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Altera_Forum
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15 years ago

dev/uart_rs232

Hello! I try to send data to the rs232 of the Nios Embedded Evaluation kit. I used the SOPC Builder and used the SOPC files of the Nios II System Architect Design Tutorial. There I put in ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

In C 'a' is a character, while "a" is a string. fopen is expecting a pointer to a buffer, so you should use strings. Try with write("a", strlen("a"), 1, fp);

If it still doesn't work, I'd suggest to put a signaltap probe on your tx and rx signals. That way you would know if the problem comes from inside the FPGA or outside.