Source Code

Complete Arduino source code for the FTDX-10 controller project.

Project Structure

The code is organized into modular components for easy understanding and modification:

All Source Files

Code Features

Key Functions

Radio Control (FTDX10_CAT class)

// Frequency control
void setFrequency(unsigned long freq);
void getFrequency();
unsigned long getCurrentFrequency();

// Mode control
void setMode(int mode, int bandwidth = 0);
void nextMode();

// VFO control
void selectVFO(char vfo);
void swapVFO();

// Power control
void setPower(int watts);
void setTX(bool tx);

// Audio/RF
void setAFGain(int gain);
void setRFGain(int gain);

// Meters
void getSMeter();
void getPOMeter();

Display Control (NextionDisplay class)

// Event handling
void processEvents();
bool hasEvent();
NextionEvent getEvent();

// Display updates
void setFrequency(String freq);
void setMode(String mode);
void setPower(int watts);
void setSMeter(int value);
void setTXIndicator(bool tx);

// Component control
void setText(const char* component, String text);
void setValue(const char* component, int value);
void setPage(int pageNum);

Hardware Serial Ports

Important Constants

Operating Modes

#define MODE_LSB      1
#define MODE_USB      2
#define MODE_CW       3
#define MODE_FM       4
#define MODE_AM       5
#define MODE_RTTY_LSB 6
#define MODE_CW_R     7
#define MODE_DATA_LSB 8
#define MODE_RTTY_USB 9
#define MODE_DATA_FM  10
#define MODE_FM_N     11
#define MODE_DATA_USB 12
#define MODE_AM_N     13
#define MODE_C4FM     14

Display Events

#define NEX_EVENT_RELEASE 0x00
#define NEX_EVENT_PRESS   0x01

Update Intervals

const unsigned long updateInterval = 100;      // Display update: 100ms
const unsigned long freqUpdateInterval = 500;  // Radio poll: 500ms

Compilation

Required Board

• Board: Arduino Mega 2560 or compatible
• Why: Requires 3 hardware serial ports
• Alternative: Any ATmega2560-based board

No External Libraries Required

All code is self-contained. No need to install additional Arduino libraries!

Customization Ideas

Easy Modifications

• Change update intervals (faster/slower polling)
• Add more bands to band switching
• Modify frequency step size
• Customize display colors and layout
• Add more CAT commands from manual

Advanced Enhancements

• Memory channel storage/recall
• Frequency presets
• Logging functionality
• WiFi connectivity (with ESP32)
• Spectrum scope integration
• Automatic antenna tuner control

Code Documentation