62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
/*
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PRINT_HEX - Arduino 1.6.0rc1
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Sketch uses 13,336 bytes (12%) of program storage space. Maximum is 108,000 bytes.
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Global variables use 2,592 bytes of dynamic memory.
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Adapted to the Maple Mini by m. ray burnette
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Illustrates how to display a hexadecimal number with a fixed width.
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opyright, Peter H Anderson, Baltimore, MD, Nov, '07
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PUBLIC DOMAIN EXAMPLE
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*/
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#define BAUD 9600
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void setup() // run once, when the sketch starts
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{
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// initialize the digital pin as an output.
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pinMode(33, OUTPUT);
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Serial.begin(BAUD); // BAUD has no effect on USB serial: placeholder for physical UART
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// wait for serial monitor to be connected.
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while (!Serial)
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{
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digitalWrite(33,!digitalRead(33));// Turn the LED from off to on, or on to off
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delay(100); // fast blink
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}
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Serial.println("Print HEX Format");
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}
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void loop()
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{
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while(1)
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{
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print_hex(1024+256+63, 13);
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Serial.println();
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delay(1000);
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}
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}
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void print_hex(int v, int num_places)
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{
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int mask=0, n, num_nibbles, digit;
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for (n=1; n<=num_places; n++)
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{
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mask = (mask << 1) | 0x0001;
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}
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v = v & mask; // truncate v to specified number of places
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num_nibbles = num_places / 4;
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if ((num_places % 4) != 0)
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{
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++num_nibbles;
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}
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do
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{
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digit = ((v >> (num_nibbles-1) * 4)) & 0x0f;
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Serial.print(digit, HEX);
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} while(--num_nibbles);
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}
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