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Using WiringPi in Qt and Raspberry Pi problem



  • Hi,
    I want to use WiringPi library. I want to port below C program to Qt but an error appeared in

    MPU6050_Init();		                 /* Initializes MPU6050 */
    	
    

    line. Complete code is:

    /*
    	MPU6050 Interfacing with Raspberry Pi
    	http://www.electronicwings.com
    */
    
    #include <wiringPiI2C.h>
    #include <stdlib.h>
    #include <stdio.h>
    #include <wiringPi.h>
    
    #define Device_Address 0x68	/*Device Address/Identifier for MPU6050*/
    
    #define PWR_MGMT_1   0x6B
    #define SMPLRT_DIV   0x19
    #define CONFIG       0x1A
    #define GYRO_CONFIG  0x1B
    #define INT_ENABLE   0x38
    #define ACCEL_XOUT_H 0x3B
    #define ACCEL_YOUT_H 0x3D
    #define ACCEL_ZOUT_H 0x3F
    #define GYRO_XOUT_H  0x43
    #define GYRO_YOUT_H  0x45
    #define GYRO_ZOUT_H  0x47
    
    int fd;
    
    void MPU6050_Init(){
    	
    	wiringPiI2CWriteReg8 (fd, SMPLRT_DIV, 0x07);	/* Write to sample rate register */
    	wiringPiI2CWriteReg8 (fd, PWR_MGMT_1, 0x01);	/* Write to power management register */
    	wiringPiI2CWriteReg8 (fd, CONFIG, 0);		/* Write to Configuration register */
    	wiringPiI2CWriteReg8 (fd, GYRO_CONFIG, 24);	/* Write to Gyro Configuration register */
    	wiringPiI2CWriteReg8 (fd, INT_ENABLE, 0x01);	/*Write to interrupt enable register */
    
    	} 
    short read_raw_data(int addr){
    	short high_byte,low_byte,value;
    	high_byte = wiringPiI2CReadReg8(fd, addr);
    	low_byte = wiringPiI2CReadReg8(fd, addr+1);
    	value = (high_byte << 8) | low_byte;
    	return value;
    }
    
    void ms_delay(int val){
    	int i,j;
    	for(i=0;i<=val;i++)
    		for(j=0;j<1200;j++);
    }
    
    int main(){
    	
    	float Acc_x,Acc_y,Acc_z;
    	float Gyro_x,Gyro_y,Gyro_z;
    	float Ax=0, Ay=0, Az=0;
    	float Gx=0, Gy=0, Gz=0;
    	fd = wiringPiI2CSetup(Device_Address);   /*Initializes I2C with device Address*/
    	MPU6050_Init();		                 /* Initializes MPU6050 */
    	
    	while(1)
    	{
    		/*Read raw value of Accelerometer and gyroscope from MPU6050*/
    		Acc_x = read_raw_data(ACCEL_XOUT_H);
    		Acc_y = read_raw_data(ACCEL_YOUT_H);
    		Acc_z = read_raw_data(ACCEL_ZOUT_H);
    		
    		Gyro_x = read_raw_data(GYRO_XOUT_H);
    		Gyro_y = read_raw_data(GYRO_YOUT_H);
    		Gyro_z = read_raw_data(GYRO_ZOUT_H);
    		
    		/* Divide raw value by sensitivity scale factor */
    		Ax = Acc_x/16384.0;
    		Ay = Acc_y/16384.0;
    		Az = Acc_z/16384.0;
    		
    		Gx = Gyro_x/131;
    		Gy = Gyro_y/131;
    		Gz = Gyro_z/131;
    		
    		printf("\n Gx=%.3f °/s\tGy=%.3f °/s\tGz=%.3f °/s\tAx=%.3f g\tAy=%.3f g\tAz=%.3f g\n",Gx,Gy,Gz,Ax,Ay,Az);
    		delay(500);
    		
    	}
    	return 0;
    }
    

    Regards,
    Mucip:)


  • Lifetime Qt Champion

    Hi
    What error ?


  • Lifetime Qt Champion

    Hi
    What error ?



  • Hi,
    Please forgive me. I solved it. Thanks...

    Regards,
    Mucip:)


  • Lifetime Qt Champion

    @Mucip Then don't forget to mark this topic as SOLVED too.

    Even better would be to tell us what went wrong and how you fixed it. We are curios :)



  • Dear @aha_1980 ,
    It's pitty for me infact. I forgot the create fınction when I copy it from C to Qt.

    Sorry... :)

    void MPU6050_Init(){
    	
    	wiringPiI2CWriteReg8 (fd, SMPLRT_DIV, 0x07);	/* Write to sample rate register */
    	wiringPiI2CWriteReg8 (fd, PWR_MGMT_1, 0x01);	/* Write to power management register */
    	wiringPiI2CWriteReg8 (fd, CONFIG, 0);		/* Write to Configuration register */
    	wiringPiI2CWriteReg8 (fd, GYRO_CONFIG, 24);	/* Write to Gyro Configuration register */
    	wiringPiI2CWriteReg8 (fd, INT_ENABLE, 0x01);	/*Write to interrupt enable register */
    
    	} 
    

    Regards,
    Mucip:)


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