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Altera_Forum
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15 years ago

JTAG UART & nios2-terminal comm problems

All-- I've got a JTAG UART issue I'm running into and I'm hoping someone out there might be able to help out. For whatever reason, nios2-terminal loses connection on an intermittent basis. It...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

My first guess would be some bit errors on the JTAG signals too. Something occurring so rarely that you don't see it when downloading but have it after a while on the UART.

You could try to check the signals with a scope. Pay attention especially to the JTAG clock, as over/undershoots could be seen as an additional clock edge by the hardware, and that could induce errors on the communication.