---
name: "crc7"
section: "9"
platform: "linux"
package: "linux-manual-3.2"
version: "3.2.78-1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/crc7"
---

# crc7(9)

update the CRC7 for the data buffer

## NAME

crc7 - update the CRC7 for the data buffer

## SYNOPSIS

**u8 crc7(u8** *crc***, const u8 \*** *buffer***, size\_t** *len***);**

## ARGUMENTS

*crc*

previous CRC7 value

*buffer*

data pointer

*len*

number of bytes in the buffer

## CONTEXT

any

## DESCRIPTION

Returns the updated CRC7 value.

## COPYRIGHT