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Tiva Timer: Extend timer register definitions to handle other chips

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Gregory Nutt
2015-01-08 07:56:00 -06:00
parent 1b01114652
commit 54bf159bdb
2 changed files with 291 additions and 226 deletions
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ChangeLog
+2 -2
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@@ -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
arch/arm/src/tiva/chip/tiva_timer.h
+289 -224
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