| Commit message (Collapse) | Author | Age |
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Since static_assertions 1.0.0, we no longer have to specify a label when
calling an assert macro. Therefore we can also remove the label from
our own assert macro assert_maximum_size.
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The request and response structs for a command should not be bigger than
the buffer they are read from or written to. Therefore we add
assertions that enforce this property at compile time.
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To increase type safety, we use references to (sized) arrays instead of
slices where possible.
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Previously, we had the device::REQUEST_DATA_LEN constant for the size of
the raw data in the request, and the commands::COMMAND_LEN constant for
the size of the raw data in the response. This patch renames
commands::COMMAND_LEN to device::RESPONSE_DATA_LEN for consistency. It
also introduces the {Request,Response}Data type aliases for [u8;
{REQUEST,RESPONSE}_DATA_LEN].
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The execute_raw method does not have to be part of the Command trait.
In order to simplify the Command trait and to make future changes
easier, we remove the execute_raw method and replace it with the execute
function.
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Previously, we manually converted the request and response data from and
to byte slices. This patch adds the ssmarshal dependency that automates
the serialization and deserialization in the required format.
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This patch refactors the command execution. A command is represented by
a struct implementing the Command trait. The enum_cmd macro is used to
generate a mapping from the CommandId enum to a Command instance and to
execute the command. The request and response data is manually
converted from and to raw byte slices.
As we do not have a standard library, we cannot create a Box<Command>
from a CommandId. Instead, we directly delegate the execute method to
the corresponding Command.
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