Different size definition in Matlab and Simulink

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Leon
Leon 2022-12-16
评论： Leon 2022-12-18
I am trying to work with TCP/IP communication in Simulink using "Simulink Coder" and "Simulink Desktop Real-Time" and faced a confusing problem. The size of an expression in Matlab is [1, 1].
>> bytes = uint8([0, 1]);
>> byte = typecast(bytes, 'uint16');
>> size(typecast(bytes, 'uint16'))
ans =
1 1
>>
However, when the same exact expression is run in Simulink through the "Matlab Function" block, the result size is [8, 1], but it is needed to be [1, 1].
How could it be solved or explained?

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回答（1 个）

VBBV
VBBV 2022-12-16
编辑：VBBV 2022-12-16
It seems you are accessing 2 elements of array data with each representing 4 byte register address. Each element of which has 4 digits. For example, a 32 Bit x86 chip has register length of 4 byte can be stored and accessed as you did

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