Weak validation of stored configuration data

[vvuk]

Installing the "8048S043C alt mode" firmware to a JC8048W550C (5.5" 800x480 capacitative) seems to sort of work; Wifi selection comes up and I can interact with the console to set the ssid and printer. But upon reset the "Connecting to wifi" screen flickers and gets corrupted, and I see the device boot looping, both with precompiled firmware and locally compiled. Unsure if this is related to #183 -- I tried with both the 14.2 MHz and 14.0 MHz panel frequencies with identical results. I know this board is not exactly the same as the 8048S043C; maybe something in here is an obvious issue? The invalid instructions seem to point to some kind of corruption, or perhaps a power issue?

From my local compile:

ELF file SHA256: 7bdafd1fa33c07c1

Rebooting...
ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0xc (RTC_SW_CPU_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x420d77ae
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0x44c
load:0x403c9700,len:0xbe4
load:0x403cc700,len:0x2a68
entry 0x403c98d4
CYD-Klipper v2.1.1
Type 'help' for serial console command list
> Guru Meditation Error: Core  1 panic'ed (InstrFetchProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0xad004136  PS      : 0x00060b30  A0      : 0x82005aae  A1      : 0x3fcebef0
A2      : 0xad004136  A3      : 0x3fc9c734  A4      : 0x3fc9c72c  A5      : 0x00000000  
A6      : 0x3fcbaf50  A7      : 0x00000001  A8      : 0x82005930  A9      : 0x3fcebed0
A10     : 0x3c0f07b8  A11     : 0x00000000  A12     : 0x00000000  A13     : 0x00000000  
A14     : 0x3fcf7e84  A15     : 0x00000001  SAR     : 0x00000016  EXCCAUSE: 0x00000014
EXCVADDR: 0xad004134  LBEG    : 0x42027c25  LEND    : 0x42027c48  LCOUNT  : 0x00000000  


Backtrace: 0x6d004133:0x3fcebef0 0x42005aab:0x3fcebf10 0x4200f3e5:0x3fcebf40 0x4204786a:0x3fcebf70

  #0  0x6d004133:0x3fcebef0 in ?? ??:0
  #1  0x42005aab:0x3fcebf10 in data_setup() at src/core/data_setup.cpp:118 (discriminator 3)
  #2  0x4200f3e5:0x3fcebf40 in setup() at src/main.cpp:25 (discriminator 3)
  #3  0x4204786a:0x3fcebf70 in loopTask(void*) at C:/Users/vladimir/.platformio/packages/framework-arduinoespressif32/cores/esp32/main.cpp:42




ELF file SHA256: 7bdafd1fa33c07c1

Rebooting...
�ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0xc (RTC_SW_CPU_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x420d77ae
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0x44c
load:0x403c9700,len:0xbe4
load:0x403cc700,len:0x2a68
entry 0x403c98d4
CYD-Klipper v2.1.1
Type 'help' for serial console command list
> Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0x42005929  PS      : 0x00060b30  A0      : 0x82005aae  A1      : 0x3fcebe60
A2      : 0x00000000  A3      : 0x3fc9c734  A4      : 0x3fc9c72c  A5      : 0x00000000  
A6      : 0x3fcbdd70  A7      : 0x00000000  A8      : 0x82005929  A9      : 0x3fcebe40
A10     : 0x00000000  A11     : 0x00000000  A12     : 0x00000000  A13     : 0x00000000  
A14     : 0x3fcbde74  A15     : 0x00000001  SAR     : 0x0000001e  EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000000  LBEG    : 0x42027c25  LEND    : 0x42027c48  LCOUNT  : 0x00000000  


Backtrace: 0x42005926:0x3fcebe60 0x42005aab:0x3fcebe80 0x4200f3e5:0x3fcebeb0 0x4204786a:0x3fcebee0

  #0  0x42005926:0x3fcebe60 in fetch_printer_data() at src/core/data_setup.cpp:20
  #1  0x42005aab:0x3fcebe80 in data_setup() at src/core/data_setup.cpp:118 (discriminator 3)
  #2  0x4200f3e5:0x3fcebeb0 in setup() at src/main.cpp:25 (discriminator 3)
  #3  0x4204786a:0x3fcebee0 in loopTask(void*) at C:/Users/vladimir/.platformio/packages/framework-arduinoespressif32/cores/esp32/main.cpp:42




ELF file SHA256: 7bdafd1fa33c07c1

Rebooting...
ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0xc (RTC_SW_CPU_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x40379dae
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0x44c
load:0x403c9700,len:0xbe4
load:0x403cc700,len:0x2a68
entry 0x403c98d4
CYD-Klipper v2.1.1
Type 'help' for serial console command list
> Guru Meditation Error: Core  1 panic'ed (IllegalInstruction). Exception was unhandled.
Memory dump at 0x42053098: 000000ff 2c00a136 00a0b24c
Core  1 register dump:
PC      : 0x4205309c  PS      : 0x00060034  A0      : 0x40379187  A1      : 0x3fcebe10  
A2      : 0x3fcebe30  A3      : 0x3fc9c798  A4      : 0x82005929  A5      : 0x4037913b
A6      : 0x303a3845  A7      : 0x00000000  A8      : 0x80377fe8  A9      : 0x3fcebdf0  
A10     : 0x3fcebe30  A11     : 0x00000000  A12     : 0x8200f138  A13     : 0x3fcebeb0
A14     : 0x303a3845  A15     : 0x3fcbaf3c  SAR     : 0x00000019  EXCCAUSE: 0x00000000  
EXCVADDR: 0x00000008  LBEG    : 0x42027c25  LEND    : 0x42027c48  LCOUNT  : 0x00000000


Backtrace: 0x42053099:0x3fcebe10 0x40379184:0x3fcebe30 0x42005928:0x3fcebef0 0x42005aab:0x3fcebf10 0x4200f3e5:0x3fcebf40 0x4204786a:0x3fcebf70

  #0  0x42053099:0x3fcebe10 in start_cpu0_default at startup.c:?
  #1  0x40379184:0x3fcebe30 in _xt_user_exc at /Users/ficeto/Desktop/ESP32/ESP32S2/esp-idf-public/components/freertos/port/xtensa/xtensa_vectors.S:703
  #2  0x42005928:0x3fcebef0 in fetch_printer_data() at src/core/data_setup.cpp:20
  #3  0x42005aab:0x3fcebf10 in data_setup() at src/core/data_setup.cpp:118 (discriminator 3)
  #4  0x4200f3e5:0x3fcebf40 in setup() at src/main.cpp:25 (discriminator 3)
  #5  0x4204786a:0x3fcebf70 in loopTask(void*) at C:/Users/vladimir/.platformio/packages/framework-arduinoespressif32/cores/esp32/main.cpp:42




ELF file SHA256: 7bdafd1fa33c07c1

[vvuk]

.. So this was apparently because I misunderstood the ip command. I used it to set the IP of my printer (not realizing it actually sets the ip of the device). This led to the boot loop and crashes above. Quickly running an erase ip fixed the issue, and the display seems to work fine now.

Is there perhaps some error unhandled in the wifi config?

[suchmememanyskill]

There is indeed pretty weak validation on the currently stored state, probably worth checking that