Search found 8 matches

by dn_1983
Tue Apr 22, 2025 4:00 pm
Forum: ESP8266
Topic: Disabling "please start sntp first" message
Replies: 0
Views: 7910

Disabling "please start sntp first" message

Hello.

I use time related functions, and before WiFi connection established, I got "please start sntp first" message.

I didn't find possibility to disable this specific message.

Maybe, somebody knows how to deal with it.

Thank you.
by dn_1983
Mon Apr 21, 2025 7:44 am
Forum: ESP8266
Topic: Details of os_delay_us function
Replies: 3
Views: 8425

Re: Details of os_delay_us function

Thank you for clarification.
by dn_1983
Thu Apr 17, 2025 7:44 am
Forum: ESP8266
Topic: Details of os_delay_us function
Replies: 3
Views: 8425

Details of os_delay_us function

Hello.

I am a newbie at ESP.

I can't find verbose information about os_delay_us function.

Could somebody advise me about these questions:

1. Are the interrupts enabled during this function?
2. What is the accuracy of this delay?

Thank you.
by dn_1983
Thu Apr 17, 2025 6:40 am
Forum: Hardware
Topic: Flash resource for ESP8285
Replies: 7
Views: 286

Re: Flash resource for ESP8285

Just a note: With flash memory, "alive" is relative.
You are right, thanks for the clarification.
by dn_1983
Wed Apr 16, 2025 4:29 pm
Forum: Hardware
Topic: Flash resource for ESP8285
Replies: 7
Views: 286

Re: Flash resource for ESP8285

I would like to share my researches.

Firstly, I've done measurements with help of oscilloscope.
Operation of writing consists of two stages: erase sector(obligatory) and then write sector.
Erasing one sector takes about 48ms, while writing takes just 2.2ms.

After this, I decided to write one ...
by dn_1983
Tue Apr 08, 2025 6:41 am
Forum: Hardware
Topic: Flash resource for ESP8285
Replies: 7
Views: 286

Re: Flash resource for ESP8266

One more question.
How much time does it take to write one sector (in ms) for ESP8285?

P.S. Could you please rename this topic from "Flash resource for ESP8266" to "Flash resource for ESP8285"?

Thank you.
by dn_1983
Mon Apr 07, 2025 11:19 am
Forum: Hardware
Topic: Flash resource for ESP8285
Replies: 7
Views: 286

Re: Flash resource for ESP8266

(as the ESP8266 does not have built-in flash)
Sorry, I wrote wrong information.
I use ESP8285 chip, which has internal flash memory.

Could you please share information for this chip?
by dn_1983
Mon Apr 07, 2025 8:19 am
Forum: Hardware
Topic: Flash resource for ESP8285
Replies: 7
Views: 286

Flash resource for ESP8285

Hello.

I didn't find official information, what is resource of ESP8266 flash memory, how many cycles can I re-write it?

Thank you.

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