79 lines
2.5 KiB
C
79 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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adc_channel_t posChList[] = { ADC_CHANNEL3 };
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adc_channel_t negChList[] = { ADC_CHANNEL4 };
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adc_channel_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_channel_cfg_t adc_channel_cfg;
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adc_channel_cfg.pos_channel = posChList;
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adc_channel_cfg.neg_channel = negChList;
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adc_channel_cfg.num = 1;
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adc_register(ADC0_INDEX, "adc");
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adc_test = device_find("adc");
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if (adc_test) {
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ADC_DEV(adc_test)->differential_mode = ENABLE;
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device_open(adc_test, DEVICE_OFLAG_STREAM_RX);
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if (device_control(adc_test, DEVICE_CTRL_ADC_CHANNEL_CONFIG, &adc_channel_cfg) == ERROR) {
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MSG("ADC channel config error , Please check the channel corresponding to IO is initial success by board system or Channel is invaild \r\n");
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BL_CASE_FAIL;
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while (1)
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;
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}
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MSG("adc device find success\r\n");
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}
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for (uint32_t i = 0; i < ADC_SCAN_NUM; i++) {
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adc_channel_start(adc_test);
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device_read(adc_test, 0, (void *)&result_val, 1); /*max size is 32*/
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if (result_val.volt <= 0) {
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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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} else {
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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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BL_CASE_SUCCESS;
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while (1) {
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bflb_platform_delay_ms(100);
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}
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} |