Infinite boot loop

[espruino-discuss]

Posted at 2017-02-06 by Questdoino

Hi, all!
I`m having trouble with firmware newer than 1.87, no matter which boot version is uploaded (tried 1.6, 1.5, 1.4) the module goes to infinite boot loop

 ets Jan  8 2013,rst cause:2, boot mode:(3,0)

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

2nd boot version : 1.6
  SPI Speed      : 40MHz
  SPI Mode       : QIO
  SPI Flash Size & Map: 8Mbit(512KB+512KB)
no GPIO select!
jump to run user1 @ 1000

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

load 0x40100000, len 1856, room 16 
tail 0
chksum 0x63
load 0x3ffe8000, len 776, room 8 
tail 0
chksum 0x02
load 0x3ffe8310, len 552, room 8 
tail 0
chksum 0x79
csum 0x79

2nd boot version : 1.5
  SPI Speed      : 40MHz
  SPI Mode       : QIO
  SPI Flash Size & Map: 8Mbit(512KB+512KB)
jump to run user1 @ 1000

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

On 1.87 the module boots pretty fine even with 1.6 boot version

The module is ESP-01 with 1Mb of flash

Here is the esptool upload terminal string

D:\esp8266\esptool>esptool.py -p COM2 -b 115200 write_flash --flash_freq 40m --f
lash_mode qio --flash_size 1MB 0x0000 D:\esp8266\espruino\188\boot_v1.5.bin 0x10
00 D:\esp8266\espruino\188\espruino_esp8266_user1.bin 0xFE000 D:\esp8266\espruin
o\188\blank.bin

Any ideas? Thanks in advance!

[espruino-discuss]

Posted at 2017-02-06 by @MaBecker

Hi @Questdoino,

first erase the flash

esptool.py -p COM2 -b 115200 erase_flash

and then use a complete flash sequence like described here ...

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Posted at 2017-02-06 by DrAzzy

I have had no issues using v91 with the included 1.6 bootloader - I have some with that, and some with 1.4, and no problems with either of them.

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Posted at 2017-02-07 by Questdoino

Sure I'm erasing the flash before uploading

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Posted at 2017-02-07 by @MaBecker

OK, the flash statement you named is missing the esp_init_data_default.bin part

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Posted at 2017-02-07 by Questdoino

Still having problems with 1.88, 1.90, 1.91...

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Posted at 2017-02-07 by Questdoino

MaBe,
I`m a dumb, thanks)

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Posted at 2021-11-25 by user136941

I have the same issue, with 2.1... still don't know what I'm doing wrong.

> python "../esptool.py" --port COM6 --baud 115200 write_flash --flash_size 4MB-c1 -fm qio 0 espruino_2v10_esp8266_4mb_combined_4096.bin

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Posted at 2021-11-27 by @MaBecker

try the latest travis build file

http://www.espruino.com/binaries/travis/master/