mhz19,bertrik

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ESP8266 arduino project to read a CO2 value from a MH-Z19 sensor and post it on MQTT

License: MIT License

Makefile 1.29% C++ 98.71%

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Reboot during exchange_command

Hi,
I tried your library with a NodeMCU Lolin v3 and it keeps restarting.

I have added a debug, so I know that read_temp_co2 start and exchange_command start but it seems that exchange_command never ends.
Here is what I get in the serial monitor:

Soft WDT reset

ctx: cont 
sp: 3ffffce0 end: 3fffffd0 offset: 01b0

>>>stack>>>
3ffffe90:  3ffefa24 000001f2 3ffffebd 00000028  
3ffffea0:  3ffef768 00000008 3ffffeb0 402075bc <
3ffffeb0:  63786528 676e6168 6f635f65 6e616d6d  
3ffffec0:  65202964 61686378 5f65676e 6d6d6f63  
3ffffed0:  20646e61 0a646e65 3fff1400 401006a8  
3ffffee0:  00335116 4bc6a7f0 00335116 00000000  
3ffffef0:  00335116 00000000 00418937 00000000  
3fffff00:  00000001 00000277 40106669 4bc6a7f0  
3fffff10:  00000000 ff000000 3ffefa48 3fffff69  
3fffff20:  000f3093 00000008 3fffff68 40208878  
3fffff30:  3ffe89d8 3ffef768 3fffff7c 3ffef728  
3fffff40:  3fffdad0 00000000 3ffef768 40202a9e  
3fffff50:  1101a8c0 00ffffff 3ffefa48 40207a08  
3fffff60:  008601ff 00000000 3ffefa79 40202934  
3fffff70:  40208ac8 1101a8c0 00000000 00000000  
3fffff80:  00000000 00000000 3ffefa48 40202848  
3fffff90:  00000251 1101a8c0 3ffefa48 3ffefb20  
3fffffa0:  3fffdad0 00000000 3ffefa48 3ffefb20  
3fffffb0:  3fffdad0 00000000 3ffefb18 4020830c  
3fffffc0:  feefeffe feefeffe 3ffe85e8 40100739  
<<<stack<<<

 ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x4010f000, len 1384, room 16 
tail 8
chksum 0x2d
csum 0x2d
vbb28d4a3
~ld
MHZ19 ESP reader

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