Test out some things

app/fskmodem.h

@@ -14,6 +14,11 @@
 #include "../driver/system.h"
 #include "../misc.h"
 #include "../app/app.h"
+#include <string.h>
+#include "../audio.h"
+#include <stdio.h>
+#include "../ui/helper.h"
+#include "../ui/main.h"
 
 // REG_70 bit definitions
 #define TONE1_ENABLE_BIT      (1U << 15)
@@ -73,22 +78,27 @@
 #define FSK_CRC_ON (1U << 6)
 #define FSK_CRC_OFF (0U << 6)
 
-#define DataPacketDataSize (36)
+#define DataPacketDataSize (35)
 
 typedef struct {
     uint32_t dest;
     uint32_t src;
     uint8_t seq;
+    uint8_t ttl;
     uint8_t flags;
     uint8_t data[DataPacketDataSize];
 } DataPacket;
 
 void prepareDataPacket();
 
-void MSG_FSKSendData();
+void MSG_FSKSendData(DataPacket *dataPacketIn);
 
 void MSG_EnableRX(bool enable);
 
+void processReceivedPacket(DataPacket *packet);
+uint16_t calculateCRC(uint8_t *data, size_t length);
+bool MSG_FSKReceiveData();
+
 extern DataPacket dataPacket;
 
 extern DataPacket inBoundPacket;