/**
* Common initialization.
*/
void AnalogChannel::InitChannel(UINT32 slot, UINT32 channel)
{
Resource::CreateResourceObject(&channels, kAnalogModules * kAnalogChannels);
CheckAnalogModule(slot);
CheckAnalogChannel(slot);
channels->Allocate(AnalogModule::SlotToIndex(slot) * kAnalogModules + channel - 1);
m_channel = channel;
m_module = AnalogModule::GetInstance(slot);
if (IsAccumulatorChannel())
{
m_accumulator = new tAccumulator(channel - 1, &status);
m_accumulatorOffset=0;
}
else
{
m_accumulator = NULL;
}
}
/**
* Get a sample from the output of the oversample and average engine for the channel.
*
* The sample is 12-bit + the value configured in SetOversampleBits().
* The value configured in SetAverageBits() will cause this value to be averaged 2**bits number of samples.
* This is not a sliding window. The sample will not change until 2**(OversamplBits + AverageBits) samples
* have been acquired from the module on this channel.
* Use GetAverageVoltage() to get the analog value in calibrated units.
*
* @param channel Channel number to read.
* @return A sample from the oversample and average engine for the channel.
*/
INT32 AnalogModule::GetAverageValue(UINT32 channel)
{
INT32 value;
CheckAnalogChannel(channel);
tAI::tReadSelect readSelect;
readSelect.Channel = channel - 1;
readSelect.Module = SlotToIndex(m_slot);
readSelect.Averaged = true;
{
Synchronized sync(m_registerWindowSemaphore);
m_module->writeReadSelect(readSelect, &status);
m_module->strobeLatchOutput(&status);
value = m_module->readOutput(&status);
}
wpi_assertCleanStatus(status);
return value;
}
/**
* Get a sample from the output of the oversample and average engine for the channel.
*
* The sample is 12-bit + the value configured in SetOversampleBits().
* The value configured in SetAverageBits() will cause this value to be averaged 2**bits number of samples.
* This is not a sliding window. The sample will not change until 2**(OversamplBits + AverageBits) samples
* have been acquired from the module on this channel.
* Use GetAverageVoltage() to get the analog value in calibrated units.
*
* @param channel Channel number to read.
* @return A sample from the oversample and average engine for the channel.
*/
INT32 AnalogModule::GetAverageValue(UINT32 channel)
{
INT32 value;
CheckAnalogChannel(channel);
tAI::tReadSelect readSelect;
readSelect.Channel = channel - 1;
readSelect.Module = m_moduleNumber - 1;
readSelect.Averaged = true;
tRioStatusCode localStatus = NiFpga_Status_Success;
{
Synchronized sync(m_registerWindowSemaphore);
m_module->writeReadSelect(readSelect, &localStatus);
m_module->strobeLatchOutput(&localStatus);
value = m_module->readOutput(&localStatus);
}
wpi_setError(localStatus);
return value;
}
/**
* Common initialization.
*/
void AnalogChannel::InitChannel(UINT8 moduleNumber, UINT32 channel)
{
char buf[64];
Resource::CreateResourceObject(&channels, kAnalogModules * kAnalogChannels);
if (!CheckAnalogModule(moduleNumber))
{
snprintf(buf, 64, "Analog Module %d", moduleNumber);
wpi_setWPIErrorWithContext(ModuleIndexOutOfRange, buf);
return;
}
if (!CheckAnalogChannel(channel))
{
snprintf(buf, 64, "Analog Channel %d", channel);
wpi_setWPIErrorWithContext(ChannelIndexOutOfRange, buf);
return;
}
snprintf(buf, 64, "Analog Input %d (Module: %d)", channel, moduleNumber);
if (channels->Allocate((moduleNumber - 1) * kAnalogChannels + channel - 1, buf) == ~0ul)
{
CloneError(channels);
return;
}
m_channel = channel;
m_module = AnalogModule::GetInstance(moduleNumber);
if (IsAccumulatorChannel())
{
tRioStatusCode localStatus = NiFpga_Status_Success;
m_accumulator = tAccumulator::create(channel - 1, &localStatus);
wpi_setError(localStatus);
m_accumulatorOffset=0;
}
else
{
m_accumulator = NULL;
}
LiveWindow::GetInstance()->AddActuator("AnalogChannel",channel, GetModuleNumber(), this);
nUsageReporting::report(nUsageReporting::kResourceType_AnalogChannel, channel, GetModuleNumber() - 1);
}
