I am using 3 Esp32 modules. One being master and other two being nodes. Nodes are connecting to the master's AP. Master is connected with GSM module to execute the web api. Master esp is having a Async Webserver which takes the http requests from the nodes and executes the appropriate web api. This web api returns the result and finally this result is sent back to the node as the response to the http request.
While running this code, Randomly on any request i face wdt reset.
Hence my question is, how should i handle the wdt resets and keep my program running softly.
E (32706) task_wdt: Task watchdog got triggered. The following tasks did not reset the watchdog in time:
E (32706) task_wdt: - async_tcp (CPU 0/1)
E (32706) task_wdt: Tasks currently running:
E (32706) task_wdt: CPU 0: IDLE0
E (32706) task_wdt: CPU 1: async_tcp
E (32706) task_wdt: Aborting.
abort() was called at PC 0x400e1cc3 on core 0
Backtrace: 0x4008c434:0x3ffbe170 0x4008c665:0x3ffbe190 0x400e1cc3:0x3ffbe1b0 0x40084771:0x3ffbe1d0 0x4016aaf3:0x3ffbc0d0 0x400e307a:0x3ffbc0f0 0x4008a361:0x3ffbc110 0x40088b7d:0x3ffbc130
My Code Snippet is given below,
Master
HttpClient http(gsmClient, "www.mydummyserver.com", 80);
AsyncWebServer server(80);
const char* ssid = "ESP32-Access-Point";
const char* password = "123456789";
IPAddress ip(192,168,5,2);
IPAddress gateway(192,168,5,1);
IPAddress subnet(255,255,255,0);
const char* PARAM_MESSAGE = "message";
void notFound(AsyncWebServerRequest *request) {
request->send(404, "text/plain", "Not found");
}
void setup() {
Serial.begin(115200);
WiFi.mode(WIFI_AP);
delay(100);
WiFi.softAPConfig(ip, gateway, subnet);
WiFi.softAP(ssid, password);
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(200, "text/plain", "Hello, world");
});
server.on("/myApi", HTTP_POST, [] (AsyncWebServerRequest *request) {
String message;
if (request->hasParam(PARAM_MESSAGE)) {
message = request->getParam(PARAM_MESSAGE)->value();
} else {
message = "No message sent";
}
http.setTimeout(20000);
String postData = "Param1=abcd&Param2=pqrs";
http.beginRequest();
http.post("http://www.mydummyserver.com/testapi.php");
http.sendHeader("Content-Type", "application/x-www-form-urlencoded");
http.sendHeader("Content-Length", postData.length());
http.beginBody();
http.print(postData);
http.endRequest();
int statusCode = http.responseStatusCode();
String response = http.responseBody();
Serial.print("Status code: ");
Serial.println(statusCode);
Serial.print("Response: ");
Serial.println(response);
request->send(200, "text/plain", "Response: " + message);
});
server.onNotFound(notFound);
server.begin();
}
void loop() {
}
Node
HTTPClient httpClient;
void setup() {
Serial.begin(115200);
WiFi.begin("ESP32-Access-Point", "123456789");
Serial.print("WiFi ");
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(10);
}
Serial.println("connected:" + WiFi.SSID());
}
void executeApi() {
Serial.println("Executing Api...");
httpClient.setTimeout(20000);
httpClient.begin("http://192.168.5.2/myApi");
httpClient.addHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
String contentStr = "Param1=abcd&Param2=pqrs";
int httpResponseCode = httpClient.POST(contentStr);
Serial.print("HTTP Response code: ");
Serial.println(httpResponseCode);
httpClient.end();
}
String cmd = "";
void loop() {
if (Serial.available() > 0) {
cmd = (Serial.readStringUntil('\n'));
if (cmd.length() > 0) {
if (cmd == "api") {
executeApi();
}
}
}
}
For sulutions i have tried following things,
a. I tried to write this into the loop() function.
while(true){
delay(1);
}
b. Tried disabling the wdt
disableCore0WDT()
disableCore1WDT()
but none of these giving good results.
