679 lines
20 KiB
C
679 lines
20 KiB
C
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/**
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* \file
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*
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* \brief SAM Operational Amplifier Controller (OPAMP) Driver
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*
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* Copyright (C) 2014-2015 Atmel Corporation. All rights reserved.
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*
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* \asf_license_start
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*
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* \page License
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of Atmel may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* 4. This software may only be redistributed and used in connection with an
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* Atmel microcontroller product.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT 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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* \asf_license_stop
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*
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*/
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/*
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* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
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*/
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#ifndef OPAMP_H_INCLUDED
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#define OPAMP_H_INCLUDED
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/**
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* \defgroup asfdoc_sam0_opamp_group SAM Operational Amplifier Controller (OPAMP) Driver
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*
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* This driver for Atmel® | SMART ARM®-based microcontrollers provides an interface for the configuration
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* and management of the device's Operational Amplifier Controller functionality.
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*
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* The following peripheral is used by this module:
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* - OPAMP (Operational Amplifier Controller)
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*
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* The following devices can use this module:
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* - Atmel | SMART SAM L21
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*
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* The outline of this documentation is as follows:
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* - \ref asfdoc_sam0_opamp_prerequisites
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* - \ref asfdoc_sam0_opamp_module_overview
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* - \ref asfdoc_sam0_opamp_special_considerations
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* - \ref asfdoc_sam0_opamp_extra_info
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* - \ref asfdoc_sam0_opamp_examples
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* - \ref asfdoc_sam0_opamp_api_overview
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*
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*
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* \section asfdoc_sam0_opamp_prerequisites Prerequisites
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*
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* There are no prerequisites for this module.
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*
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*
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* \section asfdoc_sam0_opamp_module_overview Module Overview
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*
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* The OPAMP is an individually configurable low power, general purpose operational
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* amplifier offering a high degree of flexibility and rail-to-rail inputs.
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*
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* Each operational amplifier can be configured in standalone operational amplifier
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* and operational amplifier with built-in feedback. All OPAMPs can be cascaded
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* to support circuits such as differential amplifiers.
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* \note For more detail configuration reference, refer to the "Built-in Modes"
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* section in the device datasheet.
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*
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* Each OPAMP has one positive and one negative input which can be flexible chosen
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* from analog input pins including the output of another OPAMP, internal inputs
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* such as the DAC or the resistor ladder, and the ground.
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*
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* Each OPAMP output can be selected as input for AC or ADC, also available
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* on I/O pins.
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*
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* Four modes are available to select the trade-off between speed and power
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* consumption to best fit the application requirements and optimize the power
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* consumption.
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*
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* \section asfdoc_sam0_opamp_special_considerations Special Considerations
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*
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* There are no special considerations for this module.
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*
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*
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* \section asfdoc_sam0_opamp_extra_info Extra Information
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*
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* For extra information, see \ref asfdoc_sam0_opamp_extra. This includes:
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* - \ref asfdoc_sam0_opamp_extra_acronyms
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* - \ref asfdoc_sam0_opamp_extra_dependencies
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* - \ref asfdoc_sam0_opamp_extra_errata
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* - \ref asfdoc_sam0_opamp_extra_history
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*
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*
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* \section asfdoc_sam0_opamp_examples Examples
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*
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* For a list of examples related to this driver, see
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* \ref asfdoc_sam0_opamp_exqsg.
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*
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*
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* \section asfdoc_sam0_opamp_api_overview API Overview
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* @{
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*/
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#include <compiler.h>
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#include <system.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief OPAMP ID number enum.
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*/
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enum opamp_id {
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/** OPAMP 0 */
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OPAMP_0 = 0,
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/** OPAMP 1 */
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OPAMP_1 = 1,
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/** OPAMP 2 */
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OPAMP_2 = 2,
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/** OPAMP number */
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OPAMP_NUM,
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};
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/**
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* \brief Negative input MUX selection configuration enum.
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*
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* Enum for the negative input of OPAMP0.
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*/
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enum opamp0_neg_mux {
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/** Negative I/O pin 0 */
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OPAMP0_NEG_MUX_PIN0 = OPAMP_OPAMPCTRL_MUXNEG(0),
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/** Resistor ladder 0 taps */
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OPAMP0_NEG_MUX_TAP0 = OPAMP_OPAMPCTRL_MUXNEG(1),
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/** OPAMP output */
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OPAMP0_NEG_MUX_OUT0 = OPAMP_OPAMPCTRL_MUXNEG(2),
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/** DAC output */
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OPAMP0_NEG_MUX_DAC = OPAMP_OPAMPCTRL_MUXNEG(3),
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};
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/**
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* \brief Negative input MUX selection configuration enum.
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*
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* Enum for the negative input of OPAMP1.
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*/
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enum opamp1_neg_mux {
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/** Negative I/O pin 1 */
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OPAMP1_NEG_MUX_PIN1 = OPAMP_OPAMPCTRL_MUXNEG(0),
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/** Resistor ladder 1 taps */
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OPAMP1_NEG_MUX_TAP1 = OPAMP_OPAMPCTRL_MUXNEG(1),
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/** OPAMP output */
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OPAMP1_NEG_MUX_OUT1 = OPAMP_OPAMPCTRL_MUXNEG(2),
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/** DAC output */
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OPAMP1_NEG_MUX_DAC = OPAMP_OPAMPCTRL_MUXNEG(3),
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};
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/**
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* \brief Negative input MUX selection configuration enum.
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*
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* Enum for the negative input of OPAMP2.
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*/
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enum opamp2_neg_mux {
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/** Negative I/O pin 2 */
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OPAMP2_NEG_MUX_PIN2 = OPAMP_OPAMPCTRL_MUXNEG(0),
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/** Resistor ladder 2 taps */
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OPAMP2_NEG_MUX_TAP2 = OPAMP_OPAMPCTRL_MUXNEG(1),
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/** OPAMP output */
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OPAMP2_NEG_MUX_OUT2 = OPAMP_OPAMPCTRL_MUXNEG(2),
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/** Negative I/O pin 0 */
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OPAMP2_NEG_MUX_PIN0 = OPAMP_OPAMPCTRL_MUXNEG(3),
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/** Negative I/O pin 1 */
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OPAMP2_NEG_MUX_PIN1 = OPAMP_OPAMPCTRL_MUXNEG(4),
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/** DAC output */
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OPAMP2_NEG_MUX_DAC = OPAMP_OPAMPCTRL_MUXNEG(5),
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};
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/**
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* \brief Positive input MUX selection configuration enum.
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*
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* Enum for the positive input of OPAMP0.
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*/
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enum opamp0_pos_mux {
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/** Positive I/O pin 0 */
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OPAMP0_POS_MUX_PIN0 = OPAMP_OPAMPCTRL_MUXPOS(0),
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/** Resistor ladder 0 taps */
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OPAMP0_POS_MUX_TAP0 = OPAMP_OPAMPCTRL_MUXPOS(1),
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/** DAC output */
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OPAMP0_POS_MUX_DAC = OPAMP_OPAMPCTRL_MUXPOS(2),
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/** Ground */
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OPAMP0_POS_MUX_GND = OPAMP_OPAMPCTRL_MUXPOS(3),
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};
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/**
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* \brief Positive input MUX selection configuration enum.
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*
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* Enum for the positive input of OPAMP1.
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*/
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enum opamp1_pos_mux {
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/** Positive I/O pin 1 */
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OPAMP1_POS_MUX_PIN1 = OPAMP_OPAMPCTRL_MUXPOS(0),
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/** Resistor ladder 1 taps */
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OPAMP1_POS_MUX_TAP1 = OPAMP_OPAMPCTRL_MUXPOS(1),
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/** OPAMP0 output */
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OPAMP1_POS_MUX_OUT0 = OPAMP_OPAMPCTRL_MUXPOS(2),
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/** Ground */
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OPAMP1_POS_MUX_GND = OPAMP_OPAMPCTRL_MUXPOS(3),
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};
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/**
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* \brief Positive input MUX selection configuration enum.
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*
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* Enum for the positive input of OPAMP2.
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*/
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enum opamp2_pos_mux {
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/** Positive I/O pin 2 */
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OPAMP2_POS_MUX_PIN2 = OPAMP_OPAMPCTRL_MUXPOS(0),
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/** Resistor ladder 2 taps */
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OPAMP2_POS_MUX_TAP2 = OPAMP_OPAMPCTRL_MUXPOS(1),
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/** OPAMP1 output */
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OPAMP2_POS_MUX_OUT1 = OPAMP_OPAMPCTRL_MUXPOS(2),
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/** Ground */
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OPAMP2_POS_MUX_GND = OPAMP_OPAMPCTRL_MUXPOS(3),
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/** Positive I/O pin 0 */
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OPAMP2_POS_MUX_PIN0 = OPAMP_OPAMPCTRL_MUXPOS(4),
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/** Positive I/O pin 1 */
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OPAMP2_POS_MUX_PIN1 = OPAMP_OPAMPCTRL_MUXPOS(5),
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/** Resistor ladder 0 taps */
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OPAMP2_POS_MUX_TAP0 = OPAMP_OPAMPCTRL_MUXPOS(6),
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};
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/**
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* \brief Potentiometer selection MUX configuration enum.
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*
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* Enum for the potentiometer selection of OPAMP 0 to 2.
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*/
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enum opamp_pot_mux {
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/** Gain = R2/R1 = 1/7 */
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OPAMP_POT_MUX_14R_2R = OPAMP_OPAMPCTRL_POTMUX(0),
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/** Gain = R2/R1 = 1/3 */
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OPAMP_POT_MUX_12R_4R = OPAMP_OPAMPCTRL_POTMUX(1),
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/** Gain = R2/R1 = 1 */
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OPAMP_POT_MUX_8R_8R = OPAMP_OPAMPCTRL_POTMUX(2),
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/** Gain = R2/R1 = 1 + 2/3 */
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OPAMP_POT_MUX_6R_10R = OPAMP_OPAMPCTRL_POTMUX(3),
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/** Gain = R2/R1 = 3 */
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OPAMP_POT_MUX_4R_12R = OPAMP_OPAMPCTRL_POTMUX(4),
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/** Gain = R2/R1 = 4 + 1/3 */
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OPAMP_POT_MUX_3R_13R = OPAMP_OPAMPCTRL_POTMUX(5),
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/** Gain = R2/R1 = 7 */
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OPAMP_POT_MUX_2R_14R = OPAMP_OPAMPCTRL_POTMUX(6),
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/** Gain = R2/R1 = 15 */
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OPAMP_POT_MUX_R_15R = OPAMP_OPAMPCTRL_POTMUX(7),
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};
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/**
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* \brief Resistor 1 MUX selection configuration enum.
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*
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* Enum for the Resistor 1 of OPAMP0.
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*/
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enum opamp0_res1_mux {
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/** Positive input of OPAMP0 */
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OPAMP0_RES1_MUX_POS_PIN0 = OPAMP_OPAMPCTRL_RES1MUX(0),
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/** Negative input of OPAMP0 */
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OPAMP0_RES1_MUX_NEG_PIN0 = OPAMP_OPAMPCTRL_RES1MUX(1),
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/** DAC output */
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OPAMP0_RES1_MUX_DAC = OPAMP_OPAMPCTRL_RES1MUX(2),
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/** Ground */
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OPAMP0_RES1_MUX_GND = OPAMP_OPAMPCTRL_RES1MUX(3),
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};
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/**
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* \brief Resistor 1 MUX selection configuration enum.
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*
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* Enum for the Resistor 1 of OPAMP1.
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*/
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enum opamp1_res1_mux {
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/** Positive input of OPAMP1 */
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OPAMP1_RES1_MUX_POS_PIN0 = OPAMP_OPAMPCTRL_RES1MUX(0),
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/** Negative input of OPAMP1 */
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OPAMP1_RES1_MUX_NEG_PIN0 = OPAMP_OPAMPCTRL_RES1MUX(1),
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/** OPAMP0 output */
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OPAMP1_RES1_MUX_OUT0 = OPAMP_OPAMPCTRL_RES1MUX(2),
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/** Ground */
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OPAMP1_RES1_MUX_GND = OPAMP_OPAMPCTRL_RES1MUX(3),
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};
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/**
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* \brief Resistor 1 MUX selection configuration enum.
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*
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* Enum for the Resistor 1 of OPAMP2.
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*/
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enum opamp2_res1_mux {
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/** Positive input of OPAMP2 */
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OPAMP2_RES1_MUX_POS_PIN0 = OPAMP_OPAMPCTRL_RES1MUX(0),
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/** Negative input of OPAMP2 */
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OPAMP2_RES1_MUX_NEG_PIN0 = OPAMP_OPAMPCTRL_RES1MUX(1),
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/** OPAMP1 output */
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OPAMP2_RES1_MUX_OUT1 = OPAMP_OPAMPCTRL_RES1MUX(2),
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/** Ground */
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OPAMP2_RES1_MUX_GND = OPAMP_OPAMPCTRL_RES1MUX(3),
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};
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/**
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* \brief Bias mode selection MUX configuration enum.
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*
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* Enum for the Bias mode selection of OPAMP 0 to 2.
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*/
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enum opamp_bias_selection {
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/** Minimum current consumption but the slowest mode */
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OPAMP_BIAS_MODE_0 = OPAMP_OPAMPCTRL_BIAS(0),
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/** Low current consumption, slow speed */
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OPAMP_BIAS_MODE_1 = OPAMP_OPAMPCTRL_BIAS(1),
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/** High current consumption, fast speed */
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OPAMP_BIAS_MODE_2 = OPAMP_OPAMPCTRL_BIAS(2),
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/** Maximum current consumption but the fastest mode */
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OPAMP_BIAS_MODE_3 = OPAMP_OPAMPCTRL_BIAS(3),
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};
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/**
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* \brief OPAMP 0 to 2 common configuration structure.
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*
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|
* Common configuration structure for OPAMP 0 to 2.
|
||
|
|
*/
|
||
|
|
struct opamp_config_common {
|
||
|
|
/** Potentiometer selection */
|
||
|
|
enum opamp_pot_mux potentiometer_selection;
|
||
|
|
/** If \c true, R1 connected to RES1MUX */
|
||
|
|
bool r1_enable;
|
||
|
|
/** If \c true, resistor ladder to V<SUB>CC</SUB> */
|
||
|
|
bool r2_vcc;
|
||
|
|
/** If \c true, resistor ladder to output */
|
||
|
|
bool r2_out;
|
||
|
|
/** If \c true, the OPAMPx is enabled when a peripheral is requesting
|
||
|
|
* the OPAMPx to be used as an input. The OPAMPx is
|
||
|
|
* disabled if no peripheral is requesting it as an input. */
|
||
|
|
bool on_demand;
|
||
|
|
/** If \c true, the OPAMPx is not stopped during sleep
|
||
|
|
* mode when triggered */
|
||
|
|
bool run_in_standby;
|
||
|
|
/** Bias mode selection */
|
||
|
|
enum opamp_bias_selection bias_value;
|
||
|
|
/** If \c true, OPAMP output is connected to the ADC or AC input */
|
||
|
|
bool analog_out;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief OPAMP 0 configuration structure.
|
||
|
|
*
|
||
|
|
* Configuration structure for OPAMP 0.
|
||
|
|
*/
|
||
|
|
struct opamp0_config {
|
||
|
|
/** Negative input MUX selection */
|
||
|
|
enum opamp0_neg_mux negative_input;
|
||
|
|
/** Positive input MUX selection */
|
||
|
|
enum opamp0_pos_mux positive_input;
|
||
|
|
/** Resistor 1 MUX selection */
|
||
|
|
enum opamp0_res1_mux r1_connection;
|
||
|
|
/** If \c true, the comparator will continue to sample during sleep
|
||
|
|
* mode when triggered */
|
||
|
|
struct opamp_config_common config_common;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief OPAMP 1 configuration structure.
|
||
|
|
*
|
||
|
|
* Configuration structure for OPAMP 1.
|
||
|
|
*/
|
||
|
|
struct opamp1_config {
|
||
|
|
/** Negative input MUX selection */
|
||
|
|
enum opamp1_neg_mux negative_input;
|
||
|
|
/** Positive input MUX selection */
|
||
|
|
enum opamp1_pos_mux positive_input;
|
||
|
|
/** Resistor 1 MUX selection */
|
||
|
|
enum opamp1_res1_mux r1_connection;
|
||
|
|
/** If \c true, the comparator will continue to sample during sleep
|
||
|
|
* mode when triggered */
|
||
|
|
struct opamp_config_common config_common;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief OPAMP 2 configuration structure.
|
||
|
|
*
|
||
|
|
* Configuration structure for OPAMP 2.
|
||
|
|
*/
|
||
|
|
struct opamp2_config {
|
||
|
|
/** Negative input MUX selection */
|
||
|
|
enum opamp2_neg_mux negative_input;
|
||
|
|
/** Positive input MUX selection */
|
||
|
|
enum opamp2_pos_mux positive_input;
|
||
|
|
/** Resistor 1 MUX selection */
|
||
|
|
enum opamp2_res1_mux r1_connection;
|
||
|
|
/** If \c true, the comparator will continue to sample during sleep
|
||
|
|
* mode when triggered */
|
||
|
|
struct opamp_config_common config_common;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Initializes OPAMP module.
|
||
|
|
*
|
||
|
|
* Resets all registers in the MODULE to their initial state,
|
||
|
|
* and then enable the module.
|
||
|
|
*/
|
||
|
|
void opamp_module_init(void);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Resets OPAMP module.
|
||
|
|
*
|
||
|
|
* Resets all registers in the MODULE to their initial state,
|
||
|
|
* and the OPAMP will be disabled.
|
||
|
|
*/
|
||
|
|
static inline void opamp_module_reset(void)
|
||
|
|
{
|
||
|
|
/* Reset OPAMP. */
|
||
|
|
OPAMP->CTRLA.reg |= OPAMP_CTRLA_SWRST;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Enables OPAMP module.
|
||
|
|
*
|
||
|
|
* Enable the peripheral. Each OPAMP must also be enabled individually
|
||
|
|
* by the Enable bit in the corresponding OPAMP Control register.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
static inline void opamp_module_enable(void)
|
||
|
|
{
|
||
|
|
/* Enable OPAMP. */
|
||
|
|
OPAMP->CTRLA.reg |= OPAMP_CTRLA_ENABLE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Disables OPAMP module.
|
||
|
|
*
|
||
|
|
* Disables the peripheral.
|
||
|
|
*/
|
||
|
|
static inline void opamp_module_disable(void)
|
||
|
|
{
|
||
|
|
/* Disable OPAMP. */
|
||
|
|
OPAMP->CTRLA.reg &= ~OPAMP_CTRLA_ENABLE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Enables OPAMP voltage doubler.
|
||
|
|
*
|
||
|
|
* The analog input MUXes have low resistance, but consume more
|
||
|
|
* power at lower voltages (e.g., driven by the voltage doubler).
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
static inline void opamp_voltage_doubler_enable(void)
|
||
|
|
{
|
||
|
|
struct system_clock_source_osculp32k_config config;
|
||
|
|
|
||
|
|
/* Enable the OSCULP32K clock. */
|
||
|
|
system_clock_source_osculp32k_get_config_defaults(&config);
|
||
|
|
system_clock_source_osculp32k_set_config(&config);
|
||
|
|
|
||
|
|
/* Enable Voltage Doubler. */
|
||
|
|
OPAMP->CTRLA.reg &= ~ OPAMP_CTRLA_LPMUX;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Disables OPAMP voltage doubler.
|
||
|
|
*
|
||
|
|
* The analog input MUXes have high resistance, but consume less power
|
||
|
|
* at lower voltages (e.g., the voltage doubler is disabled).
|
||
|
|
*/
|
||
|
|
static inline void opamp_voltage_doubler_disable(void)
|
||
|
|
{
|
||
|
|
/* Disable Voltage Doubler. */
|
||
|
|
OPAMP->CTRLA.reg |= OPAMP_CTRLA_LPMUX;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Initializes all members of OPAMP0 configuration
|
||
|
|
* structure to safe defaults.
|
||
|
|
*
|
||
|
|
* Initializes all members of OPAMP0 configuration
|
||
|
|
* structure to safe defaults. This function should be called on all new
|
||
|
|
* instances of these configuration structures before being modified by the
|
||
|
|
* user application.
|
||
|
|
*
|
||
|
|
* The default configuration is setting OPAMP0 as "Voltage Follower", refer to
|
||
|
|
* the first mode of "Built-in Modes" in the device datasheet.
|
||
|
|
*
|
||
|
|
* \param[out] config OPAMP0 configuration structure to initialize to
|
||
|
|
* default values
|
||
|
|
*/
|
||
|
|
void opamp0_get_config_defaults(struct opamp0_config *const config);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Initializes all members of OPAMP1 configuration
|
||
|
|
* structure to safe defaults.
|
||
|
|
*
|
||
|
|
* Initializes all members of OPAMP1 configuration
|
||
|
|
* structure to safe defaults. This function should be called on all new
|
||
|
|
* instances of these configuration structures before being modified by the
|
||
|
|
* user application.
|
||
|
|
*
|
||
|
|
* The default configuration is setting OPAMP1 as "Voltage Follower", refer to
|
||
|
|
* the first mode of "Built-in Modes" in the device datasheet.
|
||
|
|
*
|
||
|
|
* \param[out] config OPAMP1 configuration structure to initialize to
|
||
|
|
* default values
|
||
|
|
*/
|
||
|
|
void opamp1_get_config_defaults(struct opamp1_config *const config);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Initializes all members of OPAMP2 configuration
|
||
|
|
* structure to safe defaults.
|
||
|
|
*
|
||
|
|
* Initializes all members of OPAMP2 configuration
|
||
|
|
* structure to safe defaults. This function should be called on all new
|
||
|
|
* instances of these configuration structures before being modified by the
|
||
|
|
* user application.
|
||
|
|
*
|
||
|
|
* The default configuration is setting OPAMP2 as "Voltage Follower", refer to
|
||
|
|
* the first mode of "Built-in Modes" in the device datasheet.
|
||
|
|
*
|
||
|
|
* \param[out] config OPAMP2 configuration structure to initialize to
|
||
|
|
* default values
|
||
|
|
*/
|
||
|
|
void opamp2_get_config_defaults(struct opamp2_config *const config);
|
||
|
|
|
||
|
|
/** \brief Writes OPAMP0 configuration to the hardware module.
|
||
|
|
*
|
||
|
|
* Writes a given OPAMP0 configuration to the hardware module.
|
||
|
|
*
|
||
|
|
* \param[in] config Pointer to the OPAMP0 configuration struct
|
||
|
|
*/
|
||
|
|
void opamp0_set_config(struct opamp0_config *const config);
|
||
|
|
|
||
|
|
/** \brief Writes OPAMP1 configuration to the hardware module.
|
||
|
|
*
|
||
|
|
* Writes a given OPAMP1 configuration to the hardware module.
|
||
|
|
*
|
||
|
|
* \param[in] config Pointer to the OPAMP1 configuration struct
|
||
|
|
*/
|
||
|
|
void opamp1_set_config(struct opamp1_config *const config);
|
||
|
|
|
||
|
|
/** \brief Writes OPAMP2 configuration to the hardware module.
|
||
|
|
*
|
||
|
|
* Writes a given OPAMP2 configuration to the hardware module.
|
||
|
|
*
|
||
|
|
* \param[in] config Pointer to the OPAMP2 configuration struct
|
||
|
|
*/
|
||
|
|
void opamp2_set_config(struct opamp2_config *const config);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Enables an OPAMP that was previously configured.
|
||
|
|
*
|
||
|
|
* Enables an OPAMP that was previously configured via a call to
|
||
|
|
* the set configuration function.
|
||
|
|
*
|
||
|
|
* \param[in] number OPAMP number to enable
|
||
|
|
*/
|
||
|
|
void opamp_enable(const enum opamp_id number);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Disables an OPAMP that was previously enabled.
|
||
|
|
*
|
||
|
|
* Disables an OPAMP that was previously enabled via a call to
|
||
|
|
* \ref opamp_enable().
|
||
|
|
*
|
||
|
|
* \param[in] number OPAMP number to disable
|
||
|
|
*/
|
||
|
|
void opamp_disable(const enum opamp_id number);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Checks an OPAMP output ready status.
|
||
|
|
*
|
||
|
|
* Checks if an OPAMP output is ready.
|
||
|
|
*
|
||
|
|
* \param[in] number OPAMP number to check
|
||
|
|
*
|
||
|
|
* \return Ready status of the select OPAMP.
|
||
|
|
*
|
||
|
|
* \retval false If the select OPAMP output is not ready
|
||
|
|
* \retval ture If the select OPAMP output is ready
|
||
|
|
|
||
|
|
*/
|
||
|
|
bool opamp_is_ready(const enum opamp_id number);
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/** @} */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \page asfdoc_sam0_opamp_extra Extra Information for OPAMP Driver
|
||
|
|
*
|
||
|
|
* \section asfdoc_sam0_opamp_extra_acronyms Acronyms
|
||
|
|
* Below is a table listing the acronyms used in this module, along with their
|
||
|
|
* intended meanings.
|
||
|
|
*
|
||
|
|
* <table>
|
||
|
|
* <tr>
|
||
|
|
* <th>Acronym</th>
|
||
|
|
* <th>Description</th>
|
||
|
|
* </tr>
|
||
|
|
* <tr>
|
||
|
|
* <td>OPAMP</td>
|
||
|
|
* <td>Operational Amplifier Controller</td>
|
||
|
|
* </tr>
|
||
|
|
* </table>
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* \section asfdoc_sam0_opamp_extra_dependencies Dependencies
|
||
|
|
* This driver has no dependencies.
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* \section asfdoc_sam0_opamp_extra_errata Errata
|
||
|
|
* There are no errata related to this driver.
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* \section asfdoc_sam0_opamp_extra_history Module History
|
||
|
|
* An overview of the module history is presented in the table below, with
|
||
|
|
* details on the enhancements and fixes made to the module since its first
|
||
|
|
* release. The current version of this corresponds to the newest version in
|
||
|
|
* the table.
|
||
|
|
*
|
||
|
|
* <table>
|
||
|
|
* <tr>
|
||
|
|
* <th>Changelog</th>
|
||
|
|
* </tr>
|
||
|
|
* <tr>
|
||
|
|
* <td>Initial Release</td>
|
||
|
|
* </tr>
|
||
|
|
* </table>
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \page asfdoc_sam0_opamp_exqsg Examples for OPAMP Driver
|
||
|
|
*
|
||
|
|
* This is a list of the available Quick Start guides (QSGs) and example
|
||
|
|
* applications for \ref asfdoc_sam0_opamp_group. QSGs are simple examples with
|
||
|
|
* step-by-step instructions to configure and use this driver in a selection of
|
||
|
|
* use cases. Note that a QSG can be compiled as a standalone application or be
|
||
|
|
* added to the user application.
|
||
|
|
*
|
||
|
|
* - \subpage asfdoc_sam0_opamp_basic_use_case
|
||
|
|
*
|
||
|
|
* \page asfdoc_sam0_opamp_document_revision_history Document Revision History
|
||
|
|
*
|
||
|
|
* <table>
|
||
|
|
* <tr>
|
||
|
|
* <th>Doc. Rev.</td>
|
||
|
|
* <th>Date</td>
|
||
|
|
* <th>Comments</td>
|
||
|
|
* </tr>
|
||
|
|
* <tr>
|
||
|
|
* <td>42446A</td>
|
||
|
|
* <td>07/2015</td>
|
||
|
|
* <td>Initial document release</td>
|
||
|
|
* </tr>
|
||
|
|
* </table>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#endif /* OPAMP_H_INCLUDED */
|
||
|
|
|