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/************************************************************************************
* arch/arm/src/lpc17xx/lpc17_adc.h
*
* Copyright (C) 2010 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_LPC17XX_LPC17_ADC_H
#define __ARCH_ARM_SRC_LPC17XX_LPC17_ADC_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
#include "lpc17_memorymap.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Register offsets *****************************************************************/
#define LPC17_ADC_CR_OFFSET 0x0000 /* A/D Control Register */
#define LPC17_ADC_GDR_OFFSET 0x0004 /* A/D Global Data Register */
#define LPC17_ADC_INTEN_OFFSET 0x000c /* A/D Interrupt Enable Register */
#define LPC17_ADC_DR_OFFSET(n) (0x0010+((n) << 2))
#define LPC17_ADC_DR0_OFFSET 0x0010 /* A/D Channel 0 Data Register */
#define LPC17_ADC_DR1_OFFSET 0x0014 /* A/D Channel 1 Data Register */
#define LPC17_ADC_DR2_OFFSET 0x0018 /* A/D Channel 2 Data Register */
#define LPC17_ADC_DR3_OFFSET 0x001c /* A/D Channel 3 Data Register */
#define LPC17_ADC_DR4_OFFSET 0x0020 /* A/D Channel 4 Data Register */
#define LPC17_ADC_DR5_OFFSET 0x0024 /* A/D Channel 5 Data Register */
#define LPC17_ADC_DR6_OFFSET 0x0028 /* A/D Channel 6 Data Register */
#define LPC17_ADC_DR7_OFFSET 0x002c /* A/D Channel 7 Data Register */
#define LPC17_ADC_STAT_OFFSET 0x0030 /* A/D Status Register */
#define LPC17_ADC_TRM_OFFSET 0x0034 /* ADC trim register */
/* Register addresses ***************************************************************/
#define LPC17_ADC_CR (LPC17_ADC_BASE+LPC17_ADC_CR_OFFSET)
#define LPC17_ADC_GDR (LPC17_ADC_BASE+LPC17_ADC_GDR_OFFSET)
#define LPC17_ADC_INTEN (LPC17_ADC_BASE+LPC17_ADC_INTEN_OFFSET)
#define LPC17_ADC_DR(n) (LPC17_ADC_BASE+LPC17_ADC_DR_OFFSET(n))
#define LPC17_ADC_DR0 (LPC17_ADC_BASE+LPC17_ADC_DR0_OFFSET)
#define LPC17_ADC_DR1 (LPC17_ADC_BASE+LPC17_ADC_DR1_OFFSET)
#define LPC17_ADC_DR2 (LPC17_ADC_BASE+LPC17_ADC_DR2_OFFSET)
#define LPC17_ADC_DR3 (LPC17_ADC_BASE+LPC17_ADC_DR3_OFFSET)
#define LPC17_ADC_DR4 (LPC17_ADC_BASE+LPC17_ADC_DR4_OFFSET)
#define LPC17_ADC_DR5 (LPC17_ADC_BASE+LPC17_ADC_DR5_OFFSET)
#define LPC17_ADC_DR6 (LPC17_ADC_BASE+LPC17_ADC_DR6_OFFSET)
#define LPC17_ADC_DR7 (LPC17_ADC_BASE+LPC17_ADC_DR7_OFFSET)
#define LPC17_ADC_STAT (LPC17_ADC_BASE+LPC17_ADC_STAT_OFFSET)
#define LPC17_ADC_TRM (LPC17_ADC_BASE+LPC17_ADC_TRM_OFFSET)
/* Register bit definitions *********************************************************/
/* A/D Control Register */
#define ADC_CR_SEL_SHIFT (0) /* Bits 0-7: Selects pins to be sampled */
#define ADC_CR_SEL_MASK (0xff << ADC_CR_SEL_MASK)
#define ADC_CR_CLKDIV_SHIFT (8) /* Bits 8-15: APB clock (PCLK_ADC0) divisor */
#define ADC_CR_CLKDIV_MASK (0xff << ADC_CR_CLKDIV_SHIFT)
#define ADC_CR_BURST (1 << 16) /* Bit 16: A/D Repeated conversions */
/* Bits 17-20: Reserved */
#define ADC_CR_PDN (1 << 21) /* Bit 21: A/D converter power-down mode */
/* Bits 22-23: Reserved */
#define ADC_CR_START_SHIFT (24) /* Bits 24-26: Control A/D conversion start */
#define ADC_CR_START_MASK (7 << ADC_CR_START_SHIFT)
# define ADC_CR_START_NOSTART (0 << ADC_CR_START_SHIFT) /* No start */
# define ADC_CR_START_NOW (1 << ADC_CR_START_SHIFT) /* Start now */
# define ADC_CR_START_P2p10 (2 << ADC_CR_START_SHIFT) /* Start edge on P2.10/EINT0/NMI */
# define ADC_CR_START_P1p27 (3 << ADC_CR_START_SHIFT) /* Start edge on P1.27/CLKOUT/USB_OVRCRn/CAP0.1 */
# define ADC_CR_START_MAT0p1 (4 << ADC_CR_START_SHIFT) /* Start edge on MAT0.1 */
# define ADC_CR_START_MAT0p3 (5 << ADC_CR_START_SHIFT) /* Start edge on MAT0.3 */
# define ADC_CR_START_MAT1p0 (6 << ADC_CR_START_SHIFT) /* Start edge on MAT1.0 */
# define ADC_CR_START_MAT1p1 (7 << ADC_CR_START_SHIFT) /* Start edge on MAT1.1 */
#define ADC_CR_EDGE (1 << 27) /* Bit 27: Start on falling edge */
/* Bits 28-31: Reserved */
/* A/D Global Data Register AND Channel 0-7 Data Register */
/* Bits 0-3: Reserved */
#define ADC_DR_RESULT_SHIFT (4) /* Bits 4-15: Result of conversion (DONE==1)*/
#define ADC_DR_RESULT_MASK (0x0fff << ADC_DR_RESULT_SHIFT)
/* Bits 16-23: Reserved */
#define ADC_DR_CHAN_SHIFT (24) /* Bits 24-26: Channel converted*/
#define ADC_DR_CHAN_MASK (3 << ADC_DR_CHN_SHIFT)
/* Bits 27-29: Reserved */
#define ADC_DR_OVERRUN (1 << 30) /* Bit 30: Conversion(s) lost/overwritten*/
#define ADC_DR_DONE (1 << 31) /* Bit 31: A/D conversion complete*/
/* A/D Interrupt Enable Register */
#define ADC_INTEN_CHAN(n) (1 << (n))
#define ADC_INTEN_CHAN0 (1 << 0) /* Bit 0: Enable ADC chan 0 complete intterrupt */
#define ADC_INTEN_CHAN1 (1 << 1) /* Bit 1: Enable ADC chan 1 complete interrupt */
#define ADC_INTEN_CHAN2 (1 << 2) /* Bit 2: Enable ADC chan 2 complete interrupt */
#define ADC_INTEN_CHAN3 (1 << 3) /* Bit 3: Enable ADC chan 3 complete interrupt */
#define ADC_INTEN_CHAN4 (1 << 4) /* Bit 4: Enable ADC chan 4 complete interrupt */
#define ADC_INTEN_CHAN5 (1 << 5) /* Bit 5: Enable ADC chan 5 complete interrupt */
#define ADC_INTEN_CHAN6 (1 << 6) /* Bit 6: Enable ADC chan 6 complete interrupt */
#define ADC_INTEN_CHAN7 (1 << 7) /* Bit 7: Enable ADC chan 7 complete interrupt */
#define ADC_INTEN_GLOBAL (1 << 8) /* Bit 8: Only the global DONE generates interrupt */
/* Bits 9-31: Reserved */
/* A/D Status Register */
#define ADC_STAT_DONE(n) (1 << (n))
#define ADC_STAT_DONE0 (1 << 0) /* Bit 0: A/D chan 0 DONE */
#define ADC_STAT_DONE1 (1 << 1) /* Bit 1: A/D chan 1 DONE */
#define ADC_STAT_DONE2 (1 << 2) /* Bit 2: A/D chan 2 DONE */
#define ADC_STAT_DONE3 (1 << 3) /* Bit 3: A/D chan 3 DONE */
#define ADC_STAT_DONE4 (1 << 4) /* Bit 4: A/D chan 4 DONE */
#define ADC_STAT_DONE5 (1 << 5) /* Bit 5: A/D chan 5 DONE */
#define ADC_STAT_DONE6 (1 << 6) /* Bit 6: A/D chan 6 DONE */
#define ADC_STAT_DONE7 (1 << 7) /* Bit 7: A/D chan 7 DONE */
#define ADC_STAT_OVERRUN(n) ((1 << (n)) + 8)
#define ADC_STAT_OVERRUN0 (1 << 8) /* Bit 8: A/D chan 0 OVERRUN */
#define ADC_STAT_OVERRUN1 (1 << 9) /* Bit 9: A/D chan 1 OVERRUN */
#define ADC_STAT_OVERRUN2 (1 << 10) /* Bit 10: A/D chan 2 OVERRUN */
#define ADC_STAT_OVERRUN3 (1 << 11) /* Bit 11: A/D chan 3 OVERRUN */
#define ADC_STAT_OVERRUN4 (1 << 12) /* Bit 12: A/D chan 4 OVERRUN */
#define ADC_STAT_OVERRUN5 (1 << 13) /* Bit 13: A/D chan 5 OVERRUN */
#define ADC_STAT_OVERRUN6 (1 << 14) /* Bit 14: A/D chan 6 OVERRUN */
#define ADC_STAT_OVERRUN7 (1 << 15) /* Bit 15: A/D chan 7 OVERRUN */
#define ADC_STAT_INT (1 << 16) /* Bit 15: A/D interrupt */
/* Bits 17-31: Reserved */
/* ADC trim register */
/* Bits 0-3: Reserved */
#define ADC_TRM_ADCOFFS_SHIFT (4) /* Bits 4-7: A/D offset trim bits */
#define ADC_TRM_ADCOFFS_MASK (15 << ADC_TRM_ADCOFFS_SHIFT)
#define ADC_TRM_TRIM_SHIFT (8) /* Bits 8-11: Written-to by boot code */
#define ADC_TRM_TRIM_MASK (15 << ADC_TRM_TRIM_SHIFT)
/* Bits 12-31: Reserved */
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_ARM_SRC_LPC17XX_LPC17_ADC_H */
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