Don’t know how libusb works, but the software stops here:
libusb_fill_bulk_transfer(xferBulkIn, devHandle, BULK_READ_ENDPOINT, ch341inBuffer,
EEPROM_READ_BULKIN_BUF_SZ, cbBulkIn, NULL, DEFAULT_TIMEOUT);
libusb_fill_bulk_transfer(xferBulkOut, devHandle, BULK_WRITE_ENDPOINT,
ch341outBuffer, EEPROM_READ_BULKOUT_BUF_SZ,cbBulkOut, NULL, DEFAULT_TIMEOUT);
fprintf(debugout, "Filled USB transfer structures\n");
libusb_submit_transfer(xferBulkIn);
fprintf(debugout, "Submitted BULK IN start packet\n");
libusb_submit_transfer(xferBulkOut);
fprintf(debugout, "Submitted BULK OUT setup packet\n");
readbuf = buffer;
byteoffset = 0;
while (byteoffset < bytestoread) {
fprintf(stdout, "Read [%d] of [%d] bytes \r", byteoffset, bytestoread);
ret = libusb_handle_events_timeout(NULL, &tv);
if (ret < 0 || getnextpkt == -1) { // indicates an error
fprintf(stderr, "ret from libusb_handle_timeout = %d\n", ret);
fprintf(stderr, "getnextpkt = %d\n", getnextpkt);
fprintf(stderr, "USB read error : %s\n", strerror(-ret));
goto out_deinit;
}
if(getnextpkt == 1) { // callback function reports a new BULK IN packet received
getnextpkt = 0; // reset the flag
readpktcount++; // increment the read packet counter
byteoffset += EEPROM_READ_BULKIN_BUF_SZ;
fprintf(debugout, "\nRe-submitting transfer request to BULK IN endpoint\n");
libusb_submit_transfer(xferBulkIn); // re-submit request for next BULK IN packet of EEPROM data
if(syncackpkt)
syncackpkt = 0;
// if 4th packet received, we are at end of 0x80 byte data block,
// if it is not the last block, then resubmit request for data
if(readpktcount==4 && byteoffset < bytestoread) {
fprintf(debugout, "\nSubmitting next transfer request to BULK OUT endpoint\n");
readpktcount = 0;
memcpy(ch341outBuffer, CH341_EEPROM_READ_NEXT_CMD, CH341_EEPROM_READ_CMD_SZ);
ch341outBuffer[4] = (uint8_t) (byteoffset >> 8 & 0xff); // MSB (big-endian) byte address
ch341outBuffer[5] = (uint8_t) (byteoffset & 0xff); // LSB of 16-bit byte address
libusb_fill_bulk_transfer(xferBulkOut, devHandle, BULK_WRITE_ENDPOINT, ch341outBuffer,
EEPROM_READ_BULKOUT_BUF_SZ, cbBulkOut, NULL, DEFAULT_TIMEOUT);
libusb_submit_transfer(xferBulkOut);// update transfer struct (with new EEPROM page offset)
// and re-submit next transfer request to BULK OUT endpoint
in this while loop :
while (byteoffset < bytestoread)
getnextpkt remain at 0, so the while keep waiting…
Of the two callback function :
// Callback function for async bulk in comms
void cbBulkIn(struct libusb_transfer *transfer) {
int i;
switch(transfer->status) {
case LIBUSB_TRANSFER_COMPLETED:
// display the contents of the BULK IN data buffer
fprintf(debugout,"\ncbBulkIn(): status %d - Read %d bytes\n",transfer->status,transfer->actual_length);
for(i=0; i < transfer->actual_length; i++) {
if(!(i%16))
fprintf(debugout, "\n ");
fprintf(debugout, "%02x ", transfer->buffer[i]);
}
fprintf(debugout, "\n");
// copy read data to our EEPROM buffer
memcpy(readbuf + byteoffset, transfer->buffer, transfer->actual_length);
getnextpkt = 1;
break;
default:
fprintf(stderr, "\ncbBulkIn: error : %d\n", transfer->status);
getnextpkt = -1;
}
return;
}
// Callback function for async bulk out comms
void cbBulkOut(struct libusb_transfer *transfer) {
syncackpkt = 1;
fprintf(debugout, "\ncbBulkOut(): Sync/Ack received: status %d\n", transfer->status);
return;
}
cbBulkIn is never called. (I put a fprintf in to check.)
use “setarch x86” in Terminal, this switches from the old gcc2 compiler to the newer gcc13 compiler, that should fix the build (I guess you installed “libusb_x86_devel”?, if so you should be good)