热敏电阻传感器，其阻值随着温度的变化而变化，我们通过ADC采集热敏电阻上的电压值，再通过计算得到当前温度信息。
注意：请按照自己热敏电阻的属性，修改代码内对应内容！！！
temperature,c
1 /**
2 * @file temperature.c
3 * @brief
4 * @version 0.1
5 * @date 2019-06-28
6 *
7 * @copyright Copyright (c) 2019 Chipintelli Technology Co., Ltd.
8 *
9 */
10 /*-----------------------------------------------------------------------------
11 include
12 -----------------------------------------------------------------------------*/
13 #include "ci110x_adc.h"
14 #include "ci110x_scu.h"
15 #include "ci110x_uart.h"
16 #include "ci110x_adc.h"
17 #include "ci_misc.h"
18 #include "ci_sensor.h"
19
20 /*-----------------------------------------------------------------------------
21 define
22 -----------------------------------------------------------------------------*/
23 #define RESISTOR (10 * 1000)/*!< 分压电阻阻值 */
24 #define TEMPERATURE_ADC (HAL_ADC_BASE)/*!< ADC控制器 */
25 #define TEMPERATURE_ADC_CHANNEL (ADC_CHANNEL_2)/*!< ADC通道 */
26 #define TEMPERATURE_ADC_PAD (AIN2_PAD)/*!< ADC引脚 */
27
28 /*-----------------------------------------------------------------------------
29 extern
30 -----------------------------------------------------------------------------*/
31 extern void ADC_SetIOReuse(uint8_t channel);
32
33 /*-----------------------------------------------------------------------------
34 struct / enum / union
35 -----------------------------------------------------------------------------*/
36 typedef struct
37 {
38 uint8_t temperature;
39 float min_r;
40 float max_r;
41 }R_SENSOR_RANG;
42
43 /*-----------------------------------------------------------------------------
44 global
45 -----------------------------------------------------------------------------*/
46 /**
47 * @brief 电压-温度对应表
48 *
49 */
50 R_SENSOR_RANG r_sensor_list[]=
51 {
52 {0,31.602,33.006 },
53 {1,30.097,31.402 },
54 {2,28.667,29.881 },
55 {3,27.310,28.439 },
56 {4,26.022,27.071 },
57 {5,24.799,25.774 },
58 {6,23.638,24.543 },
59 {7,22.535,23.376 },
60 {8,21.488,22.268 },
61 {9,20.494,21.218 },
62 {10,19.550,20.221 },
63 {11,18.653,19.275 },
64 {12,17.801,18.378 },
65 {13,16.992,17.526 },
66 {14,16.224,16.717 },
67 {15,15.493,15.950 },
68 {16,14.799,15.221 },
69 {17,14.139,14.529 },
70 {18,13.512,13.872 },
71 {19,12.915,13.247 },
72 {20,12.348,12.654 },
73 {21,11.809,12.090 },
74 {22,11.295,11.554 },
75 {23,10.807,11.045 },
76 {24,10.342,10.561 },
77 {25,9.900,10.100 },
78 {26,9.471,9.670 },
79 {27,9.062,9.261 },
80 {28,8.673,8.872 },
81 {29,8.303,8.501 },
82 {30,7.951,8.147 },
83 {31,7.615,7.810 },
84 {32,7.296,7.489 },
85 {33,6.992,7.182 },
86 {34,6.702,6.890 },
87 {35,6.425,6.611 },
88 {36,6.162,6.346 },
89 {37,5.911,6.092 },
90 {38,5.671,5.850 },
91 {39,5.442,5.618 },
92 {40,5.224,5.398 },
93 {41,5.016,5.187 },
94 {42,4.818,4.985 },
95 {43,4.628,4.793 },
96 {44,4.447,4.609 },
97 {45,4.273,4.433 },
98 {46,4.108,4.265 },
99 {47,3.950,4.104 },
100 {48,3.799,3.950 },
101 {49,3.654,3.802 },
102 {50,3.516,3.661 },
103 };
104
105 /*-----------------------------------------------------------------------------
106 declare
107 -----------------------------------------------------------------------------*/
108
109 /*-----------------------------------------------------------------------------
110 function
111 -----------------------------------------------------------------------------*/
112
113 /**
114 * @brief 读取温度值
115 *
116 * @param voltage
117 * @return unsigned char
118 */
119 unsigned char Caculate_Temperature(float voltage)
120 {
121 float Resis = 0;
122 unsigned char Temprature = -1;
123 Resis = (RESISTOR * voltage) / (3.3 - voltage);
124 for(int i = 0;i < 51;i++)
125 {
126 float temp1 = (r_sensor_list[i].min_r)*1000;
127 float temp2 = (r_sensor_list[i].max_r)*1000;
128 if((Resis >= temp1) && (Resis <= temp2))
129 {
130 Temprature = r_sensor_list[i].temperature;
131 break;
132 }
133 }
134 return Temprature;
135 }
136
137 /**
138 * @brief 初始化温度传感器
139 *
140 * @param irq_callback 中断回调
141 * @retval RETURN_OK
142 * @retval RETURN_ERR
143 */
144 int32_t temperature_open(void)
145 {
146 #if 0
147 Scu_Setdiv_Parameter(TEMPERATURE_ADC,63);
148 Scu_SetDeviceGate(TEMPERATURE_ADC,1);
149 Scu_SetIOReuse(TEMPERATURE_ADC_PAD,FIRST_FUNCTION);
150 ADC_SetIOReuse(TEMPERATURE_ADC_CHANNEL);
151 adc_power_ctrl(ENABLE);
152 adc_continuons_convert(DISABLE);
153 adc_period_enable(ENABLE);
154 adc_period_monitor(TEMPERATURE_ADC_CHANNEL,ENABLE);
155 adc_chax_period(TEMPERATURE_ADC_CHANNEL,62);
156 adc_calibrate(DISABLE);
157 adc_int_sel(ADC_INT_MODE_TRANS_END);
158 adc_mask_int(DISABLE);
159 adc_convert_config(TEMPERATURE_ADC_CHANNEL,ADC_CLKCYCLE_1);
160 #else
161 adc_init_cycle_mode(TEMPERATURE_ADC_CHANNEL,4,NULL);
162 #endif
163 return RETURN_OK;
164 }
165
166 /**
167 * @brief 读取温度
168 *
169 * @param data 读到的数据
170 * @retval RETURN_OK
171 * @retval RETURN_ERR
172 */
173 int32_t temperature_read(sensor_data_t *data)
174 {
175 float temp,adc_value;
176 int real_temperature;
177 temp = adc_get_result(TEMPERATURE_ADC_CHANNEL);
178 adc_value = ((temp/4096)*3.3);
179 real_temperature = Caculate_Temperature(adc_value);
180 if(0xFF != real_temperature)
181 {
182 sensor_data_inform(SENSOR_TYPE_TEMPERATURE);
183 data->temperature = real_temperature * 10;
184 }
185 return RETURN_OK;
186 }
187
188 /**
189 * @brief 温度传感器ops
190 *
191 */
192 sensor_ops_t temperature_ops =
193 {
194 temperature_open,
195 temperature_read,
196 };
197
198 /*-----------------------------------------------------------------------------
199 end of the file
200 -----------------------------------------------------------------------------*/
temperature,h
1 /**
2 * @file temperature.h
3 * @brief 温度传感器的头文件
4 * @version 0.1
5 * @date 2019-07-02
6 *
7 * @copyright Copyright (c) 2019 Chipintelli Technology Co., Ltd.
8 *
9 */
10
11 #ifndef __TEMPERATURE_H__
12 #define __TEMPERATURE_H__
13
14 /**
15 * @ingroup third_device_driver
16 * @defgroup 热敏电阻
17 * @brief 热敏电阻传感器驱动
18 * @{
19 */
20
21 #ifdef __cplusplus
22 extern "C" {
23 #endif
24
25 /*-----------------------------------------------------------------------------
26 include
27 -----------------------------------------------------------------------------*/
28 #include "ci_sensor.h"
29
30 /*-----------------------------------------------------------------------------
31 define
32 -----------------------------------------------------------------------------*/
33
34 /*-----------------------------------------------------------------------------
35 extern
36 -----------------------------------------------------------------------------*/
37 extern sensor_ops_t temperature_ops;
38
39 /*-----------------------------------------------------------------------------
40 struct / enum / union
41 -----------------------------------------------------------------------------*/
42
43 /*-----------------------------------------------------------------------------
44 global
45 -----------------------------------------------------------------------------*/
46
47 /*-----------------------------------------------------------------------------
48 function declare
49 -----------------------------------------------------------------------------*/
50
51 #ifdef __cplusplus
52 }
53 #endif
54
55 /**
56 * @}
57 */
58
59 #endif
60
61 /*-----------------------------------------------------------------------------
62 end of the file
63 -----------------------------------------------------------------------------*/