135 lines
4.6 KiB
C
135 lines
4.6 KiB
C
/****************************************************************************
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* configs/sama5d4-ek/src/sam_userleds.c
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*
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* Copyright (C) 2014-2015 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 3 LEDs on the SAMA5D4-EK:
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*
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* ------------------------------ ------------------- -------------------------
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* SAMA5D4 PIO SIGNAL USAGE
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* ------------------------------ ------------------- -------------------------
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* PE28/NWAIT/RTS4/A19 1Wire_PE28 1-WIRE ROM, LCD, D8 (green)
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* PE8/A8/TCLK3/PWML3 LED_USER_PE8 LED_USER (D10)
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* PE9/A9/TIOA2 LED_POWER_PE9 LED_POWER (D9, Red)
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* ------------------------------ ------------------- -------------------------
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*
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* - D8: D8 is shared with other functions and cannot be used if the 1-Wire ROM
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* is used. I am not sure of the LCD function, but the LED may not be available
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* if the LCD is used either. We will avoid using D8 just for simplicity.
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* - D10: Nothing special here. A low output illuminates.
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* - D9: The Power ON LED. Connects to the via an IRLML2502 MOSFET. This LED will
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* be on when power is applied but otherwise, I think it works like D10.
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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 "sama5d4-ek.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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void board_userled_initialize(void)
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{
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/* Configure LED PIOs for output */
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sam_configpio(PIO_LED_USER);
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sam_configpio(PIO_LED_POWER);
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}
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/****************************************************************************
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* Name: board_userled
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****************************************************************************/
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void board_userled(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_LED_USER;
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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_LED_POWER;
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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: board_userled_all
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****************************************************************************/
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void board_userled_all(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_LED_USER, ledon);
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/* High illuminates */
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ledon = ((ledset & BOARD_RED_BIT) != 0);
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sam_piowrite(PIO_LED_POWER, ledon);
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}
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#endif /* !CONFIG_ARCH_LEDS */
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