First working version. Tested on ModalAI FlightCore V2

platforms/common/include/px4_platform_common/SerialCommon.hpp

@@ -0,0 +1,38 @@
+
+#pragma once
+
+namespace device
+{
+namespace SerialConfig
+{
+
+
+// ByteSize: number of data bits
+enum class ByteSize {
+	FiveBits  = 5,
+	SixBits   = 6,
+	SevenBits = 7,
+	EightBits = 8,
+};
+
+// Parity: enable parity checking
+enum class Parity {
+	None = 0,
+	Odd  = 1,
+	Even = 2,
+};
+
+// StopBits: number of stop bits
+enum class StopBits {
+	One = 1,
+	Two = 2
+};
+
+// FlowControl: enable flow control
+enum class FlowControl {
+	Disabled = 0,
+	Enabled  = 1,
+};
+
+} // namespace Serial
+} // namespace device