149 lines
4.6 KiB
C
149 lines
4.6 KiB
C
/*!
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*****************************************************************************
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@file: AD5940Main.c
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@author: Neo Xu
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@brief: Used to control specific application and process data.
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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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/**
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* @addtogroup AD5940_System_Examples
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* @{
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* @defgroup BioElec_Example
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* @{
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*/
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#include "ad5940.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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#include "Electrocardiograph.h"
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#define APPBUFF_SIZE 1024
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uint32_t AppBuff[APPBUFF_SIZE];
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float LFOSCFreq; /* Measured LFOSC frequency */
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/* print ECG result to uart */
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AD5940Err ECGShowResult(void *pData, uint32_t DataCount)
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{
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/*Process data*/
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for(int i=0;i<DataCount;i++)
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{
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printf("%d \n", ((uint32_t *)pData)[i]);
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}
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return 0;
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}
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/* Initialize AD5940 basic blocks like clock */
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static int32_t AD5940PlatformCfg(void)
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{
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CLKCfg_Type clk_cfg;
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FIFOCfg_Type fifo_cfg;
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SEQCfg_Type seq_cfg;
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AGPIOCfg_Type gpio_cfg;
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LFOSCMeasure_Type LfoscMeasure;
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/* Use hardware reset */
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AD5940_HWReset();
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/* Platform configuration */
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AD5940_Initialize();
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/* Step1. Configure clock */
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clk_cfg.ADCClkDiv = ADCCLKDIV_1;
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clk_cfg.ADCCLkSrc = ADCCLKSRC_HFOSC;
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clk_cfg.SysClkDiv = SYSCLKDIV_1;
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clk_cfg.SysClkSrc = SYSCLKSRC_HFOSC;
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clk_cfg.HfOSC32MHzMode = bFALSE;
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clk_cfg.HFOSCEn = bTRUE;
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clk_cfg.HFXTALEn = bFALSE;
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clk_cfg.LFOSCEn = bTRUE;
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AD5940_CLKCfg(&clk_cfg);
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/* Step2. Configure FIFO and Sequencer*/
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fifo_cfg.FIFOEn = bFALSE;
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fifo_cfg.FIFOMode = FIFOMODE_FIFO;
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fifo_cfg.FIFOSize = FIFOSIZE_4KB; /* 4kB for FIFO, The reset 2kB for sequencer */
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fifo_cfg.FIFOSrc = FIFOSRC_SINC3;
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fifo_cfg.FIFOThresh = 256;//AppBIACfg.FifoThresh;
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AD5940_FIFOCfg(&fifo_cfg); /* Disable to reset FIFO. */
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fifo_cfg.FIFOEn = bTRUE;
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AD5940_FIFOCfg(&fifo_cfg); /* Enable FIFO here */
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/* Configure sequencer and stop it */
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seq_cfg.SeqMemSize = SEQMEMSIZE_2KB;
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seq_cfg.SeqBreakEn = bFALSE;
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seq_cfg.SeqIgnoreEn = bFALSE;
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seq_cfg.SeqCntCRCClr = bTRUE;
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seq_cfg.SeqEnable = bFALSE;
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seq_cfg.SeqWrTimer = 0;
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AD5940_SEQCfg(&seq_cfg);
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/* Step3. Interrupt controller */
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AD5940_INTCCfg(AFEINTC_1, AFEINTSRC_ALLINT, bTRUE); /* Enable all interrupt in Interrupt Controller 1, so we can check INTC flags */
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AD5940_INTCCfg(AFEINTC_0, AFEINTSRC_DATAFIFOTHRESH, bTRUE); /* Interrupt Controller 0 will control GP0 to generate interrupt to MCU */
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AD5940_INTCClrFlag(AFEINTSRC_ALLINT);
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/* Step4: Reconfigure GPIO */
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gpio_cfg.FuncSet = GP6_SYNC|GP5_SYNC|GP2_TRIG|GP1_SYNC|GP0_INT;
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gpio_cfg.InputEnSet = AGPIO_Pin2;
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gpio_cfg.OutputEnSet = AGPIO_Pin0|AGPIO_Pin1|AGPIO_Pin5|AGPIO_Pin6;
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gpio_cfg.OutVal = 0;
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gpio_cfg.PullEnSet = AGPIO_Pin2;
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AD5940_AGPIOCfg(&gpio_cfg);
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AD5940_SleepKeyCtrlS(SLPKEY_UNLOCK); /* Enable AFE to enter sleep mode. */
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/* Measure LFOSC frequency */
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LfoscMeasure.CalDuration = 1000.0; /* 1000ms used for calibration. */
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LfoscMeasure.CalSeqAddr = 0;
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LfoscMeasure.SystemClkFreq = 16000000.0f; /* 16MHz in this firmware. */
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AD5940_LFOSCMeasure(&LfoscMeasure, &LFOSCFreq);
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printf("Freq:%f\n", LFOSCFreq);
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return 0;
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}
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void AD5940ECGStructInit(void)
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{
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AppECGCfg_Type *pCfg;
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AppECGGetCfg(&pCfg);
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pCfg->MaxSeqLen = 512;
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pCfg->FifoThresh = 250;
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pCfg->ECGODR = 250; /* Note: ADuCM3029 is too slow to print data to UART. Limited to 1000Hz. */
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pCfg->LfoscClkFreq = LFOSCFreq;
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}
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void AD5940_Main(void)
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{
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uint32_t temp;
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AD5940PlatformCfg();
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AD5940ECGStructInit(); /* Configure your parameters in this function */
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AppECGInit(AppBuff, APPBUFF_SIZE); /* Initialize BIA application. Provide a buffer, which is used to store sequencer commands */
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AppECGCtrl(APPCTRL_START, 0); /* Control BIA measurement to start. Second parameter has no meaning with this command. */
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while(1)
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{
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/* Check if interrupt flag which will be set when interrupt occurred. */
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if(AD5940_GetMCUIntFlag())
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{
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AD5940_ClrMCUIntFlag(); /* Clear this flag */
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temp = APPBUFF_SIZE;
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AppECGISR(AppBuff, &temp); /* Deal with it and provide a buffer to store data we got */
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ECGShowResult(AppBuff, temp); /* Show the results to UART */
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}
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}
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}
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/**
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* @}
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* @}
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* */
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