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ESP32 - Update firmware through AsyncWebServer
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| AsyncWebServer server_http(80); | |
| const char header_html[] PROGMEM = "<!DOCTYPE html><html><head><meta http-equiv='Content-Type' content='text/html; charset=utf-8'/><meta name='viewport' content='width=device-width, initial-scale=1, minimum-scale=1.0, shrink-to-fit=no'><title>GreenPonik.com - WebView</title></head><body>"; | |
| const char footer_html[] PROGMEM = "</body></html>"; | |
| const char update_html[] PROGMEM = "<h1>Only .bin file</h1><form method='POST' action='/updt' enctype='multipart/form-data'><input type='file' name='update' required><input type='submit' value='Run Update'></form>"; | |
| void setup() | |
| { | |
| /* ... */ | |
| //Update through vebview | |
| server_http.on("/updt", HTTP_GET, [](AsyncWebServerRequest *request) { | |
| String view_html; | |
| view_html += header_html; | |
| view_html += "<h1>Actual Firmware Release: " + FW_VERSION + "</h1>"; | |
| view_html += update_html; | |
| view_html += footer_html; | |
| request->send(200, "text/html", view_html); | |
| }); | |
| server_http.on("/updt", HTTP_POST, [](AsyncWebServerRequest *request) { | |
| espShouldReboot = !Update.hasError(); | |
| AsyncWebServerResponse *response = request->beginResponse(200, "text/html", espShouldReboot ? "<h1><strong>Update DONE</strong></h1><br><a href='/'>Return Home</a>" : "<h1><strong>Update FAILED</strong></h1><br><a href='/updt'>Retry?</a>"); | |
| response->addHeader("Connection", "close"); | |
| request->send(response); }, [](AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final) { | |
| if (!index) | |
| { | |
| Serial.printf("Update Start: %s\n", filename.c_str()); | |
| if (!Update.begin((ESP.getFreeSketchSpace() - 0x1000) & 0xFFFFF000)) | |
| { | |
| Update.printError(Serial); | |
| } | |
| } | |
| if (!Update.hasError()) | |
| { | |
| if (Update.write(data, len) != len) | |
| { | |
| Update.printError(Serial); | |
| } | |
| } | |
| if (final) | |
| { | |
| if (Update.end(true)) | |
| { | |
| Serial.printf("Update Success: %uB\n", index + len); | |
| } | |
| else | |
| { | |
| Update.printError(Serial); | |
| } | |
| } | |
| }); | |
| server_http.begin(); | |
| /* ... */ | |
| } | |
| void loop() | |
| { | |
| if (espShouldReboot) | |
| { | |
| Serial.println(F("Esp reboot ...")); | |
| delay(100); | |
| ESP.restart(); | |
| } | |
| } |
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