31 lines
1.1 KiB
C++
31 lines
1.1 KiB
C++
#include "PixelMessage.h"
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#include <Arduino.h>
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PixelMessage::PixelMessage()
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{
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}
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PixelMessage::PixelMessage(byte* rawMessage) : PixelMessage()
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{
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// Casting solution from http://stackoverflow.com/a/300837/1460422
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// Basically, it casts a byte* pointer reference to the start of the bit we want to extract
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// into a void* (which is just a point that points to a specific point in memory without a
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// specific type associated with it), which we then cast into a pointer of the type we
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// actually want. This extra step is needed to get it to cast multiple consecutive bytes
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// in the raw message into the type we want.
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// With the casts done, we simply dereference the pointer to shove the value into the
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// instance of this class that we're building.
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ProtocolVersion = *(static_cast<unsigned short*>(static_cast<void*>(rawMessage)));
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MessageType = *(static_cast<unsigned short*>(static_cast<void*>(rawMessage + 2)));
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MessageId = *(static_cast<unsigned int*>(static_cast<void*>(rawMessage + 4)));
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MessageLength = *(static_cast<unsigned int*>(static_cast<void*>(rawMessage + 8)));
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// TODO: Sort out the payload here.
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}
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PixelMessage::~PixelMessage()
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{
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}
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