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docs: remove no longer existent limitation of spi slave

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Armando
2020-08-20 21:00:54 +08:00
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parent 96b3e7f405
commit 725a8e6de0
1 changed files with 0 additions and 7 deletions
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docs/en/api-reference/peripherals/spi_slave.rst
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@@ -87,13 +87,6 @@ The amount of data that the driver can read or write to the buffers is limited b
If the length of the transmission is greater than the buffer length, only the initial number of bits specified in the :cpp:member:`length` member will be sent and received. In this case, :cpp:member:`trans_len` is set to :cpp:member:`length` instead of the actual transaction length. To meet the actual transaction length requirements, set :cpp:member:`length` to a value greater than the maximum :cpp:member:`trans_len` expected. If the transmission length is shorter than the buffer length, only the data equal to the length of the buffer will be transmitted.
.. only:: esp32
.. Warning::
The ESP32 DMA hardware has a limit to the number of bytes sent by a Host and received by a Device. The transaction length must be longer than 8 bytes and a multiple of 4 bytes; otherwise, the SPI hardware might fail to receive the last 1 to 7 bytes.
.. only:: esp32
GPIO Matrix and IO_MUX