9 bits or 8 bits parity=E

[Coni]

Hello

I need some help with a very basic issue. I'm trying to use the following code:

[asmallri]

[Coni]

Thanks for you answer.
But if I want to use 8 bits and even /odd parity ( in hyperterminal) it doesn't work either
Thanks

[Javiere]

I have de same problem:

I� am developing a ModBus slave device and I need work with an interfaz RS-232 at 9600 bauds, 8 data bits, 1 even parity and 1 stop bit.

I utilise the PIC18F4620 with the CCS C compiler version 3.239.

My problem consists in that I can�t detect the parity errors.

My program utilizes the next code:

#use delay(clock=20000000,RESTART_WDT)
#use rs232(baud=9600,parity=E,xmit=PIN_C6,rcv=PIN_C7,bits=8,enable=PIN_C5,restart_wdt,errors,stream=HOST)
#bit parityError=rs232_errors.0

��.

#int_RDA
void RDA_isr ()
{
if (!parityError)
{
car = fgetc (HOST);
// processCar (car);
}
else
{
fgetc (HOST); // Discard the character.
}
}

With this code the transmission is Ok but in the reception y have a lot of wrong characters that look like good viewing with the oscilloscope.

�Have you got any example that shows the use of the check of the parity error?

Thank you very much.

[PCM programmer]

The parity is calculated in software by the CCS fgetc() function.
So you have to call fgetc() first, in order to get the parity information.
Example: