ESP8266 Community Forum

- Wed Nov 01, 2017 7:51 am #71441 Hi,

I decided to update AT firmware of my ESP12E module when some AT commands (ex GPIO) respond with error continuously.

I don't know where did I go wrong but module no longer respond any AT commands. I am waiting for help. Thanks.

Connections:
RXD0 >> FTDI TX
TXD0 >> FTDI RX
EN >> pull-up 10k
RST >> pull-up 10k
GPIO16 >> RST
GPIO0 >> pull-up 2.2k ( PULL-DOWN WHILE FLASHING )
GPIO2 >> pull-up 2.2k
GPIO15 >> pull-down 2.2k


Command:

Code: Select all$ esptool.py -p /dev/ttyUSB0 erase_flash
$ esptool.py -p /dev/ttyUSB1  write_flash 0x00000 boot_v1.7.bin 0x01000 user1.2048.new.5.bin 0x3fc000 esp_init_data_default.bin 0xfe000 blank.bin 0x3fe000 blank.bin

BOOT Log with 74880 baud:

Code: Select all␍␊
 ets Jan  8 2013,rst cause:2, boot mode:(3,6)␍␊
␍␊
load 0x40100000, len 2592, 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

- Fri Nov 03, 2017 5:24 pm #71504 While topic has been waiting for the approval, I flash the firmware AiThinker_ESP8266_DIO_32M_32M_20160615_V1.5.4.bin. Now it responds AT commands but GPIO and other SYS commands resulting with error.