ESP8266 Community Forum

- Thu Sep 14, 2017 2:41 am #69970 I'm having some trouble flashing using the unofficial development tools. I have gotten flashing to work before but I think after I erase_flash the module, it started behaving unsually.

The only way for me to get the module to flash esphttpd code is to flash with boot_v1.6 using the flash tool given by espressif. Then use esptool via eclipse and flash boot_v1.2 and then flash the esphttpd code. Even doing this it only work for esphttpd example and nothing else. If I don't do this, the wifi module keeps reseting and giving the following message on the serial terminal.

Code: Select all 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       : QIO
  SPI Flash Size : 16Mbit
jump to run user1

OS SDK ver: 1.4.2(f57d61a) compiled @ Jul  1 2016 15:59:48
rf_cal[0] !=0x05,is 0xFF


I am using the unofficial development kit with eclipse oxygen. I haven't changed much of the code within the examples. I would appreciate any information regarding this error.

UPDATE:

I think i found the problem, when I check the flash ID I get all 0 and when I do the 2 flash tool option I can get an flash ID. I'm still not sure what is causing this though or how to resolve it.

Code: Select allc:/Espressif/utils/ESP8266/esptool.exe -p COM4 flash_id
esptool.py v1.2-dev
Connecting...
Manufacturer: 00
Device: 0000

Code: Select allc:/Espressif/utils/ESP8266/esptool.exe -p COM4 -b 115200 write_flash -ff 40m 0x00000 c:/Espressif/ESP8266_SDK/bin/boot_v1.2.bin
esptool.py v1.2-dev
Connecting...
Warning: Could not auto-detect Flash size (FlashID=0x0, SizeID=0x0), defaulting
to 4m
Running Cesanta flasher stub...
Flash params set to 0x0000
Writing 4096 @ 0x0... 4096 (100 %)
Wrote 4096 bytes at 0x0 in 0.4 seconds (87.4 kbit/s)...
Leaving...

- Sun Sep 17, 2017 11:32 pm #70060 I figured the problem, I think I figured out the problem. It was I was flashing the esp_init_data and blank to the wrong address. it worked for esphttpd cause it uses a different makefile than the other examples so the address seems to be okay for this.

I can't believe I spent days trying to figure this out.