Commit Graph

11 Commits

Author SHA1 Message Date
Michael (XIAO Xufeng)
8cddfa35b8 spi: fix the crash when callbacks are not in the IRAM
Introduced in 9c23b8e5 and 4f87a62f. To get higher speed, menuconfig
options are added to put ISR and other functions into the IRAM.  The
interrupt flag ESP_INTR_FLAG_IRAM is also mistakenly set when the ISR is
put into the IRAM. However callbacks, which are wrote by the user, are
called in the master and slave ISR. The user may not be aware of that
these callbacks are not disabled during flash operations. Any cache miss
during flash operation will cause panic.

Essentially IRAM functions and intrrupt flag ESP_INTR_FLAG_IRAM are
different, the latter means not disabling the ISR during flash
operations.  New bus_config flag intr_flags is offered to help set the
interrupt attribute, including priority level, SHARED, IRAM (not
disabled during flash operations).  It introduced a small BREAK to
IDFv3.1 (but the same as IDFv3.0) that the user has to manually set IRAM
flag now (therefore he's aware of the IRAM thing) to void the ISR being
disabled during flash operations.
2018-11-20 13:07:13 +08:00
Michael (Xiao Xufeng)
4af51833f3 spi_master: add new polling mode to decrease time cost each transaction 2018-09-20 19:46:46 +08:00
michael
404e99965d spi_master: change high part config to allow transactions of 64 bytes 2018-08-16 18:55:09 +08:00
Angus Gratton
e5d2406b1d Merge branch 'bugfix/spi_cs_setup_fulldup' into 'master'
fix(spi_master): allow to use cs_ena_pretrans in full duplex mode without…

See merge request idf/esp-idf!2576
2018-07-16 16:30:36 +08:00
Michael (XIAO Xufeng)
3d23fe9a61 feature(spi): provide macro to write multi-byte data straightly
resolves https://github.com/espressif/esp-idf/issues/2062
2018-07-02 15:34:47 +08:00
michael
8676830e61 fix(spi_master): allow to use cs_ena_pretrans in full duplex mode without command and address phases 2018-06-25 04:30:14 +00:00
Michael (XIAO Xufeng)
9377575415 docs(spi_master): fix wavedrom image and comment mistake 2018-06-15 17:38:27 +08:00
michael
5cf7d3768d feat(spi_master): fine tune the timing of SPI 2018-06-06 06:08:39 +00:00
Angus Gratton
b90ad81f22 driver: Add notes to SPI driver docs about thread safety 2018-05-07 09:03:48 +08:00
michael
e0b05c29f1 doc(spi_master): add descriptions about the SPI master speed
Closes https://github.com/espressif/esp-idf/issues/1542, Closes https://github.com/espressif/esp-idf/issues/1008
2018-04-02 12:44:19 +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