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/************************************************************************************
* arch/mips/src/pic32mx/pic32mx-cvr.h
*
* Copyright (C) 2011 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 __ARCH_MIPS_SRC_PIC32MX_PIC32MX_CVR_H
#define __ARCH_MIPS_SRC_PIC32MX_PIC32MX_CVR_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
#include "pic32mx-memorymap.h"
/************************************************************************************
* Pre-Processor Definitions
************************************************************************************/
/* Register Offsets *****************************************************************/
#define PIC32MX_CVR_CON_OFFSET 0x0000 /* Comparator voltage reference control register */
#define PIC32MX_CVR_CONCLR_OFFSET 0x0004 /* Comparator voltage reference control clear register */
#define PIC32MX_CVR_CONSET_OFFSET 0x0008 /* Comparator voltage reference control set register */
#define PIC32MX_CVR_CONINV_OFFSET 0x000c /* Comparator voltage reference control invert register */
/* Register Addresses ***************************************************************/
#define PIC32MX_CVR_CON (PIC32MX_CVR_K1BASE+PIC32MX_CVR_CON_OFFSET)
#define PIC32MX_CVR_CONCLR (PIC32MX_CVR_K1BASE+PIC32MX_CVR_CONCLR_OFFSET)
#define PIC32MX_CVR_CONSET (PIC32MX_CVR_K1BASE+PIC32MX_CVR_CONSET_OFFSET)
#define PIC32MX_CVR_CONINV (PIC32MX_CVR_K1BASE+PIC32MX_CVR_CONINV_OFFSET)
/* Register Bit-Field Definitions ***************************************************/
/* Comparator voltage reference control register */
#define CVR_CON_CVR_SHIFT (0) /* Bits 0-3: CVREF value selection */
#define CVR_CON_CVR_MASK (15 << CVR_CON_CVR_SHIFT)
# define CVR_CON_CVR(n) ((n) << CVR_CON_CVR_SHIFT)
#define CVR_CON_CVRSS (1 << 4) /* Bit 4: CVREF source selection */
#define CVR_CON_CVRR (1 << 5) /* Bit 5: CVREF range selection */
#define CVR_CON_CVROE (1 << 6) /* Bit 6: CVREFOUT enable */
#ifdef CHIP_VRFSEL
# define CVR_CON_BGSEL_SHIFT (8) /* Bits 8-9: Band gap reference source */
# define CVR_CON_BGSEL_MASK (3 << CVR_CON_CVR_SHIFT)
# define CVR_CON_BGSEL_1p2V (0 << CVR_CON_CVR_SHIFT) /* IVREF = 1.2V (nominal) */
# define CVR_CON_BGSEL_0p6V (1 << CVR_CON_CVR_SHIFT) /* IVREF = 0.6V (nominal) */
# define CVR_CON_BGSEL_0p2V (2 << CVR_CON_CVR_SHIFT) /* IVREF = 0.2V (nominal) */
# define CVR_CON_BGSEL_VREF (3 << CVR_CON_CVR_SHIFT) /* VREF = VREF+ */
# define CVR_CON_VREFSEL (1 << 10) /* Bit 10: Voltage reference select */
#endif
#define CVR_CON_ON (1 << 15) /* Bit 15: Comparator voltage reference on */
/************************************************************************************
* Public Types
************************************************************************************/
#ifndef __ASSEMBLY__
/************************************************************************************
* Inline Functions
************************************************************************************/
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_MIPS_SRC_PIC32MX_PIC32MX_CVR_H */
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