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Editorial Team
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Asked: 2026-06-08T02:17:24+00:00

I am using bluetooth 4 (Low Energy) and need to transfer an 8-bit slider

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I am using bluetooth 4 (Low Energy) and need to transfer an 8-bit slider value to my slave device. The receiving end should get something like this : 000000A3 but right now I am stuck with A3000000

I have tried different solutions:

int value = ((int)slider.value >> 24) ;
NSData *dataToWrite = [NSData dataWithBytes:&value length:4]; //data to be sent has to be of type NSData

and 

int value[] = {0x00, 0x00, 0x00, slider.value};

and the only working one

char value[4] = {0x00, 0x00, 0x00, slider.value};

but I think this looks a bit ugly. Any other ideas on how to do this?

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1 Answer

  1. Editorial Team

    Core Foundation has functions for handling byte-order conversions: Byte-Order Utilities Reference

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