I get the first 14 or 15 characters of every line.

You are overrunning the buffer in your UART. You need to enable some form of handshaking. rts/cts, XON/XOFF or DTR/DSR.

Check the specs for the device to find out which it supports.

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In reply to Re: Missing data on serial read by BrowserUk
in thread Missing data on serial read by ccherri

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