ESP8266 Community Forum

- Sat Aug 06, 2016 2:31 pm #52325

Useless in the way that is doing what it is suppose to ?

The datasheet specifies that ESP can be used in voltages between 3.0V to 3.6V. Anything else is outside this range and function of the chip is not guaranteed - maybe this is reason for software failures You are facing. Did You check for example power requirements of flash memory inside Your ESP module?

- Sat Aug 06, 2016 2:49 pm #52329 I now have 12v going through a 3.3v reg and it crashing everything is crashing, see here as well seriously had enough of this wasted two days, need to get back to my machine learning lectures, I am giving up with esp as of now.

viewtopic.php?f=28&t=11167&start=12

Code: Select allSystem Initiating...
Mounted file system!
Failed to load json config

Exception (3):
epc1=0x40100221 epc2=0x00000000 epc3=0x00000000 excvaddr=0x40012cb0 depc=0x00000000

ctx: cont
sp: 3fff1fe0 end: 3fff2380 offset: 01a0

>>>stack>>>
3fff2180:  3fff126c 000004d4 000004d4 4010020c 
3fff2190:  00000484 4024b190 000003fd 4010068c 
3fff21a0:  40105dbe 3fff4ed4 000003fd 40107314 
3fff21b0:  40229c6e 000003fd 4024b190 40229c8b 
3fff21c0:  3fff535c 40229cf1 3fff4ed4 000003ff 
3fff21d0:  000003fd 3fff2280 3fff4ed4 000003fd 
3fff21e0:  ffffff00 55aa55aa 0000001a 0000001c 
3fff21f0:  0000001c 0000008b 00000089 000003ff 
3fff2200:  4022a0e0 3fff4ed4 3fff4ed4 000000ff 
3fff2210:  00000001 3fff22a0 4022a267 00000008 
3fff2220:  3fff4ed4 000000ff 3fff2280 00000000 
3fff2230:  3fff4f94 3fff22e1 00000001 4022a2f4 
3fff2240:  3fff2280 3fff4ed4 3fff0f64 3fff0f58 
3fff2250:  3fff22a0 3fffb20c 3fff4ed4 3fff0f64 
3fff2260:  4022a330 3fff1104 00000000 40107314 
3fff2270:  402085fc 000003ff 4024b190 40229c8b 
3fff2280:  3fff3500 40229d31 3fff4ed4 000003ff 
3fff2290:  3fff126c 00000443 00000443 4010020c 
3fff22a0:  3fff0f00 00000001 00000001 4010068c 
3fff22b0:  0000001c 0000008b 00000089 40107314 
3fff22c0:  40229b3d 00000001 00000001 40229b54 
3fff22d0:  3fff4ed4 40229b8a 00000001 3ffeac8c 
3fff22e0:  402083cf 3ffeac8c 3ffeac8c 40209e00 
3fff22f0:  3ffe9508 3ffeac8c 3fff1104 40207441 
3fff2300:  3fff0f64 3ffeac8c 3fff457c 40207b04 
3fff2310:  feefeffe feefeffe feefeffe feefeffe 
3fff2320:  feefeffe feefeffe feefeffe feefeffe 
3fff2330:  feefeffe feefeffe feefeffe feefeffe 
3fff2340:  feefeffe feefeffe feefeffe feefeffe 
3fff2350:  feefeffe feefeffe feefeffe 3fff1350 
3fff2360:  3fffdad0 00000000 3fff1348 40210470 
3fff2370:  feefeffe feefeffe 3fff1360 40100718 
<<<stack<<<
c_ÇrSöfj

DECODE:

Code: Select allDecoding 30 results
0x4010020c: _umm_free at C:\Users\Usuario\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266\umm_malloc/umm_malloc.c line 1287
0x4024b190: sntp_getservername at ?? line ?
0x4010068c: free at C:\Users\Usuario\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266\umm_malloc/umm_malloc.c line 1733
0x40105dbe: spi_flash_read at ?? line ?
0x40107314: vPortFree at C:\Users\Usuario\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266/heap.c line 18
0x40229c6e: wifi_param_save_protect_with_check at ?? line ?
0x4024b190: sntp_getservername at ?? line ?
0x40229c8b: wifi_param_save_protect_with_check at ?? line ?
0x40229cf1: system_param_save_with_protect at ?? line ?
0x4022a0e0: wifi_station_ap_number_set at ?? line ?
0x4022a267: wifi_station_ap_number_set at ?? line ?
0x4022a2f4: wifi_station_ap_number_set at ?? line ?
0x4022a330: wifi_station_set_config at ?? line ?
0x40107314: vPortFree at C:\Users\Usuario\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266/heap.c line 18
0x402085fc: ESP8266WiFiSTAClass::disconnect(bool) at C:\Users\Usuario\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\libraries\ESP8266WiFi\src/ESP8266WiFiSTA.cpp line 510
0x4024b190: sntp_getservername at ?? line ?
0x40229c8b: wifi_param_save_protect_with_check at ?? line ?
0x40229d31: system_param_save_with_protect at ?? line ?
0x4010020c: _umm_free at C:\Users\Usuario\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266\umm_malloc/umm_malloc.c line 1287
0x4010068c: free at C:\Users\Usuario\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266\umm_malloc/umm_malloc.c line 1733
0x40107314: vPortFree at C:\Users\Usuario\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266/heap.c line 18
0x40229b3d: wifi_set_broadcast_if at ?? line ?
0x40229b54: wifi_set_broadcast_if at ?? line ?
0x40229b8a: wifi_set_opmode at ?? line ?
0x402083cf: ESP8266WiFiGenericClass::mode(WiFiMode) at c:\users\usuario\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2\xtensa-lx106-elf\include\c++\4.8.2/functional line 1954
0x40209e00: HTTPUpload::HTTPUpload() at C:\Users\Usuario\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\libraries\ESP8266WebServer\src\detail/RequestHandlersImpl.h line 53
0x40207441: initiateAccessPoint() at C:\Users\Usuario\Transporter\TECHNOLOGIES-IoT\_TechBubbleProductMasters\Devices\ThermaSenseDS\ThermaSenseDS/ThermaSenseDS.ino line 319
0x40207b04: setup at C:\Users\Usuario\Transporter\TECHNOLOGIES-IoT\_TechBubbleProductMasters\Devices\ThermaSenseDS\ThermaSenseDS/ThermaSenseDS.ino line 392
0x40210470: loop_wrapper at C:\Users\Usuario\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266/core_esp8266_main.cpp line 56
0x40100718: cont_norm at C:\Users\Usuario\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266/cont.S line 109


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- Sat Aug 06, 2016 2:59 pm #52333 Ok, so can You please do following things?:
1. flash the module with stock AT firmware and boot it up - this prepare internal wifi configuration area so we can rely that WiFi stack configuration is ok
2. format SPIFFS, for example upload some files using Arduino IDE
3. simplify Your code - do simple steps one after one so we can see where the problem is
TRY TO USE WiFi.persistent(false) SO FLASH WIFI CONFIGURATION WILL NOT BE OVERWRITTEN / at least for now.
I've so far never noticed problem with disappearing files from SPIFFS until I've changed the memory layout in IDE.

- Sat Aug 06, 2016 3:02 pm #52335

Ok, so can You please do following things?:
1. flash the module with stock AT firmware and boot it up - this prepare internal wifi configuration area so we can rely that WiFi stack configuration is ok
2. format SPIFFS, for example upload some files using Arduino IDE
3. simplify Your code - do simple steps one after one so we can see where the problem is
TRY TO USE WiFi.persistent(false) SO FLASH WIFI CONFIGURATION WILL NOT BE OVERWRITTEN / at least for now.
I've so far never noticed problem with disappearing files from SPIFFS until I've changed the memory layout in IDE.

The spiffs overwrite is the first time that happened. I have reformatted and uploaded a new spiffs file many times, the key to what is happening here I believe is changing the flash size in IDE

Amazing selection of ESP8266 and ESP32 modules can be found here.