'분류 전체보기' 카테고리의 글 목록 (76 Page)

'잡동사니'에 해당되는 글 13142건

esp32-cam에 AT 펌웨어 넣기 실패 (0)	2023.12.14
esp32 at 펌웨어 (0)	2023.12.12
esp8266 wifi AT 명령어 예제 (0)	2023.12.12
esp32-s2 adc (0)	2023.12.11
esp32 oled i2c (0)	2023.12.11

esp8266 wifi AT 명령어 예제

다음 (daum.net)의 주소를 이용해서 한번 받아오려고 했는데 먼가 안 맞는지 안된다.

CIPSEND=18인데 14 + CR + LF 해도 먼가 안 맞는데 엔터가 한번 더 들어가야 해서 그런가?

GET / HTTP/1.0<엔터><엔터>

일단 google.com 은 잘 되는 듯. daum.net이 문제인가?

AT+CWMODE?

+CWMODE:2

OK
AT+CWMODE=1

OK
AT+CWLAP

+CWLAP:(3,"WIFI 1",-75,"00:00:00:00:00:00",1,1,0)
+CWLAP:(3,"WIFI 2",-70,"00:00:00:00:00:00",1,-19,0)
+CWLAP:(3,"WIFI 3",-89,"00:00:00:00:00:00",1,-17,0)
+CWLAP:(3,"WIFI 4",-82,"00:00:00:00:00:00",1,-21,0)
+CWLAP:(0,"WIFI 5",-89,"00:00:00:00:00:00",2,-21,0)
+CWLAP:(4,"WIFI 6",-89,"00:00:00:00:00:00",1,-24,0)

OK
AT+CWJAP="WIFI 1","password"

WIFI CONNECTED
WIFI GOT IP

OK
AT+CWQAP

OK
WIFI DISCONNECT
AT+CWJAP="WIFI 1","password"

WIFI CONNECTED
WIFI GOT IP

OK
AT+CIPSTA?

+CIPSTA:ip:"192.168.0.55"
+CIPSTA:gateway:"192.168.10.1"
+CIPSTA:netmask:"255.255.0.0"

OK
AT+CIPSTATUS

STATUS:2

OK
AT+CIPSTART="TCP","211.249.220.24",80

CONNECT

OK
AT+CIPSEND=18

OK
>
Recv 18 bytes

SEND OK

+IPD,280:HTTP/1.1 400 Bad Request
Date: Wed, 13 Dec 2023 05:05:16 GMT
Content-Type: text/html
Content-Length: 150
Connection: close

<html>
<head><title>400 Bad Request</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<hr><center>nginx</center>
</body>
</html>
CLOSED

[링크 : https://m.blog.naver.com/ajkun/220214336816]

[링크 : https://blog.naver.com/ssshin22/220868021464]

[링크 : https://wiki.seeedstudio.com/WiFi_Serial_Transceiver_Module/]

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esp8266 wifi at 명령어

AT+RST와 리셋 버튼의 메시지가 많이 다르게 나온다.

AT+RST

OK

ets Jan  8 2013,rst cause:2, boot mode:(3,7)

load 0x40100000, len 2408, room 16
tail 8
chksum 0xe5
load 0x3ffe8000, len 776, room 0
tail 8
chksum 0x84
load 0x3ffe8310, len 632, room 0
tail 8
chksum 0xd8
csum 0xd8

2nd boot version : 1.6
  SPI Speed      : 40MHz
  SPI Mode       : QIO
  SPI Flash Size & Map: 32Mbit(512KB+512KB)
jump to run user1 @ 1000

⸮⸮n⸮r⸮⸮n|⸮ll⸮$`⸮rl⸮l⸮l`⸮rl⸮l⸮l`⸮rl$⸮ll`rl$rl⸮bbČb⸮bbr⸮$b⸮n'nn⸮l⸮l⸮l⸮ll⸮l⸮⸮⸮⸮$`⸮n⸮bbll$b⸮⸮bbl⸮brlrl
ready

기본은 AP 모드로 되어있는 것 같고

AT+CWMODE?
+CWMODE:2

OK

FaryLink_F81835 라는 SSID로 검색되고 접속된다.

AT+CWSAP?
+CWSAP:"FaryLink_F81835","",1,0,4,0

OK

핸드폰이 192.168.4.2로 붙었는데 MAC이 안드로이드에서 나오는 거랑 다르다. 머지?

AT+CWLIF
192.168.4.2,0e:f8:ff:00:00:00

OK

핸드폰에서 붙이면 이렇게 붙는데, 저 MAC은 도대체 누구꺼냐 -ㅁ-?

노트북꺼 붙이니 제대로 뜨는데, 핸드폰은 왜 다르지?

AT+CWLIF
192.168.4.2,0e:f8:ff:00:00:00
192.168.4.3,8c:55:4a:28:25:bc

OK

요건 노트북 MAC

$ ifconfig
wlo1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1280
        inet 192.168.4.3  netmask 255.255.255.0  broadcast 192.168.4.255
        inet6 fe80::9169:c7eb:3e76:3204  prefixlen 64  scopeid 0x20<link>
        ether 8c:55:4a:28:25:bc  txqueuelen 1000  (Ethernet)
        RX packets 2431961  bytes 301079066 (301.0 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 205909  bytes 25249933 (25.2 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

status가 5는 멀 의미하는지 모르겠다. 한개 더 붙었다고 느는것도 아니고 머지?

프로토콜 문서 찾아보니 5번은 wifi에 연결되지 않았다. 머 AP 모드니까 당연한건가?

AT+CIPSTATUS
STATUS:5

OK

[링크 : https://www.espressif.com/sites/default/files/4a-esp8266_at_instruction_set_en_v1.5.4_0.pdf]

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esp32-s2 adc

eps8266은 10bit / esp32는 12bit인데

WiFi 끄면 100KSPS (이론상 2MSPS)

WiFi 켜면 1KSPS 정도 겨우 하는듯 하다.

내장 ADC로 사운드 입력으로 쓸 수 있으려나 했는데 무리일 듯.

ADC sampling rate: can reach 100000 times per second with Wi-Fi turned off, and 1000 times per second with Wi-Fi turned on.

[링크 : https://espressif-docs.readthedocs-hosted.com/projects/esp-faq/en/latest/software-framework/peripherals/adc.html]

[링크 : https://docs.espressif.com/projects/esp-idf/en/v4.4/esp32/api-reference/peripherals/adc.html]

Resolution (bit)	Speed (ksps)
ADC_WIDTH_BIT_9	27.1739
ADC_WIDTH_BIT_10	27.1739
ADC_WIDTH_BIT_11	27.1739
ADC_WIDTH_BIT_12	27.1739

[링크 : https://www.labfruits.com/esp32-adc-speed/]

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esp32 oled i2c

SPI 사기 전에는 일단 이걸로 테스트 해봐야겠군..

[링크 : https://stemwith.github.io/2021/09/26/ESP32-OLED/]

[링크 : https://randomnerdtutorials.com/esp32-ssd1306-oled-display-arduino-ide/]

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esp8266 nodemcu v3 기본 펌웨어

minicom이나 리눅스용 putty로 쇼를 해도 안되서

결국에는 arduino 설치하고 시리얼 터미널로 테스트하니 응답한다

Both NL & CR로 해주어야 응답한다. (망할!)

[링크 : https://techposts.org/flash-nodemcu-v3-stock-firmware/]

[링크 : https://github.com/sleemanj/ESP8266_Simple/blob/master/firmware/README.md]

v1.1.1
ai-thinker-v1.1.1.bin

the default baud rate is 115200
Important Note: The AT command must be end with "\r\n". For Arduino, must type the AT command like this

Serial1.print("AT+GMR\r\n");

Not like this:

Serial1.println("AT+GMR");

So the hardwareSerialMonitor sketch will not work now.

v0.9.5.2
ai-thinker-0.9.5.2-9600.bin
The default baud rate is 9600
ai-thinker-0.9.5.2.bin
The default baud rate is 115200
AT+GMR

AT version:0.21.0.0
SDK version:0.9.5

v0.9.5 beta
ai-thinker-0.9.5.bin
AT+GMR

00200.9.5(b1)
compiled @ Dec 25 2014 21:40:28
AI-THINKER Dec4

[링크 : https://wiki.aprbrother.com/en/Firmware_For_ESP8266.html]

어디서 받아야하나?

[링크 : https://www.espressif.com/en/support/download/at]

+

AT 명령어

[링크 : https://blog.naver.com/ssshin22/220868021464]

[링크 : https://www.espressif.com/sites/default/files/4a-esp8266_at_instruction_set_en_v1.5.4_0.pdf]

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esp8266 esptool.py

ubuntu 22.04에서 brltty를 삭제하고 하라고 한다.

[링크 : https://stackoverflow.com/questions/70123431/why-would-ch341-uart-is-disconnected-from-ttyusb]

패키지 설치는 아래의 명령어를 사용하면 끝!

$ sudo apt remove brltty
$ git clone https://github.com/espressif/esptool.git
$ pip install intelhex
$ pip install pyserial
$ cd esptool

아따.. 읽어 보기도 힘드네 -_-

$ ./esptool.py --port /dev/ttyUSB0 read_flash_status
esptool.py v4.6.2
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... Unsupported detection protocol, switching and trying again...
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: bc:ff:4d:f8:18:35
Uploading stub...
Running stub...
Stub running...
Status value: 0x0000
Hard resetting via RTS pin...

$ ./esptool.py --port /dev/ttyUSB0 flash_id
esptool.py v4.6.2
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... Unsupported detection protocol, switching and trying again...
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: bc:ff:4d:f8:18:35
Uploading stub...
Running stub...
Stub running...
Manufacturer: d8
Device: 4016
Detected flash size: 4MB
Hard resetting via RTS pin...

$ ./esptool.py --port /dev/ttyUSB0 chip_id
esptool.py v4.6.2
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... Unsupported detection protocol, switching and trying again...
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: bc:ff:4d:f8:18:35
Uploading stub...
Running stub...
Stub running...
Chip ID: 0x00f81835
Hard resetting via RTS pin...

$ ./esptool.py -h
usage: esptool [-h]
               [--chip {auto,esp8266,esp32,esp32s2,esp32s3beta2,esp32s3,esp32c3,esp32c6beta,esp32h2beta1,esp32h2beta2,esp32c2,esp32c6,esp32h2,esp32p4}]
               [--port PORT] [--baud BAUD]
               [--before {default_reset,usb_reset,no_reset,no_reset_no_sync}]
               [--after {hard_reset,soft_reset,no_reset,no_reset_stub}] [--no-stub] [--trace]
               [--override-vddsdio [{1.8V,1.9V,OFF}]] [--connect-attempts CONNECT_ATTEMPTS]
               {load_ram,dump_mem,read_mem,write_mem,write_flash,run,image_info,make_image,elf2image,read_mac,chip_id,flash_id,read_flash_status,write_flash_status,read_flash,verify_flash,erase_flash,erase_region,merge_bin,get_security_info,version}
               ...

esptool.py v4.6.2 - Espressif chips ROM Bootloader Utility

positional arguments:
  {load_ram,dump_mem,read_mem,write_mem,write_flash,run,image_info,make_image,elf2image,read_mac,chip_id,flash_id,read_flash_status,write_flash_status,read_flash,verify_flash,erase_flash,erase_region,merge_bin,get_security_info,version}
                        Run esptool.py {command} -h for additional help
    load_ram            Download an image to RAM and execute
    dump_mem            Dump arbitrary memory to disk
    read_mem            Read arbitrary memory location
    write_mem           Read-modify-write to arbitrary memory location
    write_flash         Write a binary blob to flash
    run                 Run application code in flash
    image_info          Dump headers from a binary file (bootloader or application)
    make_image          Create an application image from binary files
    elf2image           Create an application image from ELF file
    read_mac            Read MAC address from OTP ROM
    chip_id             Read Chip ID from OTP ROM
    flash_id            Read SPI flash manufacturer and device ID
    read_flash_status   Read SPI flash status register
    write_flash_status  Write SPI flash status register
    read_flash          Read SPI flash content
    verify_flash        Verify a binary blob against flash
    erase_flash         Perform Chip Erase on SPI flash
    erase_region        Erase a region of the flash
    merge_bin           Merge multiple raw binary files into a single file for later flashing
    get_security_info   Get some security-related data
    version             Print esptool version

options:
  -h, --help            show this help message and exit
  --chip {auto,esp8266,esp32,esp32s2,esp32s3beta2,esp32s3,esp32c3,esp32c6beta,esp32h2beta1,esp32h2beta2,esp32c2,esp32c6,esp32h2,esp32p4}, -c {auto,esp8266,esp32,esp32s2,esp32s3beta2,esp32s3,esp32c3,esp32c6beta,esp32h2beta1,esp32h2beta2,esp32c2,esp32c6,esp32h2,esp32p4}
                        Target chip type
  --port PORT, -p PORT  Serial port device
  --baud BAUD, -b BAUD  Serial port baud rate used when flashing/reading
  --before {default_reset,usb_reset,no_reset,no_reset_no_sync}
                        What to do before connecting to the chip
  --after {hard_reset,soft_reset,no_reset,no_reset_stub}, -a {hard_reset,soft_reset,no_reset,no_reset_stub}
                        What to do after esptool.py is finished
  --no-stub             Disable launching the flasher stub, only talk to ROM bootloader. Some features
                        will not be available.
  --trace, -t           Enable trace-level output of esptool.py interactions.
  --override-vddsdio [{1.8V,1.9V,OFF}]
                        Override ESP32 VDDSDIO internal voltage regulator (use with care)
  --connect-attempts CONNECT_ATTEMPTS
                        Number of attempts to connect, negative or 0 for infinite. Default: 7.

[링크 : https://github.com/espressif/esptool]

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esp8266 microUSB 연결 2

115200bps 로 설정해서 reset 누르니 아래와 같이 먼가 나오긴 한데..

pcb 뒷편에는 CH340G 드라이버 설치하고 9600bps로 연결하라고 하는데 머가 맞는걸까?

봉투에서 뜯은녀석이라 다른 프로그램이 들어있는건 아닐텐데..

�brlrl
ready

dmseg로 확인하면 아래와 같이 인식된다. CH341? CH340G 라고 한거 같은디..

normal boot

[  528.742541] usb 2-1.1: new full-speed USB device number 11 using ehci-pci
[  528.851812] usb 2-1.1: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice= 2.54
[  528.851831] usb 2-1.1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[  528.851838] usb 2-1.1: Product: USB2.0-Ser!
[  528.852466] ch341 2-1.1:1.0: ch341-uart converter detected
[  528.854364] ch341-uart ttyUSB0: break control not supported, using simulated break
[  528.854604] usb 2-1.1: ch341-uart converter now attached to ttyUSB0

flash 버튼 누르고 부팅하면 아래와 같이 조금더 나온다.

그런데 BRLTTY가 머하는걸까? USB 플래시 처럼인식은 안되나보네

flash 버튼 누르고 boot 메시지

[  455.103387] usb 2-1.1: new full-speed USB device number 10 using ehci-pci
[  455.213032] usb 2-1.1: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice= 2.54
[  455.213052] usb 2-1.1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[  455.213059] usb 2-1.1: Product: USB2.0-Ser!
[  455.213892] ch341 2-1.1:1.0: ch341-uart converter detected
[  455.214821] ch341-uart ttyUSB0: break control not supported, using simulated break
[  455.215109] usb 2-1.1: ch341-uart converter now attached to ttyUSB0
[  455.792404] input: BRLTTY 6.4 Linux Screen Driver Keyboard as /devices/virtual/input/input27
[  455.880634] usb 2-1.1: usbfs: interface 0 claimed by ch341 while 'brltty' sets config #1
[  455.881356] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0
[  455.881387] ch341 2-1.1:1.0: device disconnected

일반 권한

$ brltty
BRLTTY 6.4 rev BRLTTY-6.4 [https://brltty.app/]
brltty: can't isolate namespaces
brltty: executing as the invoking user: falinux
brltty: can't set supplementary groups
brltty: group not joined: 0(root)
brltty: group not joined: 5(tty)
brltty: group not joined: 29(audio)
brltty: group not joined: 107(input)
brltty: group not joined: 133(pulse-access)
brltty: required capability not granted: cap_sys_admin (for injecting input characters typed on a braille device)
brltty: required capability not granted: cap_sys_tty_config (for playing alert tunes via the built-in PC speaker)
brltty: required capability not granted: cap_mknod (for creating needed but missing special device files)

root 권한

$ sudo brltty
BRLTTY 6.4 rev BRLTTY-6.4 [https://brltty.app/]
brltty: executing as the invoking user: root

두번 실행하니 먼가 5초에 한번 주기적으로 뜬다. 멀까?

(그냥 프롬프트가 뜨길래 먼가했는데 백그라운드로 brltty가 실행되고 있어서 뜨는 메시지 였음)

[450328.072373] input: BRLTTY 6.4 Linux Screen Driver Keyboard as /devices/virtual/input/input36
[450351.379981] input: BRLTTY 6.4 Linux Screen Driver Keyboard as /devices/virtual/input/input37
[450351.389760] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1
[450356.391459] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1
[450361.393130] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1
[450366.397596] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1
[450371.400305] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1
[450376.389840] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1
[450381.395540] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1
[450386.401519] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1
[450391.397008] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1
[450396.389537] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1
[450401.402252] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1
[450406.395525] usb 1-2.4.2: usbfs: interface 0 claimed by usbfs while 'brltty' sets config #1

[링크 : https://linux.die.net/man/1/brltty]

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동물병원

어우 돈이 훅훅 나가는구만 ㅠㅠ

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키보드 중고 구매

알리에서도 124,124원 하는 고가의 키보드

일단 usb 선이 잘린놈이라 고쳐야 하는데, 고치는 김에 겸사겸사 트랙볼 키보드(세진)도 같이 손을 봐야겠다.

특이하게도 키보드 높이가 2단계로 조절이 가능할 것으로 보이고, 하단에 말아서 대충 넣을 곳도 보인다.

[링크 : https://ko.aliexpress.com/item/4000833845776.html]

드라이버 설치글

[링크 : https://www.clien.net/service/board/cm_keyboard/15304796]

[링크 : https://m.blog.naver.com/wreg/221940558957]

+

HP껀 꺼봐도 레노버나 thinkpad를 잘 써본게 아니라 못 본것 같은데

빨콩쪽 중앙 버튼이 스크롤용이고, 이게 scrolling standard라는 이름으로 불리는 듯.

[링크 : https://m.blog.naver.com/wreg/221854068812]

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