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31 lines
845 B
C
31 lines
845 B
C
/*
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* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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// The HAL layer for ADC (common part)
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#include "hal/adc_hal.h"
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#include "hal/adc_hal_conf.h"
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#include "hal/adc_types.h"
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int adc_hal_hall_convert(void)
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{
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int Sens_Vp0;
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int Sens_Vn0;
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int Sens_Vp1;
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int Sens_Vn1;
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int hall_value;
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// convert for 4 times with different phase and outputs
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adc_ll_hall_phase_disable(); // hall phase
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adc_hal_convert( ADC_NUM_1, ADC_CHANNEL_0, &Sens_Vp0 );
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adc_hal_convert( ADC_NUM_1, ADC_CHANNEL_3, &Sens_Vn0 );
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adc_ll_hall_phase_enable();
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adc_hal_convert( ADC_NUM_1, ADC_CHANNEL_0, &Sens_Vp1 );
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adc_hal_convert( ADC_NUM_1, ADC_CHANNEL_3, &Sens_Vn1 );
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hall_value = (Sens_Vp1 - Sens_Vp0) - (Sens_Vn1 - Sens_Vn0);
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return hall_value;
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}
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