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uint8_t * const LCDMem = (uint8_t *) &LCDM3;
This code is used in msp430fg4618 trainer kit for lcd configuration.
Could any one please explain the meaning of the above mentioned code?
It allows use of array LCDMem[]? I don’t know how.
The operator
(type) valueis called a cast and implements conversion from one type to another.The code in your example casts one pointer, the address of
LCDM3, to a pointer of a different type. This enables access to the contents ofLCDM3through theLCDMempointer as if it were a contiguous array of bytes (8-bit unsigned integers).For example,
LDCM3could be a structure object, or the first element of an array of structures. The above cast would allow one to read and write the individual bytes of the underlying object(s).