139 lines
5.0 KiB
C
139 lines
5.0 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 Battery_Example
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* @{
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*/
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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 "BATImpedance.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 BATShowResult(uint32_t *pData, uint32_t DataCount)
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{
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fImpCar_Type *pImp = (fImpCar_Type*)pData;
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float freq;
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AppBATCtrl(BATCTRL_GETFREQ, &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("Freq: %f (real, image) = ,%f , %f ,mOhm \n",freq, pImp[i].Real,pImp[i].Image);
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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; //on battery board, there is a 32MHz crystal.
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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;//AppBATCfg.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 = GP0_INT|GP2_SYNC;
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gpio_cfg.InputEnSet = AGPIO_Pin2;
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gpio_cfg.OutputEnSet = AGPIO_Pin0|AGPIO_Pin2;
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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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void AD5940BATStructInit(void)
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{
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AppBATCfg_Type *pBATCfg;
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AppBATGetCfg(&pBATCfg);
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pBATCfg->SeqStartAddr = 0;
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pBATCfg->MaxSeqLen = 512;
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pBATCfg->RcalVal = 50.0; /* Value of RCAL on EVAL-AD5941BATZ board is 50mOhm */
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pBATCfg->ACVoltPP = 300.0f; /* Pk-pk amplitude is 300mV */
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pBATCfg->DCVolt = 1200.0f; /* Offset voltage of 1.2V*/
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pBATCfg->DftNum = DFTNUM_8192;
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pBATCfg->FifoThresh = 2; /* 2 results in FIFO, real and imaginary part. */
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pBATCfg->SinFreq = 200; /* Sin wave frequency. THis value has no effect if sweep is enabled */
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pBATCfg->SweepCfg.SweepEn = bTRUE; /* Set to bTRUE to enable sweep function */
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pBATCfg->SweepCfg.SweepStart = 1.0f; /* Start sweep at 1Hz */
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pBATCfg->SweepCfg.SweepStop = 50000.0f; /* Finish sweep at 1000Hz */
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pBATCfg->SweepCfg.SweepPoints = 50; /* 100 frequencies in the sweep */
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pBATCfg->SweepCfg.SweepLog = bTRUE; /* Set to bTRUE to use LOG scale. Set bFALSE to use linear scale */
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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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AD5940BATStructInit(); /* Configure your parameters in this function */
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AppBATInit(AppBuff, APPBUFF_SIZE); /* Initialize BAT application. Provide a buffer, which is used to store sequencer commands */
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AppBATCtrl(BATCTRL_MRCAL, 0); /* Measur RCAL each point in sweep */
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AppBATCtrl(BATCTRL_START, 0);
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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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AppBATISR(AppBuff, &temp); /* Deal with it and provide a buffer to store data we got */
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AD5940_Delay10us(100000);
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BATShowResult(AppBuff, temp); /* Print measurement results over UART */
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AD5940_SEQMmrTrig(SEQID_0); /* Trigger next measurement ussing MMR write*/
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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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