Problem pollSerial

[fanatycoland]

Hello ,i have a problem with poll Serial , when i receive information on serial communication the word or the sentence is cut and the word is not clear , an example it’s , i sent test and i received te or tes and sometimes all letter.I need help !

Thx !

[Michael]

What speed are you running pollserial at? I would keep it at a low speed like 9600.

[fanatycoland]

the speed is 9600

[Michael]

maybe try a higher speed, then.

[fanatycoland]

some problem i try speed at 19200 or 115200 and some problem master
void setup()
{
Serial.begin(19200);
}

void loop()
{
Serial.println(“test”);
delay(100);
}

and slave

#include
#include
#include

#define W 128
#define H 98

TVout tv;
pollserial pserial;

void setup() {
tv.begin(PAL, W, H);
tv.set_hbi_hook(pserial.begin(19200));
initOverlay();
tv.select_font(font4x6);
tv.fill(0);
}

// Initialize ATMega registers for video overlay capability.
// Must be called after tv.begin().
void initOverlay() {
TCCR1A = 0;
// Enable timer1. ICES0 is set to 0 for falling edge detection on input capture pin.
TCCR1B = _BV(CS10);

// Enable input capture interrupt
TIMSK1 |= _BV(ICIE1);

// Enable external interrupt INT0 on pin 2 with falling edge.
EIMSK = _BV(INT0);
EICRA = _BV(ISC11);
}

// Required to reset the scan line when the vertical sync occurs
ISR(INT0_vect) {
display.scanLine = 0;
}

void loop()
{
if(pserial.available())
{
char c = pserial.read();
pserial.print(c);
}
}

[Michael]

I would not initialize the serial communication at the beginning of every horizontal scan line. Instead of this:

tv.set_hbi_hook(pserial.begin(19200));

try this

pserial.begin(19200);

[Michael]

I’ve always used speed of 57600. try that.

[fanatycoland]

i have another problem now don’t receive the string

[fanatycoland]

it work on speed 57600 but sometimes cut the string..

[Michael]

i don’t know what to tell you. I’ve used it successfully. Since I didn’t write these libraries, I can’t support them very well, ya know? I support my hardware. Try a higher speed yet.

[fanatycoland]

I want to ask you if you can give to me a example .please

[Michael]

https://nootropicdesign.com/projectlab/2011/07/18/visualizing-tv-dialog/

[Author]

Posts