Function bitreverseOneByte

src/IRProtocol.hpp:170–181

@} * \addtogroup Utils Utility functions * @{ */ * Function to bit reverse OLD MSB values of e.g. NEC. **********************************************************************************************************************/

 * Function to bit reverse OLD MSB values of e.g. NEC.
 **********************************************************************************************************************/
uint8_t bitreverseOneByte(uint8_t aValue) {
//    uint8_t tReversedValue;
//    return __builtin_avr_insert_bits(0x01234567, aValue, tReversedValue);
// 76543210
    aValue = (aValue >> 4) | (aValue << 4); // Swap in groups of 4
// 32107654
    aValue = ((aValue & 0xcc) >> 2) | ((aValue & 0x33) << 2); // Swap in groups of 2
// 10325476
    aValue = ((aValue & 0xaa) >> 1) | ((aValue & 0x55) << 1); // Swap bit pairs
// 01234567
    return aValue;
}

uint32_t bitreverse32Bit(uint32_t aInput) {
//    __builtin_avr_insert_bits();