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Messages - cioma

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1
Discussion - Software / Re: FT_Prog on Windows 10
« on: April 23, 2019, 09:18:27 AM »
My 5p:

The latest FT_Prog messes up LG 27MD5KA-B Thunderbolt display backlight settings on Windows 10 when it scans for FTDI devices: screen backlight blinks every 0.5s during scan and ends up being very dim (one can hardly see anything on it). The workaround is to start the scan again and unplug the display from PC during it. After replugging it might end up with the original backlight settings.

2
Discussion - Software / Re: Understanding FT232H buffer behavior
« on: April 23, 2019, 09:05:03 AM »
AFAIK the USB bulk transfers (512 bytes packets in High Speed mode) are used for actual data exchange. Any amount of data may be sent to OUT endpoint as USB subsystem on the host computer handles this automatically: device sends NAK on the OUT endpoint when its buffer gets full and the host computer reschedules the data delivery. Therefore there is no need to split write data in 512 byte chunks. And the data is buffered on the host computer. Same for the IN endpoint: host computer buffers data until either its size reaches the limit you've requested (e.g. 64 kB) or a timeout occurs.

3
Discussion - Hardware / Re: SPI mode clock duty cycle
« on: January 09, 2018, 11:54:34 AM »
Do you by any chance have 3-phase clocking enabled?

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