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Added function to rotate each 8x8 matrix 90° left #8

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Added function to rotate each 8x8 matrix 90° left #8

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25974e0
added function rotateLeft()
targetblank Oct 17, 2016
23d9cd9
added function setRotation(true|false) to enable/disable 90° rotation…
targetblank Oct 17, 2016
37e6adf
removed comment
targetblank Oct 17, 2016
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22 changes: 20 additions & 2 deletions LedMatrix.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ LedMatrix::LedMatrix(byte numberOfDevices, byte slaveSelectPin) {
myNumberOfDevices = numberOfDevices;
mySlaveSelectPin = slaveSelectPin;
cols = new byte[numberOfDevices * 8];
rotatedCols = new byte[numberOfDevices * 8];
}

/**
Expand Down Expand Up @@ -92,11 +93,13 @@ void LedMatrix::calculateTextAlignmentOffset() {
void LedMatrix::clear() {
for (byte col = 0; col < myNumberOfDevices * 8; col++) {
cols[col] = 0;
}

}
}

void LedMatrix::commit() {
if ( rotationIsEnabled ) {
rotateLeft();
}
for (byte col = 0; col < myNumberOfDevices * 8; col++) {
sendByte(col / 8, col % 8 + 1, cols[col]);
}
Expand Down Expand Up @@ -163,4 +166,19 @@ void LedMatrix::setColumn(int column, byte value) {

void LedMatrix::setPixel(byte x, byte y) {
bitWrite(cols[x], y, true);
}

void LedMatrix::setRotation(bool enabled) {
rotationIsEnabled = enabled;
}

void LedMatrix::rotateLeft() {
for (byte deviceNum = 0; deviceNum < myNumberOfDevices; deviceNum++) {
for(byte posY = 0; posY < 8; posY++) {
for(byte posX = 0; posX < 8; posX++) {
bitWrite(rotatedCols[8 * (deviceNum) + posY], posX, bitRead(cols[8 * (deviceNum) + 7-posX], posY));
}
}
}
memcpy(cols, rotatedCols, myNumberOfDevices * 8);
}
8 changes: 8 additions & 0 deletions LedMatrix.h
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Original file line number Diff line number Diff line change
Expand Up @@ -116,9 +116,15 @@ class LedMatrix {
* Oscilate the text between the two limits.
*/
void oscillateText();

/**
* Enables 90° rotation for each 8x8 matrix.
*/
void setRotation(bool enabled);

private:
byte* cols;
byte* rotatedCols;
byte spiregister[8];
byte spidata[8];
String myText;
Expand All @@ -130,6 +136,8 @@ class LedMatrix {
byte mySlaveSelectPin = 0;
byte myCharWidth = 7;
byte myTextAlignment = 1;
bool rotationIsEnabled = false;

void calculateTextAlignmentOffset();
void rotateLeft();
};