"Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled." after SPI init

[skymaster64]

I'm trying to get a tracker to run with the board t-beam V1.2. Unfortunately so far without success. I installed VSCode and Platformio on a fresh Win11 according to the instructions. Then imported the code according to the instructions, changed the call, selected the board "ttgo-t-beam-V1_2", let the build run and flashed the board. Everything's nice up to here. The board boots and shows the start screen with LoRa Freq [EU] and version 2024.04.18 on the OLED. However, there is a bootloop.

Here is the log on the serial port ` rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:2 load:0x3fff0030,len:1184 load:0x40078000,len:13192 load:0x40080400,len:3028 entry 0x400805e4 E (752) SPIFFS: mount failed, -10025 [ 8][E][SPIFFS.cpp:89]�egin(): Mounting SPIFFS failed! Error: -1 [INFO][AXP2101] init done! [ 1028][E][vfs_api.cpp:24] open(): File system is not mounted [ 1029][E][vfs_api.cpp:24] open(): File system is not mounted [INFO][Main] RichonGuzman (CA2RXU) --> LoRa APRS Tracker/Station [INFO][Main] Version: 2024.04.18 E (5054) SPIFFS: mount failed, -10025 [INFO][Main] Number of APRS Messages : 0 [INFO][Main] Number of Winlink Mails : 0 [INFO][LoRa] Set SPI pins! Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled.

Core 1 register dump: PC : 0x400dbff4 PS : 0x00060a30 A0 : 0x800d278c A1 : 0x3ffd0260 A2 : 0x3ffc4dec A3 : 0x3ffc6450 A4 : 0x3ffc4b90 A5 : 0x3f4022b8
A6 : 0x3ffc6b8c A7 : 0x00000000 A8 : 0x800dbfe9 A9 : 0x3ffd0240
A10 : 0x3ffd02ac A11 : 0x3f4022b8 A12 : 0x00000017 A13 : 0x0000001a A14 : 0x00000012 A15 : 0x0000e100 SAR : 0x00000005 EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000000 LBEG : 0x4011563d LEND : 0x4011564c LCOUNT : 0x00000000

Backtrace: 0x400dbff1:0x3ffd0260 0x400d2789:0x3ffd02e0 0x40116506:0x3ffd03a0

0 0x400dbff1:0x3ffd0260 in LoRa_Utils::setup() at src/lora_utils.cpp:129 (discriminator 4)

1 0x400d2789:0x3ffd02e0 in setup() at src/LoRa_APRS_Tracker.cpp:180

2 0x40116506:0x3ffd03a0 in loopTask(void*) at C:/Users/xxxxxx/.platformio/packages/framework-arduinoespressif32/cores/esp32/main.cpp:42

ELF file SHA256: 00db70a7b17046f5

Rebooting... ets Jul 29 2019 12:21:46

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:2 load:0x3fff0030,len:1184 load:0x40078000,len:13192 load:0x40080400,len:3028 entry 0x400805e4 [INFO][AXP2101] init done! [INFO][Main] RichonGuzman (CA2RXU) --> LoRa APRS Tracker/Station [INFO][Main] Version: 2024.04.18 [INFO][Main] Number of APRS Messages : 0 [INFO][Main] Number of Winlink Mails : 0 [INFO][LoRa] Set SPI pins! Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled.

Core 1 register dump: PC : 0x400dbff4 PS : 0x00060a30 A0 : 0x800d278c A1 : 0x3ffd1370 A2 : 0x3ffc4dec A3 : 0x3ffc6450 A4 : 0x3ffc4b90 A5 : 0x3f4022b8
A6 : 0x3ffc6b8c A7 : 0x00000000 A8 : 0x800dbfe9 A9 : 0x3ffd1350 A10 : 0x3ffd13bc A11 : 0x3f4022b8 A12 : 0x00000017 A13 : 0x0000001a
A14 : 0x00000012 A15 : 0x0000e100 SAR : 0x00000005 EXCCAUSE: 0x0000001c EXCVADDR: 0x00000000 LBEG : 0x4011563d LEND : 0x4011564c LCOUNT : 0x00000000

Backtrace: 0x400dbff1:0x3ffd1370 0x400d2789:0x3ffd13f0 0x40116506:0x3ffd14b0

0 0x400dbff1:0x3ffd1370 in LoRa_Utils::setup() at src/lora_utils.cpp:129 (discriminator 4)

1 0x400d2789:0x3ffd13f0 in setup() at src/LoRa_APRS_Tracker.cpp:180

2 0x40116506:0x3ffd14b0 in loopTask(void*) at C:/Users/xxxxxx/.platformio/packages/framework-arduinoespressif32/cores/esp32/main.cpp:42

ELF file SHA256: 00db70a7b17046f5

Rebooting... ` What am I doing wrong?

I tried to find the location of the crash in the code. This seems to be here: "long freq = currentLoRaType->frequency;" in lora_utils.cpp If I put debug output in front of this line I can see it. If I set the debug output afterwards I no longer see it. Unfortunately I don't know much about C++. My knowledge comes from Z80 Assembler and TurboPascal3 :)

What is noticeable is that SPIFFS cannot be mounted when it is started for the first time. I suspect that the line in question is trying to read the frequency from the SPIFFS, which fails. An attempt by me to set the frequency statically lacks my knowledge. But I probably would have just come to the next post with a similar call.

Kind regards, Ron

[richonguzman]

Hi Ron, did you upload also the Filesystem in VSCODE??? usually this boot loop comes when its not uploaded and the board crashes as it has no info to start with

[skymaster64]

Plaese excuse my mistake. I found the necessary description in another (old) ESP32-APRS project. I didn't see the important step in your instructions. Maybe it is possible to point out this step at startup if the file system is not available?

73 de Ron