36df84c843
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5145 42af7a65-404d-4744-a932-0658087f49c3
93 lines
4.6 KiB
C
93 lines
4.6 KiB
C
/********************************************************************************************
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* arch/arm/src/kinetis/kinetis_vrefv1.h
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*
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* Copyright (C) 2011 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 __ARCH_ARM_SRC_KINETIS_KINETIS_VREFV1_H
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#define __ARCH_ARM_SRC_KINETIS_KINETIS_VREFV1_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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#include "chip.h"
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/********************************************************************************************
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* Pre-processor Definitions
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********************************************************************************************/
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/* Register Offsets *************************************************************************/
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#define KINETIS_VREF_TRM_OFFSET 0x0000 /* VREF Trim Register */
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#define KINETIS_VREF_SC_OFFSET 0x0001 /* VREF Status and Control Register */
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/* Register Addresses ***********************************************************************/
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#define KINETIS_VREF_TRM (KINETIS_VREF_BASE+KINETIS_VREF_TRM_OFFSET)
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#define KINETIS_VREF_SC (KINETIS_VREF_BASE+KINETIS_VREF_SC_OFFSET)
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/* Register Bit Definitions *****************************************************************/
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/* VREF Trim Register (8-bit) */
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#define VREF_TRM_SHIFT (0) /* Bits 0-5: Trim bits */
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#define VREF_TRM_MASK (63 << VREF_TRM_SHIFT)
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/* Bits 6-7: Reserved */
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/* VREF Status and Control Register (8-bit) */
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#define VREF_SC_MODE_LV_SHIFT (0) /* Bits 0-1: Buffer Mode selection */
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#define VREF_SC_MODE_LV_MASK (3 << VREF_SC_MODE_LV_SHIFT)
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# define VREF_SC_MODE_LV_BANDGAP (0 << VREF_SC_MODE_LV_SHIFT) /* Bandgap on only */
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# define VREF_SC_MODE_LV_LOWPWR (1 << VREF_SC_MODE_LV_SHIFT) /* Low-power buffer enabled */
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# define VREF_SC_MODE_LV_TIGHT (2 << VREF_SC_MODE_LV_SHIFT) /* Tight-regulation buffer enabled */
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#define VREF_SC_VREFST (1 << 2) /* Bit 2: Internal Voltage Reference stable */
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/* Bits 3-5: Reserved */
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#define VREF_SC_REGEN (1 << 6) /* Bit 6: Regulator enable */
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#define VREF_SC_VREFEN (1 << 7) /* Bit 7: Internal Voltage Reference enable */
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/********************************************************************************************
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* Public Types
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********************************************************************************************/
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/********************************************************************************************
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* Public Data
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********************************************************************************************/
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/********************************************************************************************
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* Public Functions
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********************************************************************************************/
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#endif /* __ARCH_ARM_SRC_KINETIS_KINETIS_VREFV1_H */
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