From 9d1c5df7abef7ead161b936907fd33dde6c36883 Mon Sep 17 00:00:00 2001 From: Armando Date: Tue, 30 Jun 2020 16:10:18 +0800 Subject: [PATCH] spi_master: add docs for dummy check when both mosi and miso are set --- docs/en/api-reference/peripherals/spi_master.rst | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/docs/en/api-reference/peripherals/spi_master.rst b/docs/en/api-reference/peripherals/spi_master.rst index adbf52ec03..5b9b003f3e 100644 --- a/docs/en/api-reference/peripherals/spi_master.rst +++ b/docs/en/api-reference/peripherals/spi_master.rst @@ -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 bit speed-up 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. Application Example