AcquisitionDevice: refactor to make it less FPGA dependent

receiver/host/PCIExpressDevice.cpp

@@ -125,12 +125,12 @@ void PCIExpressDevice::HW_ReadActionRegister(ActionConfig *config) {
                               "Failed reading config", errno);
 }
 
-uint64_t PCIExpressDevice::HW_GetMACAddress() const {
+std::string PCIExpressDevice::GetMACAddress() const {
     uint64_t tmp;
     if (ioctl(fd, IOCTL_JFJOCH_GET_MAC, &tmp) != 0)
         throw JFJochException(JFJochExceptionCategory::PCIeError,
                               "Failed getting MAC address", errno);
-    return tmp;
+    return MacAddressToStr(tmp);
 }
 
 void PCIExpressDevice::SetMACAddress(uint64_t mac_addr_network_order) {
@@ -195,10 +195,10 @@ void PCIExpressDevice::SetIPv4Address(uint32_t ipv4_addr_network_order) {
                               "Failed setting IPv4 address", errno);
 }
 
-uint32_t PCIExpressDevice::HW_GetIPv4Address() const {
+std::string PCIExpressDevice::GetIPv4Address() const {
     uint32_t tmp;
     if (ioctl(fd, IOCTL_JFJOCH_GET_IPV4, &tmp) != 0)
         throw JFJochException(JFJochExceptionCategory::PCIeError,
                               "Failed getting MAC address", errno);
-    return tmp;
+    return IPv4AddressToStr(tmp);
 }