Markus Sattler
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dcc899a1b5
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some speed optimizations
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2015-05-08 15:33:48 +02:00 |
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Markus Sattler
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7c33efc3d8
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fix SPI run on system clock
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2015-05-08 15:30:27 +02:00 |
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Markus Sattler
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d7a88c3ea3
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use a function to calculate best match clock register for SPI
TEST:
Frequency: 1000000 -> [0x009C1001] EQU: 0 Pre: 39 N: 1 H: 0 L: 1 - Back Calculated Frequency: 1000000
Frequency: 4000000 -> [0x00001001] EQU: 0 Pre: 0 N: 1 H: 0 L: 1 - Back Calculated Frequency: 40000000
Frequency: 2000000 -> [0x00041001] EQU: 0 Pre: 1 N: 1 H: 0 L: 1 - Back Calculated Frequency: 20000000
Frequency: 1600000 -> [0x00004002] EQU: 0 Pre: 0 N: 4 H: 0 L: 2 - Back Calculated Frequency: 16000000
Frequency: 1610000 -> [0x00004002] EQU: 0 Pre: 0 N: 4 H: 0 L: 2 - Back Calculated Frequency: 16000000
Frequency: 1000000 -> [0x000C1001] EQU: 0 Pre: 3 N: 1 H: 0 L: 1 - Back Calculated Frequency: 10000000
Frequency: 8000000 -> [0x00101001] EQU: 0 Pre: 4 N: 1 H: 0 L: 1 - Back Calculated Frequency: 8000000
Frequency: 5000000 -> [0x001C1001] EQU: 0 Pre: 7 N: 1 H: 0 L: 1 - Back Calculated Frequency: 5000000
Frequency: 4000000 -> [0x00241001] EQU: 0 Pre: 9 N: 1 H: 0 L: 1 - Back Calculated Frequency: 4000000
Frequency: 2000000 -> [0x004C1001] EQU: 0 Pre: 19 N: 1 H: 0 L: 1 - Back Calculated Frequency: 2000000
Frequency: 1000000 -> [0x009C1001] EQU: 0 Pre: 39 N: 1 H: 0 L: 1 - Back Calculated Frequency: 1000000
Frequency: 500000 -> [0x013C1001] EQU: 0 Pre: 79 N: 1 H: 0 L: 1 - Back Calculated Frequency: 500000
Frequency: 250000 -> [0x027C1001] EQU: 0 Pre: 159 N: 1 H: 0 L: 1 - Back Calculated Frequency: 250000
Frequency: 125000 -> [0x04FC1001] EQU: 0 Pre: 319 N: 1 H: 0 L: 1 - Back Calculated Frequency: 125000
Frequency: 6666666 -> [0x00141001] EQU: 0 Pre: 5 N: 1 H: 0 L: 1 - Back Calculated Frequency: 6666666
Frequency: 6000000 -> [0x00181001] EQU: 0 Pre: 6 N: 1 H: 0 L: 1 - Back Calculated Frequency: 5714285
Frequency: 3000000 -> [0x00202001] EQU: 0 Pre: 8 N: 2 H: 0 L: 1 - Back Calculated Frequency: 2962962
Frequency: 100 -> [0x7FFFF020] EQU: 0 Pre: 8191 N: 63 H: 0 L: 32 - Back Calculated Frequency: 152
Frequency: 125000 -> [0x04FC1001] EQU: 0 Pre: 319 N: 1 H: 0 L: 1 - Back Calculated Frequency: 125000
Frequency: 16457 -> [0x25F81001] EQU: 0 Pre: 2430 N: 1 H: 0 L: 1 - Back Calculated Frequency: 16454
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2015-05-08 00:48:08 +02:00 |
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Markus Sattler
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7f4a10062b
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update README
add some docu and todo
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2015-05-07 20:48:59 +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 |
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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 |
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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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Ivan Grokhotkov
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dfbc499627
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Fix slashes in SPI library
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2015-04-03 08:18:23 +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 |
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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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