This is an example on how to use an OLED display to display the VU meters and mute/solo states of the eight first tracks, by using the Arduino as a Mackie Control Universal. This is an example modified to work with the ESP32 only, using MIDI over Bluetooth Low Energy.
Add a capacitor between the reset pin of the display and ground, and a resistor from reset to 3.3V. The values are not critical, 0.1µF and 10kΩ work fine.
You do need some way to reset the display, without it, it won't work.
Alternatively, you could use an IO pin from the ESP32 to reset the display, but this just "wastes" a pin.
The first display should now display the level meters and mute/solo states of the first 8 tracks.
Map "Control Surface" as a Mackie Control Universal unit in your DAW.
constexpr uint8_t SCREEN_WIDTH = 128;
constexpr uint8_t SCREEN_HEIGHT = 64;
constexpr int8_t OLED_DC = 15;
constexpr int8_t OLED_reset = -1;
constexpr int8_t OLED_CS = 2;
constexpr uint32_t SPI_Frequency = SPI_MAX_SPEED;
Adafruit_SSD1306 ssd1306Display {SCREEN_WIDTH, SCREEN_HEIGHT, &SPI,
OLED_DC, OLED_reset, OLED_CS,
SPI_Frequency};
public:
MySSD1306_DisplayInterface(Adafruit_SSD1306 &display)
if (!disp.begin())
}
disp.drawFastHLine(0, 52, 128, WHITE);
disp.drawRect(0, 0, 128, 64, WHITE);
}
} display = ssd1306Display;
};
};
{1, decay},
{2, decay}, {3, decay}, {4, decay}, {5, decay},
{6, decay}, {7, decay}, {8, decay},
};
{display, VUMeters[0], {2 + 16 * 0, 50}, 12, 3, 1, WHITE},
{display, VUMeters[1], {2 + 16 * 1, 50}, 12, 3, 1, WHITE},
{display, VUMeters[2], {2 + 16 * 2, 50}, 12, 3, 1, WHITE},
{display, VUMeters[3], {2 + 16 * 3, 50}, 12, 3, 1, WHITE},
{display, VUMeters[4], {2 + 16 * 4, 50}, 12, 3, 1, WHITE},
{display, VUMeters[5], {2 + 16 * 5, 50}, 12, 3, 1, WHITE},
{display, VUMeters[6], {2 + 16 * 6, 50}, 12, 3, 1, WHITE},
{display, VUMeters[7], {2 + 16 * 7, 50}, 12, 3, 1, WHITE},
};
{display, mute[0],
XBM::mute_7, {4 + 16 * 0, 54}, WHITE},
{display, mute[1],
XBM::mute_7, {4 + 16 * 1, 54}, WHITE},
{display, mute[2],
XBM::mute_7, {4 + 16 * 2, 54}, WHITE},
{display, mute[3],
XBM::mute_7, {4 + 16 * 3, 54}, WHITE},
{display, mute[4],
XBM::mute_7, {4 + 16 * 4, 54}, WHITE},
{display, mute[5],
XBM::mute_7, {4 + 16 * 5, 54}, WHITE},
{display, mute[6],
XBM::mute_7, {4 + 16 * 6, 54}, WHITE},
{display, mute[7],
XBM::mute_7, {4 + 16 * 7, 54}, WHITE},
};
{display, solo[0],
XBM::solo_7, {4 + 16 * 0, 54}, WHITE},
{display, solo[1],
XBM::solo_7, {4 + 16 * 1, 54}, WHITE},
{display, solo[2],
XBM::solo_7, {4 + 16 * 2, 54}, WHITE},
{display, solo[3],
XBM::solo_7, {4 + 16 * 3, 54}, WHITE},
{display, solo[4],
XBM::solo_7, {4 + 16 * 4, 54}, WHITE},
{display, solo[5],
XBM::solo_7, {4 + 16 * 5, 54}, WHITE},
{display, solo[6],
XBM::solo_7, {4 + 16 * 6, 54}, WHITE},
{display, solo[7],
XBM::solo_7, {4 + 16 * 7, 54}, WHITE},
};
void setup() {
}
void loop() {
}
The main header file that includes all Control-Surface header files.
Control_Surface_ & Control_Surface
A predefined instance of the Control Surface to use in the Arduino sketches.
A class that displays a bitmap depending on the state of a MIDINote or any other object that has a ge...
void begin()
Initialize the Control_Surface.
void loop()
Update all MIDI elements, send MIDI events and read MIDI input.
virtual void begin()
Initialize the display.
Displays a MCU level meter.
A MIDI input element that represents a Mackie Control Universal VU meter.
Generic base class for classes that listen for MIDI Note, Control Change and Key Pressure events on a...
This class creates a mapping between the Adafruit_SSD1306 display driver and the general display inte...
void drawBackground() override=0
Draw a custom background.
#define FATAL_ERROR(msg, errc)
Print the error message and error code, and stop the execution.
constexpr uint8_t MUTE_1
Mute 1 (In/Out)
constexpr uint8_t SOLO_6
Solo 6 (In/Out)
constexpr uint8_t MUTE_5
Mute 5 (In/Out)
constexpr uint8_t MUTE_6
Mute 6 (In/Out)
constexpr uint8_t SOLO_2
Solo 2 (In/Out)
constexpr uint8_t SOLO_1
Solo 1 (In/Out)
constexpr uint8_t SOLO_8
Solo 8 (In/Out)
constexpr uint8_t MUTE_8
Mute 8 (In/Out)
constexpr uint8_t SOLO_4
Solo 4 (In/Out)
constexpr uint8_t SOLO_5
Solo 5 (In/Out)
constexpr uint8_t MUTE_7
Mute 7 (In/Out)
constexpr uint8_t MUTE_4
Mute 4 (In/Out)
constexpr uint8_t SOLO_7
Solo 7 (In/Out)
constexpr uint8_t SOLO_3
Solo 3 (In/Out)
constexpr uint8_t MUTE_2
Mute 2 (In/Out)
constexpr uint8_t MUTE_3
Mute 3 (In/Out)
constexpr unsigned int Hold
Don't decay automatically, hold the latest value until a new one is received.
const XBitmap solo_7
XBitmap solo_7 (7px × 7px)
const XBitmap mute_7
XBitmap mute_7 (7px × 7px)
A class for MIDI interfaces sending MIDI messages over a Bluetooth Low Energy (BLE) connection.