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Fix: Prevent wrong values of alarm data because of non-atomic transaction and fix calculation of getEntryCount()

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Thomas Basler
2023-07-31 21:54:08 +02:00
parent 14305a9f12
commit 698ecbcd53
3 changed files with 37 additions and 1 deletions
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29
lib/Hoymiles/src/parser/AlarmLogParser.cpp
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@@ -86,6 +86,18 @@ const std::array<const AlarmMessage_t, ALARM_MSG_COUNT> AlarmLogParser::_alarmMe
{ AlarmMessageType_t::ALL, 9000, "Microinverter is suspected of being stolen" },
} };
#define HOY_SEMAPHORE_TAKE() \
do { \
} while (xSemaphoreTake(_xSemaphore, portMAX_DELAY) != pdPASS)
#define HOY_SEMAPHORE_GIVE() xSemaphoreGive(_xSemaphore)
AlarmLogParser::AlarmLogParser()
: Parser()
{
_xSemaphore = xSemaphoreCreateMutex();
HOY_SEMAPHORE_GIVE(); // release before first use
}
void AlarmLogParser::clearBuffer()
{
memset(_payloadAlarmLog, 0, ALARM_LOG_PAYLOAD_SIZE);
@@ -102,8 +114,21 @@ void AlarmLogParser::appendFragment(uint8_t offset, uint8_t* payload, uint8_t le
_alarmLogLength += len;
}
void AlarmLogParser::beginAppendFragment()
{
HOY_SEMAPHORE_TAKE();
}
void AlarmLogParser::endAppendFragment()
{
HOY_SEMAPHORE_GIVE();
}
uint8_t AlarmLogParser::getEntryCount()
{
if (_alarmLogLength < 2) {
return 0;
}
return (_alarmLogLength - 2) / ALARM_LOG_ENTRY_SIZE;
}
@@ -128,6 +153,8 @@ void AlarmLogParser::getLogEntry(uint8_t entryId, AlarmLogEntry_t* entry)
int timezoneOffset = getTimezoneOffset();
HOY_SEMAPHORE_TAKE();
uint32_t wcode = (uint16_t)_payloadAlarmLog[entryStartOffset] << 8 | _payloadAlarmLog[entryStartOffset + 1];
uint32_t startTimeOffset = 0;
if (((wcode >> 13) & 0x01) == 1) {
@@ -143,6 +170,8 @@ void AlarmLogParser::getLogEntry(uint8_t entryId, AlarmLogEntry_t* entry)
entry->StartTime = (((uint16_t)_payloadAlarmLog[entryStartOffset + 4] << 8) | ((uint16_t)_payloadAlarmLog[entryStartOffset + 5])) + startTimeOffset + timezoneOffset;
entry->EndTime = ((uint16_t)_payloadAlarmLog[entryStartOffset + 6] << 8) | ((uint16_t)_payloadAlarmLog[entryStartOffset + 7]);
HOY_SEMAPHORE_GIVE();
if (entry->EndTime > 0) {
entry->EndTime += (endTimeOffset + timezoneOffset);
}