126 lines
4.4 KiB
C
126 lines
4.4 KiB
C
/****************************************************************************
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* boards/arm/nuc1xx/nutiny-nuc120/include/board.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __BOARDS_ARM_NUC1XX_NUTINY_NUC120_INCLUDE_BOARD_H
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#define __BOARDS_ARM_NUC1XX_NUTINY_NUC120_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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* Pre-processor 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 software.
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* This LED is connected to PIN17.
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* 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
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* the NuTiny.
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* 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
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* 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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#endif /* __BOARDS_ARM_NUC1XX_NUTINY_NUC120_INCLUDE_BOARD_H */
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