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J. Nick Koston
c622ee6a6e
When flashing an ESP32 via serial, esptool prints the detected crystal frequency. This change parses that output in real-time and warns the user if it doesn't match the configured CONFIG_XTAL_FREQ in sdkconfig. This is particularly important for ESP32-C2 (ESP8684) boards where some modules use 26MHz crystals but the default sdkconfig assumes 40MHz, causing UART logging and other clock-dependent features to silently fail. Also adds a generic line_callbacks mechanism to RedirectText so future output-based checks can be added without modifying the class directly. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
