MPU9250 library using dmp, it uses sparkfun arduino library and invensense Motion driver 6.1.
Dependencies: MotionDriver_6_1 SparkFunMPU9250-DMP mbed
main.cpp
- Committer:
- mbedoguz
- Date:
- 2017-08-14
- Revision:
- 8:b9206956f396
- Parent:
- 7:a862072e0981
- Child:
- 9:9045a44aff24
File content as of revision 8:b9206956f396:
#include "SparkFunMPU9250-DMP.h" #include "mdcompat.h" Serial pc(USBTX,USBRX); DigitalOut led(LED1); MPU9250_DMP imu; unsigned char whoami[1]={0}; unsigned char fifo_count[2]={32,32}; unsigned char temp[1]={32}; unsigned char outbuff[4]; unsigned char inbuff[4]; unsigned char regadd; char registeradress[5]; unsigned char registerdata[]={33}; void printIMUData(void); int main() { pc.baud(115200); pc.printf("Hello World\n"); imu_init(); stamper_init(); #if 1//Regular program // Call imu.begin() to verify communication and initialize if (imu.begin() != INV_SUCCESS){ while (1){ pc.printf("Unable to communicate with MPU-9250"); pc.printf("Check connections, and try again.\n"); wait_ms(5000); } } pc.printf("imu.begin() suceeded\n"); if(imu.dmpBegin(DMP_FEATURE_6X_LP_QUAT | // Enable 6-axis quat DMP_FEATURE_GYRO_CAL, // Use gyro calibration 150)==INV_ERROR){ // Set DMP FIFO rate to 150 Hz pc.printf("imu.dmpBegin have failed\n");//dmpLoad function under it fails which is caused by memcmp(firmware+ii, cur, this_write) (it is located at row 2871 of inv_mpu.c) } else{ pc.printf("imu.dmpBegin() suceeded\n"); } pc.printf("$GETEU,*\n"); #endif #if 0//this scope is only for debugging purposes of mbed_i2c_read and write functions mbed_i2c_read(0x68,0x75,1,whoami); pc.printf("whoami=%d\n",whoami[0]); mbed_i2c_read(0x68,0x23,2,inbuff); pc.printf("Buffer=%d-%d\n",inbuff[0],inbuff[1]); outbuff[0]=inbuff[0]&0x01; outbuff[1]=inbuff[1]&0x02; pc.printf("updated buffer=%d-%d\n",outbuff[0],outbuff[1]); mbed_i2c_write(0x68,0x23,2,outbuff); mbed_i2c_read(0x68,0x23,2,inbuff); pc.printf("new out buffer=%d-%d(if zero, write function still needs to be fixed)\n",inbuff[0],inbuff[1]); #endif while(1){ if(pc.readable()){ pc.scanf("%s",®isteradress); regadd=(registeradress[0]-48)*100+(registeradress[1]-48)*10+(registeradress[2]-48); mbed_i2c_read(0x68,(unsigned)regadd,1,registerdata); pc.printf("%d is gotten from serial port, data at that register is %d\n",regadd,registerdata[0]); } /*if(imu.dmpBegin(DMP_FEATURE_6X_LP_QUAT | // Enable 6-axis quat DMP_FEATURE_GYRO_CAL, // Use gyro calibration 20)==INV_ERROR){ // Set DMP FIFO rate to 20 Hz pc.printf("imu.dmpBegin have failed\n");//dmpLoad function under it fails which is caused by memcmp(firmware+ii, cur, this_write) (it is located at row 2871 of inv_mpu.c) } else{ pc.printf("imu.dmpBegin() suceeded\n"); }*/ // Check for new data in the FIFO if (imu.fifoAvailable()){//fifo is not being available led=0; wait_ms(1); led=1; wait_ms(1); // Use dmpUpdateFifo to update the ax, gx, mx, etc. values if ( imu.dmpUpdateFifo() == INV_SUCCESS){ // computeEulerAngles can be used -- after updating the // quaternion values -- to estimate roll, pitch, and yaw imu.computeEulerAngles(); printIMUData(); } } else{ led=0; } } return 0; } void printIMUData(void) { // After calling dmpUpdateFifo() the ax, gx, mx, etc. values // are all updated. // Quaternion values are, by default, stored in Q30 long // format. calcQuat turns them into a float between -1 and 1 float q0 = imu.calcQuat(imu.qw); float q1 = imu.calcQuat(imu.qx); float q2 = imu.calcQuat(imu.qy); float q3 = imu.calcQuat(imu.qz); pc.printf("$,%.4lf,%.4lf,%.4lf,*\n", imu.yaw,imu.pitch,imu.roll); }