No AP

[roblomq]

I've successfully flashed an ESP-01 but after that there does no AP showup. Tried several times with several versions of the flash download tool tried several ESP-01 boards but all with the same result. Somebody a tip what I can try?

[uzi18]

do you have any logs?

[roblomq]

No because I have no access to it.

[uzi18]

Use serial port to debug situation.

[roblomq]

Switched SPI to DOUT and now it works.

[Bear1012061]

I'm getting it to upload to my 1MB ESP-01, but my ESP-01 won't create a network... Any solutions? The SPI speed is 40MHz and the SPI mode is QIO. Should it say "is stub and send flash finish" when it is finished uploading?

[flaviut]

I was able to get the flash logs by using picocom /dev/ttyUSB1 -b 76800.

I got the following logs:

2nd boot version : 1.6
  SPI Speed      : 40MHz
  SPI Mode       : QIO
  SPI Flash Size & Map: 4Mbit(256KB+256KB)
no GPIO select!
jump to run user1 @ 1000

rf_cal[0] !=0x05,is 0xFF

 ets Jan  8 2013,rst cause:2, boot mode:(3,6)

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

I then came across @uzi18's very helpful comment, and that fixed it:

esptool.py -b 1000000 -p /dev/ttyUSB1 write_flash --flash_freq 20m --flash_mode dio --flash_size 4MB 0x1000 user1.bin 0x0000 boot_v1.7.bin 0x3fc000 esp_init_data_default.bin 0x3fe000 blank.bin

I did have to download esp-link-v3.2.47 though, not the default v3.0.

[uzi18]

@flaviut thx for info. 3.0 is out of date, 3.2 has lots of fixes.