static void avrdoperFillBuffer(union filedescriptor *fdp)
{
int bytesPending = reportDataSizes[1]; /* guess how much data is buffered in device */
avrdoperRxPosition = avrdoperRxLength = 0;
while(bytesPending > 0){
int len, usbErr, lenIndex = chooseDataSize(bytesPending);
unsigned char buffer[128];
len = sizeof(avrdoperRxBuffer) - avrdoperRxLength; /* bytes remaining */
if(reportDataSizes[lenIndex] + 2 > len) /* requested data would not fit into buffer */
break;
len = reportDataSizes[lenIndex] + 2;
usbErr = usbGetReport(fdp, USB_HID_REPORT_TYPE_FEATURE, lenIndex + 1,
(char *)buffer, &len);
if(usbErr != 0){
fprintf(stderr, "%s: avrdoperFillBuffer(): %s\n", progname, usbErrorText(usbErr));
exit(1);
}
if(verbose > 3)
fprintf(stderr, "Received %d bytes data chunk of total %d\n", len - 2, buffer[1]);
len -= 2; /* compensate for report ID and length byte */
bytesPending = buffer[1] - len; /* amount still buffered */
if(len > buffer[1]) /* cut away padding */
len = buffer[1];
if(avrdoperRxLength + len > sizeof(avrdoperRxBuffer)){
fprintf(stderr,
"%s: avrdoperFillBuffer(): internal error: buffer overflow\n",
progname);
exit(1);
}
memcpy(avrdoperRxBuffer + avrdoperRxLength, buffer + 2, len);
avrdoperRxLength += len;
}
}
static int avrdoper_send(union filedescriptor *fdp, unsigned char *buf, size_t buflen)
{
if(verbose > 3)
dumpBlock("Send", buf, buflen);
while(buflen > 0){
unsigned char buffer[256];
int rval, lenIndex = chooseDataSize(buflen);
int thisLen = buflen > reportDataSizes[lenIndex] ?
reportDataSizes[lenIndex] : buflen;
buffer[0] = lenIndex + 1; /* report ID */
buffer[1] = thisLen;
memcpy(buffer + 2, buf, thisLen);
if(verbose > 3)
fprintf(stderr, "Sending %d bytes data chunk\n", thisLen);
rval = usbSetReport(fdp, USB_HID_REPORT_TYPE_FEATURE, (char *)buffer,
reportDataSizes[lenIndex] + 2);
if(rval != 0){
fprintf(stderr, "%s: avrdoper_send(): %s\n", progname, usbErrorText(rval));
exit(1);
}
buflen -= thisLen;
buf += thisLen;
}
return 0;
}
static void avrdoper_open(char *port, long baud, union filedescriptor *fdp)
{
int rval;
char *vname = "obdev.at";
char *devname = "AVR-Doper";
rval = usbOpenDevice(fdp, USB_VENDOR_ID, vname, USB_PRODUCT_ID, devname, 1);
if(rval != 0){
fprintf(stderr, "%s: avrdoper_open(): %s\n", progname, usbErrorText(rval));
exit(1);
}
}
static int avrdoper_open(char *port, union pinfo pinfo, union filedescriptor *fdp)
{
int rval;
char *vname = "obdev.at";
char *devname = "AVR-Doper";
rval = usbOpenDevice(fdp, USB_VENDOR_ID, vname, USB_PRODUCT_ID, devname, 1);
if(rval != 0){
avrdude_message(MSG_INFO, "%s: avrdoper_open(): %s\n", progname, usbErrorText(rval));
return -1;
}
return 0;
}
