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75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
/*
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Binary Send
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This code is meant to demonstrate the sending of binary information
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from the arduino to a serial client. See the serial_client.py file
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which can read the payload being sent
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*/
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unsigned int large_number = 3257493648;
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/*
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Decimal: 3257493648
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Hex: C2296890
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Binary: 11000010 00101001 01101000 10010000
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b1 byte: 11000010
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b1 hex: C2
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b2 byte: 101001
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b2 hex: 29
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b3 byte: 1101000
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b3 hex: 68
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b4 byte: 10010000
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b4 hex: 90
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Number: 11000010001010010110100010010000
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*/
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// unpacks the int into bytes
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byte b1 = large_number >> 24;
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byte b2 = large_number >> 16;
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byte b3 = large_number >> 8;
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byte b4 = large_number;
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// Places the bytes in little endian
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byte byteBuffer[4] = {b4, b3, b2, b1};
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void setup() {
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//Initialize serial and wait for port to open:
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Serial.begin(9600);
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while (!Serial) {
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; // wait for serial port to connect. Needed for native USB port only
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}
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// prints title with ending line break
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Serial.print("Decimal: ");Serial.print(large_number); Serial.println();
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Serial.print("Hex: ");Serial.print(large_number, HEX); Serial.println();
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Serial.print("Binary: ");Serial.print(large_number, BIN); Serial.println();
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Serial.print("b1 byte: ");Serial.print(b1, BIN); Serial.println();
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Serial.print("b1 hex: ");Serial.print(b1, HEX); Serial.println();
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Serial.print("b2 byte: ");Serial.print(b2, BIN); Serial.println();
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Serial.print("b2 hex: ");Serial.print(b2, HEX); Serial.println();
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Serial.print("b3 byte: ");Serial.print(b3, BIN); Serial.println();
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Serial.print("b3 hex: ");Serial.print(b3, HEX); Serial.println();
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Serial.print("b4 byte: ");Serial.print(b4, BIN); Serial.println();
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Serial.print("b4 hex: ");Serial.print(b4, HEX); Serial.println();
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Serial.print("Number: "); Serial.print(large_number, BIN); Serial.println();
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Serial.println("---------------------------------");
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Serial.print("high byte: ");Serial.print(highByte(large_number >> 16), BIN); Serial.println();
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Serial.print("high hex: ");Serial.print(highByte(large_number >> 16), HEX); Serial.println();
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Serial.print("low byte: ");Serial.print(lowByte(large_number >> 16), BIN); Serial.println();
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Serial.print("low hex: ");Serial.print(lowByte(large_number >> 16), HEX); Serial.println();
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Serial.println("---------------------------------");
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Serial.print("high byte: ");Serial.print(highByte(large_number), BIN); Serial.println();
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Serial.print("high hex: ");Serial.print(highByte(large_number), HEX); Serial.println();
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Serial.print("low byte: ");Serial.print(lowByte(large_number), BIN); Serial.println();
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Serial.print("low hex: ");Serial.print(lowByte(large_number), HEX); Serial.println();
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}
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void loop() {
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Serial.write('H');
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Serial.write(byteBuffer, sizeof(byteBuffer));
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Serial.println();
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delay(1000);
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}
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