ea6d73f140
1. Upgrade Cortex driver library (CMSIS -> CMSIS & Device): version 2.3.2 -> 3.0.1 & 3.0.0 - Remove "bsp/efm32/Libraries/CMSIS/Lib/ARM", "bsp/efm32/Libraries/CMSIS/Lib/G++" and "bsp/efm32/Libraries/CMSIS/SVD" to save space 2. Upgrade EFM32 driver libraries (efm32lib -> emlib): version 2.3.2 -> 3.0.0 - Remove "bsp/efm32/Libraries/Device/EnergyMicro/EFM32LG" and "bsp/efm32/Libraries/Device/EnergyMicro/EFM32TG" to save space 3. Upgrade EFM32GG_DK3750 development kit driver library: version 1.2.2 -> 2.0.1 4. Upgrade EFM32_Gxxx_DK development kit driver library: version 1.7.3 -> 2.0.1 5. Add energy management unit driver and test code 6. Modify linker script and related code to compatible with new version of libraries 7. Change EFM32 branch version number to 1.0 8. Add photo frame demo application git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2122 bbd45198-f89e-11dd-88c7-29a3b14d5316
544 lines
36 KiB
C
544 lines
36 KiB
C
/**************************************************************************//**
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* @file
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* @brief Operational Amplifier (OPAMP) peripheral API
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* @author Energy Micro AS
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* @version 3.0.0
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******************************************************************************
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* @section License
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* <b>(C) Copyright 2012 Energy Micro AS, http://www.energymicro.com</b>
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*******************************************************************************
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*
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* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
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* obligation to support this Software. Energy Micro AS is providing the
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* Software "AS IS", with no express or implied warranties of any kind,
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* including, but not limited to, any implied warranties of merchantability
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* or fitness for any particular purpose or warranties against infringement
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* of any proprietary rights of a third party.
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*
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* Energy Micro AS will not be liable for any consequential, incidental, or
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* special damages, or any other relief, or for any claim by any third party,
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* arising from your use of this Software.
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*
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*****************************************************************************/
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#ifndef __EM_OPAMP_H
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#define __EM_OPAMP_H
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#include "em_part.h"
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#if defined(OPAMP_PRESENT) && (OPAMP_COUNT == 1)
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stdbool.h>
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#include "em_dac.h"
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/***************************************************************************//**
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* @addtogroup EM_Library
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* @{
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******************************************************************************/
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/***************************************************************************//**
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* @addtogroup OPAMP
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* @{
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******************************************************************************/
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/** @cond DO_NOT_INCLUDE_WITH_DOXYGEN */
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/** Validation of DAC OPA number for assert statements. */
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#define DAC_OPA_VALID(opa) ((opa) <= OPA2)
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/** @endcond */
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/*******************************************************************************
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******************************** ENUMS ************************************
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******************************************************************************/
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/** OPAMP selector values. */
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typedef enum
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{
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OPA0 = 0, /**< Select OPA0. */
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OPA1 = 1, /**< Select OPA1. */
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OPA2 = 2 /**< Select OPA2. */
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} OPAMP_TypeDef;
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/** OPAMP negative terminal input selection values. */
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typedef enum
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{
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opaNegSelDisable = DAC_OPA0MUX_NEGSEL_DISABLE, /**< Input disabled. */
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opaNegSelUnityGain = DAC_OPA0MUX_NEGSEL_UG, /**< Unity gain feedback path. */
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opaNegSelResTap = DAC_OPA0MUX_NEGSEL_OPATAP, /**< Feedback resistor ladder tap. */
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opaNegSelNegPad = DAC_OPA0MUX_NEGSEL_NEGPAD /**< Negative pad as input. */
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} OPAMP_NegSel_TypeDef;
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/** OPAMP positive terminal input selection values. */
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typedef enum
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{
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opaPosSelDisable = DAC_OPA0MUX_POSSEL_DISABLE, /**< Input disabled. */
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opaPosSelDac = DAC_OPA0MUX_POSSEL_DAC, /**< DAC as input (not OPA2). */
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opaPosSelPosPad = DAC_OPA0MUX_POSSEL_POSPAD, /**< Positive pad as input. */
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opaPosSelOpaIn = DAC_OPA0MUX_POSSEL_OPA0INP, /**< Input from OPAx. */
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opaPosSelResTapOpa0 = DAC_OPA0MUX_POSSEL_OPATAP /**< Feedback resistor ladder tap from OPA0. */
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} OPAMP_PosSel_TypeDef;
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/** OPAMP output terminal selection values. */
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typedef enum
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{
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opaOutModeDisable = DAC_OPA0MUX_OUTMODE_DISABLE, /**< OPA output disabled. */
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opaOutModeMain = DAC_OPA0MUX_OUTMODE_MAIN, /**< Main output to pin enabled. */
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opaOutModeAlt = DAC_OPA0MUX_OUTMODE_ALT, /**< Alternate output(s) enabled (not OPA2). */
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opaOutModeAll = DAC_OPA0MUX_OUTMODE_ALL /**< Both main and alternate enabled (not OPA2). */
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} OPAMP_OutMode_TypeDef;
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/** OPAMP gain values. */
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typedef enum
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{
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opaResSelDefault = DAC_OPA0MUX_RESSEL_DEFAULT, /**< Default value when resistor ladder is unused. */
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opaResSelR2eq0_33R1 = DAC_OPA0MUX_RESSEL_RES0, /**< R2 = 0.33 * R1 */
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opaResSelR2eqR1 = DAC_OPA0MUX_RESSEL_RES1, /**< R2 = R1 */
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opaResSelR1eq1_67R1 = DAC_OPA0MUX_RESSEL_RES2, /**< R2 = 1.67 R1 */
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opaResSelR2eq2R1 = DAC_OPA0MUX_RESSEL_RES3, /**< R2 = 2 * R1 */
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opaResSelR2eq3R1 = DAC_OPA0MUX_RESSEL_RES4, /**< R2 = 3 * R1 */
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opaResSelR2eq4_33R1 = DAC_OPA0MUX_RESSEL_RES5, /**< R2 = 4.33 * R1 */
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opaResSelR2eq7R1 = DAC_OPA0MUX_RESSEL_RES6, /**< R2 = 7 * R1 */
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opaResSelR2eq15R1 = DAC_OPA0MUX_RESSEL_RES7 /**< R2 = 15 * R1 */
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} OPAMP_ResSel_TypeDef;
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/** OPAMP resistor ladder input selector values. */
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typedef enum
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{
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opaResInMuxDisable = DAC_OPA0MUX_RESINMUX_DISABLE, /**< Resistor ladder disabled. */
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opaResInMuxOpaIn = DAC_OPA0MUX_RESINMUX_OPA0INP, /**< Input from OPAx. */
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opaResInMuxNegPad = DAC_OPA0MUX_RESINMUX_NEGPAD, /**< Input from negative pad. */
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opaResInMuxPosPad = DAC_OPA0MUX_RESINMUX_POSPAD, /**< Input from positive pad. */
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opaResInMuxVss = DAC_OPA0MUX_RESINMUX_VSS /**< Input connected to Vss. */
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} OPAMP_ResInMux_TypeDef;
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/*******************************************************************************
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******************************* STRUCTS ***********************************
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******************************************************************************/
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/** OPAMP init structure. */
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typedef struct
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{
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OPAMP_NegSel_TypeDef negSel; /**< Select input source for negative terminal. */
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OPAMP_PosSel_TypeDef posSel; /**< Select input source for positive terminal. */
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OPAMP_OutMode_TypeDef outMode; /**< Output terminal connection. */
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OPAMP_ResSel_TypeDef resSel; /**< Select R2/R1 resistor ratio. */
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OPAMP_ResInMux_TypeDef resInMux; /**< Select input source for resistor ladder. */
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uint32_t outPen; /**< Select alternate output terminal connections. */
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uint32_t bias; /**< Set OPAMP bias current. */
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bool halfBias; /**< Divide OPAMP bias current by 2. */
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bool lpfPosPadDisable; /**< Disable low pass filter on positive pad. */
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bool lpfNegPadDisable; /**< Disable low pass filter on negative pad. */
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bool nextOut; /**< Enable NEXTOUT signal source. */
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bool npEn; /**< Enable positive pad. */
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bool ppEn; /**< Enable negative pad. */
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bool shortInputs; /**< Short OPAMP input terminals. */
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bool hcmDisable; /**< Disable input rail-to-rail capability. */
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bool defaultOffset; /**< Use factory calibrated opamp offset value. */
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uint32_t offset; /**< Opamp offset value when @ref defaultOffset is false.*/
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} OPAMP_Init_TypeDef;
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/** Configuration of OPA0/1 in unity gain voltage follower mode. */
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#define OPA_INIT_UNITY_GAIN \
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{ \
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opaNegSelUnityGain, /* Unity gain. */ \
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opaPosSelPosPad, /* Pos input from pad. */ \
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opaOutModeMain, /* Main output enabled. */ \
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opaResSelDefault, /* Resistor ladder is not used. */ \
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opaResInMuxDisable, /* Resistor ladder disabled. */ \
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0, /* No alternate outputs enabled. */ \
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_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
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_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
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false, /* No low pass filter on pos pad. */ \
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false, /* No low pass filter on neg pad. */ \
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false, /* No nextout output enabled. */ \
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false, /* Neg pad disabled. */ \
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true, /* Pos pad enabled, used as signal input. */ \
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false, /* No shorting of inputs. */ \
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false, /* Rail-to-rail input enabled. */ \
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true, /* Use factory calibrated opamp offset. */ \
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0 /* Opamp offset value (not used). */ \
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}
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/** Configuration of OPA2 in unity gain voltage follower mode. */
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#define OPA_INIT_UNITY_GAIN_OPA2 \
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{ \
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opaNegSelUnityGain, /* Unity gain. */ \
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opaPosSelPosPad, /* Pos input from pad. */ \
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opaOutModeMain, /* Main output enabled. */ \
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opaResSelDefault, /* Resistor ladder is not used. */ \
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opaResInMuxDisable, /* Resistor ladder disabled. */ \
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DAC_OPA0MUX_OUTPEN_OUT0, /* Alternate output 0 enabled. */ \
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_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
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_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
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false, /* No low pass filter on pos pad. */ \
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false, /* No low pass filter on neg pad. */ \
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false, /* No nextout output enabled. */ \
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false, /* Neg pad disabled. */ \
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true, /* Pos pad enabled, used as signal input. */ \
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false, /* No shorting of inputs. */ \
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false, /* Rail-to-rail input enabled. */ \
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true, /* Use factory calibrated opamp offset. */ \
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0 /* Opamp offset value (not used). */ \
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}
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/** Configuration of OPA0/1 in non-inverting amplifier mode. */
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#define OPA_INIT_NON_INVERTING \
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{ \
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opaNegSelResTap, /* Neg input from resistor ladder tap. */ \
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opaPosSelPosPad, /* Pos input from pad. */ \
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opaOutModeMain, /* Main output enabled. */ \
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opaResSelR2eq0_33R1, /* R2 = 1/3 R1 */ \
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opaResInMuxNegPad, /* Resistor ladder input from neg pad. */ \
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0, /* No alternate outputs enabled. */ \
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_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
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_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
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false, /* No low pass filter on pos pad. */ \
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false, /* No low pass filter on neg pad. */ \
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false, /* No nextout output enabled. */ \
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true, /* Neg pad enabled, used as signal ground. */ \
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true, /* Pos pad enabled, used as signal input. */ \
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false, /* No shorting of inputs. */ \
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false, /* Rail-to-rail input enabled. */ \
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true, /* Use factory calibrated opamp offset. */ \
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0 /* Opamp offset value (not used). */ \
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}
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/** Configuration of OPA2 in non-inverting amplifier mode. */
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#define OPA_INIT_NON_INVERTING_OPA2 \
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{ \
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opaNegSelResTap, /* Neg input from resistor ladder tap. */ \
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opaPosSelPosPad, /* Pos input from pad. */ \
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opaOutModeMain, /* Main output enabled. */ \
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opaResSelR2eq0_33R1, /* R2 = 1/3 R1 */ \
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opaResInMuxNegPad, /* Resistor ladder input from neg pad. */ \
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DAC_OPA0MUX_OUTPEN_OUT0, /* Alternate output 0 enabled. */ \
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_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
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_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
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false, /* No low pass filter on pos pad. */ \
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false, /* No low pass filter on neg pad. */ \
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false, /* No nextout output enabled. */ \
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true, /* Neg pad enabled, used as signal ground. */ \
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true, /* Pos pad enabled, used as signal input. */ \
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false, /* No shorting of inputs. */ \
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false, /* Rail-to-rail input enabled. */ \
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true, /* Use factory calibrated opamp offset. */ \
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0 /* Opamp offset value (not used). */ \
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}
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/** Configuration of OPA0/1 in inverting amplifier mode. */
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#define OPA_INIT_INVERTING \
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{ \
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opaNegSelResTap, /* Neg input from resistor ladder tap. */ \
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opaPosSelPosPad, /* Pos input from pad. */ \
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opaOutModeMain, /* Main output enabled. */ \
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opaResSelR2eqR1, /* R2 = R1 */ \
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opaResInMuxNegPad, /* Resistor ladder input from neg pad. */ \
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0, /* No alternate outputs enabled. */ \
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_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
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_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
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false, /* No low pass filter on pos pad. */ \
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false, /* No low pass filter on neg pad. */ \
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false, /* No nextout output enabled. */ \
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true, /* Neg pad enabled, used as signal input. */ \
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true, /* Pos pad enabled, used as signal ground. */ \
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false, /* No shorting of inputs. */ \
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false, /* Rail-to-rail input enabled. */ \
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true, /* Use factory calibrated opamp offset. */ \
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0 /* Opamp offset value (not used). */ \
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}
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/** Configuration of OPA2 in inverting amplifier mode. */
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#define OPA_INIT_INVERTING_OPA2 \
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{ \
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opaNegSelResTap, /* Neg input from resistor ladder tap. */ \
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opaPosSelPosPad, /* Pos input from pad. */ \
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opaOutModeMain, /* Main output enabled. */ \
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opaResSelR2eqR1, /* R2 = R1 */ \
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opaResInMuxNegPad, /* Resistor ladder input from neg pad. */ \
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DAC_OPA0MUX_OUTPEN_OUT0, /* Alternate output 0 enabled. */ \
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_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
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_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
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false, /* No low pass filter on pos pad. */ \
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false, /* No low pass filter on neg pad. */ \
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false, /* No nextout output enabled. */ \
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true, /* Neg pad enabled, used as signal input. */ \
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true, /* Pos pad enabled, used as signal ground. */ \
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false, /* No shorting of inputs. */ \
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false, /* Rail-to-rail input enabled. */ \
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true, /* Use factory calibrated opamp offset. */ \
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0 /* Opamp offset value (not used). */ \
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}
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/** Configuration of OPA0 in cascaded non-inverting amplifier mode. */
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#define OPA_INIT_CASCADED_NON_INVERTING_OPA0 \
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{ \
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opaNegSelResTap, /* Neg input from resistor ladder tap. */ \
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opaPosSelPosPad, /* Pos input from pad. */ \
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opaOutModeAll, /* Both main and alternate outputs. */ \
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opaResSelR2eq0_33R1, /* R2 = 1/3 R1 */ \
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opaResInMuxNegPad, /* Resistor ladder input from neg pad. */ \
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0, /* No alternate outputs enabled. */ \
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_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
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_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
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false, /* No low pass filter on pos pad. */ \
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false, /* No low pass filter on neg pad. */ \
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true, /* Pass output to next stage (OPA1). */ \
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true, /* Neg pad enabled, used as signal ground. */ \
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true, /* Pos pad enabled, used as signal input. */ \
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false, /* No shorting of inputs. */ \
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false, /* Rail-to-rail input enabled. */ \
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true, /* Use factory calibrated opamp offset. */ \
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0 /* Opamp offset value (not used). */ \
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}
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/** Configuration of OPA1 in cascaded non-inverting amplifier mode. */
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#define OPA_INIT_CASCADED_NON_INVERTING_OPA1 \
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{ \
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opaNegSelResTap, /* Neg input from resistor ladder tap. */ \
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opaPosSelOpaIn, /* Pos input from OPA0 output. */ \
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opaOutModeAll, /* Both main and alternate outputs. */ \
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opaResSelR2eq0_33R1, /* R2 = 1/3 R1 */ \
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opaResInMuxNegPad, /* Resistor ladder input from neg pad. */ \
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0, /* No alternate outputs enabled. */ \
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_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
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_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
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false, /* No low pass filter on pos pad. */ \
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false, /* No low pass filter on neg pad. */ \
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true, /* Pass output to next stage (OPA2). */ \
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true, /* Neg pad enabled, used as signal ground. */ \
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false, /* Pos pad disabled. */ \
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false, /* No shorting of inputs. */ \
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false, /* Rail-to-rail input enabled. */ \
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true, /* Use factory calibrated opamp offset. */ \
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0 /* Opamp offset value (not used). */ \
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}
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/** Configuration of OPA2 in cascaded non-inverting amplifier mode. */
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#define OPA_INIT_CASCADED_NON_INVERTING_OPA2 \
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{ \
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opaNegSelResTap, /* Neg input from resistor ladder tap. */ \
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opaPosSelOpaIn, /* Pos input from OPA1 output. */ \
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opaOutModeMain, /* Main output enabled. */ \
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opaResSelR2eq0_33R1, /* R2 = 1/3 R1 */ \
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opaResInMuxNegPad, /* Resistor ladder input from neg pad. */ \
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DAC_OPA0MUX_OUTPEN_OUT0, /* Alternate output 0 enabled. */ \
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_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
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_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
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false, /* No low pass filter on pos pad. */ \
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false, /* No low pass filter on neg pad. */ \
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false, /* No nextout output enabled. */ \
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true, /* Neg pad enabled, used as signal ground. */ \
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false, /* Pos pad disabled. */ \
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false, /* No shorting of inputs. */ \
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false, /* Rail-to-rail input enabled. */ \
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true, /* Use factory calibrated opamp offset. */ \
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0 /* Opamp offset value (not used). */ \
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}
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/** Configuration of OPA0 in cascaded inverting amplifier mode. */
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#define OPA_INIT_CASCADED_INVERTING_OPA0 \
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{ \
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opaNegSelResTap, /* Neg input from resistor ladder tap. */ \
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opaPosSelPosPad, /* Pos input from pad. */ \
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opaOutModeAll, /* Both main and alternate outputs. */ \
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opaResSelR2eqR1, /* R2 = R1 */ \
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opaResInMuxNegPad, /* Resistor ladder input from neg pad. */ \
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0, /* No alternate outputs enabled. */ \
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_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
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_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
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false, /* No low pass filter on pos pad. */ \
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false, /* No low pass filter on neg pad. */ \
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true, /* Pass output to next stage (OPA1). */ \
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true, /* Neg pad enabled, used as signal input. */ \
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true, /* Pos pad enabled, used as signal ground. */ \
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false, /* No shorting of inputs. */ \
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false, /* Rail-to-rail input enabled. */ \
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true, /* Use factory calibrated opamp offset. */ \
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0 /* Opamp offset value (not used). */ \
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}
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/** Configuration of OPA1 in cascaded inverting amplifier mode. */
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#define OPA_INIT_CASCADED_INVERTING_OPA1 \
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{ \
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opaNegSelResTap, /* Neg input from resistor ladder tap. */ \
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opaPosSelPosPad, /* Pos input from pad. */ \
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opaOutModeAll, /* Both main and alternate outputs. */ \
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opaResSelR2eqR1, /* R2 = R1 */ \
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opaResInMuxOpaIn, /* Resistor ladder input from OPA0. */ \
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0, /* No alternate outputs enabled. */ \
|
|
_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
|
|
_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
|
|
false, /* No low pass filter on pos pad. */ \
|
|
false, /* No low pass filter on neg pad. */ \
|
|
true, /* Pass output to next stage (OPA2). */ \
|
|
false, /* Neg pad disabled. */ \
|
|
true, /* Pos pad enabled, used as signal ground. */ \
|
|
false, /* No shorting of inputs. */ \
|
|
false, /* Rail-to-rail input enabled. */ \
|
|
true, /* Use factory calibrated opamp offset. */ \
|
|
0 /* Opamp offset value (not used). */ \
|
|
}
|
|
|
|
/** Configuration of OPA2 in cascaded inverting amplifier mode. */
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|
#define OPA_INIT_CASCADED_INVERTING_OPA2 \
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|
{ \
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|
opaNegSelResTap, /* Neg input from resistor ladder tap. */ \
|
|
opaPosSelPosPad, /* Pos input from pad. */ \
|
|
opaOutModeMain, /* Main output enabled. */ \
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|
opaResSelR2eqR1, /* R2 = R1 */ \
|
|
opaResInMuxOpaIn, /* Resistor ladder input from OPA1. */ \
|
|
DAC_OPA0MUX_OUTPEN_OUT0, /* Alternate output 0 enabled. */ \
|
|
_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
|
|
_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
|
|
false, /* No low pass filter on pos pad. */ \
|
|
false, /* No low pass filter on neg pad. */ \
|
|
false, /* No nextout output enabled. */ \
|
|
false, /* Neg pad disabled. */ \
|
|
true, /* Pos pad enabled, used as signal ground. */ \
|
|
false, /* No shorting of inputs. */ \
|
|
false, /* Rail-to-rail input enabled. */ \
|
|
true, /* Use factory calibrated opamp offset. */ \
|
|
0 /* Opamp offset value (not used). */ \
|
|
}
|
|
|
|
/** Configuration of OPA0 in two-opamp differential driver mode. */
|
|
#define OPA_INIT_DIFF_DRIVER_OPA0 \
|
|
{ \
|
|
opaNegSelUnityGain, /* Unity gain. */ \
|
|
opaPosSelPosPad, /* Pos input from pad. */ \
|
|
opaOutModeAll, /* Both main and alternate outputs. */ \
|
|
opaResSelDefault, /* Resistor ladder is not used. */ \
|
|
opaResInMuxDisable, /* Resistor ladder disabled. */ \
|
|
0, /* No alternate outputs enabled. */ \
|
|
_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
|
|
_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
|
|
false, /* No low pass filter on pos pad. */ \
|
|
false, /* No low pass filter on neg pad. */ \
|
|
true, /* Pass output to next stage (OPA1). */ \
|
|
false, /* Neg pad disabled. */ \
|
|
true, /* Pos pad enabled, used as signal input. */ \
|
|
false, /* No shorting of inputs. */ \
|
|
false, /* Rail-to-rail input enabled. */ \
|
|
true, /* Use factory calibrated opamp offset. */ \
|
|
0 /* Opamp offset value (not used). */ \
|
|
}
|
|
|
|
/** Configuration of OPA1 in two-opamp differential driver mode. */
|
|
#define OPA_INIT_DIFF_DRIVER_OPA1 \
|
|
{ \
|
|
opaNegSelResTap, /* Neg input from resistor ladder tap. */ \
|
|
opaPosSelPosPad, /* Pos input from pad. */ \
|
|
opaOutModeMain, /* Main output enabled. */ \
|
|
opaResSelR2eqR1, /* R2 = R1 */ \
|
|
opaResInMuxOpaIn, /* Resistor ladder input from OPA0. */ \
|
|
0, /* No alternate outputs enabled. */ \
|
|
_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
|
|
_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
|
|
false, /* No low pass filter on pos pad. */ \
|
|
false, /* No low pass filter on neg pad. */ \
|
|
false, /* No nextout output enabled. */ \
|
|
false, /* Neg pad disabled. */ \
|
|
true, /* Pos pad enabled, used as signal ground. */ \
|
|
false, /* No shorting of inputs. */ \
|
|
false, /* Rail-to-rail input enabled. */ \
|
|
true, /* Use factory calibrated opamp offset. */ \
|
|
0 /* Opamp offset value (not used). */ \
|
|
}
|
|
|
|
/** Configuration of OPA0 in three-opamp differential receiver mode. */
|
|
#define OPA_INIT_DIFF_RECEIVER_OPA0 \
|
|
{ \
|
|
opaNegSelUnityGain, /* Unity gain. */ \
|
|
opaPosSelPosPad, /* Pos input from pad. */ \
|
|
opaOutModeAll, /* Both main and alternate outputs. */ \
|
|
opaResSelR2eqR1, /* R2 = R1 */ \
|
|
opaResInMuxNegPad, /* Resistor ladder input from neg pad. */ \
|
|
0, /* No alternate outputs enabled. */ \
|
|
_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
|
|
_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
|
|
false, /* No low pass filter on pos pad. */ \
|
|
false, /* No low pass filter on neg pad. */ \
|
|
true, /* Pass output to next stage (OPA2). */ \
|
|
true, /* Neg pad enabled, used as signal ground. */ \
|
|
true, /* Pos pad enabled, used as signal input. */ \
|
|
false, /* No shorting of inputs. */ \
|
|
false, /* Rail-to-rail input enabled. */ \
|
|
true, /* Use factory calibrated opamp offset. */ \
|
|
0 /* Opamp offset value (not used). */ \
|
|
}
|
|
|
|
/** Configuration of OPA1 in three-opamp differential receiver mode. */
|
|
#define OPA_INIT_DIFF_RECEIVER_OPA1 \
|
|
{ \
|
|
opaNegSelUnityGain, /* Unity gain. */ \
|
|
opaPosSelPosPad, /* Pos input from pad. */ \
|
|
opaOutModeAll, /* Both main and alternate outputs. */ \
|
|
opaResSelDefault, /* Resistor ladder is not used. */ \
|
|
opaResInMuxDisable, /* Disable resistor ladder. */ \
|
|
0, /* No alternate outputs enabled. */ \
|
|
_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
|
|
_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
|
|
false, /* No low pass filter on pos pad. */ \
|
|
false, /* No low pass filter on neg pad. */ \
|
|
true, /* Pass output to next stage (OPA2). */ \
|
|
false, /* Neg pad disabled. */ \
|
|
true, /* Pos pad enabled, used as signal input. */ \
|
|
false, /* No shorting of inputs. */ \
|
|
false, /* Rail-to-rail input enabled. */ \
|
|
true, /* Use factory calibrated opamp offset. */ \
|
|
0 /* Opamp offset value (not used). */ \
|
|
}
|
|
|
|
/** Configuration of OPA2 in three-opamp differential receiver mode. */
|
|
#define OPA_INIT_DIFF_RECEIVER_OPA2 \
|
|
{ \
|
|
opaNegSelResTap, /* Input from resistor ladder tap. */ \
|
|
opaPosSelResTapOpa0, /* Input from OPA0 resistor ladder tap. */ \
|
|
opaOutModeMain, /* Main output enabled. */ \
|
|
opaResSelR2eqR1, /* R2 = R1 */ \
|
|
opaResInMuxOpaIn, /* Resistor ladder input from OPA1. */ \
|
|
DAC_OPA0MUX_OUTPEN_OUT0, /* Enable alternate output 0. */ \
|
|
_DAC_BIASPROG_BIASPROG_DEFAULT, /* Default bias setting. */ \
|
|
_DAC_BIASPROG_HALFBIAS_DEFAULT, /* Default half-bias setting. */ \
|
|
false, /* No low pass filter on pos pad. */ \
|
|
false, /* No low pass filter on neg pad. */ \
|
|
false, /* No nextout output enabled. */ \
|
|
false, /* Neg pad disabled. */ \
|
|
false, /* Pos pad disabled. */ \
|
|
false, /* No shorting of inputs. */ \
|
|
false, /* Rail-to-rail input enabled. */ \
|
|
true, /* Use factory calibrated opamp offset. */ \
|
|
0 /* Opamp offset value (not used). */ \
|
|
}
|
|
|
|
/*******************************************************************************
|
|
***************************** PROTOTYPES **********************************
|
|
******************************************************************************/
|
|
|
|
void OPAMP_Disable(DAC_TypeDef *dac, OPAMP_TypeDef opa);
|
|
void OPAMP_Enable(DAC_TypeDef *dac, OPAMP_TypeDef opa, const OPAMP_Init_TypeDef *init);
|
|
|
|
/** @} (end addtogroup OPAMP) */
|
|
/** @} (end addtogroup EM_Library) */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* defined( OPAMP_PRESENT ) && ( OPAMP_COUNT == 1 ) */
|
|
#endif /* __EM_DAC_H */
|