>>>>> "Uwe" == Uwe Bonnes <[email protected]> writes:
>>>>> "David" == David Kuehling <[email protected]> writes: >>>>> "Uwe" == Uwe Bonnes <[email protected]> writes: >>>>> "David" == David Kuehling <[email protected]> writes: David> hi, just tried to make the ftdipp library from git head work, but David> my test program already fails in Context::open(vendor,product). David> The other libftdi programs supplied in the example/ directory David> seem to work. David> open(vendor,product) calls ftdi_usb_open(), which succeeds, then David> calls get_strings_and_reopen(), which calls get_strings(), which David> calls ftdi_usb_get_strings(), which fails, as it passes in d->dev David> which hasn't been set yet. David> Maybe the correct fix is to set d->dev to d->ftdi->dev after David> ftdi_usb_open()? >>> Perhaps create a small example program in the example directory that >>> shows the error. Then create a patch to fix that error and send the >>> patches... David> I'm just using libftdi for the first time, and wasn't prepared to David> debug that problem in-depth. That's why my bug report is a David> little shallow and doesn't provide a working patch. > I requested more the program or better a stripped down version of that > program. That way, other may reproduce the bug and look for a fix. Try this program: --8<-- #include <stdio.h> #include <assert.h> #include <ftdi.hpp> int main() { Ftdi::Context ctx; int result; const unsigned vendor = 0x0403; const unsigned device = 0x6010; result = ctx.set_interface(INTERFACE_A); assert(result == 0); result = ctx.open(vendor, device); if (result) { fprintf(stderr, "open(): %s\n", ctx.error_string()); return 1; } return 0; } --8<-- compiles via (when saved as 'ftdibug.cpp'): make CXXFLAGS='-I/usr/local/include/libftdi -I/usr/include/libusb-1.0 -lftdipp -lftdi -lusb-1.0' ftdibug This outputs: open(): all fine i.e. open() returns nonzero, but there's no corresponding error message. cheers, David -- GnuPG public key: http://dvdkhlng.users.sourceforge.net/dk.gpg Fingerprint: B17A DC95 D293 657B 4205 D016 7DEF 5323 C174 7D40
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