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Altera_Forum's avatar
Altera_Forum
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18 years ago

UART problems in Cyclone board

I've implemented a variable baud UART for my project into a custom Cyclone Ep1C board. The board has a 32-bit custom processor on it and the FPGA interfaces to the processor driving its address and d...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

You say the signal timings and bit patterns match. Are your voltage levels from your board also correct for RS232 (i.e. +/- a few volts, not CMOS ot TTL levels).

Have you tried running Hyperterminal on another PC or verified that the COM port on your machine is actually working? (I've had at least one destroyed by static discharge).