esp32-nmea2000-obp60/lib/xdrmappings/GwXDRMappings.cpp

125 lines
3.2 KiB
C++

#include "GwXDRMappings.h"
#include "N2kMessages.h"
double PtoBar(double v){
if (N2kIsNA(v)) return v;
return v/100000L;
}
double BarToP(double v){
if (N2kIsNA(v)) return v;
return v*100000L;
}
GwXDRType * types[]={
new GwXDRType(GwXDRType::PRESS,"P","P"),
new GwXDRType(GwXDRType::PRESS,"P","B",
PtoBar,
BarToP),
new GwXDRType(GwXDRType::VOLT,"U","V"),
new GwXDRType(GwXDRType::AMP,"I","A"),
NULL
};
String GwXDRMappingDef::toString(){
String rt="";
rt+=String((int)category);
rt+=",";
rt+=String((int)direction);
rt+=",";
rt+=String(selector);
rt+=",";
rt+=String(field);
rt+=",";
rt+=String(instanceMode);
rt+=",";
rt+=String(instanceId);
return rt;
}
bool GwXDRMappingDef::handleToken(String tok,int index,GwXDRMappingDef *def){
switch(index){
int i;
case 0:
//category
i=tok.toInt();
if (i< XDRTEMP || i > XDRENGINE) return false;
def->category=(GwXDRCategory)i;
return true;
case 1:
//direction
i=tok.toInt();
if (i < GwXDRMappingDef::M_DISABLED ||
i>= GwXDRMappingDef::M_LAST) return false;
def->direction=(GwXDRMappingDef::Direction)i;
return true;
case 2:
//selector
//TODO: check selector?
i=tok.toInt();
def->selector=i;
return true;
case 3:
//field
i=tok.toInt();
def->field=i;
return true;
case 4:
//instance mode
i=tok.toInt();
if (i < GwXDRMappingDef::IS_SINGLE ||
i>= GwXDRMappingDef::IS_LAST) return false;
def->instanceMode=(GwXDRMappingDef::InstanceMode)i;
return true;
case 5:
//instance id
i=tok.toInt();
def->instanceId=i;
return true;
default:
break;
}
return false;
}
GwXDRMappingDef *GwXDRMappingDef::fromString(String s){
int found=0;
int last=0;
int index=0;
GwXDRMappingDef *rt=new GwXDRMappingDef();
while ((found = s.indexOf(',',last)) >= 0){
String tok=s.substring(last,found);
if (!handleToken(tok,index,rt)){
delete rt;
return NULL;
}
last=found+1;
index++;
}
if (last < s.length()){
String tok=s.substring(last);
if (!handleToken(tok,index,rt)){
delete rt;
return NULL;
}
}
return rt;
}
GwXDRMappings::GwXDRMappings(GwLog *logger, GwConfigHandler *config)
{
this->logger = logger;
this->config = config;
}
#define MAX_MAPPINGS 100
void GwXDRMappings::begin(){
char namebuf[10];
for (int i=0;i<MAX_MAPPINGS;i++){
snprintf(namebuf,9,"XDR%d",i);
namebuf[9]=0;
GwConfigInterface *cfg=config->getConfigItem(String(namebuf));
if (cfg){
GwXDRMappingDef *mapping=GwXDRMappingDef::fromString(cfg->asCString());
if (mapping){
LOG_DEBUG(GwLog::DEBUG,"read xdr mapping %s",mapping->toString().c_str());
}
}
}
}