ESP-WROOM-02 not supported properly

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papperone
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Joined: 04 Oct 2016, 23:16

ESP-WROOM-02 not supported properly

#1 Post by papperone » 07 Aug 2017, 13:24

Just got a mail-in of a test module I ordered, which is basically ESP with 18650 battery holder and charger, all in one board.
Issue is that it contains ESP-WROOM-02 module, which is basically ESP8266EX with 2Mb of memory (yes, weird but that's it!).
I managed to flash ESPEasy via ArduinoIDE with custom compile setting memory as 2M (1M SPIFFs) and its seems to work ok but:
- in the system info this module is still reported as 4096kb flash size
- no way you can flash it with flash tool and the BIN provided are only 1024 or 4096.

Any plan to support this version of the chip officially?
My TINDIE Store where you can find all ESP8266 boards I manufacture --> https://www.tindie.com/stores/GiovanniCas/
My Wiki Project page with self-made PCB/devices --> https://www.letscontrolit.com/wiki/inde ... :Papperone

pacitzu
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Joined: 11 Oct 2015, 16:47

Re: ESP-WROOM-02 not supported properly

#2 Post by pacitzu » 04 Sep 2017, 12:26

Hi,

I found this very interesting board for some home automation projects.
Before buying it I would be sure if I can use it with EspEasy.

PRODINO WIFI
https://www.kmpelectronics.eu/en-us/pro ... i-esp.aspx

This card uses ESP-WROOM-02 from Espressif.
Reading some blogs I found this cpu is similar to Esp-13 and Esp8266MOD.
It has 4 Mbyte flash memory.

https://esp8266hints.wordpress.com/2015 ... id-hedzup/

Will I have many problems compiling EspEasy with Arduino IDE?

To control inputs and outputs "Prodino WIFI" uses MCP23S08 through an SPI interface.
EspEasy does not have this plug-in so I'll have to do it.

Thank you
Emanuele

papperone
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Joined: 04 Oct 2016, 23:16

Re: ESP-WROOM-02 not supported properly

#3 Post by papperone » 04 Sep 2017, 15:11

pacitzu wrote: 04 Sep 2017, 12:26 This card uses ESP-WROOM-02 from Espressif.
Reading some blogs I found this cpu is similar to Esp-13 and Esp8266MOD.
It has 4 Mbyte flash memory.

Not sure where you did read about memory but ESP-WROOM-02 is manufactured with 2Mbyte memory as per Espressif site --> http://espressif.com/en/products/hardwa ... 2/overview
If you read my original post I was able to flash manually ESPEasy on the module using Arduino IDE and custom compile option (2M / 1M SPIFF) but this will not let the OTA enough memory to work (unless the double OTA as described in the Wiki)
My TINDIE Store where you can find all ESP8266 boards I manufacture --> https://www.tindie.com/stores/GiovanniCas/
My Wiki Project page with self-made PCB/devices --> https://www.letscontrolit.com/wiki/inde ... :Papperone

pacitzu
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Posts: 17
Joined: 11 Oct 2015, 16:47

Re: ESP-WROOM-02 not supported properly

#4 Post by pacitzu » 04 Sep 2017, 22:15

Thanks papperone for the suggestions.

There is conflicting information on the manufacturer's website of the "Prodino Wifi"

The board is advertised with 4Mbytes of flash memory but in their Arduino IDE configuration guide they use the following setting:
Flash size: 2M (1M SPIFFS).

https://www.kmpelectronics.eu/en-us/exa ... stall.aspx

So it's possible that I may receive a ESP Wrooom-02 with only a 2Mbytes flash memory.

vrega
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Joined: 16 Mar 2018, 16:06

Re: ESP-WROOM-02 not supported properly

#5 Post by vrega » 16 Mar 2018, 16:12

Hi all,
i've the same board and i've successfully flashed it.
Now i've a problem to let the device connect with my access point.
I select the ssid and put the correct password but it does not connect with it.
I've tried with another access point and it works.
It's very strange because i've other NODEMCU devices with the same firmware and they successfully connect with my Access Point.
another anomaly i've seen is that,after flashing it and connecting with ESP_0 SSID, the nodemcu show me a lot of ssid that it listen,the esp-wroom-d2 shows only one ssid.
Can you help me to solve the problem?
Regards.

dxfantome
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Posts: 11
Joined: 25 Apr 2018, 09:29

Re: ESP-WROOM-02 not supported properly

#6 Post by dxfantome » 25 Apr 2018, 09:30

same problem :-( with wroom 02

xandcapcom
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Joined: 30 Apr 2019, 17:47

Re: ESP-WROOM-02 not supported properly

#7 Post by xandcapcom » 30 Apr 2019, 17:51

Hello, I have the same product, and I can not write the firmware in any way. Could you tell us how you got it?
Thank you

vfontanella
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Posts: 1
Joined: 02 Mar 2020, 00:27

Re: ESP-WROOM-02 not supported properly

#8 Post by vfontanella » 02 Mar 2020, 00:34

Hi All,
Not sure if this still relevant, but I had the same issue and I manage to overcome it updating the esp8266 library and using LOLIN(WEMOS) D1 R2 and mini board using Arduino 1.8.12.
The only thing I couldn't make work yet is OTA. It finishes the update, reset the board but it still with the old program on it.
And seems like is not possible to use the serial monitor using OTA also, such a pity.
Anybody else got this thing working properly?
Cheers,

Vicente.

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