From: DrPi <314@drpi.fr>
Subject: Re: Record initialisation question
Date: Sun, 17 Jan 2021 18:08:52 +0100 [thread overview]
Message-ID: <60046f27$0$6450$426a74cc@news.free.fr> (raw)
In-Reply-To: <5ff9779d$0$24281$426a74cc@news.free.fr>
Le 09/01/2021 à 10:30, DrPi a écrit :
> Hi,
>
> I'm working on a µP BSP. The boot sequence of this µP requires byte
> structures located in FLASH memory.
> For example :
>
> type t_Dcd_Header is record
> Tag : Unsigned_8 := 16#D2#;
> Length : Unsigned_16 := 4; -- Length in byte of the DCD
> structure (this header included)
> Version : Unsigned_8 := 16#41#;
> end record
> with Object_Size => 32,
> Bit_Order => System.Low_Order_First;
>
> for t_Dcd_Header use record
> Tag at 0 range 0 .. 7;
> Length at 0 range 8 .. 23;
> Version at 0 range 24 .. 31;
> end record;
>
> The t_Dcd_Header is part of t_Dcd record.
> The Length field of t_Dcd_Header must contain the length of t_Dcd.
>
> Dcd : constant t_Dcd :=
> ( Dcd_Header => ( Length => ???, -- Length of Dcd
> others => <>),
> ...
> );
>
> Is there a way to automatically set Length ?
> Dcd goes in a dedicated .txt section.
>
> Nicolas
I tried to use a C module as a workaround.
I added C to my .gpr file : for Languages use ("Ada", "C");
The C module is compiled correctly. However, it is not linked. This is
not a surprise since it contains no object used by Ada modules.
prev parent reply other threads:[~2021-01-17 17:08 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-09 9:30 Record initialisation question DrPi
2021-01-09 10:46 ` Dmitry A. Kazakov
2021-01-10 16:41 ` DrPi
2021-01-11 21:48 ` Shark8
2021-01-12 11:38 ` Simon Wright
2021-01-12 15:01 ` Shark8
2021-01-14 21:32 ` Simon Wright
2021-01-14 23:12 ` Shark8
2021-01-14 12:58 ` DrPi
2021-01-17 17:03 ` DrPi
2021-01-17 23:55 ` Shark8
2021-01-18 20:02 ` DrPi
2021-01-19 5:50 ` Randy Brukardt
2021-01-09 15:44 ` Niklas Holsti
2021-01-10 16:53 ` DrPi
2021-01-10 19:30 ` Niklas Holsti
2021-01-10 21:27 ` DrPi
2021-01-10 22:14 ` Niklas Holsti
2021-01-11 17:46 ` DrPi
2021-01-11 20:58 ` Niklas Holsti
2021-01-14 13:07 ` DrPi
2021-01-14 13:36 ` AdaMagica
2021-01-14 14:07 ` Jeffrey R. Carter
2021-01-14 14:09 ` Jeffrey R. Carter
2021-01-14 14:27 ` Niklas Holsti
2021-01-14 16:53 ` Shark8
2021-01-15 7:50 ` DrPi
2021-01-15 18:15 ` Shark8
2021-01-16 10:28 ` DrPi
2021-01-14 16:59 ` Paul Rubin
2021-01-15 7:49 ` DrPi
2021-01-17 17:08 ` DrPi [this message]
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