Commandline program for reading a Hillcrest Labs Bosch BNO080 IMU sensor over I2C under Linux
cc i2c_bno080.o getbno080.o -o getbno080
/usr/bin/ld: i2c_bno080.o: in function qToFloat': /root/pi-bno080-master/i2c_bno080.c:979: undefined reference to pow'
/usr/bin/ld: /root/pi-bno080-master/i2c_bno080.c:979: undefined reference to pow' /usr/bin/ld: /root/pi-bno080-master/i2c_bno080.c:979: undefined reference to pow'
/usr/bin/ld: /root/pi-bno080-master/i2c_bno080.c:979: undefined reference to pow' /usr/bin/ld: /root/pi-bno080-master/i2c_bno080.c:979: undefined reference to pow'
collect2: error: ld returned 1 exit status
make: *** [Makefile:14: getbno080] Error 1
Hi I was wondering where you saw the 700 ms delay when you do softRestart ?
I am testing this code with Chinese board called GY-BNO080 that is popular on Ebay and Aliexpress.
I see device is detected:
root@raspberrypi:~# i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- 4b -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
But device index is 1, not 0 so I get this error:
./getbno080 -a 0x4b -t acc
Error failed to open I2C bus [/dev/i2c-0].
Then I change this line in header file and recompiled: (This is RPI4 with 2GB)
#define I2CBUS "/dev/i2c-1"
Then I don't get any data:
./getbno080 -a 0x4b -t acc
Debug: CMD reportID [F1] REPseq [00] CMD [84] CMDseq [00] RESPseq [00] R0 [00]
Debug: CMD reportID [F1] REPseq [00] CMD [84] CMDseq [00] RESPseq [00] R0 [00]
Error: Cannot read accelerometer data.
This is probably undocumented command to get euler angles:
./getbno080 -a 0x4b -t eul
Debug: CMD reportID [F1] REPseq [00] CMD [84] CMDseq [00] RESPseq [00] R0 [00]
If any ideas to try, let me know.
Hi can anyone please teach me how to read i2c bn o080 sensor pleasee
The source files seem to be missing. Are you going to make them available?
Regards,
Simon
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