4MB Nor memory OTA reboot fail

[bzhang222]

I am using a 4MB NOR with ESP8266(ESP-12E), I can downlaod and flash into the 1MB+4KB region(option 6), and checksum is okay;

after download and do checksum, I called
system_upgrade_flag_set(UPGRADE_FLAG_FINISH);
system_upgrade_reboot()

then I got this failure
pcode=04x, frame_type=Fatal exception (28):
epc1=0x4010151f
epc2=0x00000000
epc3=0x4024f4aa
epcvaddr=0x00000008
depc=0x00000000

and system reboot again back to the first copy which is at 0+4KB region---

I compared these two files, they are exactly the same , matching on each byte; I am curious, should these two file be different? because they are linked to different place, isn't it?
user1.4096.new.6.bin
user2.4096.new.6.bin,

I choose 1 on step 2 and 6 on last step to build BIN1
I choose 2 on step 2 and 6 on last step to build BIN2

I can't think of a reason why the bin2 image does not boot, any hints?

[pratik]

There is a bug in the code it seems, maybe you are writing to an address where you should not, or something like that. The output .S file address contains the aseembly code. The error should be at address epc1=0x4010151f

[bzhang222]

Thanks for replying, but I further investigated and it seems that the boot1.7 is having problem detecting 1MB+1MB config for 4MB parts, even on non-fota boot, it shows this as 512+512, i guess that is why it can not find the BIN2, probably it is looking at 512KB+1KB region for BIN2. But I am compiling with latest SDK(as of today) and the gen_appbin.py is uptodate, and I am building with step 5 option 6 which is 4MB parts(1024+1024), so i think there is a bug in the boot1.7 somewhere...

2nd boot version : 1.7(5d6f877)
SPI Speed : 40MHz
SPI Mode : DOUT
SPI Flash Size & Map: 32Mbit(512KB+512KB)
jump to run user1 @ 1000

OS SDK ver: 1.5.0-dev(4e7f435) compiled @ Aug 25 2017 19:26:38

[Al_Ways]

try flash with --flash_size 4MB-c1

Code: Select all

esptool.py --port com --baud 115200 write_flash --flash_size 4MB-c1


or choose correct flash map when using flash download tool on windows