Fix card size with CSD v2.00 #71
Open
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Byte 7 of register CSD v2.00 is so composed: the first 2 bits for "reserved3" and the remaining 6 bits for "c_size_high". Because of how the bits are arranged on little-endian systems, "c_size_high" must be positioned before "reserved3" in order to have "c_size_high", "c_size_mid" and "c_size_low" arraged contiguously.
Type of csd.v2.c_size_mid is uint8_t (8 bits). In order to left shift by 8 bits csd.v2.c_size_mid without losing informations (bits), is necessary to cast the variable to uint32_t.
Travis tests have failedHey @giuseppedandrea, TravisBuddy Request Identifier: dc865a00-e7b5-11e9-8e12-4bc655cb216a |
|
|
per1234
added
type: imperfection
|
This would supersede #69 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fix position of "c_size_high" in struct "csd2_t" and cast 8 bits variable ("csd.v2.c_size_mid") to allow left shift by 8 in cardSize() method.