Serial sending ascii instead of HEX?

Projects Programming
1

Ok, so I am writing this code where I need to send this message:

Serial.write(0x7E);
Serial.write(0xFF);
Serial.write(0x06);
Serial.write(0x03);
Serial.write(0x00);
Serial.write(0x00);
Serial.write(0x01);
Serial.write(0xEF);

But isn't there an easier way of doing this? Like shouldn't I be able to do this in ascii? or no?

2

Did you forget ", HEX" ?

(ASCII is a seven bit code, so "0xFF" isn't ASCII)

3 
static const uint8_t MessageInABottle[] = { 0x7E, 0xFF, 0x06, 0x03, 0x00, 0x00, 0x01, 0xEF };
Serial.write( MessageInABottle, sizeof(MessageInABottle) );

Maybe less typing. Probably uses less Flash.

The benefit to your method is that it uses no SRAM.

SlinkyMation:
Like shouldn't I be able to do this in ascii? or no?

Do any of those values correspond to ASCII characters?

4

Would doing something like this be practical?

static const uint8_t MessageInABottle[] = { 0x7E, 0xFF, 0x06, 0x03, 0x00, 0x00, 0x01, 0xEF };
#define Throw_Bottle Serial.write( MessageInABottle, sizeof(MessageInABottle) );
Throw_Bottle
5

Practical?
Yes.
Sensible?
No.

6

TL;DR: See post above.

SlinkyMation:
Would doing something like this be practical?

Only if you have a specific reason to use a macro instead of a function. I can address your situation without a response: No, that is not practical. Use a function...

static void Throw_Bottle( void )
{
  static const uint8_t MessageInABottle[] = { 0x7E, 0xFF, 0x06, 0x03, 0x00, 0x00, 0x01, 0xEF };
  Serial.write( MessageInABottle, sizeof(MessageInABottle) );
}
7

Thanks guys!

8

If you want the serial to send ASCII, use Serial.print / Serial.println instead of Serial.write ...