david gauchard
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3cc12b1e08
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arduino API's SPI::transfer(void*, size) (optimized) (#4925)
* SPI::transfer(void*, size) (optimized)
* spi: transfer(): fix checking size
* spi: transferBytes_: 32bits miso transfer
* spi: transferBytes_: fix declaration
* spi: transferBytes: add comments, reduce diff
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2018-07-27 10:44:02 -04:00 |
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david gauchard
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559cb35025
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spi: use const for output buffers (#4552)
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2018-03-23 13:39:20 -03:00 |
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jpmendoza
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af0f5ed956
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Issue #1062: Implement support for HSPI overlap mode.
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2017-05-08 03:04:11 -05:00 |
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Clemens Kirchgatterer
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18297458be
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allows global object instances be switch off with defines (#2344)
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2016-08-01 11:21:50 +08:00 |
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WereCatf
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a64a694f6d
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Speed up SPI.writePattern()
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2016-04-16 20:02:06 +03:00 |
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John Doe
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d87bb1e12e
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spi clock does not depend on cpu clock
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2015-06-02 01:13:15 +03:00 |
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John Doe
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6ab3c76e03
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register and clock changes
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2015-06-02 00:11:20 +03:00 |
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Markus Sattler
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2eea25873d
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fix SPI speed calculation @160Mhz Clock
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2015-05-15 13:42:30 +02:00 |
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Markus Sattler
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27f45a205a
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SD:
- optimize SPI usage 148% write speed (24kB/s -> 37kB/s) and 127% read speed (121kB/s -> 155kB/s) at 8MHz
- add clock frequency as parameter for begin(csPin, frequency)
- SD @80MHz write: 84kB/s read: 231kB/s
SPI add functions:
- void write32(uint32_t data);
- void write32(uint32_t data, bool msb);
- void transferBytes(uint8_t * out, uint8_t * in, uint32_t size);
Adafruit_ILI9341:
- code clean
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2015-05-10 17:34:16 +02:00 |
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Markus Sattler
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070f2b3a14
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many speed optimizations in Adafruit_ILI9341 lib (3x times faster)
add new SPI function:
void write(uint8_t data);
void write16(uint16_t data);
void write16(uint16_t data, bool msb);
void writeBytes(uint8_t * data, uint32_t size);
void writePattern(uint8_t * data, uint8_t size, uint32_t repeat);
Adafruit_ILI9341:
| Benchmark | Old (ms) | New (ms) | Speedup |
| ------------------------- | -------- | -------- | ----------- |
| Screen fill | 1248369 | 278707 | +347,91% |
| Text | 86102 | 53785 | +60,09% |
| Lines | 825400 | 536374 | +53,89% |
| Horiz/Vert Lines | 101875 | 24653 | +313,24% |
| Rectangles (outline) | 65720 | 17295 | +279,99% |
| Rectangles (filled) | 2592250 | 579157 | +347,59% |
| Circles (filled) | 411475 | 179454 | +129,29% |
| Circles (outline) | 360002 | 233584 | +54,12% |
| Triangles (outline) | 261772 | 170118 | +53,88% |
| Triangles (filled) | 866951 | 246237 | +252,08% |
| Rounded rects (outline) | 154131 | 81570 | +88,96% |
| Rounded rects (filled) | 2828112 | 660983 | +327,86% |
| | | | |
| Total | 9802159 | 3061917 | +220,13% |
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2015-05-09 16:19:32 +02:00 |
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Markus Sattler
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5cbcd1da3c
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rework Adafruit_ILI9341 complete now uses the new SPI implementation
tested with example graphicstest_esp8266
add missing define to SPI.h
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2015-05-08 14:45:47 +02:00 |
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Markus Sattler
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49fc1980fe
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add back SPI_CLOCK_DIVx defines may needed by some library
Note:
better use SPI.setFrequency()
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2015-05-07 22:16:51 +02:00 |
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Markus Sattler
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ee5def9c8c
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add CPHA support for SPI
- tested with logic analyzer
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2015-05-07 19:48:55 +02:00 |
|
Markus Sattler
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163858dc44
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fix use SPI.beginTransaction crash
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2015-05-07 19:25:25 +02:00 |
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Markus Sattler
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6599a9f52a
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add SPIClass::transfer16 (needed by some display libs)
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2015-05-04 18:11:46 +02:00 |
|
ficeto
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fbec557ddb
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Importing my changes
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2015-04-30 20:48:50 +03:00 |
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Andrey Filimonov
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4626a9df80
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Initial ESP8266 HW SPI implementation
ILI9341 lib as a client for SPI lib
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2015-04-01 07:10:31 +03:00 |
|
Ivan Grokhotkov
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ee762f3150
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Add WIP SPI library
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2015-01-21 04:19:04 +03:00 |
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