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1 year, 5 months ago.
Adding SD card truncate support through the API
I'm attempting to follow a similar path to this topic: https://github.com/ARMmbed/mbed-os/issues/7010
However, I'm working in MBED 2, rather than the OS, so my process is giving me considerably more trouble.
I have added the appropriate truncate() function to FATFileHandle, and the virtual functions to FileHandle:
virtual ssize_t truncate();
virtual ssize_t truncate() = 0;
However, now it's screwing with the Stream class, which manifests as a problem with a totally unrelated library. And I can't seem to fix this issue: if I add the corresponding virtual function to the Stream class, it starts to give me a "… undefined reference to … collect2: ld returned 1 exit status" linker error. If I don't, it makes the whole library class that calls stream virtual and it fails.
Has anyone added functionality through the MBED API before who could help me navigate this?