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spi_master: add docs for dummy check when both mosi and miso are set

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Armando
2020-06-30 16:10:18 +08:00
parent e58ce2141d
commit 9d1c5df7ab
1 changed files with 3 additions and 1 deletions
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docs/en/api-reference/peripherals/spi_master.rst
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@@ -523,7 +523,9 @@ Known Issues
2. Full-duplex transactions are not compatible with the *dummy bit workaround*, hence the frequency is limited. See :ref:`dummy 2. Full-duplex transactions are not compatible with the *dummy bit workaround*, hence the frequency is limited. See :ref:`dummy
bit speed-up workaround <dummy_bit_workaround>`. bit speed-up workaround <dummy_bit_workaround>`.
3. ``cs_ena_pretrans`` is not compatible with the command and address phases of full-duplex transactions. 3. ``dummy_bits`` in :cpp:type:`spi_device_interface_config_t` and :cpp:type:`spi_transaction_ext_t` are not available when SPI read and write phases are both enabled (regardless of full duplex or half duplex mode).
4. ``cs_ena_pretrans`` is not compatible with the command and address phases of full-duplex transactions.
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