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Altera_Forum
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20 years ago

how to set char by uart use fopen and fclose ?

why it give me this message "undefined reference to `fopen'","undefined reference to `fclose'" , when i use fopen and fclose to uart if i miss any incluse file ? # include...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

#include "system.h"# include "io.h"# include "stdio.h"# include "altera_avalon_lcd_16207_regs.h"# include "altera_avalon_timer.h"# include "altera_avalon_timer_regs.h"# include "sys/alt_irq.h"# include "altera_avalon_uart_regs.h"# include "altera_avalon_uart.h"# include "alt_types.h"# include "stdlib.h"# include "unistd.h"# include "fcntl.h"# include "sys/alt_alarm.h"# include "string.h"# include "sys/ioctl.h"# include "fcntl.h"# include "string.h"# include "stddef.h"# include "priv/alt_file.h"
int main()
{
  FILE *fp;
  fp=fopen("/dev/UART_PC_NAME","r+");
//UART_PC_NAME is my uart name
  if(fp)
    {
      fprintf(fp,"close the uart.\n");
      fclose(fp);
      }
}