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/************************************************************************************
* configs/nutiny-nuc120/include/board.h
* include/arch/board/board.h
*
* Copyright (C) 2013 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_NUTINY_NUC12_INCLUDE_BOARD_H
#define __CONFIGS_NUTINY_NUC12_INCLUDE_BOARD_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
/************************************************************************************
* Definitions
************************************************************************************/
/* Clocking *************************************************************************/
/* Crystal frequencies */
#define BOARD_XTALHI_FREQUENCY 12000000
#define BOARD_XTALLO_FREQUENCY 32768
/* PLL: The PLL must be 48MHz x N times when using USB
*
* FOUT = FIN x (NF/NR) x (1 / NO)
* FIN = Input reference clock frequency
* NF = Feedback divider
* = (FB_DV + 2)
* NR = Input divider
* = (IN_DV + 2)
* NO = 1 if OUT_DV == 0
* 2 if OUT_DV == 1 or 2
* 4 if OUT_DV == 3
*
* FOUT = 12000000 x 48 / 3 / 4
* = 48MHz
*/
#define BOARD_PLL_FIN BOARD_XTALHI_FREQUENCY
#define BOARD_PLL_FB_DV 46
#define BOARD_PLL_NF (BOARD_PLL_FB_DV+2)
#define BOARD_PLL_IN_DV 1
#define BOARD_PLL_NR (BOARD_PLL_IN_DV+2)
#define BOARD_PLL_OUT_DV 3
#define BOARD_PLL_NO 4
#define BOARD_PLL_FOUT \
(BOARD_PLL_FIN * BOARD_PLL_NF / BOARD_PLL_NR / BOARD_PLL_NO)
/* HCLK. FOUT is the HCLK source clock. */
#define BOARD_HCLK_N 1
#define BOARD_HCLK_FREQUENCY (BOARD_PLL_FOUT / BOARD_HCLK_N)
/* USB. FOUT is the source. The USB CLK must be 48MHz */
#define BOARD_USB_N 1
#define BOARD_USB_FREQUENCY (BOARD_PLL_FOUT / BOARD_USB_N)
/* LED definitions ******************************************************************/
/* The NuTiny has a single green LED that can be controlled from sofware. This LED
* is connected to PIN17. It is pulled high so a low value will illuminate the LED.
*/
#define BOARD_NLEDS 1
/* If CONFIG_ARCH_LEDs is defined, then NuttX will control the LED on board the
* NuTiny. The following definitions describe how NuttX controls the LEDs:
*
* SYMBOL Meaning LED state
* Initially all LED is OFF
* ------------------- ----------------------- ------------- ------------
* LED_STARTED NuttX has been started LED ON
* LED_HEAPALLOCATE Heap has been allocated LED ON
* LED_IRQSENABLED Interrupts enabled LED ON
* LED_STACKCREATED Idle stack created LED ON
* LED_INIRQ In an interrupt LED should glow
* LED_SIGNAL In a signal handler LED might glow
* LED_ASSERTION An assertion failed LED ON while handling the assertion
* LED_PANIC The system has crashed LED Blinking at 2Hz
* LED_IDLE NUC1XX is is sleep mode (Optional, not used)
*/
#define LED_STARTED 0
#define LED_HEAPALLOCATE 0
#define LED_IRQSENABLED 0
#define LED_STACKCREATED 0
#define LED_INIRQ 0
#define LED_SIGNAL 0
#define LED_ASSERTION 0
#define LED_PANIC 0
/* Button definitions ***************************************************************/
/* The NuTiny has no buttons */
#define NUM_BUTTONS 0
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
/************************************************************************************
* Name: nuc_boardinitialize
*
* Description:
* All NUC1XX architectures must provide the following entry point. This entry point
* is called early in the intitialization -- after all memory has been configured
* and mapped but before any devices have been initialized.
*
************************************************************************************/
void nuc_boardinitialize(void);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __CONFIGS_NUTINY_NUC12_INCLUDE_BOARD_H */
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