why aren't my 1024 bytes proccesd
Posted: Sun Feb 12, 2012 11:52 am
Hello,
i have the bellow code, it work's fine if a send 8 portion's of 128 bytes. if i alter it to 1 portion of 1024 bytes it receives them all. the report is 1024 but when i procces it the avr report -xx so what goes wrong. the code posted below is for proccesing 1024 bytes.
i have the bellow code, it work's fine if a send 8 portion's of 128 bytes. if i alter it to 1 portion of 1024 bytes it receives them all. the report is 1024 but when i procces it the avr report -xx so what goes wrong. the code posted below is for proccesing 1024 bytes.
Code: Select all
#include <inttypes.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/pgmspace.h>
#include <avr/wdt.h>
#include <avr/eeprom.h>
#include <util/delay.h>
// Graphical drivers
#include "ks0108.h"
#include "arial8.h"
// use avrusb library
#include "usbdrv.h"
#include "oddebug.h"
#include "request.h"
#include "bitmap.h"
#define VERSION_MAJOR 1
#define VERSION_MINOR 9
#define VERSION_STR "1.09"
/* ------------------------------------------------------------------------- */
static uchar currentPosition, bytesRemaining;
static uchar image[1024];
uint8_t x,y,color;
/* ------------------------------------------------------------------------- */
uchar usbFunctionSetup(uchar data[8]) {
usbRequest_t *rq = (void *)data;
static uchar replyBuf[4];
// usbMsgPtr = replyBuf;
currentPosition = 0;
bytesRemaining = rq->wLength.word; // store the amount of data requested
if(bytesRemaining > sizeof(image)) // limit to buffer size
bytesRemaining = sizeof(image);
if(rq->bRequest == cmd_LCD_WritePixel){ /* ECHO */
x = rq->wValue.bytes[0];
y = rq->wValue.bytes[1];
color = rq->wIndex.bytes[0];
ks0108SetDot(x,y,color);
}
if(rq->bRequest == cmd_USB_connected){ /* repaint screen on connect */
ks0108ClearScreen();
ks0108SelectFont(Arial9, ks0108ReadFontData, BLACK);
ks0108GotoXY(8,10);
// Print some text
ks0108Puts_P(PSTR("GLCD-USB interface by AJG"));
ks0108GotoXY(25,20);
// Print some text
ks0108Puts_P(PSTR("Connected to host PC"));
ks0108DrawRoundRect(0, 0, 126, 63, 8, BLACK);
}
if(rq->bRequest == cmd_USB_sendglcd1){ /* repaint screen on connect */
x = 0;
y = rq->wValue.bytes[1];
return USB_NO_MSG;
}
return 0; // reply len
}
uchar usbFunctionWrite(uchar *data, uchar len)
{
uchar i;
uint16_t ii, jj, by;
if(len > bytesRemaining) // if this is the last incomplete chunk
len = bytesRemaining; // limit to the amount we can store
bytesRemaining -= len;
for(i = 0; i < len; i++){
// ks0108GotoXY(x, y);
// ks0108WriteData(data[i]);
// x++;
image[currentPosition++] = data[i];
}
/* after all data is proccesd execute below */
if (bytesRemaining ==0){
for(z=0; z<64; z+=8)
for(j=0; j<128; j++)
{
by=image[(z*16)+j];
ks0108GotoXY(j, z);
ks0108WriteData(by);
}
}
return bytesRemaining == 0; // return 1 if we have all data
}