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SD:

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- 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
This commit is contained in:
Markus Sattler
2015-05-10 17:34:16 +02:00
parent 539aa19305
commit 27f45a205a
5 changed files with 135 additions and 20 deletions
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5
libraries/SPI/SPI.h
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@ -75,13 +75,18 @@ public:
void write(uint8_t data);
void write16(uint16_t data);
void write16(uint16_t data, bool msb);
void write32(uint32_t data);
void write32(uint32_t data, bool msb);
void writeBytes(uint8_t * data, uint32_t size);
void writePattern(uint8_t * data, uint8_t size, uint32_t repeat);
void transferBytes(uint8_t * out, uint8_t * in, uint32_t size);
void endTransaction(void);
private:
bool useHwCs;
void writeBytes_(uint8_t * data, uint8_t size);
void writePattern_(uint8_t * data, uint8_t size, uint8_t repeat);
void transferBytes_(uint8_t * out, uint8_t * in, uint8_t size);
inline void setDataBits(uint16_t bits);
};
extern SPIClass SPI;