Not sure how to compile successfully for Teensy 4.0.

[AdamMarciniak]

I download the github repo and extract it to my Arduino folder in My Documents. Then, I try and run MUP6050IMU.ino file and it says "MadgwickQuaternionUpdate' was not declared in this scope".

If I try and run MPU6050BasicExample.ino it errors out with this:

Linking everything together...
"C:\\Program Files (x86)\\Arduino\\hardware\\teensy/../tools/arm/bin/arm-none-eabi-gcc" -O2 -Wl,--gc-sections,--relax "-TC:\\Program Files (x86)\\Arduino\\hardware\\teensy\\avr\\cores\\teensy4/imxrt1062.ld" -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -o "C:\\Users\\Adam\\AppData\\Local\\Temp\\arduino_build_437672/MPU6050BasicExample.ino.elf" "C:\\Users\\Adam\\AppData\\Local\\Temp\\arduino_build_437672\\sketch\\MPU6050.cpp.o" "C:\\Users\\Adam\\AppData\\Local\\Temp\\arduino_build_437672\\sketch\\MPU6050BasicExample.ino.cpp.o" "C:\\Users\\Adam\\AppData\\Local\\Temp\\arduino_build_437672\\libraries\\Wire\\Wire.cpp.o" "C:\\Users\\Adam\\AppData\\Local\\Temp\\arduino_build_437672\\libraries\\Wire\\WireIMXRT.cpp.o" "C:\\Users\\Adam\\AppData\\Local\\Temp\\arduino_build_437672\\libraries\\Wire\\WireKinetis.cpp.o" "C:\\Users\\Adam\\AppData\\Local\\Temp\\arduino_build_437672\\libraries\\Wire\\utility\\twi.c.o" "C:\\Users\\Adam\\AppData\\Local\\Temp\\arduino_build_437672/core\\core.a" "-LC:\\Users\\Adam\\AppData\\Local\\Temp\\arduino_build_437672" -larm_cortexM7lfsp_math -lm -lstdc++
C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch\MPU6050BasicExample.ino.cpp.o:(.bss.Ascale+0x0): multiple definition of `Ascale'
C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch\MPU6050.cpp.o:(.bss.Ascale+0x0): first defined here
c:/program files (x86)/arduino/hardware/tools/arm/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/bin/ld.exe: Disabling relaxation: it will not work with multiple definitions
C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch\MPU6050BasicExample.ino.cpp.o: In function `getGres()':
C:\Users\Adam\Documents\Arduino\MPU6050-master\MPU6050BasicExample/MPU6050BasicExample.ino:237: multiple definition of `Gscale'
C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch\MPU6050.cpp.o:C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch/MPU6050.cpp:169: first defined here
collect2.exe: error: ld returned 1 exit status
Using library Wire at version 1.0 in folder: C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\Wire 
Error compiling for board Teensy 4.0.

I've got .h and .ccp files in the same folder as the example file.

[kriswiner]

Not sure what the problem could be, the MadgwickQuaternionUpdate function is in the MPU6050IMU.ino file...

On Sun, Jul 12, 2020 at 9:33 PM Adam Marciniak [email protected] wrote:

I download the github repo and extract it to my Arduino folder in My Documents. Then, I try and run MUP6050IMU.ino file and it says "MadgwickQuaternionUpdate' was not declared in this scope".

If I try and run MPU6050BasicExample.ino it errors out with this:

Linking everything together... "C:\Program Files (x86)\Arduino\hardware\teensy/../tools/arm/bin/arm-none-eabi-gcc" -O2 -Wl,--gc-sections,--relax "-TC:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy4/imxrt1062.ld" -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -o "C:\Users\Adam\AppData\Local\Temp\arduino_build_437672/MPU6050BasicExample.ino.elf" "C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch\MPU6050.cpp.o" "C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch\MPU6050BasicExample.ino.cpp.o" "C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\libraries\Wire\Wire.cpp.o" "C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\libraries\Wire\WireIMXRT.cpp.o" "C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\libraries\Wire\WireKinetis.cpp.o" "C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\libraries\Wire\utility\twi.c.o" "C:\Users\Adam\AppData\Local\Temp\arduino_build_437672/core\core.a" "-LC:\Users\Adam\AppData\Local\Temp\arduino_build_437672" -larm_cortexM7lfsp_math -lm -lstdc++ C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch\MPU6050BasicExample.ino.cpp.o:(.bss.Ascale+0x0): multiple definition of Ascale' C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch\MPU6050.cpp.o:(.bss.Ascale+0x0): first defined here c:/program files (x86)/arduino/hardware/tools/arm/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/bin/ld.exe: Disabling relaxation: it will not work with multiple definitions C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch\MPU6050BasicExample.ino.cpp.o: In function getGres()': C:\Users\Adam\Documents\Arduino\MPU6050-master\MPU6050BasicExample/MPU6050BasicExample.ino:237: multiple definition of `Gscale' C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch\MPU6050.cpp.o:C:\Users\Adam\AppData\Local\Temp\arduino_build_437672\sketch/MPU6050.cpp:169: first defined here collect2.exe: error: ld returned 1 exit status Using library Wire at version 1.0 in folder: C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\Wire Error compiling for board Teensy 4.0.

I've got .h and .ccp files in the same folder as the example file.

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