Uploading error: exit status 0xffffffff

Using Arduino Avrdude, stk500, Bootloader issues
1

I can't upload my code. i use esp-01 wifi module, and esp-01 wifi adapter.
using adpater, gnd - gnd vcc - 5v, rx - 6, tx -7.
there is my debugging comment.

trying to connect
	flush start
	setting serial port timeouts to 1 ms
	setting serial port timeouts to 1000 ms
	flush complete
	espcomm_send_command: sending command header
	espcomm_send_command: sending command payload
	serialport_receive_C0: 54 instead of C0
trying to connect
	flush start
	setting serial port timeouts to 1 ms
	setting serial port timeouts to 1000 ms
	flush complete
	espcomm_send_command: sending command header
	espcomm_send_command: sending command payload
	read 0, requested 1
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
Failed uploading: uploading error: exit status 0xffffffff

and there is my code.

#include <SoftwareSerial.h>
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>

SoftwareSerial espSerial(6, 7); // RX, TX

const char* ssid = "myWIFI"; 
const char* password = "PASSWORD";  
const char* serverAddress = "http://ip_address/info"; // server

void setup() {
  Serial.begin(115200);
  espSerial.begin(115200); 

  espSerial.println("AT");
  delay(1000);
  if (espSerial.find("OK")) {
    Serial.println("ESP8266 is ready");
  } else {
    Serial.println("ESP8266 not responding");
    while (1);
  }


  espSerial.println("AT+CWJAP=\"" + String(ssid) + "\",\"" + String(password) + "\"");
  delay(5000);
  if (espSerial.find("OK")) {
    Serial.println("Connected to WiFi");
  } else {
    Serial.println("Failed to connect to WiFi");
    while (1);
  }

  HTTPClient http;
  http.begin(serverAddress);
  int httpCode = http.GET();

  if (httpCode > 0) {
    String payload = http.getString();
    Serial.println("Server response:");
    Serial.println(payload);
  } else {
    Serial.print("Error on HTTP request. HTTP error code: ");
    Serial.println(httpCode);
  }

  http.end();
}
void loop() {
}
2

Your topic has been moved. Please do not post in "Uncategorized"; see the sticky topics in Uncategorized - Arduino Forum.

I'm not familiar with your board and it's upload procedures. But I think that the above is wrong: uploads usually work via Serial and not via some (randomly) choosen pins.

3

Are you certain this is the correct
espSerial.begin(115200);
The only example code I found uses 9600 baud.

Edit: ...on a software serial port. Apparently it will do 115200 baud on a hardware serial port.