mirror of
https://github.com/wpilibsuite/allwpilib
synced 2026-06-22 01:11:42 +00:00
7023013c4b
These changes both simplify the Java code and improve performance across the JNI boundary. This also fixes the AnalogCrossConnectTest by adding delays to setInterruptHigh() and setInterruptLow() to ensure the change in voltage has time to propagate and extends the timeouts in AbstractInterruptTest. Detailed changes: Hoisted status checks to C. This avoids the need to create direct byte buffers (expensive) and significantly simplifies the Java code. The C code now directly generates the exception or reports the error to the DS. The JVM pointer is now a global across the JNI, initialized by the OnLoad function, avoiding the need for some of the class-specific initializers to get this pointer for callbacks. Opaque pointers (such as ports) are now passed as long values rather than with a ByteBuffer wrapper. Added extern "C" to source files. This allows earlier detection of JNI definition mismatches to the Java source headers. Changed JNI signatures to more closely match HAL signatures (in particular, boolean is now universally used instead of byte for HAL bool, which cleans up mapping back and forth to 1/0 from true/false). Change-Id: I4ea0032cabb0871cd74106a3a70d947258c29d2d
116 lines
3.8 KiB
C++
116 lines
3.8 KiB
C++
#include <jni.h>
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#include <assert.h>
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#include "Log.hpp"
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#include "edu_wpi_first_wpilibj_hal_I2CJNI.h"
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#include "HAL/Digital.hpp"
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#include "HALUtil.h"
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// set the logging level
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TLogLevel i2cJNILogLevel = logWARNING;
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#define I2CJNI_LOG(level) \
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if (level > i2cJNILogLevel) ; \
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else Log().Get(level)
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extern "C" {
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/*
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* Class: edu_wpi_first_wpilibj_hal_I2CJNI
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* Method: i2cInitialize
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* Signature: (B)V
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*/
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JNIEXPORT void JNICALL Java_edu_wpi_first_wpilibj_hal_I2CJNI_i2CInitialize
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(JNIEnv * env, jclass, jbyte value)
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{
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I2CJNI_LOG(logDEBUG) << "Calling I2CJNI i2CInititalize";
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I2CJNI_LOG(logDEBUG) << "Port: " << (jint) value;
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int32_t status = 0;
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i2CInitialize(value, &status);
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I2CJNI_LOG(logDEBUG) << "Status = " << status;
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CheckStatus(env, status);
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}
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/*
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* Class: edu_wpi_first_wpilibj_hal_I2CJNI
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* Method: i2CTransaction
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* Signature: (BBLjava/nio/ByteBuffer;BLjava/nio/ByteBuffer;B)I
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*/
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JNIEXPORT jint JNICALL Java_edu_wpi_first_wpilibj_hal_I2CJNI_i2CTransaction
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(JNIEnv * env, jclass, jbyte port, jbyte address, jobject dataToSend, jbyte sendSize, jobject dataReceived, jbyte receiveSize)
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{
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I2CJNI_LOG(logDEBUG) << "Calling I2CJNI i2CTransaction";
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I2CJNI_LOG(logDEBUG) << "Port = " << (jint)port;
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I2CJNI_LOG(logDEBUG) << "Address = " << (jint)address;
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uint8_t* dataToSendPtr = nullptr;
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if (dataToSend != 0) {
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dataToSendPtr = (uint8_t*)env->GetDirectBufferAddress(dataToSend);
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}
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I2CJNI_LOG(logDEBUG) << "DataToSendPtr = " << (jint*)dataToSendPtr;
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I2CJNI_LOG(logDEBUG) << "SendSize = " << (jint)sendSize;
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uint8_t* dataReceivedPtr = (uint8_t*)env->GetDirectBufferAddress(dataReceived);
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I2CJNI_LOG(logDEBUG) << "DataReceivedPtr = " << (jint*)dataReceivedPtr;
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I2CJNI_LOG(logDEBUG) << "ReceiveSize = " << (jint)receiveSize;
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jint returnValue = i2CTransaction(port, address, dataToSendPtr, sendSize, dataReceivedPtr, receiveSize);
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I2CJNI_LOG(logDEBUG) << "ReturnValue = " << returnValue;
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return returnValue;
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}
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/*
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* Class: edu_wpi_first_wpilibj_hal_I2CJNI
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* Method: i2CWrite
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* Signature: (BBLjava/nio/ByteBuffer;B)I
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*/
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JNIEXPORT jint JNICALL Java_edu_wpi_first_wpilibj_hal_I2CJNI_i2CWrite
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(JNIEnv * env, jclass, jbyte port, jbyte address, jobject dataToSend, jbyte sendSize)
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{
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I2CJNI_LOG(logDEBUG) << "Calling I2CJNI i2CWrite";
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I2CJNI_LOG(logDEBUG) << "Port = " << (jint)port;
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I2CJNI_LOG(logDEBUG) << "Address = " << (jint)address;
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uint8_t* dataToSendPtr = nullptr;
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if (dataToSend != 0) {
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dataToSendPtr = (uint8_t*)env->GetDirectBufferAddress(dataToSend);
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}
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I2CJNI_LOG(logDEBUG) << "DataToSendPtr = " << dataToSendPtr;
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I2CJNI_LOG(logDEBUG) << "SendSize = " << (jint)dataToSend;
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jint returnValue = i2CWrite(port, address, dataToSendPtr, sendSize);
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I2CJNI_LOG(logDEBUG) << "ReturnValue = " << (jint)returnValue;
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return returnValue;
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}
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/*
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* Class: edu_wpi_first_wpilibj_hal_I2CJNI
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* Method: i2CRead
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* Signature: (BBLjava/nio/ByteBuffer;B)I
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*/
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JNIEXPORT jint JNICALL Java_edu_wpi_first_wpilibj_hal_I2CJNI_i2CRead
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(JNIEnv * env, jclass, jbyte port, jbyte address, jobject dataReceived, jbyte receiveSize)
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{
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I2CJNI_LOG(logDEBUG) << "Calling I2CJNI i2CRead";
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I2CJNI_LOG(logDEBUG) << "Port = " << port;
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I2CJNI_LOG(logDEBUG) << "Address = " << address;
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uint8_t* dataReceivedPtr = (uint8_t*)env->GetDirectBufferAddress(dataReceived);
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I2CJNI_LOG(logDEBUG) << "DataReceivedPtr = " << dataReceivedPtr;
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I2CJNI_LOG(logDEBUG) << "ReceiveSize = " << receiveSize;
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jint returnValue = i2CRead(port, address, dataReceivedPtr, receiveSize);
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I2CJNI_LOG(logDEBUG) << "ReturnValue = " << returnValue;
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return returnValue;
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}
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/*
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* Class: edu_wpi_first_wpilibj_hal_I2CJNI
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* Method: i2CClose
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* Signature: (B)V
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*/
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JNIEXPORT void JNICALL Java_edu_wpi_first_wpilibj_hal_I2CJNI_i2CClose
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(JNIEnv *, jclass, jbyte value)
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{
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I2CJNI_LOG(logDEBUG) << "Calling I2CJNI i2CClose";
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i2CClose(value);
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}
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} // extern "C"
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