Added Usb Detection using libUsb

src/P700Driver.cpp

@@ -3,12 +3,26 @@
 #include <iostream>
 #include <stdexcept>
 
+#include <spdlog/spdlog.h>
+
 namespace ptprnt::driver {
 
-P700Driver::P700Driver(uint16_t UsbDevVendor, uint16_t UsbDevId) {}
+P700Driver::P700Driver(std::shared_ptr<Usb> usbDriver, uint16_t usbDevVendor, uint16_t usbProductId)
+    : mUsbDriver{std::move(usbDriver)}
+    , mUsbDev{.vendorId = usbDevVendor, .productId = usbProductId}
+
+{
+    spdlog::debug("P700Driver constructing");
+    if(!init()) {
+        spdlog::error("Could not find any P700 Printers.");
+    }
+    else {
+        spdlog::info("Found P700 Printer :-).");
+    }
+}
 
 P700Driver::~P700Driver() {
-    
+    spdlog::debug("P700Driver destructing");
 }
 
 driver::info P700Driver::getInfo() {
@@ -27,4 +41,26 @@ bool P700Driver::command() {
     return false;
 }
 
+bool P700Driver::init() {
+    auto devs = mUsbDriver->getDevices();
+
+    if(!devs.has_value()) {
+        spdlog::error("No USB devices found");
+        return false;
+    }
+    
+    auto devIt = std::find_if(devs.value().begin(), devs.value().end(), 
+        [=] (auto dev) { return mUsbDev.vendorId == dev.vendorId && mUsbDev.productId == dev.productId;}
+    );
+
+    if(devIt == devs.value().end()) {
+        spdlog::error("No device with {0:04X}:{1:04X}", mUsbDev.vendorId, mUsbDev.productId);
+        return false;
+    }
+
+    mUsbDev = *devIt;
+
+    return true;
+}
+
 }  // namespace ptprnt::driver