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esp32/machine_sdcard: Add "freq" keyword arg to SDCard constructor.

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To allow high speed access.
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2020-02-25 23:09:59 +08:00
committed by Damien George
parent 2d1fef7096
commit 1662a0b06f
2 changed files with 9 additions and 1 deletions
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4
docs/library/machine.SDCard.rst
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@@ -23,7 +23,7 @@ arguments that might need to be set in order to use either a non-standard slot
or a non-standard pin assignment. The exact subset of arguments supported will
vary from platform to platform.
.. class:: SDCard(slot=1, width=1, cd=None, wp=None, sck=None, miso=None, mosi=None, cs=None)
.. class:: SDCard(slot=1, width=1, cd=None, wp=None, sck=None, miso=None, mosi=None, cs=None, freq=20000000)
This class provides access to SD or MMC storage cards using either
a dedicated SD/MMC interface hardware or through an SPI channel.
@@ -50,6 +50,8 @@ vary from platform to platform.
- *mosi* can be used to specify an SPI mosi pin.
- *cs* can be used to specify an SPI chip select pin.
- *freq* selects the SD/MMC interface frequency in Hz (only supported on the ESP32).
Implementation-specific details
-------------------------------