[gdk101] Use stack buffer to eliminate heap allocation for firmware version

2026-01-16 06:54:50 -07:00 · 2026-01-14 15:31:48 -10:00
1 changed files with 4 additions and 3 deletions
--- a/esphome/components/gdk101/gdk101.cpp
+++ b/esphome/components/gdk101/gdk101.cpp
@@ -163,9 +163,10 @@ bool GDK101Component::read_fw_version_(uint8_t *data) {
      return false;
    }

-    const std::string fw_version_str = str_sprintf("%d.%d", data[0], data[1]);
-
-    this->fw_version_text_sensor_->publish_state(fw_version_str);
+    // max 8: "255.255" (7 chars) + null
+    char buf[8];
+    snprintf(buf, sizeof(buf), "%d.%d", data[0], data[1]);
+    this->fw_version_text_sensor_->publish_state(buf);
  }
 #endif  // USE_TEXT_SENSOR
  return true;