Successful label printing

src/P700Printer.cpp

@@ -22,7 +22,6 @@
 #include <algorithm>
 #include <spdlog/spdlog.h>
 
-#include <chrono>
 #include <cstdint>
 #include <iostream>
 #include <iterator>
@@ -141,7 +140,7 @@ bool P700Printer::printBitmap(const graphics::Bitmap<graphics::ALPHA8>& bitmap)
     rastercmd[1] = 0x00;  // size +1
     rastercmd[2] = 0x00;
     rastercmd[3] = 0x00;  // size -1
-    for (unsigned int i = 0; i < 8; i++) {
+    for (unsigned int i = 0; i < bm.getWidth(); i++) {
         auto bmcol = bm.getCol(i);
         if (!bmcol) {
             spdlog::error("Out of bounds bitmap access");
@@ -156,7 +155,9 @@ bool P700Printer::printBitmap(const graphics::Bitmap<graphics::ALPHA8>& bitmap)
 
         buf[1] = col.size() + 1;
         buf[3] = col.size() - 1;
-        send(buf);
+        if (!send(buf)) {
+            break;
+        };
     }
 
     send(commands["eject"]);
@@ -177,15 +178,24 @@ bool P700Printer::send(std::vector<uint8_t>& data) {
         return false;
     }
 
+    int tx = 0;
+
 #ifndef DRYRUN
-    if (!mUsbHndl->bulkTransfer(0x02, data, nullptr, 0)) {
+    if (!mUsbHndl->bulkTransfer(0x02, data, &tx, 0)) {
         spdlog::error("Error writing command to Printer: {}", mUsbHndl->getLastErrorString());
         return false;
     }
 #else
+    tx = data.size();
     spdlog::debug("USB raw data(len {}): {}", data.size(), spdlog::to_hex(data));
 #endif
 
+    if (tx != static_cast<int>(data.size())) {
+        spdlog::error("Could not transfer all data via USB bulk transfer. Only send {} of {} bytes",
+                      tx, data.size());
+        return false;
+    }
+
     return true;
 }