thooge/esp32-nmea2000-obp60
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change api for getBoatDataValues

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wellenvogel
2021-12-05 21:25:12 +01:00
parent 461d4924ad
commit 7b4ab178c2
7 changed files with 57 additions and 42 deletions
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27
lib/exampletask/GwExampleTask.cpp
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@@ -51,9 +51,9 @@ void exampleTask(GwApi *api){
bool hasPosition=false;
bool hasPosition2=false;
LOG_DEBUG(GwLog::DEBUG,"example switch ist %s",exampleSwitch?"true":"false");
GwApi::StringList itemNames;
itemNames.push_back(F("Latitude"));
itemNames.push_back(F("Longitude"));
GwApi::BoatValue *longitude=new GwApi::BoatValue(F("Longitude"));
GwApi::BoatValue *latitude=new GwApi::BoatValue(F("Latitude"));
GwApi::BoatValue *valueList[]={longitude,latitude};
while(true){
delay(1000);
/*
@@ -96,30 +96,19 @@ void exampleTask(GwApi *api){
r->unref(); //delete the request
/** second example with string based functions to access boatData
uses STL vector and map - but does not need any request handling
this uses a reasonable amount of mmeory on the stack:
up to 2x the size of the list of names and 2x the size of the returned map
the default stack size of 2000 will not fit.
So be sure to use DECLARA_USERTASK_PARAM(taskFuntion,stackSize) and provide
a reasonable stack size (e.g. 4000 in this example).
This does not need the request handling approach
Finally it only makes sense to use one of the versions - either with the request
or with the ValueMap approach.
The request access to boatData gives you more options on how to access the data
and ueses less ressources and runtime but this one is maybe easier to understand and implement
**/
//fetch the current values of the items that we have in itemNames
GwApi::ValueMap boatItems=api->getBoatDataValues(itemNames);
//get the values out of the map
//the returned item is a map iterator
auto longitude=boatItems.find(itemNames[1]);
auto latitude=boatItems.find(itemNames[0]);
//check if the iterators are valid (i.e. the values we requested have been found in boatData)
if (longitude != boatItems.end() && latitude != boatItems.end()){
api->getBoatDataValues(2,valueList);
//check if the values are valid (i.e. the values we requested have been found in boatData)
if (longitude->valid && latitude->valid){
//both values are there - so we have a valid position
if (! hasPosition2){
//access to the values via iterator->second (iterator->first would be the name)
if (exampleSwitch) LOG_DEBUG(GwLog::LOG,"(2)position availale lat=%f, lon=%f",
latitude->second,longitude->second);
latitude->value,longitude->value);
hasPosition2=true;
}
}

8
lib/exampletask/GwExampleTask.h
View File

@@ -27,10 +27,10 @@ void exampleTask(GwApi *param);
void exampleInit(GwApi *param);
//make the task known to the core
//the task function should not return (unless you delete the task - see example code)
//we create our task with a stack size of 4000 bytes
DECLARE_USERTASK_PARAM(exampleTask,4000)
//if your task is happy with the default 2000 bytes of stack, replace the DECLARE_USERTASK_PARAM
//with: DECLARE_USERTASK(exampleTask);
DECLARE_USERTASK(exampleTask)
//if your task is not happy with the default 2000 bytes of stack, replace the DECLARE_USERTASK
//with: DECLARE_USERTASK_PARAM(exampleTask,4000);
//this would create our task with a stack size of 4000 bytes
//let the core call an init function before the