Reading bits using bitwise operators from 32 bit integer

[S_M_A]

Here's one way

uint32_t val = 4545;
uint8_t bit7_0 = static_cast<uint8_t>( val );
uint8_t bit15_8 = static_cast<uint8_t>( val >> 8 );
uint8_t bit23_16 = static_cast<uint8_t>( val >> 16 ); 
uint8_t bit31_24 = static_cast<uint8_t>( val >> 24 );