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By Seb123
#74166 Hardware
Hardware: NodeMCU DEVKIT 1.0
Core Version:

Description
Problem description:
Whenever i try to upload any code it shows me this
warning: espcomm_send_command: didn't receive command response
warning: espcomm_send_command(FLASH_DOWNLOAD_BEGIN) failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed

Settings in IDE
Module: NodeMCU1.0(ESP-12E Module) ?Generic ESP8266 Module?
Flash Size: 4 M(1M SPIFFS) ?4MB/1MB?
CPU Frequency: 80Mhz
Flash Mode: qio
Flash Frequency:40Mhz
Upload Using: SERIAL
Reset Method: NODEMCU
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this is in the examples
Sketch
`/*

This sketch demonstrates how to scan WiFi networks.
The API is almost the same as with the WiFi Shield library,
the most obvious difference being the different file you need to include:
*/
#include "ESP8266WiFi.h"
void setup() {
Serial.begin(115200);

// Set WiFi to station mode and disconnect from an AP if it was previously connected
WiFi.mode(WIFI_STA);
WiFi.disconnect();
delay(100);

Serial.println("Setup done");
}

void loop() {
Serial.println("scan start");

// WiFi.scanNetworks will return the number of networks found
int n = WiFi.scanNetworks();
Serial.println("scan done");
if (n == 0)
Serial.println("no networks found");
else
{
Serial.print(n);
Serial.println(" networks found");
for (int i = 0; i < n; ++i)
{
// Print SSID and RSSI for each network found
Serial.print(i + 1);
Serial.print(": ");
Serial.print(WiFi.SSID(i));
Serial.print(" (");
Serial.print(WiFi.RSSI(i));
Serial.print(")");
Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE)?" ":"*");
delay(10);
}
}
Serial.println("");

// Wait a bit before scanning again
delay(5000);
}
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### Debug Messages

messages here

any help would be really helpful?
Attachments
nodemcu_error.png