/****************************************************************************************
* arch/arm/src/sam3u/sam3u_adc.h
*
* Copyright (C) 2009 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_ARM_SRC_SAM3U_SAM3U_ADC_H
#define __ARCH_ARM_SRC_SAM3U_SAM3U_ADC_H
/****************************************************************************************
* Included Files
****************************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
#include "sam3u_memorymap.h"
/****************************************************************************************
* Pre-processor Definitions
****************************************************************************************/
/* ADC register offsets ****************************************************************/
#define SAM3U_ADC_CR_OFFSET 0x00 /* Control Register (Both) */
#define SAM3U_ADC_MR_OFFSET 0x04 /* Mode Register (Both) */
/* 0x08: Reserved */
/* 0x0c: Reserved */
#define SAM3U_ADC_CHER_OFFSET 0x10 /* Channel Enable Register (Both) */
#define SAM3U_ADC_CHDR_OFFSET 0x14 /* Channel Disable Register (Both) */
#define SAM3U_ADC_CHSR_OFFSET 0x18 /* Channel Status Register (Both) */
#define SAM3U_ADC_SR_OFFSET 0x1c /* Status Register (Both) */
#define SAM3U_ADC_LCDR_OFFSET 0x20 /* Last Converted Data Register (Both) */
#define SAM3U_ADC_IER_OFFSET 0x24 /* Interrupt Enable Register (Both) */
#define SAM3U_ADC_IDR_OFFSET 0x28 /* Interrupt Disable Register (Both) */
#define SAM3U_ADC_IMR_OFFSET 0x2c /* Interrupt Mask Register (Both) */
#define SAM3U_ADC_CDR_OFFSET(n) (0x30+((n)<<2))
#define SAM3U_ADC_CDR0_OFFSET 0x30 /* Channel Data Register 0 (Both) */
#define SAM3U_ADC_CDR1_OFFSET 0x34 /* Channel Data Register 1 (Both) */
#define SAM3U_ADC_CDR2_OFFSET 0x38 /* Channel Data Register 2 (Both) */
#define SAM3U_ADC_CDR3_OFFSET 0x3c /* Channel Data Register 3 (Both) */
#define SAM3U_ADC_CDR4_OFFSET 0x40 /* Channel Data Register 4 (Both) */
#define SAM3U_ADC_CDR5_OFFSET 0x44 /* Channel Data Register 5 (Both) */
#define SAM3U_ADC_CDR6_OFFSET 0x48 /* Channel Data Register 6 (Both) */
#define SAM3U_ADC_CDR7_OFFSET 0x4c /* Channel Data Register 7 (Both) */
#define SAM3U_ADC12B_ACR_OFFSET 0x64 /* Analog Control Register (ADC12B only) */
#define SAM3U_ADC12B_EMR_OFFSET 0x68 /* Extended Mode Register (ADC12B only) */
/* ADC register adresses ***************************************************************/
#define SAM3U_ADC12B_CR (SAM3U_ADC12B_BASE+SAM3U_ADC_CR_OFFSET)
#define SAM3U_ADC12B_MR (SAM3U_ADC12B_BASE+SAM3U_ADC_MR_OFFSET)
#define SAM3U_ADC12B_CHER (SAM3U_ADC12B_BASE+SAM3U_ADC_CHER_OFFSET)
#define SAM3U_ADC12B_CHDR (SAM3U_ADC12B_BASE+SAM3U_ADC_CHDR_OFFSET)
#define SAM3U_ADC12B_CHSR (SAM3U_ADC12B_BASE+SAM3U_ADC_CHSR_OFFSET)
#define SAM3U_ADC12B_SR (SAM3U_ADC12B_BASE+SAM3U_ADC_SR_OFFSET)
#define SAM3U_ADC12B_LCDR_ (SAM3U_ADC12B_BASE+SAM3U_ADC_LCDR_OFFSET)
#define SAM3U_ADC12B_IER (SAM3U_ADC12B_BASE+SAM3U_ADC_IER_OFFSET)
#define SAM3U_ADC12B_IDR (SAM3U_ADC12B_BASE+SAM3U_ADC_IDR_OFFSET)
#define SAM3U_ADC12B_IMR (SAM3U_ADC12B_BASE+SAM3U_ADC_IMR_OFFSET)
#define SAM3U_ADC12B_CDR(n)) (SAM3U_ADC12B_BASE+SAM3U_ADC_CDR_OFFSET(n))
#define SAM3U_ADC12B_CDR0 (SAM3U_ADC12B_BASE+SAM3U_ADC_CDR0_OFFSET)
#define SAM3U_ADC12B_CDR1 (SAM3U_ADC12B_BASE+SAM3U_ADC_CDR1_OFFSET)
#define SAM3U_ADC12B_CDR2 (SAM3U_ADC12B_BASE+SAM3U_ADC_CDR2_OFFSET)
#define SAM3U_ADC12B_CDR3 (SAM3U_ADC12B_BASE+SAM3U_ADC_CDR3_OFFSET)
#define SAM3U_ADC12B_CDR4 (SAM3U_ADC12B_BASE+SAM3U_ADC_CDR4_OFFSET)
#define SAM3U_ADC12B_CDR5 (SAM3U_ADC12B_BASE+SAM3U_ADC_CDR5_OFFSET)
#define SAM3U_ADC12B_CDR6 (SAM3U_ADC12B_BASE+SAM3U_ADC_CDR6_OFFSET)
#define SAM3U_ADC12B_CDR7 (SAM3U_ADC12B_BASE+SAM3U_ADC_CDR7_OFFSET)
#define SAM3U_ADC12B_ACR (SAM3U_ADC12B_BASE+SAM3U_ADC12B_ACR_OFFSET)
#define SAM3U_ADC12B_EMR (SAM3U_ADC12B_BASE+SAM3U_ADC12B_EMR_OFFSET)
#define SAM3U_ADC_CR (SAM3U_ADC_BASE+SAM3U_ADC_CR_OFFSET)
#define SAM3U_ADC_MR (SAM3U_ADC_BASE+SAM3U_ADC_MR_OFFSET)
#define SAM3U_ADC_CHER (SAM3U_ADC_BASE+SAM3U_ADC_CHER_OFFSET)
#define SAM3U_ADC_CHDR (SAM3U_ADC_BASE+SAM3U_ADC_CHDR_OFFSET)
#define SAM3U_ADC_CHSR (SAM3U_ADC_BASE+SAM3U_ADC_CHSR_OFFSET)
#define SAM3U_ADC_SR (SAM3U_ADC_BASE+SAM3U_ADC_SR_OFFSET)
#define SAM3U_ADC_LCDR (SAM3U_ADC_BASE+SAM3U_ADC_LCDR_OFFSET)
#define SAM3U_ADC_IER (SAM3U_ADC_BASE+SAM3U_ADC_IER_OFFSET)
#define SAM3U_ADC_IDR (SAM3U_ADC_BASE+SAM3U_ADC_IDR_OFFSET)
#define SAM3U_ADC_IMR (SAM3U_ADC_BASE+SAM3U_ADC_IMR_OFFSET)
#define SAM3U_ADC_CDR(n)) (SAM3U_ADC_BASE+SAM3U_ADC_CDR_OFFSET(n))
#define SAM3U_ADC_CDR0 (SAM3U_ADC_BASE+SAM3U_ADC_CDR0_OFFSET)
#define SAM3U_ADC_CDR1 (SAM3U_ADC_BASE+SAM3U_ADC_CDR1_OFFSET)
#define SAM3U_ADC_CDR2 (SAM3U_ADC_BASE+SAM3U_ADC_CDR2_OFFSET)
#define SAM3U_ADC_CDR3 (SAM3U_ADC_BASE+SAM3U_ADC_CDR3_OFFSET)
#define SAM3U_ADC_CDR4 (SAM3U_ADC_BASE+SAM3U_ADC_CDR4_OFFSET)
#define SAM3U_ADC_CDR5 (SAM3U_ADC_BASE+SAM3U_ADC_CDR5_OFFSET)
#define SAM3U_ADC_CDR6 (SAM3U_ADC_BASE+SAM3U_ADC_CDR6_OFFSET)
#define SAM3U_ADC_CDR7 (SAM3U_ADC_BASE+SAM3U_ADC_CDR7_OFFSET)
/* ADC register bit definitions ********************************************************/
/* ADC12B Control Register and ADC(10B) Control Register common bit-field definitions */
#define ADC_CR_SWRST (1 << 0) /* Bit 0: Software Reset */
#define ADC_CR_START (1 << 1) /* Bit 1: Start Conversion */
/* ADC12B Mode Register and ADC(10B) Mode Register common bit-field definitions */
#define ADC_MR_TRGEN (1 << 0) /* Bit 0: Trigger Enable */
#define ADC_MR_TRGSEL_SHIFT (1) /* Bits 1-3: Trigger Selection */
#define ADC_MR_TRGSEL_MASK (7 << ADC_MR_TRGSEL_SHIFT)
#define ADC_MR_LOWRES (1 << 4) /* Bit 4: Resolution */
#define ADC_MR_SLEEP (1 << 5) /* Bit 5: Sleep Mode */
#define ADC_MR_PRESCAL_SHIFT (8) /* Bits 8-15: Prescaler Rate Selection */
#define ADC_MR_PRESCAL_MASK (0xff << ADC_MR_PRESCAL_SHIFT)
#define ADB12B_MRSTARTUP_SHIFT (16) /* Bits 16-23: Start Up Time (ADC12B) */
#define ADB12B_MRSTARTUP_MASK (0xff << ADB12B_MRSTARTUP_SHIFT
#define ADB10B_MRSTARTUP_SHIFT (16) /* Bits 16-22: Start Up Time (ADC10B) */
#define ADB10B_MRSTARTUP_MASK (0x7f << ADB10B_MRSTARTUP_SHIFT)
#define ADC_MR_SHTIM_SHIFT (24) /* Bits 24-27: Sample & Hold Time */
#define ADC_MR_SHTIM_MASK (15 << ADC_MR_SHTIM_SHIFT)
/* ADC12B Channel Enable Register, ADC12B Channel Disable Register, ADC12B Channel
* Status Register, ADC(10B) Channel Enable Register, ADC(10B) Channel Disable Register,
* and ADC(10B) Channel Status Register common bit-field definitions
*/
#define ADC_CH(n) (1 << (n))
#define ADC_CH0 (1 << 0) /* Bit 0: Channel x Enable */
#define ADC_CH1 (1 << 1) /* Bit 1: Channel x Enable */
#define ADC_CH2 (1 << 2) /* Bit 2: Channel x Enable */
#define ADC_CH3 (1 << 3) /* Bit 3: Channel x Enable */
#define ADC_CH4 (1 << 4) /* Bit 4: Channel x Enable */
#define ADC_CH5 (1 << 5) /* Bit 5: Channel x Enable */
#define ADC_CH6 (1 << 6) /* Bit 6: Channel x Enable */
#define ADC_CH7 (1 << 7) /* Bit 7: Channel x Enable */
/* ADC12B Analog Control Register (ADC12B only) */
#define ADC12B_ACR_GAIN_SHIFT (0) /* Bits 0-1: Input Gain */
#define ADC12B_ACR_GAIN_MASK (3 << ADC12B_ACR_GAIN_SHIFT)
#define ADC12B_ACR_IBCTL_SHIFT (8) /* Bits 8-9: Bias Current Control */
#define ADC12B_ACR_IBCTL_MASK (3 << ADC12B_ACR_IBCTL_SHIFT)
#define ADC12B_ACR_DIFF (1 << 16) /* Bit 16: Differential Mode */
#define ADC12B_ACR_OFFSET (1 << 17) /* Bit 17: Input OFFSET */
/* ADC12B Extended Mode Register (ADC12B only) */
#define ADC12B_EMR_OFFMODES (1 << 0) /* Bit 0: Off Mode if Sleep Bit (ADC12B_MR) = 1 */
#define ADC12B_EMR_OFFMSTIME_SHIFT (16) /* Bits 16-23: Startup Time */
#define ADC12B_EMR_OFFMSTIME_MASK (0xff << ADC12B_EMR_OFFMSTIME_SHIFT)
/* ADC12B Status Register , ADC12B Interrupt Enable Register, ADC12B Interrupt
* Disable Register, ADC12B Interrupt Mask Register, ADC(10B) Status Register,
* ADC(10B) Interrupt Enable Register, ADC(10B) Interrupt Disable Register, and
* ADC(10B) Interrupt Mask Register common bit-field definitions
*/
#define ADC_INT_EOC(n) (1<<(n))
#define ADC_INT_EOC0 (1 << 0) /* Bit 0: End of Conversion 0 */
#define ADC_INT_EOC1 (1 << 1) /* Bit 1: End of Conversion 1 */
#define ADC_INT_EOC2 (1 << 2) /* Bit 2: End of Conversion 2 */
#define ADC_INT_EOC3 (1 << 3) /* Bit 3: End of Conversion 3 */
#define ADC_INT_EOC4 (1 << 4) /* Bit 4: End of Conversion 4 */
#define ADC_INT_EOC5 (1 << 5) /* Bit 5: End of Conversion 5 */
#define ADC_INT_EOC6 (1 << 6) /* Bit 6: End of Conversion 6 */
#define ADC_INT_EOC7 (1 << 7) /* Bit 0: End of Conversion 7 */
#define ADC_INT_OVRE(n) (1<<((n)+8))
#define ADC_INT_OVRE0 (1 << 8) /* Bit 8: Overrun Error 0 */
#define ADC_INT_OVRE1 (1 << 9) /* Bit 9: Overrun Error 1 */
#define ADC_INT_OVRE2 (1 << 10) /* Bit 10: Overrun Error 2 */
#define ADC_INT_OVRE3 (1 << 11) /* Bit 11: Overrun Error 3 */
#define ADC_INT_OVRE4 (1 << 12) /* Bit 12: Overrun Error 4 */
#define ADC_INT_OVRE5 (1 << 13) /* Bit 13: Overrun Error 5 */
#define ADC_INT_OVRE6 (1 << 14) /* Bit 14: Overrun Error 6 */
#define ADC_INT_OVRE7 (1 << 15) /* Bit 15: Overrun Error 7 */
#define ADC_INT_DRDY (1 << 16) /* Bit 16: Data Ready */
#define ADC_INT_GOVRE (1 << 17) /* Bit 17: General Overrun Error */
#define ADC_INT_ENDRX (1 << 18) /* Bit 18: End of RX Buffer */
#define ADC_INT_RXBUFF (1 << 19) /* Bit 19: RX Buffer Full */
/* ADC12B Last Converted Data Register */
#define ADC12B_LCDR_DATA_SHIFT (0) /* Bits 0-11: Last Data Converted */
#define ADC12B_LCDR_DATA_MASK (0xfff << ADC12B_LCDR_DATA_SHIFT)
/* ADC(10B) Last Converted Data Register */
#define ADC10B_LCDR_DATA_SHIFT (0) /* Bits 0-9: Last Data Converted */
#define ADC10B_LCDR_DATA_MASK (0x1ff << ADC10B_LCDR_DATA_SHIFT)
/* ADC12B Channel Data Register */
#define ADC12B_CDR_DATA_SHIFT (0) /* Bits 0-11: Converted Data */
#define ADC12B_CDR_DATA_MASK (0xfff << ADC12B_CDR_DATA_SHIFT)
/* ADC(10B) Channel Data Register */
#define ADC10B_CDR_DATA_SHIFT (0) /* Bits 0-9: Converted Data */
#define ADC10B_CDR_DATA_MASK (0x1ff << ADC10B_CDR_DATA_SHIFT)
/****************************************************************************************
* Public Types
****************************************************************************************/
/****************************************************************************************
* Public Data
****************************************************************************************/
/****************************************************************************************
* Public Functions
****************************************************************************************/
#endif /* __ARCH_ARM_SRC_SAM3U_SAM3U_ADC_H */
