Created
September 7, 2012 18:29
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Simple Message on an LED Scroller with Alpha Protocol
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// Commands for Alpha Sign Communication Protocol | |
byte NUL = 0x00; | |
byte START_HEADER = 0x01; | |
byte START_TEXT = 0x02; | |
byte END_TRANSMISSION = 0x04; | |
byte ESC = 0x1B; | |
byte FILL = 0x30; | |
byte ROTATE = 0x61; | |
byte SLOW = 0x15; | |
byte FAST = 0x19; | |
byte TIME = 0x13; | |
byte CALL_STRING = 0x10; | |
byte CALL_SIZE = 0x1A; | |
byte SIZE_LARGE = 0x33; | |
byte SIZE_SMALL = 0x31; | |
void setup() { | |
Serial.begin(9600); | |
writeText("If you can read this, you've got it working!"); | |
} | |
void loop() { | |
} | |
void writeText(String text) { | |
Serial.write(NUL); // Start frame sync chars | |
Serial.write(NUL); | |
Serial.write(NUL); | |
Serial.write(NUL); | |
Serial.write(NUL); // end frame sync chars | |
Serial.write(START_HEADER); // start of header | |
Serial.write("Z00"); // all sign types, all addresses | |
Serial.write(START_TEXT); //start of text | |
Serial.write("AA"); // write command, text file A | |
Serial.write(ESC); | |
Serial.write(FILL); | |
Serial.write(ROTATE); | |
Serial.print(text); | |
Serial.write(END_TRANSMISSION); | |
} |
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