ESP8266 Community Forum

- Sat May 14, 2022 7:53 pm #94528

Thank you, that answers my major question. Rather than ask for a fish dinner on the details, is there some online documentation I could read that would dive deeper into this?

Wasn't sure if your reply is to me or J.A., so I'll assume me. Fish Dinner

I don't want to sound like some kind of expert on flash. If you're asking, Did I find any on the Internet? On the Internet, I found nothing giving any numbers. In fact, the aspect I observed - That the erase duration took longer as the flash "aged" was never found in any literature.

If you're asking about my tests - I only destroyed (3) ESP8266, ESP-01S so inferring that all flash or even another brand that might be on another ESP8266 is pre-mature. The variability also is concerning... 400K to 900K out of three gives a very poor statistical "average". If you're doing something that writes once a day... I wouldn't worry much about it. If you're writing something once a minute, you ought to go to the trouble of doing some kind of wear leveling.

In my library, I also store up to 5 SSID/Password pairs along with other stuff. I just append it to the last written area until I fill up the 4K sector... then I erase and write it at the beginning again.

Sadistic abuse of ESP8266 - https://www.esp8266.com/viewtopic.php?f=6&t=23141

3 lines of code = Complete IoT, App, Web Server
w/ GUI Admin Client, Drag & Drop File Manager, OTA Built-In, Access Point Manager,
Performance Metrics, Web Socket Comms, App API, All running on ESP8266...
Even usable on ESP-01S --- Please check it out!
https://inqonthat.com/inqportal-the-three-line-promise/
https://InqOnThat.com/inqportal

- Sat Jun 18, 2022 5:12 am #94788 What if I simply call WiFi.begin("myssid", "mypass", channel, bssid) at the begin of my sketch? Will these values be written on flash at every boot even if they do not change?

EDIT: never mind, I did few tests, it seems to overwrite the WiFi configuration everytime I call it, so I switched to WiFi.begin() which reuses the old credential without overwriting them.

- Wed Dec 14, 2022 11:45 pm #95636

What if I simply call WiFi.begin("myssid", "mypass", channel, bssid) at the begin of my sketch? Will these values be written on flash at every boot even if they do not change?

EDIT: never mind, I did few tests, it seems to overwrite the WiFi configuration everytime I call it, so I switched to WiFi.begin() which reuses the old credential without overwriting them.

Hey Fabian, would you be able to expand a little on how you determined the 4 arg .begin was overwriting the station_config every time it was called? This might be important for sketches that still call any of the begin overrides, besides .begin(void).