Unable to use variables to move mBot forward

#1

I have a code designed to crawl through a maze. The issue I have is the move left and right wheels do not accept variables as input without giving me a compiler error.

I receive the following error:

Command failed: avr-toolchain\bin\avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10605 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -I"C:\ProgramData\mBlock5\IdeServicePlus\app\external\arduino\avr-library\variants\standard" -I"avr-library/cores/arduino" -I"arduino-libraries/makeblock/src" -I"arduino-libraries/makeblock/src/utility/avr" -I"avr-library/libraries/Wire/utility" -I"avr-library/libraries/Wire" -I"avr-library/libraries/SoftwareSerial" -I"arduino-libraries/arduino/WiFi/src/" -I"arduino-libraries/arduino/SD/src/" -I"arduino-libraries/arduino/Bridge/src/" -I"arduino-libraries/arduino/Temboo/src/" -I"arduino-libraries/arduino/Servo/src/" -I"arduino-libraries/arduino/Ethernet/src/" -I"arduino-libraries/arduino/TFT/src/" -I"arduino-libraries/arduino/SpacebrewYun/src/" -I"arduino-libraries/arduino/LiquidCrystal/src/" -I"arduino-libraries/arduino/GSM/src/" “C:\Users\CODENINJAS\mblock-avr\temp\build\code.cpp” -o “C:\Users\CODENINJAS\mblock-avr\temp\build\code.o” C:\Users\CODENINJAS\mblock-avr\temp\build\code.cpp: In function ‘void loop()’:
C:\Users\CODENINJAS\mblock-avr\temp\build\code.cpp:106:24: error: expected primary-expression before ‘/’ token
motor_9.run(-1 * ( / 100.0 * 255));
^
C:\Users\CODENINJAS\mblock-avr\temp\build\code.cpp:107:19: error: expected primary-expression before ‘/’ token
motor_10.run( / 100.0 * 255);
^
Failed to compile file code.cpp
arduino build failed.e code.cpp
arduino build failed.

The code I have is the following:

mBot%20Maze%20Code
mBot Maze Code.jpg815x1378 314 KB

#2

It seems that the variable cannot be detected in this block:
image
I am checking with the software team.

#3

I assume that the compiler is seeing the variables as “blank”. Which is why the

error: expected primary-expression before ‘/’ token
motor_9.run(-1 * ( / 100.0 * 255));

is appearing. I believe it should show:

motor_9.run(-1 * ( VARIABLE/ 100.0 * 255));

#4

Yes, you are right. That seems the problem in mBot. We confirmed that and will fix it in the next version.

#5

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