FTDI FT232R receiving garbage on read buffer

felHR85 / UsbSerial

Usb serial controller for Android

MIT License

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FTDI FT232R receiving garbage on read buffer #316

Open D4no0 opened 4 years ago

D4no0 commented 4 years ago

When connecting FT232R (tried cloned analogs and original ones), it receives garbage on read buffer:

2020-06-30 13:32:42.077 30128-30177/? I/UsbSerialDebugger: Raw data from Read buffer: 0x01 0x60 
2020-06-30 13:32:42.077 30128-30177/? I/UsbSerialDebugger: Number of bytes obtained from Read buffer: 2
2020-06-30 13:32:42.094 30128-30177/? I/UsbSerialDebugger: Data obtained from Read buffer: `

This loops continuously, the async callback never gets called.

Write buffer seems to work fine.

felHR85 commented 4 years ago

What version are you currently using?

D4no0 commented 4 years ago

The latest version, 6.1.0

D4no0 commented 4 years ago

I tried also to use the sync version. It just times out without receiving anything no matter how long the timeout is.

JoshinJoy commented 2 years ago

I have the same problem. continuously getting 0x01 0x60 this is what is showing in serial terminal of windows. ` it is showing in every baudrate

tr1p1ea commented 11 months ago

I believe this is a feature of FTDI devices in that it sends out a 'modem status' (2 bytes) with every read access or every 40ms in the absence of data: https://hackage.haskell.org/package/ftdi-0.3.0.2/docs/System-FTDI.html#g:10