pytrack: loses gps fix then crashes

[ozeta]

wipy2.0

os.uname()=

(sysname='WiPy', nodename='WiPy', release='1.7.5.b2', version='v1.8.6-694-g25826866 on 2017-06-29', machine='WiPy with E
SP32')

pytrack dfu ver: 0.0.3

1. loaded pytrack.py,L76GNSS.py and other classes from pycom github repo into /lib
2. created the attached code (inside zip archive):
   gpsNtpSaveTest_cpy.zip

after some seconds of getting cordinates into the while loop, l76.coordinates() starts alternating (None,None)
and the correct values.

after another some seconds the device rebooted by itself

[jmarcelino]

Have you tried the new PyTrack firmware (0.0.4)? Sounds like it could help https://forum.pycom.io/topic/1497/new-pytrack-and-pysense-firmware-release-0-0-4

[ozeta]

I didn't get the new on the forum. I'll install and try it asap and I'll let you know!

[ozeta]

Just tested, it keeps crashing:

the first exception is this:

Guru Meditation Error of type LoadProhibited occurred on core  0. Exception was unhandled.                              
Register dump:                                                                                                          
PC      : 0x40086b35  PS      : 0x00060033  A0      : 0x400880bb  A1      : 0x3ffc5950                                  
A2      : 0x00050023  A3      : 0x00000000  A4      : 0x00000001  A5      : 0x3ffc3cc8                                  
A6      : 0x3ff000dc  A7      : 0x00000001  A8      : 0x00000005  A9      : 0x00000001                                  
A10     : 0x3ffc3d34  A11     : 0x00000000  A12     : 0x3ffc3d34  A13     : 0x00000000                                  
A14     : 0x00000000  A15     : 0x00000000  SAR     : 0x00000011  EXCCAUSE: 0x0000001c                                  
EXCVADDR: 0x00000048  LBEG    : 0x4000c2e0  LEND    : 0x4000c2f6  LCOUNT  : 0x00000000                                  
                                                                                                                        
Backtrace: 0x40086b35:0x3ffc5950 0x400880bb:0x3ffc5970 0x40088075:0x4000bff0         

then it keeps trowing exception and the backtrace keeps getting bigger:

this is after some throwing

Guru Meditation Error of type LoadProhibited occurred on core  0. Exception was unhandled.                              
Register dump:                                                                                                          
PC      : 0x40088b1a  PS      : 0x00060033  A0      : 0x80087b1c  A1      : 0x3ffc4e10                                  
A2      : 0x3ffc4e60  A3      : 0x3ffc4e30  A4      : 0x00000020  A5      : 0x3ffc3d2c                                  
A6      : 0x3ffc54d0  A7      : 0x3ffc53f0  A8      : 0x00000000  A9      : 0x00000000                                  
A10     : 0x3ffc4e60  A11     : 0x3ffc3d34  A12     : 0x00000000  A13     : 0x3ffc51f0                                  
A14     : 0x3ffc5220  A15     : 0x00000020  SAR     : 0x0000001a  EXCCAUSE: 0x0000001c                                  
EXCVADDR: 0x00000000  LBEG    : 0x4000c2e0  LEND    : 0x4000c2f6  LCOUNT  : 0x00000000                                  
                                                                                                                        
Backtrace: 0x40088b1a:0x3ffc4e10 0x40087b1c:0x3ffc4e30 0x400893a4:0x3ffc4e60 0x40089719:0x3ffc5030 0x40089084:0x3ffc5070
 0x400891db:0x3ffc50f0 0x40081535:0x3ffc5110 0x40088b1a:0x3ffc51d0 0x40088b1a:0x3ffc51f0 0x400893a4:0x3ffc5220 0x4008971
9:0x3ffc53f0 0x40089084:0x3ffc5430 0x400891db:0x3ffc54b0 0x40081535:0x3ffc54d0 0x40088b1a:0x3ffc5590 0x40088b1a:0x3ffc55
b0 0x400893a4:0x3ffc55e0 0x40089719:0x3ffc57b0 0x40089084:0x3ffc57f0 0x400891db:0x3ffc5870 0x40081535:0x3ffc5890 0x40086
b35:0x3ffc5950 0x40086b35:0x3ffc5970 0x40088075:0x4000bff0                                                             

at last, only the backtrace is printed:

Backtrace: 0x40088ade:0x3ffc3010 0x40087b1c:0x3ffc3030 0x400893a4:0x3ffc3060 0x40089719:0x3ffc3230 0x40089084:0x3ffc3270
 0x400891db:0x3ffc32f0 0x40081535:0x3ffc3310 0x40088ade:0x3ffc33d0 0x40088ade:0x3ffc33f0 0x400893a4:0x3ffc3420 0x4008971
9:0x3ffc35f0 0x40089084:0x3ffc3630 0x400891db:0x3ffc36b0 0x40081535:0x3ffc36d0 0x40088ade:0x3ffc3790 0x40088ade:0x3ffc37
b0 0x400893a4:0x3ffc37e0 0x40089719:0x3ffc39b0 0x40089084:0x3ffc39f0 0x400891db:0x3ffc3a70 0x40081535:0x3ffc3a90 0x40088
ade:0x3ffc3b50 0x40088ade:0x3ffc3b70 0x400893a4:0x3ffc3ba0 0x40089719:0x3ffc3d70 0x40089084:0x3ffc3db0 0x400891db:0x3ffc
3e30 0x40081535:0x3ffc3e50 0x40088b1a:0x3ffc3f10 0x40088b1a:0x3ffc3f30 0x400893a4:0x3ffc3f60 0x40089719:0x3ffc4130 0x400
89084:0x3ffc4170 0x400891db:0x3ffc41f0 0x40081535:0x3ffc4210 0x40088b1a:0x3ffc42d0 0x40088b1a:0x3ffc42f0 0x400893a4:0x3f
fc4320 0x40089719:0x3ffc44f0 0x40089084:0x3ffc4530 0x400891db:0x3ffc45b0 0x40081535:0x3ffc45d0 0x40088b1a:0x3ffc4690 0x4
0088b1a:0x3ffc46b0 0x400893a4:0x3ffc46e0 0x40089719:0x3ffc48b0 0x40089084:0x3ffc48f0 0x400891db:0x3ffc4970 0x40081535:0x
3ffc4990 0x40088b1a:0x3ffc4a50 0x40088b1a:0x3ffc4a70         

and finally, it reboots:

uru Meditation Error of type Guru Meditation Error of type Guru Meditation Error of type Guru Med�@p)�?Error of typ�@3@
 0�@3��40088cad��3ff81fd0@@ 0�@3��4008147b��3fffffe4@@ 0�@3@ 0�@3��40088caa��3fffffe4@0@d-�?00000000�%�?d-�?3ff82044$6�?
ets Jun  8 2016 00:22:57                                                                                                
                                                                                                                        
rst:0x9 (RTCWDT_SYS_RESET),boot:0x17 (SPI_FAST_FLASH_BOOT)                                                              
configsip: 0, SPIWP:0x00                                                                                                
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00                                                 
mode:QIO, clock div:2                                                                                                   
load:0x3fff9010,len:12                                                                                                  
ho 0 tail 12 room 4                                                                                                     
load:0x3fff9020,len:388                                                                                                 
load:0x40078000,len:11412                                                                                               
load:0x4009fc00,len:848                                                                                                 
entry 0x4009fd9c                                                                                                        
MicroPython v1.8.6-694-g25826866 on 2017-06-29; WiPy with ESP32                                                         
Type "help()" for more information.                                     

[jmarcelino]

Not sure if it help but can't hurt to update the firmware on the WiPy as well, version 1.7.6b1 is available
https://forum.pycom.io/topic/1457/new-firmware-release-1-7-6-b1

[ozeta]

just installed new firmware, is there a way to copy paste the repl full output?

pytrack is now more stable. before 1.7.6b1 it started getting no coords, then crashed after 100-120 cycles.
now it has run for for 1000 cycles more or less, however, after the first 100, it started alternating good reading with none.

I changed a bit the script:

while True:
    print("i: {} loc: {} memfree: {}".format(i, l76.coordinates(), gc.mem_free()/1000))
    i += 1

After starting, the memfree is 45.

output at the end:

i: 1010 loc: (40.80619, 14.33766) memfree: 3.68
i: 1011 loc: (None, None) memfree: 4.4
i: 1012 loc: (None, None) memfree: 4.64
i: 1013 loc: (None, None) memfree: 4.48
i: 1014 loc: (40.80619, 14.33766) memfree: 3.44
i: 1015 loc: (None, None) memfree: 4.352
i: 1016 loc: (None, None) memfree: 4.512
i: 1017 loc: (None, None) memfree: 4.384
i: 1018 loc: (None, None) memfree: 4.352
i: 1019 loc: (None, None) memfree: 4.288
i: 1020 loc: (None, None) memfree: 4.464
i: 1021 loc: (None, None) memfree: 4.304
i: 1022 loc: (40.80619, 14.33766) memfree: 3.248
i: 1023 loc: (None, None) memfree: 4.24
Traceback (most recent call last):
  File "<stdin>", line 12, in <module>
  File "/flash/lib/L76GNSS.py", line 42, in coordinates
MemoryError: memory allocation failed, allocating 8192 bytes

[Bucknalla]

Looking into this now! Will report back with what I find! Thanks :)

[Bucknalla]

Hey @ozeta, could you please try this GPS file (https://github.com/pycom/pycom-libraries/blob/develop/pytrack/lib/L76GNSS.py)? I tracked the memory leak down to the alarm function in the GPS lib.

I'm now taking a look at the C lib for the alarm and trying to work out why the alarm objects aren't being released from the heap.

Please let me know if this works for you!

Thanks!

Alex

[ozeta]

it works really good!

772 (40.80623, 14.33749). memfree: 4.5504
773 (40.80623, 14.33749). memfree: 4.5120
774 (40.80623, 14.33749). memfree: 4.6112
775 (40.80623, 14.33749). memfree: 4.5184

thanks!

[Bucknalla]

Great! I'll merge this into the master and close this issue :)