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Can this board be used with java?

Former Member

Hi,

I am currently trying to write a little program in java which would display information from the sensors on the board, but I am struggling with how i would do this in java compared to the python scripts provided which use the sensor.so file to communicate with the board.

 

Many thanks

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  • The difference between a language like java (or c#) and a lower level language like c or c++ is the fact that they have a virtual machine. This has many advantages, like making the application platform-independent. But it also means that each platform has to have the vm for it.Now, microcontrollers are not uniform and vary in power, memory, and many other features. So adopting the JVM (java's virtual machine) for them is not easy even when possible. Most of the time its just impossible - most of the uc have very low memory capacity (part of what makes them cheap) - this would make fitting any general-purpose JVM there impossible, not to mention also with the application code.I am aware of some partial-implementations of java for microcontrollers. For example "java-based" sim cards (which have a very small controller inside) are there, but they have a very limited version of java.

    The memory usage shown is virtual memory used, not real memory... JVM just allocates a bunch when it starts.

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  • The difference between a language like java (or c#) and a lower level language like c or c++ is the fact that they have a virtual machine. This has many advantages, like making the application platform-independent. But it also means that each platform has to have the vm for it.Now, microcontrollers are not uniform and vary in power, memory, and many other features. So adopting the JVM (java's virtual machine) for them is not easy even when possible. Most of the time its just impossible - most of the uc have very low memory capacity (part of what makes them cheap) - this would make fitting any general-purpose JVM there impossible, not to mention also with the application code.I am aware of some partial-implementations of java for microcontrollers. For example "java-based" sim cards (which have a very small controller inside) are there, but they have a very limited version of java.

    The memory usage shown is virtual memory used, not real memory... JVM just allocates a bunch when it starts.

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