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# 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)
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