Guru Meditation Error
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What baffles me is that [1] shows:
// check for the correct lora radio mode if (lora_obj.stack_mode != E_LORA_STACK_MODE_LORAWAN) { nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible)); }Drawing a conclusion from that, might it be that
lora_joinis not advisable when doing raw LoRa as outlined within your code@sita said in Guru Meditation Error:
lora = LoRa(mode=LoRa.LORA, region=LoRa.EU868, frequency=433000000, power_mode=LoRa.ALWAYS_ON, tx_power=10, bandwidth=LoRa.BW_125KHZ, sf=8, preamble=8, coding_rate=LoRa.CODING_4_8)But who is actually invoking
lora_joinanyway?With kind regards,
Andreas.[1] https://github.com/pycom/pycom-micropython-sigfox/blob/Dev/esp32/mods/modlora.c#L1841-L1844
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Dear @sita,
decoding the core dump shows (without guarantee):
==================== CURRENT THREAD STACK ===================== #0 0x4009192e in vTaskExitCritical (mux=0x844a) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/tasks.c:4274 #1 0x401124f0 in lora_join (n_args=1073518712, pos_args=0x3ffc990c <lora_partial_rx_packet+12>, kw_args=0x401124f0 <lora_join+16>) at mods/modlora.c:1843 ======================== THREADS INFO ========================= Id Target Id Frame 16 process 15 0x4000bff0 in ?? () 15 process 14 xQueueCreateCountingSemaphoreStatic (uxMaxCount=1073426000, uxInitialCount=1073431200, pxStaticQueue=0x3ffb2e9c) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/queue.c:659 14 process 13 xQueueCreateCountingSemaphoreStatic (uxMaxCount=1073495820, uxInitialCount=0, pxStaticQueue=0x3ffc3f58 <vflash_mem+1900>) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/queue.c:659 13 process 12 xQueueCreateCountingSemaphoreStatic (uxMaxCount=1073444348, uxInitialCount=0, pxStaticQueue=0x3ffb7648) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/queue.c:659 12 process 11 0x4000bff0 in ?? () 11 process 10 xQueueCreateCountingSemaphoreStatic (uxMaxCount=1073458244, uxInitialCount=1073580336, pxStaticQueue=0x3ffbac90) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/queue.c:659 10 process 9 xQueueCreateCountingSemaphoreStatic (uxMaxCount=1073445832, uxInitialCount=0, pxStaticQueue=0x3ffb7c14) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/queue.c:659 9 process 8 xQueueCreateCountingSemaphoreStatic (uxMaxCount=1073589088, uxInitialCount=1073603328, pxStaticQueue=0x3ffdabac) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/queue.c:659 8 process 7 0x4000bff0 in ?? () 7 process 6 0x40092b55 in xTaskNotify (xTaskToNotify=0x0, ulValue=<optimized out>, eAction=<optimized out>) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/tasks.c:4872 6 process 5 0x4009192e in vTaskExitCritical (mux=0x8484) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/tasks.c:4274 5 process 4 xQueueCreateCountingSemaphoreStatic (uxMaxCount=1073468564, uxInitialCount=1073458080, pxStaticQueue=0x3ffbd4e0) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/queue.c:659 4 process 3 0x40206db2 in API_vhci_host_check_send_available () 3 process 2 xQueueCreateCountingSemaphoreStatic (uxMaxCount=1073470132, uxInitialCount=0, pxStaticQueue=0x3ffbdb00) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/queue.c:659 2 process 1 0x4009192e in vTaskExitCritical (mux=0x844a) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/tasks.c:4274 * 1 <main task> 0x4009192e in vTaskExitCritical (mux=0x844a) at /Users/iwahdan/esp/pycom-esp-idf/components/freertos/tasks.c:4274So, it seems to happen while performing
lora_joinwithinmods/modlora.c.// check for the correct lora radio mode if (lora_obj.stack_mode != E_LORA_STACK_MODE_LORAWAN) { nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible)); }I assume this is some synchronization issue wrt. the code is already doing other things.
Maybe waiting for successfully joining the LoRaWAN network helps like outlined within [1] before doing other operations.Forget about my last words. I believe this is wrong as I've probably used the wrong
application.elffile for decoding the core dump -- see next post(s).I just recognized you are using pure LoRa instead of LoRaWAN....
@sita said in Guru Meditation Error:
lora = LoRa(mode=LoRa.LORA, region=LoRa.EU868, frequency=433000000, power_mode=LoRa.ALWAYS_ON, tx_power=10, bandwidth=LoRa.BW_125KHZ, sf=8, preamble=8, coding_rate=LoRa.CODING_4_8)... so who should be actually invoking
lora_joinanyway ;].With kind regards,
Andreas.P.S.: To be safe that the core dump decoding gives us the correct results: Are you using
lopy4-vanilla-dragonfly-onewireorlopy4-vanilla-dragonfly-onewire-i2s?
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I am also seeing Guru Meditation Errors with latest firmware v1.20.1.r2 and vanilla releases.
Here's just a few:Guru Meditation Error: Core 1 panic'ed (Unhandled debug exception)
Guru Meditation Error: Core 0 panic'ed (IllegalInstruction). Exception was unhandled.
Guru Meditation Error: Core 0 panic'ed (IllegalInstruction). Exception was unhandled.The code makes heavy use of the UARTs and runs flawlessly on desktop.
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Below is the coredump that i got in my Atom IDE for the guru meditation error.
rst:0xc (SW_CPU_RESET),boot:0x12 (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:1 load:0x3fff8020,len:8 load:0x3fff8028,len:2136 load:0x4009fa00,len:19860 entry 0x400a05d0 Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled. Core 1 register dump: PC : 0x400933c3 PS : 0x00060033 A0 : 0x80092079 A1 : 0x3ffbf060 A2 : 0x3ffbb8d8 A3 : 0x00060023 A4 : 0x3ffc44a4 A5 : 0x00000001 A6 : 0x000000fe A7 : 0x00000000 A8 : 0x00000000 A9 : 0x3ffbb8d8 A10 : 0x3ffbb8d8 A11 : 0x00000000 A12 : 0x800fd97c A13 : 0x3ffd79a0 A14 : 0x3f403ce4 A15 : 0x00000002 SAR : 0x00000003 EXCCAUSE: 0x0000001c EXCVADDR: 0x00000004 LBEG : 0x400ecf08 LEND : 0x400ecf4b LCOUNT : 0x00000000 Core 1 was running in ISR context: EPC1 : 0x400933c3 EPC2 : 0x00000000 EPC3 : 0x00000000 EPC4 : 0x40087b2e Backtrace: 0x400933c3:0x3ffbf060 0x40092076:0x3ffbf080 0x40090a0d:0x3ffbf0a0 0x40089529:0x3ffbf0c0 0x40083be9:0x3ffbf100 0x400ff4ac:0x3ffd7930 0x400e6a17:0x3ffd7950 0x401014de:0x3ffd7980 0x400fd90d:0x3ffd79a0 0x400fd979:0x3ffd79c0 0x4010991b:0x3ffd79e0 0x401015d4:0x3ffd7a80 0x400fd90d:0x3ffd7ab0 0x400fd93a:0x3ffd7ad0 0x400e1aa5:0x3ffd7af0 0x400e1d35:0x3ffd7b90 0x400e0799:0x3ffd7bb0 ================= CORE DUMP START ================= 7DIAABAAAABsAQAA 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E (9014) esp_core_dump: Crashed task has been skipped! Rebooting... ets Jun 8 2016 00:22:57I'm trying to send loraraw data packets with GPS, timestamp along with a integer( to calculate the packet loss) in them. Once the data is sent, the same will also be stored in the SD card. After no fixed amount of time, the sender module crashes with guru meditation error, but will restart itself to send the data packets. So i'm seeing a break in the integer number, which will restart from 0 after this error. The sender module code that I wrote is as follows:
import machine import math import network import os import time import utime import gc import socket import pycom import ustruct #from machine import RTC from machine import SD from L76GNSS import L76GNSS from pytrack import Pytrack from network import LoRa from math import ceil sd = SD() os.mount(sd, '/sd') os.listdir('/sd') #time.sleep(2) gc.enable() py = Pytrack() l76 = L76GNSS(py) lora = LoRa(mode=LoRa.LORA, region=LoRa.EU868, frequency=433000000, power_mode=LoRa.ALWAYS_ON, tx_power=10, bandwidth=LoRa.BW_125KHZ, sf=8, preamble=8, coding_rate=LoRa.CODING_4_8) # create a raw LoRa socket s = socket.socket(socket.AF_LORA, socket.SOCK_RAW) i = 0 while True: coord = l76.coordinates() gps_datetime = l76.get_datetime() lat,lon = coord timestamp =('20' + gps_datetime[4][4] + gps_datetime[4][5]+gps_datetime[4][2] + gps_datetime[4][3]+gps_datetime[4][0] + gps_datetime[4][1]+gps_datetime[2][0] + gps_datetime[2][1]+gps_datetime[2][2] + gps_datetime[2][3]+gps_datetime[2][4] + gps_datetime[2][5] ) #s.setblocking(True) value = i message = ''+str(lat)+','+str(lon)+','+str(timestamp)+','+str(value) pycom.heartbeat(True) s.send(message) i = i+ 1 print(message) pycom.heartbeat(False) pycom.rgbled(0xff00) f = open('/sd/A_3001SF8.txt', 'a+') f.write(message) f.write(' ') f.write('\n') f.close()Kindly please have a look into this issue and guide me so i can continue my work to calculate the packet loss etc., Thanks a lot in advance and have a nice day.
Best Regards,
Sita
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Dear @sita,
I got an issue again with this Guru meditation error.
@andreas said in Guru Meditation Error:
If core panics are still happening, I will be happy to receive respective core dumps from it. If you could share the MicroPython code it would even be better in order to reproduce the problem.
With kind regards,
Andreas.
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Hello @andreas,
I got an issue again with this Guru meditation error. While sending the data suddenly this error is coming, if i switch off and on the battery data is transferring normally. Because of this discontinuity i am not able to calculate the packet loss. Is there any solution for this ?
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@sita said in Guru Meditation Error:
Now it is working fine, data also receiving now. :)
Thanks for letting me know. Please tell me if things are still stable after longer runtimes.
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Hello @andreas,
i have done the procedure according to [1] and vanilla Dragonfly build also done again. Now it is working fine, data also receiving now. :):)
Thank you once again for the immediate responses.[1] https://community.hiveeyes.org/t/core-panics-with-the-dragonfly-build-on-the-lopy4/2878
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Dear @sita,
others are observing similar things on the LoPy4, even with the Dragonfly builds [1]. Are there any chances you could share the MicroPython code and respective core dumps you are receiving while running Dragonfly?
Regarding
Smart Provisioning started in the background.
Are you sure you have been running the vanilla Dragonfly build here? It actually looks like a Pybytes variant. Please try again using the vanilla variant.
Thanks already and with kind regards,
Andreas.[1] https://community.hiveeyes.org/t/core-panics-with-the-dragonfly-build-on-the-lopy4/2878
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@sita The best method for a factory reset is performing a full flash erase using esptool.py.
Using a previous firmware release will get you away from the pybytes stuff. Since the flash use between v1.20.x and the previous ones has changed, a flash erase is useful anytime you cross that version border.
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@robert-hh Thanks for the immediate response.
I have checked all the parameters and they are same for both the devices. And i have connected antennas also right way,still i am not reeving any data and getting same problem again (Guru Meditation Error: Core 0 panic'ed) :(one more problem is the below one is not working for factory reset.
import os
os.mkfs('/flash')one question is , if i downgrade the firmware is there any use ?? if so which version is preferable ?
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@sita Please check, that:
a) you have set both device to the same communication parameters, like frequency, spreading factor, bandwidth
b) that you use the right antenna connector
c) that you start both device with power-up or hard reset.
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@robert-hh Thanks for the information. After adding that pybytes_config.json file also i am not received data,only getting this message(shown in the below fig). My project is mainly focusing on the received data and i have to analyze it. so could you please help me with this problem.
Thanks in advance
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@sita That's fine now. Pybytes does not start, and the AP should be enabled. If you use Pybytes, then you might set that to true again. I have not documentation about the mechanism. I had to reverse-engineer that method of disabling. Pycom also did not say or write anything about it. It seems very unfriendly to push it's customers into a non-working configuration.
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@robert-hh
Thanks for response but i am not fully aware of pybytes_config.json. I just placed a file on the device and in that file i have kept { "pybytes_autostart": false }.
I got response like this(shown in the below image). I am not sure whether it is right or wrong!!!
Could i get any document or web link related to this issue so that i will do accordingly.Thanks in advance
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@sita "Smart Provisioning" is done by the Pybytes firmware, which makes the device hard to use if you do not need it. The firmware images provided by @andreas do not have that. You can disable it by placing a file on you device with the name
pybytes_config.json, and the content:{ "pybytes_autostart": false }
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Hello @andreas,
Thanks for the immediate response. I have erased the device using [1] and updated the new firmware.
But now i got another issue;
I am doing pure LoRa communication (Lopy4 to Lopy4 only). I kept one Lopy4 as transmitter and other as receiver. Transmitter sending data without any problem but receiver is not receiving the data, it is giving message like this
I do not have any idea regarding smart provisioning. Could you please suggest me how to overcome this issue.
Thanks in advance[1] https://community.hiveeyes.org/t/testing-the-custom-dragonfly-builds-on-pycom-devices/2746
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Dear @sita,
you might want to try one of our dragonfly builds [1]. Some have been successful mitigating spurious core panics with it.
If core panics are still happening, I will be happy to receive respective core dumps from it. If you could share the MicroPython code it would even be better in order to reproduce the problem.
With kind regards,
Andreas.[1] https://community.hiveeyes.org/t/testing-the-custom-dragonfly-builds-on-pycom-devices/2746
