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Nullable timestamps for HA JSON

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This commit is contained in:
Gunnar Skjold
2025-12-29 10:05:25 +01:00
parent 2e4a0fc0a3
commit 7a358a20b8
7 changed files with 59 additions and 86 deletions
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1
lib/HomeAssistantMqttHandler/include/HomeAssistantMqttHandler.h
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@@ -79,6 +79,7 @@ private:
void publishPriceSensors(PriceService* ps);
void publishSystemSensors();
void publishThresholdSensors();
void toJsonIsoTimestamp(time_t t, char* buf, size_t buflen);
String boardTypeToString(uint8_t b) {
switch(b) {

2
lib/HomeAssistantMqttHandler/json/ha1.json
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@@ -1,4 +1,4 @@
{
"P" : %lu,
"t" : "%s"
"t" : %s
}

4
lib/HomeAssistantMqttHandler/json/ha2.json
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@@ -3,6 +3,6 @@
"tPO" : %.3f,
"tQI" : %.3f,
"tQO" : %.3f,
"rtc" : "%s",
"t" : "%s"
"rtc" : %s,
"t" : %s
}

2
lib/HomeAssistantMqttHandler/json/ha3.json
View File

@@ -12,5 +12,5 @@
"U1" : %.2f,
"U2" : %.2f,
"U3" : %.2f,
"t" : "%s"
"t" : %s
}

2
lib/HomeAssistantMqttHandler/json/ha4.json
View File

@@ -28,5 +28,5 @@
"tPO1" : %.3f,
"tPO2" : %.3f,
"tPO3" : %.3f,
"t" : "%s"
"t" : %s
}

131
lib/HomeAssistantMqttHandler/src/HomeAssistantMqttHandler.cpp
View File

@@ -28,7 +28,8 @@ void HomeAssistantMqttHandler::setHomeAssistantConfig(HomeAssistantConfig config
snprintf_P(json, 128, PSTR("[%s] "), config.discoveryNameTag);
sensorNamePrefix = String(json);
} else {
deviceName = F("AMS reader");
snprintf_P(json, 128, PSTR("AMS reader"));
deviceName = String(json);
sensorNamePrefix = "";
}
deviceModel = boardTypeToString(boardType);
@@ -52,20 +53,18 @@ void HomeAssistantMqttHandler::setHomeAssistantConfig(HomeAssistantConfig config
deviceUrl = String(json);
}
if(strlen(config.discoveryPrefix) > 0) {
snprintf_P(json, 128, PSTR("%s/status"), config.discoveryPrefix);
statusTopic = String(json);
snprintf_P(json, 128, PSTR("%s/sensor"), config.discoveryPrefix);
sensorTopic = String(json);
snprintf_P(json, 128, PSTR("%s/update"), config.discoveryPrefix);
updateTopic = String(json);
} else {
statusTopic = F("homeassistant/status");
sensorTopic = F("homeassistant/sensor");
updateTopic = F("homeassistant/update");
if(strlen(config.discoveryPrefix) == 0) {
snprintf_P(config.discoveryPrefix, 64, PSTR("homeassistant"));
}
snprintf_P(json, 128, PSTR("%s/status"), config.discoveryPrefix);
statusTopic = String(json);
snprintf_P(json, 128, PSTR("%s/sensor"), config.discoveryPrefix);
sensorTopic = String(json);
snprintf_P(json, 128, PSTR("%s/update"), config.discoveryPrefix);
updateTopic = String(json);
strcpy(this->mqttConfig.subscribeTopic, statusTopic.c_str());
}
@@ -134,12 +133,7 @@ bool HomeAssistantMqttHandler::publishList1(AmsData* data, EnergyAccounting* ea)
publishList1Sensors();
char pt[24];
memset(pt, 0, 24);
if(data->getPackageTimestamp() > 0) {
tmElements_t tm;
breakTime(data->getPackageTimestamp(), tm);
sprintf_P(pt, PSTR("%04d-%02d-%02dT%02d:%02d:%02dZ"), tm.Year+1970, tm.Month, tm.Day, tm.Hour, tm.Minute, tm.Second);
}
toJsonIsoTimestamp(data->getPackageTimestamp(), pt, sizeof(pt));
snprintf_P(json, BufferSize, HA1_JSON, data->getActiveImportPower(), pt);
return mqtt.publish(pubTopic + "/power", json);
@@ -150,12 +144,7 @@ bool HomeAssistantMqttHandler::publishList2(AmsData* data, EnergyAccounting* ea)
if(data->getActiveExportPower() > 0) publishList2ExportSensors();
char pt[24];
memset(pt, 0, 24);
if(data->getPackageTimestamp() > 0) {
tmElements_t tm;
breakTime(data->getPackageTimestamp(), tm);
sprintf_P(pt, PSTR("%04d-%02d-%02dT%02d:%02d:%02dZ"), tm.Year+1970, tm.Month, tm.Day, tm.Hour, tm.Minute, tm.Second);
}
toJsonIsoTimestamp(data->getPackageTimestamp(), pt, sizeof(pt));
snprintf_P(json, BufferSize, HA3_JSON,
data->getListId().c_str(),
@@ -181,20 +170,11 @@ bool HomeAssistantMqttHandler::publishList3(AmsData* data, EnergyAccounting* ea)
if(data->getActiveExportCounter() > 0.0) publishList3ExportSensors();
char mt[24];
memset(mt, 0, 24);
if(data->getMeterTimestamp() > 0) {
tmElements_t tm;
breakTime(data->getMeterTimestamp(), tm);
sprintf_P(mt, PSTR("%04d-%02d-%02dT%02d:%02d:%02dZ"), tm.Year+1970, tm.Month, tm.Day, tm.Hour, tm.Minute, tm.Second);
}
toJsonIsoTimestamp(data->getMeterTimestamp(), mt, sizeof(mt));
char pt[24];
memset(pt, 0, 24);
if(data->getPackageTimestamp() > 0) {
tmElements_t tm;
breakTime(data->getPackageTimestamp(), tm);
sprintf_P(pt, PSTR("%04d-%02d-%02dT%02d:%02d:%02dZ"), tm.Year+1970, tm.Month, tm.Day, tm.Hour, tm.Minute, tm.Second);
}
toJsonIsoTimestamp(data->getPackageTimestamp(), pt, sizeof(pt));
snprintf_P(json, BufferSize, HA2_JSON,
data->getActiveImportCounter(),
@@ -212,12 +192,7 @@ bool HomeAssistantMqttHandler::publishList4(AmsData* data, EnergyAccounting* ea)
if(data->getL1ActiveExportPower() > 0 || data->getL2ActiveExportPower() > 0 || data->getL3ActiveExportPower() > 0) publishList4ExportSensors();
char pt[24];
memset(pt, 0, 24);
if(data->getPackageTimestamp() > 0) {
tmElements_t tm;
breakTime(data->getPackageTimestamp(), tm);
sprintf_P(pt, PSTR("%04d-%02d-%02dT%02d:%02d:%02dZ"), tm.Year+1970, tm.Month, tm.Day, tm.Hour, tm.Minute, tm.Second);
}
toJsonIsoTimestamp(data->getPackageTimestamp(), pt, sizeof(pt));
snprintf_P(json, BufferSize, HA4_JSON,
data->getListId().c_str(),
@@ -307,13 +282,8 @@ bool HomeAssistantMqttHandler::publishRealtime(AmsData* data, EnergyAccounting*
time_t now = time(nullptr);
char pt[24];
memset(pt, 0, 24);
if(now > 0) {
tmElements_t tm;
breakTime(now, tm);
sprintf_P(pt, PSTR("%04d-%02d-%02dT%02d:%02d:%02dZ"), tm.Year+1970, tm.Month, tm.Day, tm.Hour, tm.Minute, tm.Second);
}
pos += snprintf_P(json+pos, BufferSize-pos, PSTR(",\"t\":\"%s\""), pt);
toJsonIsoTimestamp(now, pt, sizeof(pt));
pos += snprintf_P(json+pos, BufferSize-pos, PSTR(",\"t\":%s"), pt);
json[pos++] = '}';
json[pos] = '\0';
@@ -343,13 +313,8 @@ bool HomeAssistantMqttHandler::publishTemperatures(AmsConfiguration* config, HwT
time_t now = time(nullptr);
char pt[24];
memset(pt, 0, 24);
if(now > 0) {
tmElements_t tm;
breakTime(now, tm);
sprintf_P(pt, PSTR("%04d-%02d-%02dT%02d:%02d:%02dZ"), tm.Year+1970, tm.Month, tm.Day, tm.Hour, tm.Minute, tm.Second);
}
pos += snprintf_P(json+pos, BufferSize-pos, PSTR(",\"t\":\"%s\""), pt);
toJsonIsoTimestamp(now, pt, sizeof(pt));
pos += snprintf_P(json+pos, BufferSize-pos, PSTR(",\"t\":%s"), pt);
pos += snprintf_P(json+pos, BufferSize-pos, PSTR("}"));
bool ret = mqtt.publish(pubTopic + "/temperatures", json);
@@ -421,25 +386,34 @@ bool HomeAssistantMqttHandler::publishPrices(PriceService* ps) {
memset(ts1hr, 0, 24);
if(min1hrIdx > -1) {
time_t ts = now + (SECS_PER_HOUR * min1hrIdx);
tmElements_t tm;
tmElements_t tm;
breakTime(ts, tm);
sprintf_P(ts1hr, PSTR("%04d-%02d-%02dT%02d:00:00Z"), tm.Year+1970, tm.Month, tm.Day, tm.Hour);
tm.Minute = 0;
tm.Second = 0;
ts = makeTime(tm);
toJsonIsoTimestamp(ts, ts1hr, sizeof(ts1hr));
}
char ts3hr[24];
memset(ts3hr, 0, 24);
if(min3hrIdx > -1) {
time_t ts = now + (SECS_PER_HOUR * min3hrIdx);
tmElements_t tm;
tmElements_t tm;
breakTime(ts, tm);
sprintf_P(ts3hr, PSTR("%04d-%02d-%02dT%02d:00:00Z"), tm.Year+1970, tm.Month, tm.Day, tm.Hour);
tm.Minute = 0;
tm.Second = 0;
ts = makeTime(tm);
toJsonIsoTimestamp(ts, ts3hr, sizeof(ts3hr));
}
char ts6hr[24];
memset(ts6hr, 0, 24);
if(min6hrIdx > -1) {
time_t ts = now + (SECS_PER_HOUR * min6hrIdx);
tmElements_t tm;
tmElements_t tm;
breakTime(ts, tm);
sprintf_P(ts6hr, PSTR("%04d-%02d-%02dT%02d:00:00Z"), tm.Year+1970, tm.Month, tm.Day, tm.Hour);
tm.Minute = 0;
tm.Second = 0;
ts = makeTime(tm);
toJsonIsoTimestamp(ts, ts6hr, sizeof(ts6hr));
}
uint16_t pos = snprintf_P(json, BufferSize, PSTR("{\"id\":\"%s\",\"prices\":{\"import\":["), WiFi.macAddress().c_str());
@@ -468,7 +442,7 @@ bool HomeAssistantMqttHandler::publishPrices(PriceService* ps) {
}
pos--;
pos += snprintf_P(json+pos, BufferSize-pos, PSTR("],\"min\":%.4f,\"max\":%.4f,\"cheapest1hr\":\"%s\",\"cheapest3hr\":\"%s\",\"cheapest6hr\":\"%s\"}"),
pos += snprintf_P(json+pos, BufferSize-pos, PSTR("],\"min\":%.4f,\"max\":%.4f,\"cheapest1hr\":%s,\"cheapest3hr\":%s,\"cheapest6hr\":%s}"),
min == INT16_MAX ? 0.0 : min,
max == INT16_MIN ? 0.0 : max,
ts1hr,
@@ -477,13 +451,8 @@ bool HomeAssistantMqttHandler::publishPrices(PriceService* ps) {
);
char pt[24];
memset(pt, 0, 24);
if(now > 0) {
tmElements_t tm;
breakTime(now, tm);
sprintf_P(pt, PSTR("%04d-%02d-%02dT%02d:%02d:%02dZ"), tm.Year+1970, tm.Month, tm.Day, tm.Hour, tm.Minute, tm.Second);
}
pos += snprintf_P(json+pos, BufferSize-pos, PSTR(",\"t\":\"%s\""), pt);
toJsonIsoTimestamp(now, pt, sizeof(pt));
pos += snprintf_P(json+pos, BufferSize-pos, PSTR(",\"t\":%s"), pt);
json[pos++] = '}';
json[pos] = '\0';
@@ -502,14 +471,9 @@ bool HomeAssistantMqttHandler::publishSystem(HwTools* hw, PriceService* ps, Ener
time_t now = time(nullptr);
char pt[24];
memset(pt, 0, 24);
if(now > 0) {
tmElements_t tm;
breakTime(now, tm);
sprintf_P(pt, PSTR("%04d-%02d-%02dT%02d:%02d:%02dZ"), tm.Year+1970, tm.Month, tm.Day, tm.Hour, tm.Minute, tm.Second);
}
toJsonIsoTimestamp(now, pt, sizeof(pt));
snprintf_P(json, BufferSize, PSTR("{\"id\":\"%s\",\"name\":\"%s\",\"up\":%d,\"vcc\":%.3f,\"rssi\":%d,\"temp\":%.2f,\"version\":\"%s\",\"t\":\"%s\"}"),
snprintf_P(json, BufferSize, PSTR("{\"id\":\"%s\",\"name\":\"%s\",\"up\":%d,\"vcc\":%.3f,\"rssi\":%d,\"temp\":%.2f,\"version\":\"%s\",\"t\":%s}"),
WiFi.macAddress().c_str(),
mqttConfig.clientId,
(uint32_t) (millis64()/1000),
@@ -902,3 +866,14 @@ void HomeAssistantMqttHandler::onMessage(String &topic, String &payload) {
}
}
}
void HomeAssistantMqttHandler::toJsonIsoTimestamp(time_t t, char* buf, size_t buflen) {
memset(buf, 0, buflen);
if(t > 0) {
tmElements_t tm;
breakTime(t, tm);
snprintf_P(buf, buflen, PSTR("\"%04d-%02d-%02dT%02d:%02d:%02dZ\""), tm.Year+1970, tm.Month, tm.Day, tm.Hour, tm.Minute, tm.Second);
} else {
snprintf_P(buf, buflen, PSTR("null"));
}
}