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proble with altera uart ttyS0

Altera_Forum
Honored Contributor II
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hi all 

i have problem with altera uart0 

when i send char it's ok but µclunix stop run , my function  

int uart_altera_test() 

char* msg = "c"; 

int fp; 

char prompt = 0; 

fp = open ("/dev/ttyS0", O_RDWR | O_NONBLOCK); //Open file for reading and writing 

 

if (fp < 0) 

printf( "error open %.\n", fp); 

else 

{  

 

if( write(fp, msg ,sizeof(char)) < 0) 

printf("error write UART file.\n"); 

fclose (fp); 

printf("Closing the UART file.\n"); 

return 0 

}
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