FTDI FT232R force flushing FIFO Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern) Data science time! April 2019 and salary with experience The Ask Question Wizard is Live!My board design with a FTDI chip is a lot slower than a generic off the shelf RS232 to USB cable. Why is that the case?handle a non-persistent eof in a tcl readhandler when non-blockingReceiving data using USB Host and FTDI deviceftdi (vcp or d2xx) forward (from PC to ftdi device) latencyD2XX receive unexpected data from UART mode FTDI device on Linux Ubuntu 14.04 64bitshow to detect XMIT FIFO is full on a UART 16550 or higherIs there a command line utility to program an nxp chipset using FTDI on Linux?How to (almost) prevent FT232R (uart) receive data loss?FTDI driver (Windows) FT_Write() issue with large (1KB) chunk - (version 2.12.16.0)Decoding a continuous stream of data in a thread without blocking the receiverMy board design with a FTDI chip is a lot slower than a generic off the shelf RS232 to USB cable. Why is that the case?
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FTDI FT232R force flushing FIFO
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)
Data science time! April 2019 and salary with experience
The Ask Question Wizard is Live!My board design with a FTDI chip is a lot slower than a generic off the shelf RS232 to USB cable. Why is that the case?handle a non-persistent eof in a tcl readhandler when non-blockingReceiving data using USB Host and FTDI deviceftdi (vcp or d2xx) forward (from PC to ftdi device) latencyD2XX receive unexpected data from UART mode FTDI device on Linux Ubuntu 14.04 64bitshow to detect XMIT FIFO is full on a UART 16550 or higherIs there a command line utility to program an nxp chipset using FTDI on Linux?How to (almost) prevent FT232R (uart) receive data loss?FTDI driver (Windows) FT_Write() issue with large (1KB) chunk - (version 2.12.16.0)Decoding a continuous stream of data in a thread without blocking the receiverMy board design with a FTDI chip is a lot slower than a generic off the shelf RS232 to USB cable. Why is that the case?
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Is there a way to readout continuously or force-flush the RX fifo of FTDI FT232R. I want to timestamp the received bytes and therefore want to avoid that the received bytes are being sent in chunks. I want to force the chip to sent them via USB as they arrive.
linux uart ftdi
asked Mar 19 at 16:46
Konrad EiseleKonrad Eisele
1,058816
add a comment |
Is there a way to readout continuously or force-flush the RX fifo of FTDI FT232R. I want to timestamp the received bytes and therefore want to avoid that the received bytes are being sent in chunks. I want to force the chip to sent them via USB as they arrive.
linux uart ftdi
asked Mar 19 at 16:46
Konrad EiseleKonrad Eisele
1,058816
add a comment |
Is there a way to readout continuously or force-flush the RX fifo of FTDI FT232R. I want to timestamp the received bytes and therefore want to avoid that the received bytes are being sent in chunks. I want to force the chip to sent them via USB as they arrive.
linux uart ftdi
asked Mar 19 at 16:46
Konrad EiseleKonrad Eisele
1,058816
Is there a way to readout continuously or force-flush the RX fifo of FTDI FT232R. I want to timestamp the received bytes and therefore want to avoid that the received bytes are being sent in chunks. I want to force the chip to sent them via USB as they arrive.
linux uart ftdi
linux uart ftdi
asked Mar 19 at 16:46
Konrad EiseleKonrad Eisele
1,058816
asked Mar 19 at 16:46
Konrad EiseleKonrad Eisele
1,058816
asked Mar 19 at 16:46
Konrad EiseleKonrad Eisele
1,058816
asked Mar 19 at 16:46
Konrad EiseleKonrad Eisele
1,058816
asked Mar 19 at 16:46
Konrad EiseleKonrad Eisele
1,058816
1,058816
add a comment |
add a comment |
1 Answer
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FT232R
AFAIK, it is impossible for FT232R.
One can force to send data before the internal buffers is filled up but not in "number of bytes" basis. One can just lower data transmission latency timer from default 16 ms down to 1 ms.
See also my answer for "My board design with a FTDI chip is a lot slower than…"
FT2232D
FT2232D has SI/WU pin (send immediate/wake up), see DS, page 31. (FT2232H also has the SIWU pins but they don't work in RS232 mode).
During normal operation (PWREN# = 0), if this pin is strobed low any data in the device TX buffer will be sent out over USB on the next Bulk-IN request from the drivers regardless of the pending packet size.
Unfortunately, I never used this pin so I can't provide more details.
answered Mar 22 at 9:38
ReAlReAl
8001317
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
FT232R
AFAIK, it is impossible for FT232R.
One can force to send data before the internal buffers is filled up but not in "number of bytes" basis. One can just lower data transmission latency timer from default 16 ms down to 1 ms.
See also my answer for "My board design with a FTDI chip is a lot slower than…"
FT2232D
FT2232D has SI/WU pin (send immediate/wake up), see DS, page 31. (FT2232H also has the SIWU pins but they don't work in RS232 mode).
During normal operation (PWREN# = 0), if this pin is strobed low any data in the device TX buffer will be sent out over USB on the next Bulk-IN request from the drivers regardless of the pending packet size.
Unfortunately, I never used this pin so I can't provide more details.
answered Mar 22 at 9:38
ReAlReAl
8001317
add a comment |
FT232R
AFAIK, it is impossible for FT232R.
One can force to send data before the internal buffers is filled up but not in "number of bytes" basis. One can just lower data transmission latency timer from default 16 ms down to 1 ms.
See also my answer for "My board design with a FTDI chip is a lot slower than…"
FT2232D
FT2232D has SI/WU pin (send immediate/wake up), see DS, page 31. (FT2232H also has the SIWU pins but they don't work in RS232 mode).
During normal operation (PWREN# = 0), if this pin is strobed low any data in the device TX buffer will be sent out over USB on the next Bulk-IN request from the drivers regardless of the pending packet size.
Unfortunately, I never used this pin so I can't provide more details.
answered Mar 22 at 9:38
ReAlReAl
8001317
add a comment |
FT232R
AFAIK, it is impossible for FT232R.
One can force to send data before the internal buffers is filled up but not in "number of bytes" basis. One can just lower data transmission latency timer from default 16 ms down to 1 ms.
See also my answer for "My board design with a FTDI chip is a lot slower than…"
FT2232D
FT2232D has SI/WU pin (send immediate/wake up), see DS, page 31. (FT2232H also has the SIWU pins but they don't work in RS232 mode).
During normal operation (PWREN# = 0), if this pin is strobed low any data in the device TX buffer will be sent out over USB on the next Bulk-IN request from the drivers regardless of the pending packet size.
Unfortunately, I never used this pin so I can't provide more details.
answered Mar 22 at 9:38
ReAlReAl
8001317
FT232R
AFAIK, it is impossible for FT232R.
One can force to send data before the internal buffers is filled up but not in "number of bytes" basis. One can just lower data transmission latency timer from default 16 ms down to 1 ms.
See also my answer for "My board design with a FTDI chip is a lot slower than…"
FT2232D
FT2232D has SI/WU pin (send immediate/wake up), see DS, page 31. (FT2232H also has the SIWU pins but they don't work in RS232 mode).
During normal operation (PWREN# = 0), if this pin is strobed low any data in the device TX buffer will be sent out over USB on the next Bulk-IN request from the drivers regardless of the pending packet size.
Unfortunately, I never used this pin so I can't provide more details.
answered Mar 22 at 9:38
ReAlReAl
8001317
edited Mar 22 at 9:55
answered Mar 22 at 9:38
ReAlReAl
8001317
answered Mar 22 at 9:38
ReAlReAl
8001317
answered Mar 22 at 9:38
ReAlReAl
8001317
8001317
add a comment |
add a comment |
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