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rewrite the interface to values from mqtt_data

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Marcus 2021-01-04 16:19:23 +01:00
parent 66b85b6ddf
commit a2ea85d6a1
1 changed files with 39 additions and 9 deletions
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48
tasmota/xdrv_92_pid.ino
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@ -182,17 +182,43 @@ void PID_Show_Sensor() {
// Update period is specified in TELE_PERIOD
// e.g. "{"Time":"2018-03-13T16:48:05","DS18B20":{"Temperature":22.0},"TempUnit":"C"}"
AddLog_P(LOG_LEVEL_INFO, PSTR("PID_Show_Sensor: mqtt_data: %s"), TasmotaGlobal.mqtt_data);
StaticJsonBuffer<400> jsonBuffer;
// force mqtt_data to read only to stop parse from overwriting it
JsonObject& data_json = jsonBuffer.parseObject((const char*)mqtt_data);
if (data_json.success()) {
const char* value = data_json["DS18B20"]["Temperature"];
AddLog_P(LOG_LEVEL_INFO, PSTR("length of MQTT MEssage: %d"), sizeof(TasmotaGlobal.mqtt_data));
// I need a copy of the mqtt buffer, because otherwise the actual
// message will be truncated after this call:
// JsonParser parser( (char*)TasmotaGlobal.mqtt_data);
char mqtt_buf[sizeof(TasmotaGlobal.mqtt_data)];
strncpy (mqtt_buf, TasmotaGlobal.mqtt_data, 300);
JsonParser parser( (char*)mqtt_buf);
JsonParserObject root = parser.getRootObject();
if (!root) {
AddLog_P(LOG_LEVEL_ERROR, PSTR("Invalid JSON in PID processing: %s"), mqtt_buf);
}
// Check if there is a named entry in the json:
JsonParserToken ds18b20_entry = root[PSTR("DS18B20")];
if (ds18b20_entry) {
// create a new object for the DS18B20 branch:
JsonParserObject ds18b20_obj = root[PSTR("DS18B20")].getObject();
if (ds18b20_obj) {
float ds18b20_temperature = 666; // use a temperature outside the range as a default
JsonParserToken ds18b20_temperature_token = ds18b20_obj[PSTR("Temperature")];
if (ds18b20_temperature_token) {
ds18b20_temperature = ds18b20_obj.getFloat(PSTR("Temperature"), 665);
char the_value[10];
dtostrfd(ds18b20_temperature, 3, the_value);
AddLog_P(LOG_LEVEL_INFO, PSTR("the_value: %s"), the_value);
} else {
AddLog_P(LOG_LEVEL_ERROR, PSTR("No Temperature found in DS18B20"));
}
// check that something was found and it contains a number
if (value != NULL && strlen(value) > 0 && (isdigit(value[0]) || (value[0] == '-' && isdigit(value[1])) ) ) {
AddLog_P(LOG_LEVEL_INFO, PSTR("PID_Show_Sensor: Temperature: %s"), value);
if (ds18b20_temperature < 130) { // maximal range of DS18B20 is 125
AddLog_P(LOG_LEVEL_INFO, PSTR("PID_Show_Sensor: Temperature: %f"), ds18b20_temperature);
// pass the value to the pid alogorithm to use as current pv
last_pv_update_secs = pid_current_time_secs;
pid.setPv(atof(value), last_pv_update_secs);
pid.setPv(ds18b20_temperature, last_pv_update_secs);
// also trigger running the pid algorithm if we have been told to run it each pv sample
if (update_secs == 0) {
// this runs it at the next second
@ -201,7 +227,10 @@ void PID_Show_Sensor() {
} else {
AddLog_P(LOG_LEVEL_INFO, PSTR("PID_Show_Sensor - no temperature found"));
}
} else {
} else {// if no ds18b20_obj found
AddLog_P(LOG_LEVEL_ERROR, PSTR("Invalid JSON in PID processing..."));
}
} else { // no ds18b20 key found
// parse failed
AddLog_P(LOG_LEVEL_INFO, PSTR("PID_Show_Sensor - json parse failed"));
}
@ -321,6 +350,7 @@ static void run_pid()
dtostrfd(power, 3, buf);
snprintf_P(TasmotaGlobal.mqtt_data, sizeof(TasmotaGlobal.mqtt_data), PSTR("{\"%s\":\"%s\"}"), "power", buf);
MqttPublishPrefixTopic_P(TELE, "PID", false);
AddLog_P (LOG_LEVEL_INFO, PSTR("power: %s"), buf);
#if defined PID_SHUTTER
// send output as a position from 0-100 to defined shutter