Need some help converting from basic to c

Projects Programming
1

Hi -

I need some help

What I'm trying to do is talk to a serial device

I have to keep flipping the 9th bit from 0 to 1

2

You need to figure out what TXSTA.0 does and how to do that on an ATmega processor. Looks like a processor register to me.

If you don't care what it does:

unsigned int TXSTA;
TXSTA |= 0x0200;  // Set bit 9
TXSTA &= ~ 0x0200;  // Clear bit 9
3

My whole project hinges on the ability to send a 9 bit serial transmission
I really hope there is a way to do this on the arduino

void setup(){
  Serial.begin(9600);
}

void loop(){
  Serial.write(80); // send a byte with the value 80
  delay(10);
  Serial.write(81); // send a byte with the value 81
 
 }
4

9-bit mode can be set by writing into the UCSRxx register.

UCSR0A = (3 << UCSZ00);

Is right I think but look at section 19.10.4 of the data sheet to see what other bits need to be preserved

Rob