[Tinyos Core WG] CRC interface

[David Moss]

So.. how about we make the interface asynchronous while we're at it?  This
can be used immediately to implement asynchronous software CRC checking of
radio packets. 


interface Crc {

  /**
   * Compute the CRC-16 value of a byte array.
   *
   * @param   buf A pointer to the buffer over which to compute CRC.
   * @param   len The length of the buffer over which to compute CRC.
   * @return  The CRC-16 value.
   */
  async command uint16_t crc16(void* buf, uint8_t len);
  
  /**
   * Compute a generic CRC-16 using a given seed.  Used to compute CRC's
   * of discontinuous data.
   * 
   * @param startCrc An initial CRC value to begin with
   * @param buf A pointer to a buffer of data
   * @param len The length of the buffer
   * @return The CRC-16 value.
   */
  async command uint16_t seededCrc16(uint16_t startCrc, void *buf, uint8_t
len);
  
}

If there are no more suggestions, I'll update these modules by the end of
the week.

-David


-----Original Message-----
From: Philip Levis [mailto:pal at cs.stanford.edu] 
Sent: Tuesday, September 25, 2007 11:11 PM
To: Kevin Klues
Cc: David Moss; TinyOS Core WG
Subject: Re: [Tinyos Core WG] CRC interface

On Sep 25, 2007, at 9:13 PM, Kevin Klues wrote:

> Does crc16_seeded follow the coding standard in TEP 3?
>
> Section 4.1.1
> Commands, events, tasks and functions should be mixed case,  
> starting lower case.

Nope. Whoops. :)

Phil