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Bindings: Add LiveData and LiveDataMessage support in Python bindings

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This commit is contained in:
Thomas Stoddard
2026-01-05 10:40:14 -05:00
committed by Kyle Schwarz
parent 000036f745
commit 977677e3af
10 changed files with 318 additions and 20 deletions
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examples/cpp/livedata/src/LiveDataExample.cpp
+31 -14
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@@ -29,7 +29,7 @@ int main() {
}
std::cout << "OK" << std::endl;
// Create a subscription message for the GPS signals
// Create a subscription message for the GPS signals and TIME_SINCE_MSG
std::cout << "\tSending a live data subscribe command... ";
auto msg = std::make_shared<icsneo::LiveDataCommandMessage>();
msg->appendSignalArg(icsneo::LiveDataValueType::GPS_LATITUDE);
@@ -37,6 +37,7 @@ int main() {
msg->appendSignalArg(icsneo::LiveDataValueType::GPS_ACCURACY);
msg->appendSignalArg(icsneo::LiveDataValueType::DAQ_ENABLE);
msg->appendSignalArg(icsneo::LiveDataValueType::MANUAL_TRIGGER);
msg->appendSignalArg(icsneo::LiveDataValueType::TIME_SINCE_MSG);
msg->cmd = icsneo::LiveDataCommand::SUBSCRIBE;
msg->handle = icsneo::LiveDataUtil::getNewHandle();
msg->updatePeriod = std::chrono::milliseconds(100);
@@ -44,6 +45,9 @@ int main() {
// Transmit the subscription message
ret = device->subscribeLiveData(msg);
std::cout << (ret ? "OK" : "FAIL") << std::endl;
if (!ret) {
std::cout << "\t\tError: " << icsneo::GetLastError() << std::endl;
}
// Register a handler that uses the data after it arrives every ~100ms
std::cout << "\tStreaming messages for 3 seconds... " << std::endl << std::endl;
@@ -53,19 +57,21 @@ int main() {
switch(ldMsg->cmd) {
case icsneo::LiveDataCommand::STATUS: {
auto msg2 = std::dynamic_pointer_cast<icsneo::LiveDataStatusMessage>(message);
std::cout << "[Handle] " << ldMsg->handle << std::endl;
std::cout << "[Requested Command] " << msg2->requestedCommand << std::endl;
std::cout << "[Status] " << msg2->status << std::endl << std::endl;
std::cout << "[STATUS Message]" << std::endl;
std::cout << " Handle: " << ldMsg->handle << std::endl;
std::cout << " Requested Command: " << msg2->requestedCommand << std::endl;
std::cout << " Status: " << msg2->status << std::endl << std::endl;
break;
}
case icsneo::LiveDataCommand::RESPONSE: {
auto valueMsg = std::dynamic_pointer_cast<icsneo::LiveDataValueMessage>(message);
if((valueMsg->handle == msg->handle) && (valueMsg->values.size() == msg->args.size()))
{
std::cout << "[Handle] " << msg->handle << std::endl;
std::cout << "[Values] " << valueMsg->numArgs << std::endl;
std::cout << "[Response Message]" << std::endl;
std::cout << " Handle: " << msg->handle << std::endl;
std::cout << " Number of Values: " << valueMsg->numArgs << std::endl;
for(uint32_t i = 0; i < valueMsg->numArgs; ++i) {
std::cout << "[" << msg->args[i]->valueType << "] ";
std::cout << " [" << msg->args[i]->valueType << "] ";
auto scaledValue = icsneo::LiveDataUtil::liveDataValueToDouble(*valueMsg->values[i]);
std::cout << scaledValue << std::endl;
}
@@ -86,22 +92,33 @@ int main() {
setValMsg->cmd = icsneo::LiveDataCommand::SET_VALUE;
setValMsg->handle = msg->handle;
// Convert the value format
icsneo::LiveDataValue ldValueDAQEnable;
icsneo::LiveDataValue ldValueManTrig;
if (!icsneo::LiveDataUtil::liveDataDoubleToValue(val / 3, ldValueDAQEnable) ||
!icsneo::LiveDataUtil::liveDataDoubleToValue(val, ldValueManTrig)) {
auto ldValueDAQEnable = icsneo::LiveDataUtil::liveDataDoubleToValue(val / 3);
auto ldValueManTrig = icsneo::LiveDataUtil::liveDataDoubleToValue(val);
auto ldValueTimeSinceMsg = icsneo::LiveDataUtil::liveDataDoubleToValue(val);
if (!ldValueDAQEnable || !ldValueManTrig || !ldValueTimeSinceMsg) {
std::cout << "\tError: Failed to convert values" << std::endl;
break;
}
setValMsg->appendSetValue(icsneo::LiveDataValueType::DAQ_ENABLE, ldValueDAQEnable);
setValMsg->appendSetValue(icsneo::LiveDataValueType::MANUAL_TRIGGER, ldValueManTrig);
device->setValueLiveData(setValMsg);
setValMsg->appendSetValue(icsneo::LiveDataValueType::DAQ_ENABLE, *ldValueDAQEnable);
setValMsg->appendSetValue(icsneo::LiveDataValueType::MANUAL_TRIGGER, *ldValueManTrig);
setValMsg->appendSetValue(icsneo::LiveDataValueType::TIME_SINCE_MSG, *ldValueTimeSinceMsg);
std::cout << "\tSetting values: DAQ_ENABLE=" << (val / 3)
<< ", MANUAL_TRIGGER=" << val
<< ", TIME_SINCE_MSG=" << val << std::endl;
if (!device->setValueLiveData(setValMsg)) {
std::cout << "\tError setting values: " << icsneo::GetLastError() << std::endl;
}
++val;
// Run handler for three seconds to observe the signal data
std::this_thread::sleep_for(std::chrono::seconds(3));
}
// Unsubscribe from the GPS signals and run handler for one more second
// Unsubscription only requires a valid in-use handle, in this case from our previous subscription
std::cout << "\tUnsubscribing... ";
ret = device->unsubscribeLiveData(msg->handle);
std::cout << (ret ? "OK" : "FAIL") << std::endl;
// The handler should no longer print values
std::this_thread::sleep_for(std::chrono::seconds(1));
device->removeMessageCallback(handler);