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SPI: Provide byte[] JNI interfaces.

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This avoids a direct byte buffer allocation on every read/write/transaction
for the byte[] variants.

Also change spiGetAccumulatorOutput() to directly set the AccumulatorResult
object, avoiding a ByteBuffer allocation.

Changes HAL SPI interfaces to use const for dataToSend.

Fixes #733.
This commit is contained in:
Peter Johnson
2017-11-14 00:00:45 -08:00
parent df7c1389de
commit 6307d41002
11 changed files with 168 additions and 73 deletions
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5
hal/src/main/native/sim/SPI.cpp
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@@ -14,11 +14,12 @@ using namespace hal;
void HAL_InitializeSPI(HAL_SPIPort port, int32_t* status) {
SimSPIData[port].SetInitialized(true);
}
int32_t HAL_TransactionSPI(HAL_SPIPort port, uint8_t* dataToSend,
int32_t HAL_TransactionSPI(HAL_SPIPort port, const uint8_t* dataToSend,
uint8_t* dataReceived, int32_t size) {
return SimSPIData[port].Transaction(dataToSend, dataReceived, size);
}
int32_t HAL_WriteSPI(HAL_SPIPort port, uint8_t* dataToSend, int32_t sendSize) {
int32_t HAL_WriteSPI(HAL_SPIPort port, const uint8_t* dataToSend,
int32_t sendSize) {
return SimSPIData[port].Write(dataToSend, sendSize);
}
int32_t HAL_ReadSPI(HAL_SPIPort port, uint8_t* buffer, int32_t count) {