elegante inversion.
/*------------------------------------------------------------------------------ INVERSION DE BYTE 8 BIT, LSB -> MSB ------------------------------------------------------------------------------*/ unsigned char mr; unsigned char invertir_byte (mr) { mr = (mr & 0x0F) << 4 | (mr & 0xF0) >> 4; mr = (mr & 0x33) << 2 | (mr & 0xCC) >> 2; mr = (mr & 0x55) << 1 | (mr & 0xAA) >> 1; return (mr); }
Since you've started experimenting, why don't you try another approach: use the bit addressing capabilities of the 8051 and convert the byte bit-by-bit? You can use bdata and sbit keywords to achieve this.