I implement a new version of my library using FTDI_SIO and USBSERIAL modules. I've used the open,close,read and write commands to access the port. Unfortunately, the new update rate is 25 Hz (compared to 900 Hz under Windows). As my device use bulk read/write to transfer data I really do not know how to configure the serial port to work at full speed.
Does anybody has some source C code or some tips. Thanks -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paulo Marques Sent: jeudi 30 octobre 2003 06:08 To: Ga�tan Marti Cc: [EMAIL PROTECTED] Subject: Re: [linux-usb-devel] USB bulk read very slow ! Ga�tan Marti wrote: > The current ftdi_sio module is for the FT8U100AX, 8U232AM, as well as > for the USB to parallel converter (245). > Our application is using the FT232BM and I'm not sure the FTDI_SIO > module is designed for it! The module works fine with the FT232BM chip and I talk from personal experience here :) The only thing the driver doesn't support AFAIK is the bit-bang mode of this chip, because this mode doesn't fit in a serial driver architecture. If you have a custom device with your own VID/PID, just edit the source at: /drivers/usb/serial/ftdi_sio.c and add an entry with your data to the array "id_table_FT232BM". You probably can get more speed by using this driver than you would ever using libusb. > Ga�tan Marti wrote: > > >>I'm currently porting an application from windows to linux. The >> > software > >>read a stream of data coming from a custom device. The USB chip used >> > is > >>a FTDI USB-Serial. >> > > This may seem like a silly question, but why don't you use the FTDI > serial > driver that is already in the kernel? Best regards, -- Paulo Marques Software Development Department - Restinfor, Lda. Phone: +351 252 290600, Fax: +351 252 290601 Web: www.grupopie.com "In a world without walls and fences who needs windows and gates?" ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
