mpu6050 与arduino链接失败

948494542

我是按照VCC--VCC GND--GND SCL--A5 SDA--A4链接的啊  但是数据全是0  用HMC5883也读不出数据来  好像不是程序的问题 换了几个都都不出来   大神快来帮帮我啊

948494542

代码

1. // I2C device class (I2Cdev) demonstration Arduino sketch for MPU6050 class
   
2. // 10/7/2011 by Jeff Rowberg <[email][email protected][/email]>
   
3. // Updates should (hopefully) always be available at https://github.com/jrowberg/i2cdevlib
   
4. //
   
5. // Changelog:
   
6. //     2011-10-07 - initial release
   
7. 
   
8. /* ============================================
   
9. I2Cdev device library code is placed under the MIT license
   
10. Copyright (c) 2011 Jeff Rowberg
    
11. 
    
12. Permission is hereby granted, free of charge, to any person obtaining a copy
    
13. of this software and associated documentation files (the "Software"), to deal
    
14. in the Software without restriction, including without limitation the rights
    
15. to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    
16. copies of the Software, and to permit persons to whom the Software is
    
17. furnished to do so, subject to the following conditions:
    
18. 
    
19. The above copyright notice and this permission notice shall be included in
    
20. all copies or substantial portions of the Software.
    
21. 
    
22. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    
23. IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    
24. FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    
25. AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    
26. LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    
27. OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    
28. THE SOFTWARE.
    
29. ===============================================
    
30. */
    
31. 
    
32. // Arduino Wire library is required if I2Cdev I2CDEV_ARDUINO_WIRE implementation
    
33. // is used in I2Cdev.h
    
34. #include "Wire.h"
    
35. 
    
36. // I2Cdev and MPU6050 must be installed as libraries, or else the .cpp/.h files
    
37. // for both classes must be in the include path of your project
    
38. #include "I2Cdev.h"
    
39. #include "MPU6050.h"
    
40. 
    
41. // class default I2C address is 0x68
    
42. // specific I2C addresses may be passed as a parameter here
    
43. // AD0 low = 0x68 (default for InvenSense evaluation board)
    
44. // AD0 high = 0x69
    
45. MPU6050 accelgyro;
    
46. 
    
47. int16_t ax, ay, az;
    
48. int16_t gx, gy, gz;
    
49. 
    
50. #define LED_PIN 13
    
51. bool blinkState = false;
    
52. 
    
53. void setup() {
    
54.     // join I2C bus (I2Cdev library doesn't do this automatically)
    
55.     Wire.begin();
    
56. 
    
57.     // initialize serial communication
    
58.     // (38400 chosen because it works as well at 8MHz as it does at 16MHz, but
    
59.     // it's really up to you depending on your project)
    
60.     Serial.begin(38400);
    
61. 
    
62.     // initialize device
    
63.     Serial.println("Initializing I2C devices...");
    
64.     accelgyro.initialize();
    
65. 
    
66.     // verify connection
    
67.     Serial.println("Testing device connections...");
    
68.     Serial.println(accelgyro.testConnection() ? "MPU6050 connection successful" : "MPU6050 connection failed");
    
69. 
    
70.     // configure Arduino LED for
    
71.     pinMode(LED_PIN, OUTPUT);
    
72. }
    
73. 
    
74. void loop() {
    
75.     // read raw accel/gyro measurements from device
    
76.     accelgyro.getMotion6(&ax, &ay, &az, &gx, &gy, &gz);
    
77. 
    
78.     // these methods (and a few others) are also available
    
79.     //accelgyro.getAcceleration(&ax, &ay, &az);
    
80.     //accelgyro.getRotation(&gx, &gy, &gz);
    
81. 
    
82.     // display tab-separated accel/gyro x/y/z values
    
83.     Serial.print("a/g:\t");
    
84.     Serial.print(ax); Serial.print("\t");
    
85.     Serial.print(ay); Serial.print("\t");
    
86.     Serial.print(az); Serial.print("\t");
    
87.     Serial.print(gx); Serial.print("\t");
    
88.     Serial.print(gy); Serial.print("\t");
    
89.     Serial.println(gz);
    
90. 
    
91.     // blink LED to indicate activity
    
92.     blinkState = !blinkState;
    
93.     digitalWrite(LED_PIN, blinkState);
    
94. }

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落点人

看看MPU6050上，SCL和SDA焊好了没，很可能是虚焊

Super169

先說清楚你用的是什麼板, 不是所有 arudino 板的 SDA/SCL 都是 A4/A5 的.