FTDI Community
General Category => General Discussion => Topic started by: vikash23 on October 15, 2020, 08:33:40 pm
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Hi,
Please see the attached image.
I have three devices with only UART in all three devices
I need to communicate with all three devices at the same time or one after the other using one USB
I have see USB to UART using FTDI converter . But that is for one to one.
Here one USB to 3 UART I needs to be connect. Is it possible using FT4232H?
I saw one FTDI device FT4232H and the datasheet says "Single chip USB to four channels UART (RS232, RS422 or RS485) or Bit-Bang interfaces. "
can I use this device for my application ?
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Hello,
Yes the FT4232H can be utilised to provide up to 4 UART connections from a single USB device, each UART connection would present its own COM port to the host machine.
Best Regards,
FTDI Community
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Can I also please know if RXTX0, RXTX1 and RXTX2 devices can also communicated among themselves via FT4232H as bridge ?
I mean device 0 messages goes through FTDI IC and received by device 1. Also vice versa.
Thanks
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Hello,
Unfortunately it is not possible to bridge UART connections through the IC between devices.
Best Regards,
FTDI Community
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Hi,
Thanks for your response.
If the UART bridge is not possible, can I please know the best method to communicate between device 0 and device 1 ?
Any PC self developed application can receive the data from both devices via FTDI and do a bypass on the PC application ?
Regards,
Vikash
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Hello,
I would suggest the simplest solution is to connect the UART channels of device 0 and device 1 together if you just require a simple UART bridge.
Assuming however, that you also require a USB connection to these devices, utilising the FT4232H you would be required to write a software application that echos data back and forth between the desired COM ports/interfaces on the FT4232H. You could achieve this using standard COM port programming techniques, or via our D2XX DLL.
Best Regards,
FTDI Community