Allow to specify I2C address

sebromero · sebromero · commit ca80885ecd4e · 2025-12-10T18:01:50.000+01:00
diff --git a/src/Modulino_LED_Matrix.h b/src/Modulino_LED_Matrix.h
@@ -42,7 +42,8 @@ class ModulinoLEDMatrix
     void autoscroll(uint32_t interval_ms) {
         _interval = interval_ms;
     }
-    int begin() {
+    int begin(uint8_t address = 0x39) {
+        _address = address;
         bool rv = true;
         _wire->begin();
         return rv;
@@ -63,7 +64,7 @@ class ModulinoLEDMatrix
             }
             _sequenceDone = true;
         }
-        _wire->beginTransmission(0x39);
+        _wire->beginTransmission(_address);
         _wire->write((uint8_t*)frame, sizeof(frame));
         _wire->endTransmission();
     }
@@ -219,4 +220,5 @@ class ModulinoLEDMatrix
     bool _sequenceDone = false;
     voidFuncPtr _callBack = nullptr;
     HardwareI2C* _wire;
+    uint8_t _address = 0;
 };

Original file line number	Diff line number	Diff line change
`@@ -42,7 +42,8 @@ class ModulinoLEDMatrix`
`42`	`42`	`void autoscroll(uint32_t interval_ms) {`
`43`	`43`	`_interval = interval_ms;`
`44`	`44`	`}`
`45`		`- int begin() {`
	`45`	`+ int begin(uint8_t address = 0x39) {`
	`46`	`+ _address = address;`
`46`	`47`	`bool rv = true;`
`47`	`48`	`_wire->begin();`
`48`	`49`	`return rv;`
`@@ -63,7 +64,7 @@ class ModulinoLEDMatrix`
`63`	`64`	`}`
`64`	`65`	`_sequenceDone = true;`
`65`	`66`	`}`
`66`		`- _wire->beginTransmission(0x39);`
	`67`	`+ _wire->beginTransmission(_address);`
`67`	`68`	`_wire->write((uint8_t*)frame, sizeof(frame));`
`68`	`69`	`_wire->endTransmission();`
`69`	`70`	`}`
`@@ -219,4 +220,5 @@ class ModulinoLEDMatrix`
`219`	`220`	`bool _sequenceDone = false;`
`220`	`221`	`voidFuncPtr _callBack = nullptr;`
`221`	`222`	`HardwareI2C* _wire;`
	`223`	`+ uint8_t _address = 0;`
`222`	`224`	`};`