Fix I2C stop condition when receiving 1 byte with USCI #226
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
According to MSP430x2xxx family guide, page 473: If a master wants to receive a single byte only, the UCTXSTP bit must be set while the byte is being received. For this case, the UCTXSTT may be polled to determine when it is cleared: BIS.B #UCTXSTT,&UCBOCTL1 ;Transmit START cond. POLL_STT BIT.B #UCTXSTT,&UCBOCTL1 ;Poll UCTXSTT bit JC POLL_STT ;When cleared, BIS.B #UCTXSTP,&UCB0CTL1 ;transmit STOP cond. Thread on 43oh: http://forum.43oh.com/topic/3154-i2c-issues/
robertinant
added a commit
that referenced
this pull request
Apr 29, 2013
Fix I2C stop condition when receiving 1 byte with USCI
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Outdated suggestions cannot be applied.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.
According to MSP430x2xxx family guide, page 473:
If a master wants to receive a single byte only, the UCTXSTP bit must be
set while the byte is being received. For this case, the UCTXSTT may be
polled to determine when it is cleared:
Thread on 43oh: http://forum.43oh.com/topic/3154-i2c-issues/