65 lines
3.1 KiB
C
65 lines
3.1 KiB
C
/*!
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*****************************************************************************
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@file: Electrocardiograph.h
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@author: Neo Xu
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@brief: ECG measurement.
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-----------------------------------------------------------------------------
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Copyright (c) 2017-2019 Analog Devices, Inc. All Rights Reserved.
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This software is proprietary to Analog Devices, Inc. and its licensors.
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By using this software you agree to the terms of the associated
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Analog Devices Software License Agreement.
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*****************************************************************************/
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#ifndef _ELETROCARDIOAGRAPH_H_
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#define _ELETROCARDIOAGRAPH_H_
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#include "ad5940.h"
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#include <stdio.h>
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#include "string.h"
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#include "math.h"
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typedef struct
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{
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/* Common configurations for all kinds of Application. */
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BoolFlag bParaChanged; /* Indicate to generate sequence again. It's auto cleared by AppBIAInit */
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BoolFlag bBioElecBoard; /* Indicate if the board is Bioelec board. 0: AD5941Sens1 board, 1: AD5940-BioElec */
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uint32_t SeqStartAddr; /* Initialaztion sequence start address in SRAM of AD5940 */
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uint32_t MaxSeqLen; /* Limit the maximum sequence. */
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uint32_t SeqStartAddrCal; /* Calibration sequence start address in SRAM of AD5940 */
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uint32_t MaxSeqLenCal;
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/* Application related parameters */
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float ECGODR; /* Must be less than 1500Hz. Sample frequency in Hz, this value is used to set Sleep Wakeup Timer period */
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int32_t NumOfData; /* By default it's '-1'. If you want the engine stops after get NumofData, then set the value here. Otherwise, set it to '-1' which means never stop. */
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uint32_t FifoThresh; /* FIFO threshold. Should be N*4 */
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float LfoscClkFreq; /* The clock frequency of internal LFOSC in Hz. Typically it's 32kHz. Leave it here in case we calibrate clock in software method */
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float SysClkFreq; /* The real frequency of system clock */
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float AdcClkFreq; /* The real frequency of ADC clock */
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uint32_t PwrMod; /* Control Chip power mode(LP/HP) */
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uint32_t AdcPgaGain; /* PGA Gain select from GNPGA_1, GNPGA_1_5, GNPGA_2, GNPGA_4, GNPGA_9 !!! We must ensure signal is in range of +-1.5V which is limited by ADC input stage */
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uint32_t ADCSinc3Osr;
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uint32_t ADCSinc2Osr;
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/* Private variables for internal usage */
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BoolFlag ECGInited; /* If the program run firstly, generated sequence commands */
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BoolFlag StopRequired; /* After FIFO is ready, stop the measurement sequence */
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uint32_t FifoDataCount; /* How many data we have got from start. */
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SEQInfo_Type InitSeqInfo;
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SEQInfo_Type MeasureSeqInfo;
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}AppECGCfg_Type;
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#define APPCTRL_START 0
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#define APPCTRL_STOPNOW 1
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#define APPCTRL_STOPSYNC 2
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//#define APPCTRL_GETFREQ 3
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#define APPCTRL_SHUTDOWN 4 /* Note: shutdown here means turn off everything and put AFE to hibernate mode. The word 'SHUT DOWN' is only used here. */
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AD5940Err AppECGGetCfg(void *pCfg);
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AD5940Err AppECGInit(uint32_t *pBuffer, uint32_t BufferSize);
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AD5940Err AppECGISR(void *pBuff, uint32_t *pCount);
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AD5940Err AppECGCtrl(int32_t Command, void *pPara);
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#endif
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