/**
* Is the channel attached to an accumulator.
*
* @return The analog input is attached to an accumulator.
*/
bool AnalogInput::IsAccumulatorChannel() const {
if (StatusIsFatal()) return false;
int32_t status = 0;
bool isAccum = isAccumulatorChannel(m_port, &status);
wpi_setErrorWithContext(status, getHALErrorMessage(status));
return isAccum;
}
/*
* Class: edu_wpi_first_wpilibj_hal_AnalogJNI
* Method: isAccumulatorChannel
* Signature: (Ljava/nio/ByteBuffer;Ljava/nio/IntBuffer;)B
*/
JNIEXPORT jbyte JNICALL Java_edu_wpi_first_wpilibj_hal_AnalogJNI_isAccumulatorChannel
(JNIEnv * env, jclass, jobject id, jobject status)
{
ANALOGJNI_LOG(logDEBUG) << "isAccumulatorChannel";
void ** javaId = (void**)env->GetDirectBufferAddress(id);
ANALOGJNI_LOG(logDEBUG) << "Analog Ptr = " << *javaId;
jint * statusPtr = (jint*)env->GetDirectBufferAddress(status);
// isAccumulaotrChanel returns a boolean
char vOut = isAccumulatorChannel(*javaId, statusPtr) ? 1 : 0;
//The C++ equivalent of a jbyte is a char
jbyte returnValue = vOut;
ANALOGJNI_LOG(logDEBUG) << "Status = " << *statusPtr;
ANALOGJNI_LOG(logDEBUG) << "AnalogOffset = " << returnValue;
return returnValue;
}
/**
* Initialize the analog input port using the given port object.
*/
void* initializeAnalogInputPort(void* port_pointer, int32_t *status) {
initializeAnalog(status);
Port* port = (Port*) port_pointer;
// Initialize port structure
AnalogPort* analog_port = new AnalogPort();
analog_port->port = *port;
if (isAccumulatorChannel(analog_port, status)) {
analog_port->accumulator = tAccumulator::create(port->pin, status);
} else analog_port->accumulator = NULL;
// Set default configuration
analogInputSystem->writeScanList(port->pin, port->pin, status);
setAnalogAverageBits(analog_port, kDefaultAverageBits, status);
setAnalogOversampleBits(analog_port, kDefaultOversampleBits, status);
return analog_port;
}
