Failed to connect to ESP32: No serial data received

[alifiazahra1420]

hello I have problem when uploading the code it says "Failed to connect to ESP32: No serial data received.
For troubleshooting steps visit: Troubleshooting - ESP32 - — esptool.py latest documentation
the selected serial port For troubleshooting steps visit: Troubleshooting - ESP32 - — esptool.py latest documentation
does not exist or your board is not connected"

I'm using ESP32 for WiFi connection to influxdb and grafana

here's the code

#include <WiFi.h>
#include <InfluxDbClient.h>

const char* ssid = "LOL";
const char* password = "19282828";

#define RXD2 16
#define TXD2 17
String bacanilai;
// E.g. http://192.168.100.4:8086 alamat ip laptop(In InfluxDB 2 UI -> Load Data -> Client Libraries),
#define INFLUXDB_URL "http://172.20.10.3:8086"
// InfluxDB 2 server or cloud API authentication token (Use: InfluxDB UI -> Load Data -> Tokens -> ) #define INFLUXDB_TOKEN "toked-id" // InfluxDB 2 organization id (Use: InfluxDB UI -> Settings -> Profile -> ) #define INFLUXDB_ORG "org" // InfluxDB 2 bucket name (Use: InfluxDB UI -> Load Data -> Buckets) #define INFLUXDB_BUCKET "bucket" // InfluxDB v1 database name #define INFLUXDB_DB_NAME "zibran" // InfluxDB client instance //InfluxDBClient client(INFLUXDB_URL, INFLUXDB_ORG, INFLUXDB_BUCKET, INFLUXDB_TOKEN); // InfluxDB client instance for InfluxDB 1 InfluxDBClient client(INFLUXDB_URL, INFLUXDB_DB_NAME); // Data point atau namatabel nya Point sensor("temperature"); float Press ; const float OffSet = 0.48340; //nilai tegangan out sensor tanpa beban void setup(void) { Serial.begin(115200); //Serial1.begin(9600, SERIAL_8N1, RXD2, TXD2); Serial2.begin(9600, SERIAL_8N1, RXD2, TXD2); delay(1000); // Connect to WiFi network WiFi.begin(ssid, password); Serial.println("Sedang Koneksi ke Wifi"); // Wait for connection while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.print("Connected to "); Serial.println(ssid); Serial.print("IP address: "); Serial.println(WiFi.localIP()); //** Bagian koneksi dari influxdb 1.8 while (client.validateConnection() == false) { Serial.print("Koneksi ke InfluxDB gagal: "); Serial.println(client.getLastErrorMessage()); delay(5000); } Serial.print("berhasil koneksi ke InfluxDB: "); Serial.println(client.getServerUrl()); } void loop(void) { while (Serial2.available()) { bacanilai = Serial2.readString(); Serial.println(bacanilai); delay(100); } Press = bacanilai.toFloat(); // Save pada field, nilainya pada tabel sensor.addField("suhu",bacanilai); //Print what are we exactly writing Serial.print("save nilai sensor ke tabel/measurement: "); Serial.println(client.pointToLineProtocol(sensor)); if (!client.writePoint(sensor)) { Serial.print("Gagal save ke InfluxDB : "); Serial.println(client.getLastErrorMessage()); } delay(5000); }

[UKHeliBob]

Your topic was MOVED to its current forum category which is more appropriate than the original

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