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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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7
hal/src/main/native/sim/MockData/SPIData.cpp
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@@ -167,14 +167,15 @@ int32_t SPIData::Read(uint8_t* buffer, int32_t count) {
return count;
}
int32_t SPIData::Write(uint8_t* dataToSend, int32_t sendSize) {
int32_t SPIData::Write(const uint8_t* dataToSend, int32_t sendSize) {
std::lock_guard<wpi::mutex> lock(m_dataMutex);
InvokeCallback(m_writeCallbacks, "Write", dataToSend, sendSize);
InvokeCallback(m_writeCallbacks, "Write", const_cast<uint8_t*>(dataToSend),
sendSize);
return sendSize;
}
int32_t SPIData::Transaction(uint8_t* dataToSend, uint8_t* dataReceived,
int32_t SPIData::Transaction(const uint8_t* dataToSend, uint8_t* dataReceived,
int32_t size) {
std::lock_guard<wpi::mutex> lock(m_dataMutex);
return size;