Commit Graph

16 Commits

Author SHA1 Message Date
David J. Fiddes
b847f41e24 SPI: Ensure all read-only data pointers are marked as const (#3356)
This changes all SPI functions that take data pointers which are
not modified so that the declaration is const. This allows them
to be used with const data (i.e. held in flash). No functional
changes are required.

The defnitions of spiWrite() and spiTransferBytes()  in
esp-hal-spi.h/c have been updated to be consistent.

Tests:
 - Build a simple sketch using SPI.writePattern() and
   SPI.transferBytes()  which uses const data and verify that the
   attached device functions as expected.
2019-10-14 20:39:27 +03:00
Me No Dev
9eaeeb660c
Change the first argument of SPI::wrteBytes to be const (#3242)
fixes: https://github.com/espressif/arduino-esp32/issues/3241
2019-09-22 09:36:32 +03:00
Arjan Filius
b5f317010c Fixed Arduino SPI/Ethernet compile issue as described in issue #1623 (#2136)
* #1623, implementing suggested change

Splitted suggested fix issue #1623 in a header and source part. Dit not completely dive into the code.
Giving data twice as parameter feels wrong, but it compiles, and i can succesfully use the W5500 with SPI with this fix.
Doesn't compile without.

* #1623, implementing suggested change SPI.h/cpp

Splitted suggested fix issue #1623 in a header and source part. Dit not completely dive into the code.
Giving data twice as parameter feels wrong, but it compiles, and i can succesfully use the W5500 with SPI with this fix.
Doesn't compile without.
2018-12-02 18:15:01 +01:00
me-no-dev
2fe965259a "fix" SPI 2018-07-03 21:23:04 +02:00
me-no-dev
4e5cbdaa7f Add declarations for all Serial, SPI and Wire buses 2018-07-03 20:41:03 +02:00
BuzzRage
f5246cf4c1 Adding a getClockDivider function (#1355)
* Adding getClockDivider function

* indentation correction
2018-05-14 13:08:27 +02:00
zipiju
3198f25c19 Set HSPI ports by default when HSPI is selected (#874)
When user selected HSPI with SPIClass name(HSPI) ESP was, by default,
still using VSPI ports (the ones defined in pins_arduino.h).
With this change when user selects HSPI then HSPI default ports will be
used.
If user won't specify HSPI then VSPI default ports will be used.
If user will specify SCLK, MOSI, MISO and SS with SPI.begin() then user
defined ports will be used no matter if VSPI or HSPI is selected.
With this change fe. SD library can use default HSPI ports. It was
possible to
pass HSPI SPI instance to SD lib, however even then it was using VSPI
ports which were (probably) GPIO matrixed to HSPI.
2017-11-28 11:12:39 +01:00
me-no-dev
2b6d47ac17 Fix race in SPI endTransaction 2017-09-27 16:27:44 +08:00
Glen McGillan
2eaf846134 Spi pattern fix (#502)
* Add files via upload

Calls to writePattern() don't send the desired number of bytes when the pattern size doesn't divide evenly into the hardware FIFO size (e.g. sending 18-bit RGB data, 11 patterns take 63 bytes, so 1/64th of the data is never sent).

* Add files via upload

Remove white space changes.
2017-07-31 22:50:57 +03:00
me-no-dev
a70954111b Fix compilation issues is certain situations. 2017-03-19 11:27:58 +02:00
me-no-dev
01b2ef780a Set proper default pins for SPI
Some boards have different default pins for SPI

Thanks @ladyada
2017-03-19 11:14:38 +02:00
me-no-dev
3cbc405edf Add helper for sending 16bit color buffers 2017-02-14 11:58:04 +02:00
me-no-dev
d0232d126a SPI implement transaction locking
Use transactions to skip mutex locks for reads and writes
2017-02-14 04:15:38 +02:00
me-no-dev
6a058275e7 Remove unimplemented methods from SPI 2017-02-09 20:40:56 +02:00
me-no-dev
de017a8a1b Optimize SPI transfers to take one lock and do not return until completed 2017-02-01 02:14:36 +02:00
me-no-dev
5f3a205955 initial import 2016-10-06 07:09:44 -06:00