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added Symbol::compareMaster to avoid updating last message change time when only the querying master was modified

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This commit is contained in:
john30
2015-05-14 09:50:28 +02:00
parent fae340f0be
commit d573fff746
2 changed files with 34 additions and 4 deletions
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src/lib/ebus/message.cpp
+19 -4
View File
@@ -318,9 +318,14 @@ result_t Message::prepareMaster(const unsigned char srcAddress, SymbolString& ma
result = m_data->write(input, pt_masterData, master, (unsigned char)(m_id.size() - 2), separator);
if (result != RESULT_OK)
return result;
if (master != m_lastMasterData) {
switch (master.compareMaster(m_lastMasterData)) {
case 1: // completely different
m_lastChangeTime = m_lastUpdateTime;
m_lastMasterData = master;
m_lastMasterData = masterData;
break;
case 2: // only master address is different
m_lastMasterData = masterData;
break;
}
masterData.addAll(master);
return result;
@@ -366,9 +371,14 @@ result_t Message::decode(const PartType partType, SymbolString& data,
time(&m_lastUpdateTime);
if (partType == pt_masterData) {
if (data != m_lastMasterData) {
switch (data.compareMaster(m_lastMasterData)) {
case 1: // completely different
m_lastChangeTime = m_lastUpdateTime;
m_lastMasterData = data;
break;
case 2: // only master address is different
m_lastMasterData = data;
break;
}
} else if (partType == pt_slaveData) {
if (data != m_lastSlaveData) {
@@ -397,9 +407,14 @@ result_t Message::decode(SymbolString& masterData, SymbolString& slaveData,
if (result == RESULT_EMPTY && !empty)
result = RESULT_OK; // OK if at least one part was non-empty
time(&m_lastUpdateTime);
if (masterData != m_lastMasterData) {
switch (masterData.compareMaster(m_lastMasterData)) {
case 1: // completely different
m_lastChangeTime = m_lastUpdateTime;
m_lastMasterData = masterData;
break;
case 2: // only master address is different
m_lastMasterData = masterData;
break;
}
if (slaveData != m_lastSlaveData) {
m_lastChangeTime = m_lastUpdateTime;
src/lib/ebus/symbol.h
+15
View File
@@ -93,6 +93,21 @@ public:
*/
bool operator!=(SymbolString& other) { return m_unescapeState!=other.m_unescapeState || m_data!=other.m_data; }
/**
* Compares this instance to the other instance while treating both as master data (i.e. starting with the master address and ending with the CRC).
* @param other the other instance.
* @return 0 if this instance is equal to the other instance (i.e. both escaped or both unescaped and same symbols),
* 1 if this instance is completely different to the other instance,
* 2 if this instance only differs from the other instance in the first byte (the master address).
*/
int compareMaster(SymbolString& other) {
if (m_unescapeState!=other.m_unescapeState || m_data.size()!=other.m_data.size()) return 1;
if (m_data==other.m_data) return 0;
if (m_data.size()==1) return 2;
if (equal(m_data.begin()+1, m_data.end()-1, other.m_data.begin()+1)) return 2;
return 1;
}
/**
* Appends a the symbol to the end of the symbol string and escapes/unescapes it if necessary.
* @param value the symbol to append.