why is my serial buffer just 40bytes?

Forum 2005-2010 (read only) Software Syntax & Programs
1

Hello,
I have a little problem with Serial.read(). I try to send a array from processing to my arduino board. The original array is byte[26][8]. All works fine if y just send array[5][8] => 40bytes. If i try to send array[6][8] =>48bytes, the Arduino does not manage the data's. This confuses mi because the Serialbuffer should have a size of 128 bytes. Any ideas what's going on in my Arduino? My baud rate is 115200, but there is no difference if I go to 9600.
Thanks for all replies.

2

I still look for a solution for this Problem.
Does nobody know something about?

3

hmm, I just tried to send 120 bytes in processing and receive them in the arduino

I use this code in processing to send:
for(i =0; i < 15; i++){
for( j=0; j < 8; j++){
myPort.write(data*[j]); *

  • }*
  • }[/font]*
    and this arduino code to test receive
    byte data[25][8];
    void setup(){
  • Serial.begin(9600);*
    }
    void loop()
    *{ *
  • static int avail;*
  • int i = Serial.available();*
  • if( i != avail) {*
  • avail = i;*
  • lcd.setCursor(0,0);*
  • lcd.print(i,DEC); *
  • delay(1000);*
  • } *
  • if(i > 100)*
  • for( int i=0; i < 101; i++){*
  • int c = Serial.read();*
  • if( i == 100)*
  • lcd.print("c=");*
  • lcd.print(c,DEC);*
  • }*
    }
    tested ok for me (using Arduino 0012)
    check: #define RX_BUFFER_SIZE 128 in wiring_serial.c