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Posted to dev@nuttx.apache.org by GitBox <gi...@apache.org> on 2019/12/24 15:44:14 UTC
[GitHub] [incubator-nuttx] davids5 opened a new pull request #6: STM32F7 and
STM32H7 SDMMC internal pull up usage fixed
davids5 opened a new pull request #6: STM32F7 and STM32H7 SDMMC internal pull up usage fixed
URL: https://github.com/apache/incubator-nuttx/pull/6
- Code was flawed in that the Pins are defined with the
pullups in the definition. Since there are no alterntes pins
there is no way to remove them. So not enabling the CONFIG
pull up did nothing as did enabling them.
- This is now a compile time feature as there was no reason for
it to be a run time. It wasted both flash and ram.
- The code ignored the use of D0 for ready detection causing
3X+ the chatter.
No Internal PU and 100K External Note 2.5 us of chatter
With Internal PU and 100K External Note 0.7 us of chatter
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[GitHub] [incubator-nuttx] patacongo merged pull request #6: STM32F7 and
STM32H7 SDMMC internal pull up usage fixed
Posted by GitBox <gi...@apache.org>.
patacongo merged pull request #6: STM32F7 and STM32H7 SDMMC internal pull up usage fixed
URL: https://github.com/apache/incubator-nuttx/pull/6
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