1. Espressif Systems : http://espressif.com/

2. Contents Overview AT-Command TCP Communication using AT Commands
ESP8266 and ARDUINO IDE
Firmware Update

3. Why ESP8266?

4. Structure

5. Specification Voltage : 3.3V Current consumption : 10uA – 170mA
Flash memory attachable : 16MB max (512K normal)
Processor : Tensilica L bit
Processor speed : MHz
RAM : 32K + 80K
GPIOs : 17 (multiplexed with other functions)
ADC(Analog to Digital) : 1 input with 1024 step resolution
support : b/g/n/d/e/i/k/r
Maximum concurrent TCP connections : 5

6. Series
ESP-12

7. Reference Design

8. ESP-01 with AT Command
AT command

9. Setting USB to Serial Driver installation
Serial Port Setting : Port / bps / <NL>&<CR>

10. Basic AT Command AT : Test if AT system works correctly
AT+RST : Reset the module
AT+GMR : Print Firmware version
ATE0 : Disable echo
ATE1 : Enable echo

11. TCP Communication using AT Commands
TCP and HTTP

12. TCP Communication using AT Commands
1. Install Hercules ( )

13. TCP Communication using AT Commands
2. Check your IP (laptop) start/cmd/ipconfig

14. TCP Communication using AT Commands
Terminal Window>>
AT+CWMODE=3 (station & AP mode)
AT+CWLAP (search available Aps)
AT+CWJAP=“imok”,”kara1004” (connect to imok AP)
AT+CIPSTART=“TCP”,” ”,23 (link TCP to your laptop)
AT+CIPSEND=5
>Hello
AT+CIPCLOSE (Close TCP connection)
AT+CWQAP (Close WIFI connection)

15. Request HTTP service and respond
AT+CWMODE=3 (station & AP mode)
AT+CWLAP (search available Aps)
AT+CWJAP=“imok”,”kara1004” (connect to imok AP)
AT+CIPSTART=“TCP”,” ”,80 (link TCP to Raspberry server)
AT+CIPSEND=66
>GET /index.php HTTP/1.1
Host:
Connection: close
AT+CWQAP (Close WIFI connection)

16. ESP8266 and ARDUINO IDE
SDK for ARDUINO IDE

17. 환경설정

18. Install SDK
툴 / 보드 / 보드 매니저

19. Select ESP8266 Board 보드 : Generic ESP8266 Module Flash Mode: DIO
Flash Frequency : 40MHz
CPU Frequency : 80 MHz
Flash Size: 512K
Debug port : Disabled
Debug Level : None
Reset Method: ok
Upload Speed:
포트: 자신의 컨버터 포트

20. Example program : Print connected IP
#include <ESP8266WiFi.h>
char *ssid = "imok";
char *password = "kara1004";
void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password); // AP 접속 시작
Serial.println();
while(WiFi.status() != WL_CONNECTED)
{ delay(500); Serial.print("."); } // AP 접속 대기
Serial.println();
Serial.println("WiFi Connected...");
Serial.println(WiFi.localIP()); // IP 주소 출력 }
void loop() {

21. Download Flash 버튼을 누른 상태에서 Reset 버튼을 누른다. 부팅이 된 뒤에는 Flash 버튼을 떼어도 된다.
그 다음 아두이노 IDE에서 컴파일 뒤 다운로드
Flash
Reset

22. Result

23. Firmware Update
2016/10/21

24. Flash Download Tool http://espressif.com/ Support tools
Check “ESP8266”
Flash Download Tools
Flash Download Tools V3.4.2 (ESP8266 & ESP32)

25. Flash Download Tool http://espressif.com/ Support SDKs & Demos
Check “ESP8266”
ESP8266 NONOS SDK V

26. Firmware update 바이너리 파일 파일 경로 메모리 주소 blank.bin 0x78000
esp_init_data_default.bin
0x7C000
0x7A000
0x7E000
eagle.flash.bin
at/noboot
0x00000
eagle.irom0text.bin
0x10000
보드에서 Flash 버튼 누른 상태에서 Reset 버튼을 누른 후,
프로그램에서 포트와 통신속도를 설정하고
“START”를 누르면 된다.

27. 끝~