ESP-01s flash ok but not boot AP

[matiasojedam]

Hi

I flash my ESP-01s

~/esp-link-v3.0.14-g963ffbb# esptool -v -cp /dev/ttyUSB0 -cb 460800 -cd none -bz 1M -ca 0x00000 -cf boot_v1.6.bin -ca 0x01000 -cf user1.bin -ca 0xFC000 -cf esp_init_data_default.bin -ca 0xFE000 -cf blank.bin esptool v0.4.6 - (c) 2014 Ch. Klippel ck@atelier-klippel.de setting flash size from 512K to 1M opening port /dev/ttyUSB0 at 460800 opening bootloader resetting board trying to connect trying to connect Uploading 3856 bytes from boot_v1.6.bin to flash at 0x00000000 .... Uploading 330756 bytes from user1.bin to flash at 0x00001000 .................................................................................................................................................................................................................................................................................................................................... Uploading 128 bytes from esp_init_data_default.bin to flash at 0x000FC000 . Uploading 4096 bytes from blank.bin to flash at 0x000FE000 .... starting app without reboot closing bootloader

but when I boot the ESP, this keep blue light flashing fast all time without any response (no boot AP)

Any idea?

Thanks Im using this power up wiring:

[leodesigner]

Try to set port speed to 78400 and look to the boot loader debug messages.

[uzi18]

And 115200 in debug messages on serial port

[yossioo]

Came here as well Tried flashing esp-link-v3.0.14-g963ffbb and esp-link-v3.2.47-g9c6530d with esptool.py on NodeMCU V3 according to the instructions. Flash is successful, but no AP

Listening to serial on 78400 yields:

[17:10:05:719] load 0x40100000, len 2408, room 16 ␍␊
[17:10:05:727] tail 8␍␊
[17:10:05:727] chksum 0xef␍␊
[17:10:05:727] load 0x00000000, len 0, room 0 ␍␊
[17:10:05:736] tail 0␍␊
[17:10:05:736] chksum 0xef␍␊
[17:10:05:736] load 0x00000000, len 0, room 8 ␍␊
[17:10:05:744] tail 0␍␊
[17:10:05:744] chksum 0xef␍␊
[17:10:05:744] csum 0xef␍␊
[17:10:05:744] csum err␍␊
[17:10:05:744] ets_main.c 

Is there something I am doing wrong? Or is there a way to fix this? Thank you

[asmagill]

I recently got a batch of ESP-01s's that wouldn't seem to work -- flashing looked like it worked, but the device kept resetting during boot (attach to the serial interface at 74880 baud to see the initial debug info the ESP outputs during a reboot).

I was able to finally get all of them to work by adding -fm dout to the esptool args (before the address and file mappings -- in my case, I used: esptool.py --port /dev/tty.usbserial-A50285BI --baud 460800 write_flash -fs 8m -ff 40m -fm dout 0x00000 boot_v1.6.bin 0x1000 user1.bin 0xfc000 esp_init_data_default.bin 0xfe000 blank.bin

The possible options for -fm are qio, qout, dio, and dout... I don't know a way to determine which is required, I just tried them all until one of them worked.

Hope this helps!

[yossioo]

Yep, flashing with esptool.py --port /dev/ttyUSB0 --baud 230400 write_flash -fs 32m -ff 80m -fm dout 0x00000 boot_v1.6.bin 0x1000 user1.bin 0x3FC000 esp_init_data_default.bin 0x3FE000 blank.bin solved it!