How to list multiple calendar event in a template

Configuration
,
137

I used an SSD1306 OLED screen
I took the liberty of using your solution, my code looks as follows:

      - id: page9
        lambda: |-
          // Print next four collection
          char *strFam = strdup(id(cal_garbage).state.c_str());
          char delim[] = "~";

          char *nxtStrFam = strtok(strFam, delim);

          if (nxtStrFam != NULL && strlen(nxtStrFam) > 0) {
            it.printf(4, 0, id(font3), TextAlign::TOP_LEFT, "%s", nxtStrFam);
          }

          nxtStrFam = strtok(NULL, delim);

          if (nxtStrFam != NULL && strlen(nxtStrFam) > 0) {
            it.printf(128, 0, id(font3), TextAlign::TOP_RIGHT, "%s", nxtStrFam);
          }

          nxtStrFam = strtok(NULL, delim);

          if (nxtStrFam != NULL && strlen(nxtStrFam) > 0) {
            it.printf(0, 17, id(font3), TextAlign::TOP_LEFT, "%s", nxtStrFam);
          }

          nxtStrFam = strtok(NULL, delim);

          if (nxtStrFam != NULL && strlen(nxtStrFam) > 0) {
            it.printf(128, 17, id(font3), TextAlign::TOP_RIGHT, "%s", nxtStrFam);
          }

          nxtStrFam = strtok(NULL, delim);

          if (nxtStrFam != NULL && strlen(nxtStrFam) > 0) {
            it.printf(0, 34, id(font3), TextAlign::TOP_LEFT, "%s", nxtStrFam);
          }

          nxtStrFam = strtok(NULL, delim);

          if (nxtStrFam != NULL && strlen(nxtStrFam) > 0) {
            it.printf(128, 34, id(font3), TextAlign::TOP_RIGHT, "%s", nxtStrFam);
          }

          nxtStrFam = strtok(NULL, delim);

          if (nxtStrFam != NULL && strlen(nxtStrFam) > 0) {
            it.printf(0, 63, id(font3), TextAlign::BASELINE_LEFT, "%s", nxtStrFam);
          }

          nxtStrFam = strtok(NULL, delim);

          if (nxtStrFam != NULL && strlen(nxtStrFam) > 0) {
            it.printf(128, 63, id(font3), TextAlign::BASELINE_RIGHT, "%s", nxtStrFam);
          }

this is one of ten screens that shows/renders every 93 seconds.
Unfortunately, the problem I have with it is that this code overflows the RAM memory and the ESP32 restarts approximately every 3 hours and 20 minutes.

ESP32_reboot_2
ESP32_reboot_2725×603 45.4 KB

Does this code generate some variable that fills the RAM memory and should be removed during the next rendering cycle?

My configuration.yaml.:

  - trigger:
      - platform: time_pattern
        # This will update every hour
        hours: "/6"
    sensor:
      - name: Garbage Data
        icon: mdi:calendar
        state: "OK"
        attributes:
          cal_garbage: >-
            {% set items = state_attr('sensor.garbage_scheduled_events', 'scheduled_events') | sort(attribute='start') %}
            {%- for item in items -%}
            {% set delta = (item.start) | as_datetime | as_local - today_at() %}
            {%- if delta.days == 0 -%}
            {% set start = "Dzisiaj " %}
            {%- elif delta.days == 1 -%}
            {% set start = "Jutro " %}
            {%- elif delta.days == 2 -%}
            {% set start = "Pojutrze " %}
            {%- else -%}
            {% set start = as_timestamp(item.start) | timestamp_custom('%d %b ', default=0) %}
            {%- endif -%}
            {{start + '~'}}
            {{item.summary + '~' }}
            {% endfor %}

Have you ever had a problem with RAM overflowing?

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