xushaoxiang
110 lines
3.8 KiB
C
110 lines
3.8 KiB
C
/*!
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* \file adc.c
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*
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* \brief Target adc implementation
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*
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* \copyright Revised BSD License, see section \ref LICENSE.
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*
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* \code
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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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* (C) 2022-2025 XinChip
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*
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* \endcode
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*
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* \author ( XinChip ) Alex-J
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*
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* \author ( XinChip )
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*/
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/*-----------------------------------------------------------------------------------
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INCLUDE HEADE FILES
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------------------------------------------------------------------------------------*/
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#include "adc.h"
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#include "xc_drv_adc.h"
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#include "xc_drv_systick.h"
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#include "main.h"
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/*------------------------------------------------------------------------------------
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Macros
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-------------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------------------
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Global Variables
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-------------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------------------
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Functions
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-------------------------------------------------------------------------------------*/
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/**
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* @brief adc_demo
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* @details Sampling once per second with 3.3v reference voltage
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* @param void
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* @retval void
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*/
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void adc_demo(void)
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{
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DEBUG("__ADC_DEMO__\r");
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uint16_t integer;
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uint16_t decimal;
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uint16_t adc_val;
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uint16_t adc_2v48_param;
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uint16_t after_calibrat_adc_val;
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ADC_InitCfg_t adc_cfg ;
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/*----- Special Read the 2.48 v calibration value -----*/
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/*< If the content of the parameter
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storage area is invalid, the default assignment is 10000 >*/
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if(false == xc_adc_2v4_calibrate_read(&adc_2v48_param))
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{
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adc_2v48_param = 10000;
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}
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/*----- Special Pin -----*/
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/*< The SWD and SWCK pins can also be used as ADC pins.
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Pay attention to the function remapping of the PIN pins. >*/
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adc_cfg.Freq = ADC_FREQ_2M;
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adc_cfg.RefVol = ADC_REF_VOL_2_48V;
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adc_cfg.SampEdge = ADC_SAMPEDGE_RISE;
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adc_cfg.ExtDataMode = ADC_EXT_DATA_MODE_32BIT;
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adc_cfg.ExtEdgeSel = ADC_EXT_EDGE_SEL_INTER;
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adc_cfg.ExtSampleNum = ADC_EXT_SAMPLE_NUM_8;
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adc_cfg.ExtTriggerSel = ADC_EXT_TRIGGER_SEL_PWM0;
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xc_adc_init(&adc_cfg);
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while(1)
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{
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xc_adc_start_get_value( ADC_CH5_PIN1 ,&adc_val);
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if(adc_cfg.RefVol == ADC_REF_VOL_3_3V)
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{
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integer = ((adc_val)*ADV_REF_VOLT_3_3V*100)/(1.0*4096)/100;
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decimal = ((uint32_t)((adc_val*ADV_REF_VOLT_3_3V*100)/4096)%100);
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DEBUG("3.3v ref adc_vol=%d.%02d ,adc_val=%d\n", integer, decimal,adc_val);
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}
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else if(adc_cfg.RefVol == ADC_REF_VOL_2_48V)
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{
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after_calibrat_adc_val = adc_val *adc_2v48_param/10000;
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integer = ((adc_val)*ADV_REF_VOLT_2_4_8V*100)/(1.0*4096)/100;
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decimal = ((uint32_t)((adc_val*ADV_REF_VOLT_2_4_8V*100)/4096)%100);
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DEBUG("2.48v ref adc_vol=%d.%02d ,adc_val=%d\n", integer, decimal,adc_val);
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integer = ((after_calibrat_adc_val)*ADV_REF_VOLT_2_4_8V*100)/(1.0*4096)/100;
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decimal = ((uint32_t)((after_calibrat_adc_val*ADV_REF_VOLT_2_4_8V*100)/4096)%100);
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DEBUG("after_calibrat 2.48v ref adc_vol=%d.%02d ,adc_val=%d\n", integer, decimal,after_calibrat_adc_val);
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}
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delay_ms(1000);
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}
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}
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