77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/**
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* @file main.c
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* @brief
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*
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* Copyright (c) 2021 Bouffalolab team
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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*/
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#include "hal_adc.h"
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#include "hal_gpio.h"
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#define ADC_SCAN_NUM (50)
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uint8_t PinList[] = {GPIO_PIN_11, GPIO_PIN_12};
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adc_channel_t posChList[] = {ADC_CHANNEL3};
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adc_channel_t negChList[] = {ADC_CHANNEL4};
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adc_res_val_t result_val;
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struct device* adc_test;
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int main(void)
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{
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bflb_platform_init(0);
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adc_user_cfg_t adc_user_cfg;
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adc_user_cfg.dma_en = DISABLE; // disable dma
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adc_user_cfg.conv_mode = ADC_CON_CONV; // continuous conversion
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adc_user_cfg.in_mode = ADC_DIFFERENTIAL_IN; // differential input mode
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adc_user_cfg.pinList = PinList;
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adc_user_cfg.posChList = posChList;
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adc_user_cfg.negChList = negChList;
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adc_user_cfg.num = sizeof(posChList)/sizeof(adc_channel_t);
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MSG("adc one-shot differential test case \r\n");
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adc_register(ADC0_INDEX, "adc_one_diff", DEVICE_OFLAG_STREAM_RX, &adc_user_cfg);
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adc_test = device_find("adc_one_diff");
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if(adc_test)
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{
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device_open(adc_test, DEVICE_OFLAG_STREAM_RX);
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MSG("adc device find success\r\n");
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}
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device_control(adc_test,DEVICE_CTRL_RESUME,0);
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while (1)
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{
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device_read(adc_test, 0, (void *)&result_val,sizeof(result_val)/sizeof(adc_res_val_t));
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if(result_val.volt <= 0)
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{
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result_val.volt = -result_val.volt;
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MSG("PosId = %d NegId = %d V= -%d mV \r\n",result_val.posChan,result_val.negChan,(uint32_t)(result_val.volt * 1000));
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}
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else
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{
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MSG("PosId = %d NegId = %d V= %d mV \r\n",result_val.posChan,result_val.negChan,(uint32_t)(result_val.volt * 1000));
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}
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// bflb_platform_delay_ms(500);
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}
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} |