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SPI implement transaction locking

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Use transactions to skip mutex locks for reads and writes
This commit is contained in:
me-no-dev
2017-02-14 04:15:34 +02:00
parent 9bd5de11a7
commit d0232d126a
4 changed files with 449 additions and 109 deletions
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26
libraries/SPI/src/SPI.h
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@ -36,6 +36,19 @@ public:
class SPIClass
{
private:
int8_t _spi_num;
spi_t * _spi;
bool _use_hw_ss;
int8_t _sck;
int8_t _miso;
int8_t _mosi;
int8_t _ss;
uint32_t _div;
uint32_t _freq;
bool _inTransaction;
void writePattern_(uint8_t * data, uint8_t size, uint8_t repeat);
public:
SPIClass(uint8_t spi_bus=HSPI);
void begin(int8_t sck=-1, int8_t miso=-1, int8_t mosi=-1, int8_t ss=-1);
@ -61,17 +74,8 @@ public:
void write32(uint32_t data);
void writeBytes(uint8_t * data, uint32_t size);
void writePattern(uint8_t * data, uint8_t size, uint32_t repeat);
private:
int8_t _spi_num;
spi_t * _spi;
bool _use_hw_ss;
int8_t _sck;
int8_t _miso;
int8_t _mosi;
int8_t _ss;
uint32_t _div;
uint32_t _freq;
void writePattern_(uint8_t * data, uint8_t size, uint8_t repeat);
spi_t * bus(){ return _spi; }
};
extern SPIClass SPI;