Hello,
I'm still working with your USB3FPGA boards.
I'm writing because I need some suggestions to solve a problem with the bulk transfer The error happens because we changed the panel pc used to communicate with the board. The new panel pc has the usb 3.0 interface only.
Up to now we worked with the boards at full speed (usb 1.1) due to an optical interface. With the new panel pc we had to use a usb3.0 optical interface and this means that the cards works at high speed (usb 2.0). This change of speed seems to stay at the origin of the problem.
The problem is an error during either the bulk writing and the bulk reading. The error happens only in case we have connected two boards to the system through a usb hub.
The error I see is the following: Code 80001003 Description: System error (14:Bad address): ioctl call failed.
The device named ceusb0 works always correctly but the device named ceusb1 shows this error.
If we use only a single board connected to the panel pc, the bulk transfer is perfect.
The system works on linux gentoo kernel 3.19.8
Do you have some suggestion to try to solve the issue?
best regards
Claudio
IGEA SpA
I'm still working with your USB3FPGA boards.
I'm writing because I need some suggestions to solve a problem with the bulk transfer The error happens because we changed the panel pc used to communicate with the board. The new panel pc has the usb 3.0 interface only.
Up to now we worked with the boards at full speed (usb 1.1) due to an optical interface. With the new panel pc we had to use a usb3.0 optical interface and this means that the cards works at high speed (usb 2.0). This change of speed seems to stay at the origin of the problem.
The problem is an error during either the bulk writing and the bulk reading. The error happens only in case we have connected two boards to the system through a usb hub.
The error I see is the following: Code 80001003 Description: System error (14:Bad address): ioctl call failed.
The device named ceusb0 works always correctly but the device named ceusb1 shows this error.
If we use only a single board connected to the panel pc, the bulk transfer is perfect.
The system works on linux gentoo kernel 3.19.8
Do you have some suggestion to try to solve the issue?
best regards
Claudio
IGEA SpA