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3 Commits

Author SHA1 Message Date
michael
58955a79a2 spi_slave: improve the timing configuration 
SPI Slave
===========

- Correct the configuration of mode 0~3 using new config in the TRM
- Split the workaround for DMA in mode 0/2 out of normal config, to make it clear.
- Update timing and speed document for the SPI slave.

Resolves https://github.com/espressif/esp-idf/issues/1346, https://github.com/espressif/esp-idf/issues/2393
 2019-01-26 00:10:41 +08:00
michael
cfba157fdd spi_slave: add valid check for DMA buffers 
The DMA cannot receive data correctly when the buffer address is not
WORD aligned. Currently we only check whether the buffer is in the DRAM
region.

The DMA always write in WORDs, so the length arguments should also be
multiples of 32 bits.

A check is added to see whether the buffer is WORD aligned and has valid
length.
 2018-11-26 03:49:26 +00:00
krzychb
097adc3a33 Moved files into separate folders per 'en' and 'zh_CN' language version and linked 'zh_CN' files back to 'en' files if translation is not yet available 2018-03-13 21:57:08 +01:00