boards/arm/samd2l2/arduino-m0/src/arduino_m0.h

/****************************************************************************
 * boards/arm/samd2l2/arduino-m0/src/arduino_m0.h
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 ****************************************************************************/

#ifndef __BOARDS_ARM_SAMD2L2_ARDUINO_M0_SRC_ARDUINO_M0_H
#define __BOARDS_ARM_SAMD2L2_ARDUINO_M0_SRC_ARDUINO_M0_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>
#include <nuttx/compiler.h>

#include <stdint.h>

#include <arch/irq.h>
#include <nuttx/irq.h>

#include "sam_config.h"
#include "sam_pinmap.h"

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

/* LEDs:
 * There is a LED on board the Arduino M0 board.
 *
 * This LED is controlled by PA17 and the LED can be activated by driving
 * PA17 to High.
 *
 * When CONFIG_ARCH_LEDS is defined in the NuttX configuration, NuttX will
 * control the LED as follows:
 *
 *   SYMBOL              Meaning                 LED
 *   ------------------- ----------------------- ------
 *   LED_STARTED         NuttX has been started  OFF
 *   LED_HEAPALLOCATE    Heap has been allocated OFF
 *   LED_IRQSENABLED     Interrupts enabled      OFF
 *   LED_STACKCREATED    Idle stack created      ON
 *   LED_INIRQ           In an interrupt         N/C
 *   LED_SIGNAL          In a signal handler     N/C
 *   LED_ASSERTION       An assertion failed     N/C
 *   LED_PANIC           The system has crashed  FLASH
 *
 * Thus if the LED is statically on, NuttX has successfully  booted and is,
 * apparently, running normally.  If the LED is flashing at approximately
 * 2Hz, then a fatal error has been detected and the system has halted.
 */

#define PORT_STATUS_LED (PORT_OUTPUT | PORT_PULL_NONE | PORT_OUTPUT_SET | \
                         PORTA | PORT_PIN17)

/****************************************************************************
 * Public Types
 ****************************************************************************/

/****************************************************************************
 * Public Data
 ****************************************************************************/

#ifndef __ASSEMBLY__

/****************************************************************************
 * Public Functions Definitions
 ****************************************************************************/

/****************************************************************************
 * Name: sam_bringup
 *
 * Description:
 *   Perform architecture-specific initialization
 *
 *   CONFIG_BOARD_LATE_INITIALIZE=y :
 *     Called from board_late_initialize().
 *
 *   CONFIG_BOARD_LATE_INITIALIZE=y && CONFIG_BOARDCTL=y :
 *     Called from the NSH library
 *
 ****************************************************************************/

int sam_bringup(void);

/****************************************************************************
 * Name: sam_adc_setup
 *
 * Description:
 *   Initialize ADC and register the ADC driver.
 *
 ****************************************************************************/

int sam_adc_setup(void);

/****************************************************************************
 * Name: sam_spidev_initialize
 *
 * Description:
 *   Called to configure SPI chip select PORT pins for the SAM3U-EK board.
 *
 ****************************************************************************/

void weak_function sam_spidev_initialize(void);

#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_SAMD2L2_ARDUINO_M0_SRC_ARDUINO_M0_H */