Wemos D1 Mini ESP-12F Not Responding to AT Commands After Firmware Update

Question

Hi, maybe someone can give a hint - the ESP8266 chip in the ESP-12F version on the Wemos D1 mini PCB is not responding to AT commands. Uploaded ESP8266_NONOS_SDK-1.5.4 firmware (works at 74880), the chip works fine, you can upload a program to it and execute, but it doesn't respond to AT...

khoam · Answer

. If you upload AT type firmware it might start responding.

shel82 · Answer

Confusion with confusion with these firmwares - at least for a beginner, or is there somewhere reasonably accessible to describe it?

~khoam
Please confirm yet if I understand the offset addresses for the ESP-12F (32Mbit) in #BOOT MODE correctly
boot_v1.2+.bin 0x00000
user1.2048.new.5.bin 0x01000
esp_init_data_default.bin 0x3fc000
blank.bin 0xfe000 & 0x3fe000

khoam · Answer

. Good reasoning. Exactly as in the README.md file . Added after 1 [minute]: . In the manufacturer's documentation .

shel82 · Answer

Hmm, so I uploaded and it still doesn't work, and in the terminal it looks like this: Code: text Expand Select all Copy to clipboardets Jan  8 2013,rst cause:2, boot mode:(3,6) load 0x40100000, len 2592, room 16  tail 0 chksum 0xf3 load 0x3ffe8000, len 764, room 8  tail 4 chksum 0x92 load 0x3ffe82fc, len 676, room 4  tail 0 chksum 0x22 csum 0x22 2nd boot version : 1.7(5d6f877) SPI Speed : 40MHz SPI Mode : DIO SPI Flash Size & Map: 32Mbit(512KB+512KB) jump to run user1 @ 1000 mismatch map 5,spi_size_map 4 system_partition_table_regist fail .

khoam · Answer

. But what specific firmware version did you upload?

shel82 · Answer

. ESP8266_AT_Bin_V1.7

khoam · Answer

This could not work because you have: . So you can at most use the ESP8266 AT Bin version V1.6.2 For this version there is: 0x00000 boot_v1.7.bin 0x01000 user1.1024.new.2.bin 0xfc000 esp_init_data_default_v08.bin 0x7e000 blank.bin 0xfe000 blank.bin

shel82 · Answer

. In the meantime I have uploaded ESP8266_AT_Bin_V1.5.1 and it doesn't work either: Code: text Expand Select all Copy to clipboardets Jan  8 2013,rst cause:2, boot mode:(3,7) load 0x40100000, len 816, room 16  tail 0 chksum 0xef load 0x00000000, len 0, room 8  tail 0 chksum 0xef load 0x00000000, len 0, room 0  tail 0 chksum 0xef csum 0xef csum err ets_main.c   . Added after 2 [minutes]: .SPI Flash Size & Map: 32Mbit(512KB+512KB). - and isn't this value taken/written from the firmware I'm uploading, and is it unlikely to be used?

khoam · Answer

. What addresses did you provide for the individual binaries? Without this information it is difficult to answer, but it looks like you have entered the wrong ones. You should, regardless of AT firmware version, take those addresses that are in the 32Mbit(512KB+512KB) section. - at least that's what the logs for your board show. There are other addresses in other sections and the operation will fail. Added after 5 [minutes]: . Rather not, as you tried to upload firmware that required 1024KB+1024KB the first time. Just in case, you can check this with the command esptool .

shel82 · Answer

.

khoam · Answer

The original Wemos D1 mini has 4MB Flash = 32Mbit, 512+512 and the manufacturer recommends uploading the AT firmware like this:

shel82 · Answer

. Shrinks and that's what I'm doing, photo below, reply after uploading ESP8266_AT_Bin_V1.5.1: Code: text Expand Select all Copy to clipboardets Jan  8 2013,rst cause:2, boot mode:(3,7) load 0x40100000, len 816, room 16  tail 0 chksum 0xef load 0x00000000, len 0, room 8  tail 0 chksum 0xef load 0x00000000, len 0, room 0  tail 0 chksum 0xef csum 0xef csum err ets_main.c  .

khoam · Answer

You forced me to dust off my wemos d1 mini . So, I uploaded the AT software version ESP8266_AT_Bin_V1.5.1: esptool --port /dev/ttyUSB1 write_flash -fm qio 0x00000 boot_v1.6.bin Code: BashLog in, to see the code . esptool --port /dev/ttyUSB1 write_flash -fm qio 0x01000 user1.1024.new.2.bin Code: BashLog in, to see the code . esptool --port /dev/ttyUSB1 write_flash -fm qio 0x3fc000 esp_init_data_default.bin Code: BashLog in, to see the code . esptool --port /dev/ttyUSB1 write_flash -fm qio 0x7e000 blank.bin Code: BashLog in, to see the code esptool --port /dev/ttyUSB1 write_flash -fm qio 0xfe000 blank.bin Code: BashLog in, to see the code I then rebooted wemos (unplugging and plugging in the USB). I connected the serial port monitor with the speed set and I have: Code: DosLog in, to see the code . Now find at least one difference .

kaczakat · Answer

I recently uploaded version 2 from the attachment to Wemos and it works, in fact I even forgot to change the flash size and it stayed at 1MB, I previously uploaded 1.6 to ESP01. The UART is at 115200 and the upload program is also in the attachment

khoam · Answer

. There is no version 2.0 for AT firmware for the ESP8266, the manufacturer knows nothing about it: What the colleague sent in the attachment is actually version 1.3.0 from 2016, an artefact. The documentation in Chinese is not very helpful either. I already provided a link to the official manufacturer's documentation in post #4.

kaczakat · Answer

Actually, V2 is an SDK, but they work. So now all you have to do is paste: Code: C / C++Log in, to see the code .

khoam · Answer

. Yes, but you need to have the AT firmware version already uploaded, which is what the Author of this thread is trying to do.

kaczakat · Answer

Well that's the one I threw in, see post #15.

Wemos D1 Mini ESP-12F Not Responding to AT Commands After Firmware Update

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