1 /* Copyright 2023 Unionman Technology Co., Ltd.
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 *
15 */
16
17 #include <stdio.h>
18 #include <stdlib.h>
19 #include "adc_if.h"
20 #include "hdf_log.h"
21 #include "osal_time.h"
22
23 /* 设备号0，通道号1 */
24 #define ADC_DEVICE_NUM 0
25 #define TEMP_CONST (1.8/(0.01*4096))
26
main(int argc,char * argv[])27 int32_t main(int argc, char *argv[])
28 {
29 int32_t ret;
30 uint32_t channelNum = 0;
31 DevHandle adcHandle = NULL;
32 uint32_t read_val = 0;
33 double temperature = 0;
34 // 默认打开通道0，可以输入参数使用其他通道
35 if (argc == 2L) {
36 channelNum=atoi(argv[1]);
37 }
38 /* 打开ADC设备 */
39 adcHandle = AdcOpen(ADC_DEVICE_NUM);
40 if (adcHandle == NULL) {
41 HDF_LOGE("%s: Open ADC%u fail!", __func__, ADC_DEVICE_NUM);
42 return -1;
43 }
44 /* 读取ADC数据 */
45 ret = AdcRead(adcHandle, channelNum, &read_val);
46 if (ret != HDF_SUCCESS) {
47 HDF_LOGE("%s: ADC read fail!:%d", __func__, ret);
48 AdcClose(adcHandle);
49 return -1;
50 }
51 /* 计算温度 */
52 temperature = ((double)read_val) * TEMP_CONST;
53
54 printf("Temperature is %.1f°C\n", temperature);
55
56 /* 访问完毕关闭ADC设备 */
57 AdcClose(adcHandle);
58 return HDF_SUCCESS;
59 }
60