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Altera_Forum
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8 years ago

Send data from FPGA to computer using a USB to TTL

Hi, i'm a newbie using FPGAs and i'm trying to send data from FPGA to computer using a USB to TTL adapter but so far the only thing i can send is just one bit, i can see it on putty, is just trash be...
Altera_Forum's avatar
Altera_Forum
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8 years ago

Serial interface sends always 8 bits (or 7 bits in special configurations) at once. Putty can't display a single bit. There might be a problem of non-matching baud rates, or non-printable ASCII codes send to the terminal program.

Arduino TX is FPGA pin Arduino_IO6, if I understand right. How are you driving it? You would write an UART module generating start bit, 8 data bits and stop bit with correct baud rate.