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/********************************************************************************************
* arch/arm/src/kinetis/kinetis_vrefv1.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 __ARCH_ARM_SRC_KINETIS_KINETIS_VREFV1_H
#define __ARCH_ARM_SRC_KINETIS_KINETIS_VREFV1_H
/********************************************************************************************
* Included Files
********************************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
/********************************************************************************************
* Pre-processor Definitions
********************************************************************************************/
/* Register Offsets *************************************************************************/
#define KINETIS_VREF_TRM_OFFSET 0x0000 /* VREF Trim Register */
#define KINETIS_VREF_SC_OFFSET 0x0001 /* VREF Status and Control Register */
/* Register Addresses ***********************************************************************/
#define KINETIS_VREF_TRM (KINETIS_VREF_BASE+KINETIS_VREF_TRM_OFFSET)
#define KINETIS_VREF_SC (KINETIS_VREF_BASE+KINETIS_VREF_SC_OFFSET)
/* Register Bit Definitions *****************************************************************/
/* VREF Trim Register (8-bit) */
#define VREF_TRM_SHIFT (0) /* Bits 0-5: Trim bits */
#define VREF_TRM_MASK (63 << VREF_TRM_SHIFT)
/* Bits 6-7: Reserved */
/* VREF Status and Control Register (8-bit) */
#define VREF_SC_MODE_LV_SHIFT (0) /* Bits 0-1: Buffer Mode selection */
#define VREF_SC_MODE_LV_MASK (3 << VREF_SC_MODE_LV_SHIFT)
# define VREF_SC_MODE_LV_BANDGAP (0 << VREF_SC_MODE_LV_SHIFT) /* Bandgap on only */
# define VREF_SC_MODE_LV_LOWPWR (1 << VREF_SC_MODE_LV_SHIFT) /* Low-power buffer enabled */
# define VREF_SC_MODE_LV_TIGHT (2 << VREF_SC_MODE_LV_SHIFT) /* Tight-regulation buffer enabled */
#define VREF_SC_VREFST (1 << 2) /* Bit 2: Internal Voltage Reference stable */
/* Bits 3-5: Reserved */
#define VREF_SC_REGEN (1 << 6) /* Bit 6: Regulator enable */
#define VREF_SC_VREFEN (1 << 7) /* Bit 7: Internal Voltage Reference enable */
/********************************************************************************************
* Public Types
********************************************************************************************/
/********************************************************************************************
* Public Data
********************************************************************************************/
/********************************************************************************************
* Public Functions
********************************************************************************************/
#endif /* __ARCH_ARM_SRC_KINETIS_KINETIS_VREFV1_H */
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