Removed time dependency

src/NbusBridgeDriver/NbusCommunicatorEsp32.cpp

@@ -48,7 +48,7 @@ DataFrame* NbusCommunicatorEsp32::receiveFromSlave()
     //HAL_GPIO_WritePin(GPIOB, GPIO_PIN_3, GPIO_PIN_SET);
     
     // reference time
-    time_t time0 = millis();
+    uint32_t time0 = millis();
 
     // read packet length
     while (packet_size == 0 && millis() - time0 <= NBUS_COMM_UART_RX_TIMEOUT)