adding packet class first... despite my better judgement I am using a class

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.clang-format

@@ -0,0 +1 @@
+/home/penguin/.clang-format

inc/p_serial_bus.h

@@ -0,0 +1,8 @@
+#ifndef __P_SERIAL_BUS_H__
+#define __P_SERIAL_BUS_H__
+
+void p_sbus_init(void);
+
+void p_sbus_start(void);
+
+#endif

inc/p_serial_packet.h

@@ -0,0 +1,30 @@
+#ifndef __P_SERIAL_PACKET_H__
+#define __P_SERIAL_PACKET_H__
+
+// src_addr {1} +
+// dest_addr {1} +
+// frame_length {1} +
+// checksum {1} +
+// frame_data {512}
+#define MAX_MESSAGE_LEN (516)
+#define MAX_FRAME_DATA_LEN (512)
+#define MASTER_ADDR (0x01)
+
+#include <cinttypes>
+class ps_packet
+{
+public:
+	ps_packet(uint8_t* data);
+	~ps_packet();
+	uint8_t src_addr;
+	uint8_t dest_addr;
+	uint8_t checksum;
+	uint8_t data[MAX_MESSAGE_LEN];
+	bool encode();
+	bool decode();
+
+private:
+	bool validate();
+	void calc_checksum();
+};
+#endif

src/p_serial_packet.cpp

@@ -0,0 +1,19 @@
+#include "p_serial_packet.h"
+
+ps_packet::ps_packet()
+{}
+
+ps_packet::~ps_packet()
+{}
+
+// takes members and prepares the buffer for transmission
+bool ps_packet::encode(uint8_t* buffer)
+{}
+
+bool ps_packet::decode()
+{}
+
+bool ps_packet::validate()
+{}
+void ps_packet::calc_checksum()
+{}