is only
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* one user controllable LED, a yellow LED labelled STATUS near the SAMD21 USB
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* connector.
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*
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* This LED is controlled by PB30 and the LED can be activated by driving PB30
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* to GND.
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*
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* When CONFIG_ARCH_LEDS is defined in the NuttX configuration, NuttX will
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* control the LED. Otherwise, the LED can be controlled from user applications
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* using the logic in this file.
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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_port.h"
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#include "samd21-xplained.h"
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#ifndef CONFIG_ARCH_LEDS
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_userled_initialize
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*
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* Description:
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* If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
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* LEDs. If CONFIG_ARCH_LEDS is not defined, then the
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* board_userled_initialize() is available to initialize the LED from user
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* application logic.
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*
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****************************************************************************/
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void board_userled_initialize(void)
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{
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(void)sam_configport(PORT_STATUS_LED);
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}
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/****************************************************************************
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* Name: board_userled
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*
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* Description:
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* If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
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* LEDs. If CONFIG_ARCH_LEDS is not defined, then the board_userled() is
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* available to control the LED from user application logic.
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*
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****************************************************************************/
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void board_userled(int led, bool ledon)
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{
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if (led == BOARD_STATUS_LED)
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{
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sam_portwrite(PORT_STATUS_LED, !ledon);
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}
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}
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/****************************************************************************
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* Name: board_userled_all
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*
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* Description:
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* If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
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* LEDs. If CONFIG_ARCH_LEDS is not defined, then the board_userled_all() is
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* available to control the LED from user application logic. NOTE: since
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* there is only a single LED on-board, this is function is not very useful.
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*
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****************************************************************************/
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void board_userled_all(uint8_t ledset)
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{
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board_userled(BOARD_STATUS_LED, (ledset & BOARD_STATUS_LED_BIT) != 0);
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}
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#endif /* !CONFIG_ARCH_LEDS */
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