Testing

If you would like to test the driver, which you will probably do by running fprint_demo, please set the VFS5011_DEBUGPATH environment variable to a directory where lots of debug files will be created (the directory must already exist), like this:

VFS5011_DEBUGPATH=~/fprint_rindex_finger fprint_demo

(and scan right index finger multiple times)

These debug files will provide valuable feedback that can help developing the driver. But I would like to mention that the .pgm images that will be created this way will contain images of scanned fingerprints. So, if you have access to some top security military base where fingerprints are used for authentication, don't send me these images :-)