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When I use CYGPKG_IO_SERIAL_GENERIC_16X5X as driver of LPC2XXX's embedded DUART module. I find the module doesn't generate ISR_Tx interrupt after enable IER_XMT, so the transmit operation never start. So I try transmitting in pc_serial_start_xmit() to trigger the ISR_Tx intertupt, then it works well. Should it be patched? Just FYI.:)
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ser_16x5x.c
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