30 lines
694 B
C++
30 lines
694 B
C++
void writeCharacter(unsigned char row, unsigned char col, unsigned char val) {
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unsigned char buf[4] = {0xFD, 0, 0, 0};
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buf[1] = col;
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buf[2] = row;
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buf[3] = val;
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Serial.write(buf, 4);
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}
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unsigned char readCharacter(unsigned char row, unsigned char col) {
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unsigned long transaction_begin;
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unsigned char buf[4] = {0xFA, 0, 0};
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buf[1] = col;
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buf[2] = row;
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Serial.write(buf, 3);
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for(transaction_begin = millis(); !Serial.available(); millis() < (transaction_begin+50));
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return Serial.read();
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}
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void clearScreen() {
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unsigned char cmd = 0xFC;
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Serial.write(&cmd, 1);
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delay(20);
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}
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void screenScroll() {
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unsigned char cmd = 0xFB;
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Serial.write(&cmd, 1);
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delay(20);
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}
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