Hello colleagues if not this section please move. The problem is this, I bought on the spur of the moment such a small WIFI ESP8266 gadget and no response to AT commands, help to get it working. It starts probably fine because on the terminal I have this data.
Buddy I'm trying to flash the software but I'm doing something wrong because it's silent I've downloaded a couple of fierwals but no response I think I'm dividing the files wrong it only responds with ESP6288 v9.5.0. AT but whatever I send it returns <00><00> sometimes three or more. and this is when I upload with XTCOM_UTIL.
Added after 6 [minutes]: .
Unless I don't upload it all "ESP6288-IDFAT_V2.0 I still have versions 1.7 and1.6 I upload it NODEMCU FIRMWARE PROGRAMMER and flasch_download_tools_v3.6.6
15200 baud response is that the sofy uploaded successfully and any response is.
.
Rather 115200, just because something has uploaded yet doesn't mean it has uploaded correctly. In post #4 I added information about the files and their start addresses.
So I have to upload only this bin file from the factory folder at address0x00000? yes it was supposed to be 115200
.
You should upload the files according to the boot addresses I wrote about in post #4.
After unzipping the ESP8266_AT_Bin_V1.7.zip, they are located in the folders:
.../ESP8266_AT_Bin_V1.7/ESP8266_AT_Bin_V1.7/bin/
.../ESP8266_AT_Bin_V1.7/ESP8266_AT_Bin_V1.7/bin/at/1024+1024/
"ESP8266_AT_Bin_V1.7/ESP8266_AT_Bin_V1.7/bin/ " Mate in I don't see this batch and from this second path in 1024+1024 there are two files user 1 and user 2 both uploaded
ets Jan 8 2013,rst cause:2, boot mode:(3,6)
load 0x40100000, len 816, room 16
tail 0
chksum 0x8d
load 0x3ffe8000, len 788, room 8
tail 12
chksum 0xcf
ho 0 tail 12 room 4
load 0x3ffe8314, len 288, room 12
tail 4
chksum 0xcf
csum 0xcf
2nd boot version : 1.2
SPI Speed : 40MHz
SPI Mode : DIO
SPI Flash Size : 32Mbit
jump to run usererror user bin flag, flag = 8
user code done
<00>
ets Jan 8 2013,rst cause:2, boot mode:(3,4)
load 0x40100000, len 816, room 16
tail 0
chksum 0x8d
load 0x3ffe8000, len 788, room 8
tail 12
chksum 0xcf
ho 0 tail 12 room 4
load 0x3ffe8314, len 288, room 12
tail 4
chksum 0xcf
csum 0xcf
2nd boot version : 1.2
SPI Speed : 40MHz
SPI Mode : DIO
SPI Flash Size : 32Mbit
jump to run user1
mismatch map 5,spi_size_map 4
system_partition_table_regist fail
.
Added after 10 [hours] 56 [minutes]: .
Colleagues i found a video tutorial i uploaded according to it and ESP8266 after reset from pin reports redy after sending AT it sent back AT i.e. it did echo instead of responding ok Addresses in sequence
0x00000
0x01000
0x7C000
0x7E000
What am I doing wrong?
Added after 16 [minutes]:
I checked on the Puty terminal and there the bushes I him AT->řđŢ hardware is probably ok since it responds to batches ?
Added after 1 [hour] 25 [minutes]:
Sorry Puty also works and so would have an echo on
Added after 2 [hours] 13 [minutes]:
I close the topic, however, a hardware error this little wonder I plugged in such a way that I soldered a goldpin to RX iTX IO0 plus and Vcc and ground I connected the female so z3cm to connect under 3.3V on his starter board as close as possible to the inverter 5V->3,3v .I used female-female cables about 30cm to connect USB->UART TTL 5V/3.3V and the IO0 pin, but after uploading the software I left it under the ESP, which means I created strange states on this pin for the processor, making communication impossible. I am writing about this because it is an unforgivable mistake with processors to leave such antennas on the pin, especially with inverters and switching power supplies. Now Eclipsa can be fired up and run on the AVR and test if it talks over WIFI .Thank you for your interest and time .
Added after 40 [minutes]: .
Good thing I didn't close the topic I still have a question on how to configure because after giving the name of my WIFI router found AT+CWJAP="name", "WIFI password" it gets
+CWJAP:3
FAIL
ESP8266 set up
+CIPMODE:0
AT+CIPMUX=1
Where is the error in the connection router about a metre from the ESP?
"ESP8266_AT_Bin_V1.7/ESP8266_AT_Bin_V1.7/bin/ " Mate in I don't see this batch and from this second path in 1024+1024 there are two files user 1 and user 2 both uploaded
ets Jan 8 2013,rst cause:2, boot mode:(3,6)
load 0x40100000, len 816, room 16
tail 0
chksum 0x8d
load 0x3ffe8000, len 788, room 8
tail 12
chksum 0xcf
ho 0 tail 12 room 4
load 0x3ffe8314, len 288, room 12
tail 4
chksum 0xcf
csum 0xcf
2nd boot version : 1.2
SPI Speed : 40MHz
SPI Mode : DIO
SPI Flash Size : 32Mbit
jump to run usererror user bin flag, flag = 8
user code done
<00>
ets Jan 8 2013,rst cause:2, boot mode:(3,4)
load 0x40100000, len 816, room 16
tail 0
chksum 0x8d
load 0x3ffe8000, len 788, room 8
tail 12
chksum 0xcf
ho 0 tail 12 room 4
load 0x3ffe8314, len 288, room 12
tail 4
chksum 0xcf
csum 0xcf
2nd boot version : 1.2
SPI Speed : 40MHz
SPI Mode : DIO
SPI Flash Size : 32Mbit
jump to run user1
mismatch map 5,spi_size_map 4
system_partition_table_regist fail
.
Added after 10 [hours] 56 [minutes]: .
Colleagues i found a video tutorial i uploaded according to it and ESP8266 after reset from pin reports redy after sending AT it sent back AT i.e. it did echo instead of responding ok Addresses in sequence
0x00000
0x01000
0x7C000
0x7E000
What am I doing wrong?
Added after 16 [minutes]:
I checked on the Puty terminal and there the bushes I AT->řđŢ hardware is probably ok since it responds to batches ?
Added after 1 [hour] 25 [minutes]:
Sorry Puty also works and so would have an echo on
Added after 2 [hours] 13 [minutes]:
I close the topic, however, a hardware error this little miracle I plugged in such a way that I soldered a goldpin to RX iTX IO0 plus and Vcc and ground I connected female so z3cm to connect under 3.3V on his starter board as close as possible to the inverter 5V->3,3v .I used female-female cables about 30cm to connect USB->UART TTL 5V/3.3V and the IO0 pin, but after uploading the software I left it under the ESP, which means I caused the processor to have strange states on this pin, making communication impossible. I am writing about this because it is an unforgivable mistake with processors to leave such antennas on the pin, especially with inverters and switching power supplies. Now Eclipsa can be fired up and run on the AVR and test if it talks over WIFI .Thank you for your interest and time .
Added after 40 [minutes]: .
Good thing I didn't close the topic I still have a question on how to configure because after giving the name of my WIFI router found AT+CWJAP="name", "WIFI password" it gets
+CWJAP:3
FAIL
ESP8266 set up
+CIPMODE:0
AT+CIPMUX=1
Where is the error in connecting the router about a metre from the ESP?
The end of the game I messed up ESP after uploading the soft from the manual to version 1.6 it after reboot is still transmitting over uart and can not be stopped
set to 1 module works (a hard reset helped, i.e. disconnected from power) connects to my router useful site. As for the problems with the UART connection, it was inaccurate knowledge of the USB/TTL adapter, which works on 3.3V and I fed it with 5V, it's a wonder I didn't break it after connecting directly ESP8266->USB/TTL after uploading the software everything works nicely.
✨ The discussion revolves around troubleshooting an ESP8266 module that does not respond to AT commands. The initial user reports successful booting but no response to commands. Responses suggest that the issue may stem from the absence of AT firmware, with recommendations to flash the correct firmware using tools like XTCOM_UTIL. Specific boot addresses for firmware files are provided, and users discuss settings such as baud rate (115200) and flash size (4MByte). A user eventually resolves the issue by ensuring the correct UART voltage (3.3V) and performing a hard reset, leading to successful communication with the router. Generated by the language model.
TL;DR: ESP8266 AT not responding? For 4MB flash modules, flash the correct AT bins; "There is a separate file with instructions on what files to upload and with what boot address." Then reset and check GPIO0 wiring. For hobbyists fixing silent ESP‑12/ESP8266 UART. [Elektroda, khoam, post #18094010]
Why it matters: You can quickly revive a "dead" ESP8266 and get AT commands working to join Wi‑Fi.
It often lacks AT firmware from the factory, especially some ESP‑12E modules. Flash the official AT firmware and correct boot addresses. After flashing, reset and test over UART. Without AT firmware, AT commands do nothing. [Elektroda, khoam, post #18093959]
How do I flash the official AT firmware (ESP‑12, 4MB)?
Use the AT v1.7 package and these addresses: 0x00000 boot_v1.7.bin; 0x01000 user2.2048.new.5.bin; 0x3FC000 esp_init_data_default_v08.bin; 0xFE000 blank.bin; 0x3FE000 blank.bin.
What does “mismatch map 5, spi_size_map 4” mean at boot?
It indicates your flashed image’s partition map does not match the module’s flash size. The partition table fails to register, so AT won’t start. Reflash using the correct 4MB layout and addresses from the AT package. [Elektroda, adamekamator, post #18094113]
What baud rate should I use with AT firmware?
Use 115200 bps unless the package states otherwise. Quote: “Rather 115200.” Configure your terminal accordingly, then send AT and expect OK. If output is garbled, recheck baud. [Elektroda, khoam, post #18094018]
Why do I see only echo (AT comes back) but no OK?
Local echo may be enabled, or module echo is on. Send ATE0 to disable module echo. Ensure your terminal sends CRLF line endings. Then issue AT again to get OK. [“ESP8266 AT Instruction Set”]
How should I wire GPIO0 during flashing and normal use?
Keep GPIO0 high for normal boot. Pull GPIO0 low only for flashing. Avoid leaving GPIO0 floating near switching regulators. In the thread, a floating IO0 blocked communication entirely. [Elektroda, adamekamator, post #18094113]
I see “user bin flag, flag = 8” or “user code done,” but still no AT. How to fix?
Use the correct AT v1.7 images and addresses. Flash boot_v1.7.bin at 0x00000 and user2.2048.new.5.bin at 0x01000. Add init and blank bins at their offsets, then reset. [Elektroda, khoam, post #18094010]
How do I completely clear the ESP8266 flash before reflashing?
Erase the flash, then write the AT bins again. This resolves persistent boot spam and configuration conflicts. The helper explicitly recommended clearing flash as a first step. [Elektroda, khoam, post #18098147]
AT+CWJAP returns +CWJAP:3 FAIL. What does that mean?
Code 3 means the access point was not found. Verify SSID, channel, and 2.4 GHz mode. Set station mode first with AT+CWMODE=1. Code 2 is wrong password; 1 is timeout. [“ESP8266 AT Instruction Set”]
Do I need to set CWMODE before joining Wi‑Fi?
Yes. Use AT+CWMODE=1 (Station), 2 (SoftAP), or 3 (both). Then issue AT+CWJAP="ssid","pass". This order prevents association problems. [“ESP8266 AT Instruction Set”]
What power and USB‑TTL levels should I use?
Provide 3.3 V power and 3.3 V UART levels. Powering a 3.3 V USB‑TTL with 5 V caused UART issues here. Direct ESP8266 to 3.3 V USB‑TTL restored reliable communication. Avoid 5 V on ESP pins. [Elektroda, adamekamator, post #18098578]
Which flashing tools and settings worked in this thread?
NodeMCU Firmware Programmer, XTCOM_UTIL, and Espressif’s Flash Download Tool worked. Effective settings recorded: Flash size 4MByte, Speed 40 MHz, Mode DIO. Match these with your boot log for reliability. [Elektroda, adamekamator, post #18094113]
What do CIPMODE and CIPMUX do for TCP connections?
CIPMODE sets transparent (1) or normal mode (0). CIPMUX=1 enables multiple connections; 0 allows a single connection. Typical setup uses CIPMODE=0 and CIPMUX=1 before CIPSTART. [“ESP8266 AT Instruction Set”]
Why does the boot log show “SPI Speed 40MHz, SPI Mode DIO, SPI Flash Size 32Mbit”?
It reports the detected configuration. 32 Mbit equals 4 MB, guiding your flasher settings. Use these values to choose flash size and SPI mode. This confirms hardware parameters. [Elektroda, adamekamator, post #18094113]
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