159 lines
5.1 KiB
C
159 lines
5.1 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 "BodyImpedance.h"
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#define APPBUFF_SIZE 512
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uint32_t AppBuff[APPBUFF_SIZE];
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/* It's your choice here how to do with the data. Here is just an example to print them to UART */
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int32_t BIAShowResult(uint32_t *pData, uint32_t DataCount)
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{
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float freq;
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fImpPol_Type *pImp = (fImpPol_Type*)pData;
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AppBIACtrl(BIACTRL_GETFREQ, &freq);
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printf("Freq:%.2f ", freq);
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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("RzMag: %f Ohm , RzPhase: %f \n",pImp[i].Magnitude,pImp[i].Phase*180/MATH_PI);
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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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AGPIOCfg_Type gpio_cfg;
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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_DFT;
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fifo_cfg.FIFOThresh = 4;//AppBIACfg.FifoThresh; /* DFT result. One pair for RCAL, another for Rz. One DFT result have real part and imaginary part */
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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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/* 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|GP4_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_Pin4|AGPIO_Pin5|AGPIO_Pin6;
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gpio_cfg.OutVal = 0;
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gpio_cfg.PullEnSet = 0;
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AD5940_AGPIOCfg(&gpio_cfg);
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AD5940_SleepKeyCtrlS(SLPKEY_UNLOCK); /* Allow AFE to enter sleep mode. */
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return 0;
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}
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/* !!Change the application parameters here if you want to change it to none-default value */
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void AD5940BIAStructInit(void)
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{
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AppBIACfg_Type *pBIACfg;
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AppBIAGetCfg(&pBIACfg);
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pBIACfg->SeqStartAddr = 0;
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pBIACfg->MaxSeqLen = 512; /** @todo add checker in function */
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pBIACfg->RcalVal = 10000.0;
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pBIACfg->DftNum = DFTNUM_8192;
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pBIACfg->NumOfData = -1; /* Never stop until you stop it manually by AppBIACtrl() function */
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pBIACfg->BiaODR = 20; /* ODR(Sample Rate) 20Hz */
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pBIACfg->FifoThresh = 4; /* 4 */
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pBIACfg->ADCSinc3Osr = ADCSINC3OSR_2;
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}
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void AD5940_Main(void)
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{
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static uint32_t IntCount;
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static uint32_t count;
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uint32_t temp;
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AD5940PlatformCfg();
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AD5940BIAStructInit(); /* Configure your parameters in this function */
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AppBIAInit(AppBuff, APPBUFF_SIZE); /* Initialize BIA application. Provide a buffer, which is used to store sequencer commands */
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AppBIACtrl(BIACTRL_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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IntCount++;
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AD5940_ClrMCUIntFlag(); /* Clear this flag */
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temp = APPBUFF_SIZE;
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AppBIAISR(AppBuff, &temp); /* Deal with it and provide a buffer to store data we got */
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BIAShowResult(AppBuff, temp); /* Show the results to UART */
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if(IntCount == 240)
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{
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IntCount = 0;
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//AppBIACtrl(BIACTRL_SHUTDOWN, 0);
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}
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}
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count++;
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if(count > 1000000)
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{
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count = 0;
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//AppBIAInit(0, 0); /* Re-initialize BIA application. Because sequences are ready, no need to provide a buffer, which is used to store sequencer commands */
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//AppBIACtrl(BIACTRL_START, 0); /* Control BIA measurement to start. Second parameter has no meaning with this command. */
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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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