* Take a one-shot image and save it to the SD card. * This function writes to a file compliant with the following SD library, * and the SD card must

* Repeatedly takes a one-shot image at a specified cycle and saves it to the * SD card. Saves the captured image to a file whose name consists of the

* Generate an HTML <button> element. The onclick behavior depends on * the code held in factionf member. * @return An HTML string. */

* The upload function that overrides the RequestHandler class * attached with ESP8266WebServer. * This function invokes the upload handler registere