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