px4-firmware/nuttx/configs/pic32-starterkit/include/board.h

/****************************************************************************
 * configs/pic32-starterkit/include/board.h
 * include/arch/board/board.h
 *
 *   Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <gnutt@nuttx.org>
 *
 * 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.
 *
 ****************************************************************************/

#ifndef __CONFIGS_SURE_PIC32MX_INCLUDE_BOARD_H
#define __CONFIGS_SURE_PIC32MX_INCLUDE_BOARD_H

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

#include <nuttx/config.h>

#ifndef __ASSEMBLY__
#  include <stdbool.h>
#endif

/****************************************************************************
 * Pre-Processor Definitions
 ****************************************************************************/
/* Configuration ************************************************************/

/* Clocking *****************************************************************/
/* Crystal frequencies */

#define BOARD_POSC_FREQ        8000000  /* Primary OSC XTAL frequency (8MHz) */
#define BOARD_SOSC_FREQ        32768    /* Secondary OSC XTAL frequency (32.768KHz) */

/* PLL configuration and resulting CPU clock.
 * CPU_CLOCK = ((POSC_FREQ / IDIV) * MULT) / ODIV
 */

#define BOARD_PLL_IDIV         2        /* PLL input divider */
#define BOARD_PLL_MULT         20       /* PLL multiplier */
#define BOARD_PLL_ODIV         1        /* PLL output divider */

#define BOARD_CPU_CLOCK        80000000 /* CPU clock (80MHz = 8MHz * 20 / 2) */

/* USB PLL configuration.
 * USB_CLOCK = ((POSC_XTAL / IDIV) * 24) / 2
 */

#define BOARD_UPLL_IDIV        2        /* USB PLL divider (revisit) */
#define BOARD_USB_CLOCK        48000000 /* USB clock (8MHz / 2) * 24 / 2) */

/* Peripheral clock is divided down from CPU clock.
 * PBCLOCK = CPU_CLOCK / PBDIV
 */

#define BOARD_PBDIV            2        /* Peripheral clock divisor (PBDIV) */
#define BOARD_PBCLOCK          40000000 /* Peripheral clock (PBCLK = 80MHz/2) */

/* Watchdog pre-scaler (re-visit) */

#define BOARD_WD_ENABLE        0        /* Watchdog is disabled */
#define BOARD_WD_PRESCALER     8        /* Watchdog pre-scaler */

/* Ethernet MII clocking.
 *
 * The clock divider used to create the MII Management Clock (MDC).  The MIIM
 * module uses the SYSCLK as an input clock.  According to the IEEE 802.3
 * Specification this should be no faster than 2.5 MHz. However, some PHYs
 * support clock rates up to 12.5 MHz.
 */

#define BOARD_EMAC_MIIM_DIV    32        /* Ideal: 80MHz/32 = 2.5MHz */

/* LED definitions **********************************************************/
/* LED Configuration ********************************************************/
/* The PIC32MX Ethernet Starter kit has 3 user LEDs labeled LED1-3 on the
 * board graphics (but referred to as LED4-6 in the schematic):
 *
 * PIN User's Guide  Board Stencil  Notes
 * --- ------------- -------------- -------------------------
 * RD0 "User LED D4" "LED1 (RD0")   High illuminates (RED)
 * RD2 "User LED D5" "LED3 (RD2)"   High illuminates (YELLOW)
 * RD1 "User LED D6" "LED2 (RD1)"   High illuminates (GREEN)
 *
 * We will use the labels on the board to identify LEDs
 *
 * There are 5 additional LEDs available on the MEB (but not used by NuttX):
 *
 *   RD1          LED1
 *   RD2          LED2
 *   RD3          LED3
 *   RC1          LED4
 *   RC2          LED5
 */

/* LED index values for use with pic32mx_setled() */

#define PIC32MX_STARTERKIT_LED1     0
#define PIC32MX_STARTERKIT_LED2     1
#define PIC32MX_STARTERKIT_LED3     2
#define PIC32MX_STARTERKIT_NLEDS    3

/* LED bits for use with pic32mx_setleds() */

#define PIC32MX_STARTERKIT_LED1_BIT (1 << PIC32MX_STARTERKIT_LED1)
#define PIC32MX_STARTERKIT_LED2_BIT (1 << PIC32MX_STARTERKIT_LED2)
#define PIC32MX_STARTERKIT_LED3_BIT (1 << PIC32MX_STARTERKIT_LED3)

/* If CONFIG_ARCH_LEDs is defined, then NuttX will control the 3 LEDs
 * on board the Ethernet Starter Kit.  The following definitions
 * describe how NuttX controls the LEDs:
 *
 *                           ON                  OFF
 * ------------------------- ---- ---- ---- ---- ---- ----
 *                           LED1 LED2 LED3 LED1 LED2 LED3
 * ------------------------- ---- ---- ---- ---- ---- ----
 * LED_STARTED            0  OFF  OFF  OFF  ---  ---  ---
 * LED_HEAPALLOCATE       1  ON   OFF  N/C  ---  ---  ---
 * LED_IRQSENABLED        2  OFF  ON   N/C  ---  ---  ---
 * LED_STACKCREATED       3  ON   ON   N/C  ---  ---  ---
 * LED_INIRQ              4  N/C  N/C  ON   N/C  N/C  OFF
 * LED_SIGNAL             4  N/C  N/C  ON   N/C  N/C  OFF
 * LED_ASSERTION          4  N/C  N/C  ON   N/C  N/C  OFF
 * LED_PANIC              5  ON   N/C  N/C  OFF  N/C  N/C
 */

#define LED_STARTED            0
#define LED_HEAPALLOCATE       1
#define LED_IRQSENABLED        2
#define LED_STACKCREATED       3
#define LED_INIRQ              4
#define LED_SIGNAL             4
#define LED_ASSERTION          4
#define LED_PANIC              5

#define LED_NVALUES            6

/* Switch definitions *******************************************************/
/* The PIC32 start kit has 3 switches:
 *
 *   RD7            Switch SW2 (low when closed)
 *   RD6            Switch SW1 (low when closed)
 *   RD13           Switch SW3 (low when closed)
 */

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

#ifndef __ASSEMBLY__

/****************************************************************************
 * Inline Functions
 ****************************************************************************/

/****************************************************************************
 * Public Function Prototypes
 ****************************************************************************/

#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif

/****************************************************************************
 * Name:  pic32mx_ledinit and pic32mx_setled
 *
 * Description:
 *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
 *   LEDs.  If CONFIG_ARCH_LEDS is not defined, then the following interfaces
 *   are available to control the LEDs from user applicaitons.
 *
 ****************************************************************************/

#ifndef CONFIG_ARCH_LEDS
EXTERN void pic32mx_ledinit(void);
#endif

#ifndef CONFIG_ARCH_LEDS
EXTERN void pic32mx_setled(int led, bool ledon);
#endif

#ifndef CONFIG_ARCH_LEDS
EXTERN void pic32mx_setleds(uint8_t ledset);
#endif

#undef EXTERN
#ifdef __cplusplus
}
#endif

#endif /* __ASSEMBLY__ */
#endif /* __CONFIGS_SURE_PIC32MX_INCLUDE_BOARD_H */