[Coco] WiFi modem.

[Dave Philipsen]

Nice. So is this the ESP8266 board you’re using?

https://www.ebay.com/itm/ESP8266-ESP-01S-Serial-WIFI-Wireless-Module-Adapter-Breakout-Send-Receive-AP-STA/311736436700?hash=item4894f087dc:g:fO4AAOSwSrNaJ8p5

Dave

> On Jan 19, 2018, at 3:32 PM, David Ladd <davidwladd at gmail.com> wrote:
> 
>> On Thu, Jan 18, 2018 at 10:58 PM, Dave Philipsen <dave at davebiz.com> wrote:
>> 
>> That's interesting stuff, Allen.  The "stock" firmware of the ESP8266 uses
>> an AT command set but the actual commands are much different than the Hayes
>> modem.  So I have a couple of questions: 1) How do you update the firmware
>> on the ESP8266?  2) Are all iterations of the ESP8266 the same as far as
>> firmware updates?
>> 
> 
> ​Dave,  I have been using some of these:
> https://www.ebay.com/itm/USB-to-ESP8266-Serial-Module-TTL-Wifi-ESP-01-CH340G-Developent-Board-Adapter/201588307377
> 
> I have one I have patched with a small wire on the GPIO0 to ground so I can
> put the ESP8266-01(S) into programming mode.  Then I use the programming
> software to flash the updated firmware.
> 
> ​Now on my unit I upgraded to the most current firmware as of 3 months ago
> at:
> http://www.espressif.com/en/products/hardware/esp8266ex/overview
> 
> I was able to also put the lock the adapter to a specific WiFi router and
> also set it to always connect to a static IP and port on startup in
> pass-through mode.
> 
> Example of config:
> ​AT+CWMODE_DEF=3
> AT+CWJAP_CUR="SSID","SSID_PASSPHRASE"
> AT+SAVETRANSLINK=1,"IP_OF_DW_TCP_SERVER",PORT_OF_DW_TCP_SERVER,"TCP"
> ​
> ​The only drawback I had to this setup is I had to reflash the device to
> get out of this mode.  I couldn't get it to return to command mode, but it
> did at least work well as a pass-through device.
> 
> Then I got busy on another project and haven't tested it with a MAX3232
> chip and connecting to the bitbanger port yet to see if I can get it to
> work as a WiFi/TCP serial bridge.​
> 
> 
> 
>> 
>> I have a few of the ultra-cheap Chinese eBay ESP8266 boards but I've
>> noticed that there are some other slightly different designs out there too.
> 
> 
> 
> ​The ESP8266-01S seems to be the newer version of the module with a LED and
> I think more flash storage.​
> 
> 
> 
>> 
>> 
>> 
>> Dave
>> ​<cut>​
>> 
> 
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> | David Ladd a.k.a. PacoOtaktay a.k.a. Drencor                          |
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