57 lines
1.2 KiB
C++
57 lines
1.2 KiB
C++
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#include <Arduino.h>
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#include <stdint.h>
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#include "error.h"
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#include "IC74HC595.h"
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#include "matrix.h"
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uint8_t matrixcolumns[8] = {0};
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int pokeMatrixPixel(uint8_t x, uint8_t y)
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{
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if (x > 7 || y > 7) {
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ERROR(ERRNO_OUTOFBOUNDS);
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}
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// Because of the alignment of the screen in our demo, we treat columns as the X axis
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matrixcolumns[x] = matrixcolumns[x] | (1 << y);
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return ERRNO_SUCCESS;
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}
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void resetMatrix()
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{
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matrixcolumns[0] = 0;
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matrixcolumns[1] = 0;
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matrixcolumns[2] = 0;
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matrixcolumns[3] = 0;
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matrixcolumns[4] = 0;
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matrixcolumns[5] = 0;
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matrixcolumns[6] = 0;
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matrixcolumns[7] = 0;
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}
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void displayMatrix()
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{
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for (int i = 0; i < 8; i++) {
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writeLEDMatrix(matrixcolumns[i], ~(1 << i));
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}
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}
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void writeLEDMatrix(uint8_t row, uint8_t col)
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{
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digitalWrite(matrixcols.updatepin, LOW);
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shiftOut(matrixcols.datapin, matrixcols.clockpin, LSBFIRST, row);
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shiftOut(matrixcols.datapin, matrixcols.clockpin, MSBFIRST, col);
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digitalWrite(matrixcols.updatepin, HIGH);
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}
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void testMatrix()
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{
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uint8_t row = 0;
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uint8_t col = 0;
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for ( int i = 0; i < 8; i++ ) {
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row = (1 << i);
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col = ~(1 << i);
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Serial.printf("%d = (%d, %d)\n", i, row, col);
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writeLEDMatrix(row, col);
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}
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};
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