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| author | Gregory Nutt <gnutt@nuttx.org> | 2015-01-08 07:56:00 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2015-01-08 07:56:00 -0600 |
| commit | 5641020b65caf9c50dcf7d45887c0c4b1745d284 (patch) | |
| tree | 137ac251b65188d0457cd952b25a89f34b78ca44 /nuttx/ChangeLog | |
| parent | 33ef2079d63853ca3d4fba682e2be6e3d980a2ba (diff) | |
| download | nuttx-5641020b65caf9c50dcf7d45887c0c4b1745d284.tar.gz nuttx-5641020b65caf9c50dcf7d45887c0c4b1745d284.tar.bz2 nuttx-5641020b65caf9c50dcf7d45887c0c4b1745d284.zip | |
Tiva Timer: Extend timer register definitions to handle other chips
Diffstat (limited to 'nuttx/ChangeLog')
| -rwxr-xr-x | nuttx/ChangeLog | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog index b8f8d8bb3..a3f14f0e3 100755 --- a/nuttx/ChangeLog +++ b/nuttx/ChangeLog @@ -9375,9 +9375,9 @@ * arch/arm/src/stm32/stm32_sdio.c, drivers/mmcsd/mmcsd_sdio.c and Kconfig, and include/nuttx/sdio.h: MMCSD SDIO: Add support for a new SDWAIT_WRCOMPLETE condition. The previous logic used a busy-wait loop - to pool the car d R1 start to determine when the card was ready for + to poll the card R1 status to determine when the card was ready for the next transfer. That busy-wait can be quite long -- up to hundreds - of milliseconds. And alternative is to look the the SD D0 pin which + of milliseconds. An alternative is to look the the SD D0 pin which will change state when the card is no longer busy. This change avoids the busy-wait poll by reconfiguring the SD D0 pin as a GPIO interrupt, then waiting for the card to become ready without taking up CPU |