c
GY80.h
- Committer:
- oprospero
- Date:
- 2013-10-06
- Revision:
- 2:2553ca95fba0
- Parent:
- 1:6909d797972f
- Child:
- 4:cc026f60357a
File content as of revision 2:2553ca95fba0:
#ifndef SENSORS_H #define SENSORS_H #include "mbed.h" #define I2C_FREQ 400000 #define SCL PTC8 #define SDA PTC9 #define ACCEL_ADDRESS (0xA6) // 0x53 = 0xA6 / 2 #define MAGN_ADDRESS (0x3C) // 0x1E = 0x3C / 2 #define GYRO_ADDRESS (0xD2) // 0x68 = 0xD0 / 2 // SENSOR CALIBRATION /*****************************************************************/ // How to calibrate? Read the tutorial at http://dev.qu.tu-berlin.de/projects/sf-razor-9dof-ahrs // Put MIN/MAX and OFFSET readings for your board here! // Accelerometer // "accel x,y,z (min/max) = X_MIN/X_MAX Y_MIN/Y_MAX Z_MIN/Z_MAX" #define ACCEL_X_MIN (-255.0f) #define ACCEL_X_MAX (260.0f) #define ACCEL_Y_MIN (-267.0f) #define ACCEL_Y_MAX (255.0f) #define ACCEL_Z_MIN (-278.0f) #define ACCEL_Z_MAX (238.0f) // Magnetometer // "magn x,y,z (min/max) = X_MIN/X_MAX Y_MIN/Y_MAX Z_MIN/Z_MAX" #define MAGN_X_MIN (-520.0f) #define MAGN_X_MAX (850.0f) #define MAGN_Y_MIN (-640.0f) #define MAGN_Y_MAX (684.0f) #define MAGN_Z_MIN (-213.0f) #define MAGN_Z_MAX (850.0f) // Gyroscope // "gyro x,y,z (current/average) = .../OFFSET_X .../OFFSET_Y .../OFFSET_Z #define GYRO_X_OFFSET (-20.5f) #define GYRO_Y_OFFSET (0.5f) #define GYRO_Z_OFFSET (10.5f) //*****************************************************************************/ #define GRAVITY 255.0f //this equivalent to 1G in the raw data coming from the accelerometer #define ACCEL_X_OFFSET ((ACCEL_X_MIN + ACCEL_X_MAX) / 2.0f) #define ACCEL_Y_OFFSET ((ACCEL_Y_MIN + ACCEL_Y_MAX) / 2.0f) #define ACCEL_Z_OFFSET ((ACCEL_Z_MIN + ACCEL_Z_MAX) / 2.0f) #define ACCEL_X_SCALE (GRAVITY / (ACCEL_X_MAX - ACCEL_X_OFFSET)) #define ACCEL_Y_SCALE (GRAVITY / (ACCEL_Y_MAX - ACCEL_Y_OFFSET)) #define ACCEL_Z_SCALE (GRAVITY / (ACCEL_Z_MAX - ACCEL_Z_OFFSET)) #define MAGN_X_OFFSET ((MAGN_X_MIN + MAGN_X_MAX) / 2.0f) #define MAGN_Y_OFFSET ((MAGN_Y_MIN + MAGN_Y_MAX) / 2.0f) #define MAGN_Z_OFFSET ((MAGN_Z_MIN + MAGN_Z_MAX) / 2.0f) #define MAGN_X_SCALE (100.0f / (MAGN_X_MAX - MAGN_X_OFFSET)) #define MAGN_Y_SCALE (100.0f / (MAGN_Y_MAX - MAGN_Y_OFFSET)) #define MAGN_Z_SCALE (100.0f / (MAGN_Z_MAX - MAGN_Z_OFFSET)) // Gyro gain (conversion from raw to degree per seconds) #define GYRO_GAIN 0.061035156f #define GYRO_GAIN_X 0.061035156f //X axis Gyro gain #define GYRO_GAIN_Y 0.061035156f //Y axis Gyro gain #define GYRO_GAIN_Z 0.061035156f //Z axis Gyro gain #define DEG2RAD(x) (x * 0.01745329252) // *pi/180 #define RAD2DEG(x) (x * 57.2957795131) // *180/pi typedef char byte; class GY80 { public: I2C Wire; GY80(); ~GY80(); void Read_Accel(float* accel_v); void Read_Gyro(float* ); void Read_Magn(float* ); private: short accel[3]; short gyro[3]; short mag[3]; void Accel_Init(); void Gyro_Init(); void Magn_Init(); void Convert(short* value, byte* raw); }; #endif