i want to read rfid tag to rs232, and i don't know wich are tx rx on board, and if i can put camera and this reader + 1 compas to i2c.
At this moment i don't know sure what i must buy, but i want to know if this it's posible, and same documention about blackfin and boards to take myself conclusion

Hy, i want ask If anyone has already implemented this function, please explain me how i must write this function in firmware.  
 Thank you

Yes - that's correct.  Note that signal1() checks if any characters are waiting.

Hi, do you can say if the uart2 it's implemented in firmware functions? i saw that is in picoC,but i need this in a direct conection.
I need to control and pin connection UART CTS. I found in a document Blackf_HRM.pdf (pag.1044) as possible by checking a registry HWAIT. So it's possible to control or not?

it's ok but do you can update the last firmware with an function like uart1_write(... / parameter)
i will apreciate that. I will try tomorow to add a function to the firmware. (at me is 22.11 pm)

I saw it, but i ask if you can add in srv.c an enter int the switch main.c loop like for "V"(version). I wiil try today to compile the firmware and add this futures.
 
to add a function to firmware i must declare it in srv.h than put in srv.c and in main.c i will make an gate for this function?
If i want to use one GPIO for TTL/..  in/out who i must declare it in my fct or it's allredy declare and who i can use it.
Thanks

Hello,
 I try to makean UART connection with my RFID reader on pin 5,6, 28 (CTS), but when i run this code in picoC i get an error at init^(9600);
 
 
maybe i have an error and i can't see it code:
 
init_uart1(9600);
 iodir(0x3D)
int CTS=1;
int p=0;
 
void uart()
{
  CTS=(ioread()&0x1);
  if(CTS==1)
   {
     p=input1();
      printf("%d:",p)
    }
  if(CTS==0)
  {
    output1('z');
    delay(10);
  }
}
 
void main()
{
     int i=0;
     while(i<1000)
     {
     uart();
      i++;
     }
}
 
void main();

What version of firmware are you running ?  init_uart1() should be defined.  
 
Also, get rid of the "void" declaration at the very end where you execute main().