Skip to content

Allow to specify I2C address of LED Matrix #50

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
facchinm merged 1 commit into from
Dec 11, 2025
Merged

Allow to specify I2C address of LED Matrix #50

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 16 additions & 2 deletions src/Modulino_LED_Matrix.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -23,20 +23,33 @@
#define DEFAULT_WIRE Wire
#endif

#define DEFAULT_ADDRESS 0x39

class ModulinoLEDMatrix
#ifdef MATRIX_WITH_ARDUINOGRAPHICS
: public ArduinoGraphics
#endif
{

public:
ModulinoLEDMatrix(HardwareI2C& wire = DEFAULT_WIRE)
ModulinoLEDMatrix(uint8_t address = DEFAULT_ADDRESS, HardwareI2C& wire = DEFAULT_WIRE)
#ifdef MATRIX_WITH_ARDUINOGRAPHICS
: ArduinoGraphics(canvasWidth, canvasHeight)
#endif
{
_address = address;
_wire = &wire;
}

ModulinoLEDMatrix(HardwareI2C& wire, uint8_t address = DEFAULT_ADDRESS)
#ifdef MATRIX_WITH_ARDUINOGRAPHICS
: ArduinoGraphics(canvasWidth, canvasHeight)
#endif
{
_address = address;
_wire = &wire;
}

// TODO: find a better name
// autoscroll will be slower than calling next() at precise times
void autoscroll(uint32_t interval_ms) {
Expand All @@ -63,7 +76,7 @@ class ModulinoLEDMatrix
}
_sequenceDone = true;
}
_wire->beginTransmission(0x39);
_wire->beginTransmission(_address);
_wire->write((uint8_t*)frame, sizeof(frame));
_wire->endTransmission();
}
Expand Down Expand Up @@ -219,4 +232,5 @@ class ModulinoLEDMatrix
bool _sequenceDone = false;
voidFuncPtr _callBack = nullptr;
HardwareI2C* _wire;
uint8_t _address = DEFAULT_ADDRESS;
};