Hello, i’m trying to rebuild a float number sent on a serial line. I had trouble working on a bitwise operation. Code : [image] I expected a byte to be 8bits of length but I can only fill the array with 4bits values (Ex : 0xF) See the byte processing reference : Datatype for bytes, 8 bits of…

[image] moimat56: I expected a byte to be 8bits of length but I can only fill the array with 4bits values (Ex : 0xF) Actually you can use up to 0x7F, which is the hex value for 127. And you can use -0x80, hex for -128. So the entire signed range of the byte is definable in hex, it just doesn…

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Processing Coding Questions

neilcsmith September 13, 2019, 7:05pm 7

Because that is the highest number you can store in a signed byte. Add 1 and you get -0x80. Hex literals are still signed.

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