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ftdipp_mpsse: don't throw exception when iProduct is empty: display warn and use empty string

This commit is contained in:
Gwenhael Goavec-Merou 2022-05-01 17:09:53 +02:00
parent db410839af
commit 84d5c59dfe
1 changed files with 9 additions and 3 deletions
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12
src/ftdipp_mpsse.cpp
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@ -74,10 +74,16 @@ FTDIpp_MPSSE::FTDIpp_MPSSE(const mpsse_bit_config &cable, const string &dev,
ret = (libusb_error)libusb_get_string_descriptor_ascii(_ftdi->usb_dev,
usb_desc.iProduct, _iproduct, 200);
/* when FTDI device has no iProduct, libusb return an error
* but there is no distinction between
* real error and empty field
*/
if (ret < 0) {
snprintf(err, sizeof(err), "unable to get string descriptor: %d %s %s",
ret, libusb_error_name(ret), libusb_strerror(ret));
throw std::runtime_error(err);
snprintf(err, sizeof(err),
"Can't read iProduct field from FTDI: "
"considered as empty string");
printWarn(err);
memset(_iproduct,'\0', 200);
}
}