# modbus_get_byte_from_bits ## Name modbus_get_byte_from_bits - get the value from many bits ## Synopsis ```c uint8_t modbus_get_byte_from_bits(const uint8_t *src, int index, unsigned int nb_bits); ``` ## Description The *modbus_get_byte_from_bits()* function shall extract a value from many bits. All `nb_bits` bits from `src` at position `index` will be read as a single value. To obtain a full byte, set `nb_bits` to 8. ## Return value The function shall return a byte containing the bits read. ## See also - [modbus_set_bits_from_byte](modbus_set_bits_from_byte.md) - [modbus_set_bits_from_bytes](modbus_set_bits_from_bytes.md)