标题: bmp085气压传感器与STM32F031的I2C代码调试结果 [打印本页]

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作者: hanyafeng    时间: 2018-10-16 08:41
标题: bmp085气压传感器与STM32F031的I2C代码调试结果

1. /* Includes ------------------------------------------------------------------*/
   
2. #include "bmp085.h"
   
3. 
   
4. /* Private typedef -----------------------------------------------------------*/
   
5. /* Private define ------------------------------------------------------------*/
   
6. /* Private macro -------------------------------------------------------------*/
   
7. /* Private variables ---------------------------------------------------------*/
   
8. //uint8_t oss;
   
9. int16_t ac1, ac2, ac3, b1, b2, mb, mc, md;
   
10. uint16_t ac4, ac5, ac6;
    
11. int32_t ut, up, BMP085_Temperature, BMP085_Pressure;
    
12. BMP085_OSS_TypeDef oss;
    
13. 
    
14. /* Private function prototypes -----------------------------------------------*/
    
15. /* Private functions ---------------------------------------------------------*/
    
16. /**
    
17.   * @brief  BMP085¶á¼ÆËãÏμêyoˉêy￡¬òÔ±ã½øDD¼ÆËãÕæÕyμÄζèoíÑ1Ç¿
    
18.   * @param  ÎT
    
19.   * @retval ÎT
    
20.   */
    
21. void BMP085_Read_Calibration_Data(void)
    
22. {
    
23.   uint8_t BMP085_Calibration_Data_Buffer[BMP085_CAL_COE_NUMBER];
    
24. 
    
25.   if(I2C1_Read_NBytes(BMP085_ADDR, BMP085_CAL_COE_STA_ADDR, BMP085_CAL_COE_NUMBER, BMP085_Calibration_Data_Buffer) == I2C_FAIL)
    
26.   {
    
27.     BMP085_TIMEOUT_UserCallback();
    
28.   }
    
29. 
    
30.   ac1 = (((int16_t)BMP085_Calibration_Data_Buffer[0]) << 8) + BMP085_Calibration_Data_Buffer[1];
    
31.   ac2 = (((int16_t)BMP085_Calibration_Data_Buffer[2]) << 8) + BMP085_Calibration_Data_Buffer[3];
    
32.   ac3 = (((int16_t)BMP085_Calibration_Data_Buffer[4]) << 8) + BMP085_Calibration_Data_Buffer[5];
    
33.   ac4 = (((uint16_t)BMP085_Calibration_Data_Buffer[6]) << 8) + BMP085_Calibration_Data_Buffer[7];
    
34.   ac5 = (((uint16_t)BMP085_Calibration_Data_Buffer[8]) << 8) + BMP085_Calibration_Data_Buffer[9];
    
35.   ac6 = (((uint16_t)BMP085_Calibration_Data_Buffer[10]) << 8) + BMP085_Calibration_Data_Buffer[11];
    
36.   b1 = (((int16_t)BMP085_Calibration_Data_Buffer[12]) << 8) + BMP085_Calibration_Data_Buffer[13];
    
37.   b2 = (((int16_t)BMP085_Calibration_Data_Buffer[14]) << 8) + BMP085_Calibration_Data_Buffer[15];
    
38.   mb = (((int16_t)BMP085_Calibration_Data_Buffer[16]) << 8) + BMP085_Calibration_Data_Buffer[17];
    
39.   mc = (((int16_t)BMP085_Calibration_Data_Buffer[18]) << 8) + BMP085_Calibration_Data_Buffer[19];
    
40.   md = (((int16_t)BMP085_Calibration_Data_Buffer[20]) << 8) + BMP085_Calibration_Data_Buffer[21];
    
41. }
    
42. 
    
43. /**
    
44.   * @brief  éèÖÃ2éÑùÄ￡ê½oˉêy
    
45.   * @param  oss_ValueéèÖÃμÄ2éÑùÄ￡ê½
    
46.   * @retval ÎT
    
47.   */
    
48. void BMP085_Set_OSS(BMP085_OSS_TypeDef oss_Value)
    
49. {
    
50.   oss = oss_Value;
    
51. }
    
52. 
    
53. /**
    
54.   * @brief  BMP0853õê¼»ˉoˉêy￡¬°ü਼ÆËãÏμêyoí2éÑùÄ￡ê½
    
55.   * @param  oss_ValueéèÖÃμÄ2éÑùÄ￡ê½
    
56.   * @retval ÎT
    
57.   */
    
58. void BMP085_Init(BMP085_OSS_TypeDef oss_Value)
    
59. {
    
60.   BMP085_Read_Calibration_Data();
    
61.   BMP085_Set_OSS(oss_Value);
    
62. }
    
63. 
    
64. /**
    
65.   * @brief  BMP085¶áÎ′D￡ÕyμÄζèÖμ
    
66.   * @param  ÎT
    
67.   * @retval ÎT
    
68.   */
    
69. void BMP085_Read_UnComPensated_Temperature(void)
    
70. {
    
71.   uint8_t BMP085_Temperature_Data_Buffer[BMP085_TEMPERATURE_NUMBER];
    
72. 
    
73.   uint8_t BMP085_Cmd = BMP085_TEMPERATURE_CMD;
    
74. 
    
75.   if(I2C1_Write_NBytes(BMP085_ADDR, BMP085_CMD_ADDR, 1, &BMP085_Cmd) == I2C_FAIL)
    
76.   {
    
77.     BMP085_TIMEOUT_UserCallback();
    
78.   }
    
79. 
    
80.   Delay(BMP085_TEMPERATURE_DEL);
    
81. 
    
82.   if(I2C1_Read_NBytes(BMP085_ADDR, BMP085_VALUE_MSB_ADDR, BMP085_TEMPERATURE_NUMBER, BMP085_Temperature_Data_Buffer) == I2C_FAIL)
    
83.   {
    
84.     BMP085_TIMEOUT_UserCallback();
    
85.   }
    
86. 
    
87.   ut = (((int32_t)BMP085_Temperature_Data_Buffer[0]) << 8) + BMP085_Temperature_Data_Buffer[1];
    
88. }
    
89. 
    
90. /**
    
91.   * @brief  BMP085¶áÎ′D￡ÕyμÄÑ1Ç¿Öμ
    
92.   * @param  ÎT
    
93.   * @retval ÎT
    
94.   */
    
95. void BMP085_Read_Uncompensated_Pressure(void)
    
96. {
    
97.   uint8_t BMP085_Pressure_Data_Buffer[BMP085_PRESSURE_NUMBER];
    
98. 
    
99.   uint8_t BMP085_Cmd = BMP085_PRESSURE_CMD + (oss << 6);
    
100. 
     
101.   if(I2C1_Write_NBytes(BMP085_ADDR, BMP085_CMD_ADDR, 1, &BMP085_Cmd) == I2C_FAIL)
     
102.   {
     
103.     BMP085_TIMEOUT_UserCallback();
     
104.   }
     
105. 
     
106.   switch(oss)
     
107.   {
     
108.     case ULTRA_LOW_POWER:
     
109.       Delay(BMP085_PRESSURE_ULP_DEL);
     
110.       break;
     
111.     case STANDARD:
     
112.       Delay(BMP085_PRESSURE_STD_DEL);
     
113.       break;
     
114.     case HIGH_RESOLUTION:
     
115.       Delay(BMP085_PRESSURE_HR_DEL);
     
116.       break;
     
117.     case ULTRA_HIGH_RESOLUTION:
     
118.       Delay(BMP085_PRESSURE_UHR_DEL);
     
119.       break;
     
120.   }
     
121. 
     
122.   if(I2C1_Read_NBytes(BMP085_ADDR, BMP085_VALUE_MSB_ADDR, BMP085_PRESSURE_NUMBER, BMP085_Pressure_Data_Buffer) == I2C_FAIL)
     
123.   {
     
124.     BMP085_TIMEOUT_UserCallback();
     
125.   }
     
126. 
     
127.   up = ((((int32_t)BMP085_Pressure_Data_Buffer[0]) << 16) + (((int32_t)BMP085_Pressure_Data_Buffer[1]) << 8) + BMP085_Pressure_Data_Buffer[2]) >> (8 - oss);
     
128. }
     
129. 
     
130. /**
     
131.   * @brief  ¼ÆËãÕæÕyμÄζèÑ1Ç¿Öμ
     
132.   * @param  ÎT
     
133.   * @retval ÎT
     
134.   */
     
135. void BMP085_Calculate_Temp_Pres(void)
     
136. {
     
137.   int32_t x1, x2, x3, b3, b5, b6, b7;
     
138.   uint32_t b4;
     
139. 
     
140.   x1 = (ut - ac6) * ac5 / 32768;
     
141.   x2 = mc * 2048 / (x1 + md);
     
142.   b5 = x1 + x2;
     
143.   BMP085_Temperature = (b5 + 8) / 16;
     
144. 
     
145.   b6 = b5 - 4000;
     
146.   x1 = (b2 * (b6 * b6 / 4096)) / 2048;
     
147.   x2 = ac2 * b6 / 2048;
     
148.   x3 = x1 + x2;
     
149.   b3 = (((ac1 * 4 + x3) << oss) + 2) / 4;
     
150.   x1 = ac3 * b6 / 8192;
     
151.   x2 = (b1 * (b6 * b6 / 4096)) / 65536;
     
152.   x3 = ((x1 + x2) + 2) / 4;
     
153.   b4 = ac4 * (uint32_t)(x3 + 32768) / 32768;
     
154.   b7 = ((uint32_t)up - b3) * (50000 >> oss);
     
155.   if(b7 < 0x80000000)
     
156.   {
     
157.     BMP085_Pressure = (b7 * 2) / b4;
     
158.   }
     
159.   else
     
160.   {
     
161.     BMP085_Pressure = (b7 / b4) * 2;
     
162.   }
     
163.   x1 = (BMP085_Pressure / 256) * (BMP085_Pressure / 256);
     
164.   x1 = (x1 * 3038) / 65536;
     
165.   x2 = ( -7357 * BMP085_Pressure) / 65536;
     
166.   BMP085_Pressure = BMP085_Pressure + (x1 + x2 + 3791) / 16;
     
167. }
     
168. 
     
169. /**
     
170.   * @brief  BMP085μÄI2C2ù×÷3¬ê±oˉêy￡¬′Ë′|Î′¶¨òåÄúèY
     
171.   * @param  ÎT
     
172.   * @retval ÎT
     
173.   */
     
174. void BMP085_TIMEOUT_UserCallback(void)
     
175. {
     
176.   while (1)
     
177.   {   
     
178.   }
     
179. }
     
180. 
     
181. /* Define to prevent recursive inclusion -------------------------------------*/
     
182. #ifndef __BMP085_H
     
183. #define __BMP085_H
     
184. 
     
185. /* Includes ------------------------------------------------------------------*/
     
186. #include "i2c1.h"
     
187. #include "main.h"
     
188. 
     
189. /* Exported types ------------------------------------------------------------*/
     
190. /*BMP085¼ì2aÆøÑ1Ä￡ê½*/
     
191. typedef enum
     
192. {
     
193.   ULTRA_LOW_POWER                                 = 0,
     
194.   STANDARD                                        = 1,
     
195.   HIGH_RESOLUTION                                 = 2,
     
196.   ULTRA_HIGH_RESOLUTION                           = 3
     
197. 
     
198. }BMP085_OSS_TypeDef;
     
199. 
     
200. /* Exported constants --------------------------------------------------------*/
     
201. /*BMP085Æ÷¼tμØÖ·*/
     
202. #define BMP085_ADDR                               0xEE
     
203. 
     
204. /*BMP085¼ÆËãÏμêy′æ·ÅμØÖ·Æeê¼*/
     
205. #define BMP085_CAL_COE_STA_ADDR                   0xAA
     
206. /*BMP085¼ÆËãÏμêy×Ö½úêy*/
     
207. #define BMP085_CAL_COE_NUMBER                     22
     
208. 
     
209. /*BMP085μÄÃüáî¼Ä′æÆ÷μØÖ·*/
     
210. #define BMP085_CMD_ADDR                          0xF4
     
211. 
     
212. /*BMP085μļì2aζèÃüáî*/
     
213. #define BMP085_TEMPERATURE_CMD                   0x2E
     
214. 
     
215. /*BMP085μļì2aÆøÑ1Ãüáî*/
     
216. #define BMP085_PRESSURE_CMD                      0x34
     
217. 
     
218. /*BMP085¼ì2aÖμ¼Ä′æÆ÷*/
     
219. #define BMP085_VALUE_MSB_ADDR                    0xF6
     
220. #define BMP085_VALUE_LSB_ADDR                    0xF7
     
221. #define BMP085_VALUE_XLSB_ADDR                   0xF8
     
222. 
     
223. /*BMP085ζèÖμ×Ö½ú3¤¶è*/
     
224. #define BMP085_TEMPERATURE_NUMBER                 2
     
225. 
     
226. /*BMP085ÆøÑ1Öμ×Ö½ú3¤¶è*/
     
227. #define BMP085_PRESSURE_NUMBER                    3
     
228. 
     
229. /*BMP085¼ì2aζèóÃê±,μ￥λÎa0.1ms*/
     
230. #define BMP085_TEMPERATURE_DEL                    45
     
231. 
     
232. /*BMP0852»í¬¼ì2aÆøÑ1Ä￡ê½ÏÂóÃê±￡¬μ￥λÎa0.1ms*/
     
233. #define BMP085_PRESSURE_ULP_DEL                   45
     
234. #define BMP085_PRESSURE_STD_DEL                   75
     
235. #define BMP085_PRESSURE_HR_DEL                    135
     
236. #define BMP085_PRESSURE_UHR_DEL                   255
     
237. 
     
238. /* Exported macro ------------------------------------------------------------*/
     
239. /* Exported functions ------------------------------------------------------- */
     
240. void BMP085_Read_Calibration_Data(void);
     
241. void BMP085_Set_OSS(BMP085_OSS_TypeDef oss_Value);
     
242. void BMP085_Init(BMP085_OSS_TypeDef oss_Value);
     
243. void BMP085_Read_UnComPensated_Temperature(void);
     
244. void BMP085_Read_Uncompensated_Pressure(void);
     
245. void BMP085_Calculate_Temp_Pres(void);
     
246. void BMP085_TIMEOUT_UserCallback(void);
     
247. 
     
248. #endif

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