From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] pcc limitation?
Date: Sun, 7 Nov 2010 13:26:41 -0500 [thread overview]
Message-ID: <1ab89ced7625309d8c289292c4a4086c@brasstown.quanstro.net> (raw)
In-Reply-To: <4CD6D235.3030704@gmx.net>
> The big problem with defining it as an array inside struct spicmd is
> that writearr has variable length. writearr is a command sent to a SPI
> chip by a SPI controller. writearr can have any length of 1-1056 bytes.
> There's also an analogous readarr in struct spi_command (not mentioned
> in the example to keep it brief) and that one can have any length
> between 0 and 16777217 (2^24+1) bytes. One variable-length array at the
> end of a struct is possible, but an array of structs with a variable
> length array in the struct won't work since you can't compute the offset
> of individual members of the outer arrray.
what is the largest sequence of commands in practice?
- erik
next prev parent reply other threads:[~2010-11-07 18:26 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-07 0:56 Carl-Daniel Hailfinger
2010-11-07 4:02 ` Federico G. Benavento
2010-11-07 12:32 ` Carl-Daniel Hailfinger
2010-11-07 14:46 ` erik quanstrom
2010-11-07 16:22 ` Carl-Daniel Hailfinger
2010-11-07 18:26 ` erik quanstrom [this message]
2010-11-07 19:36 ` Carl-Daniel Hailfinger
2010-11-07 19:42 ` erik quanstrom
2010-11-08 0:16 ` Carl-Daniel Hailfinger
2010-11-08 0:56 ` erik quanstrom
2010-11-08 9:39 ` Julius Schmidt
2010-11-08 14:00 ` erik quanstrom
2010-11-08 15:17 ` Anthony Sorace
2010-11-08 2:58 ` Russ Cox
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