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Altera_Forum
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10 years ago

Cyclone V HPS UART, can't rx data

I can send RS232 data via HPS UART1 but unable to read data. The scope shows RS232 data on RX pin but test code can’t read any data from /dev/ttyS1 and nothing when I ‘cat /dev/ttyS1’ I can thi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Preloader and U-boot updates are important to set pin settings of Cyclone V. Don't expect it to work without it