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Added a isBusy() method to SPI calls to allow non-blocking polling of… #279

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Merged
merged 1 commit into from
Dec 28, 2020
Merged

Added a isBusy() method to SPI calls to allow non-blocking polling of… #279

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6 changes: 6 additions & 0 deletions libraries/SPI/SPI.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -458,6 +458,12 @@ void SPIClass::waitForTransfer(void) {
while(dma_busy);
}

/* returns the current DMA transfer status to allow non-blocking polling */
bool SPIClass::isBusy(void) {
return dma_busy;
}


// End DMA-based SPI transfer() code ---------------------------------------

void SPIClass::attachInterrupt() {
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1 change: 1 addition & 0 deletions libraries/SPI/SPI.h
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Expand Up @@ -120,6 +120,7 @@ class SPIClass {
void transfer(const void* txbuf, void* rxbuf, size_t count,
bool block = true);
void waitForTransfer(void);
bool isBusy(void);

// Transaction Functions
void usingInterrupt(int interruptNumber);
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