Search found 30 matches

by andrew_p
Fri Feb 03, 2017 9:21 pm
Forum: General Discussion
Topic: Reset counter
Replies: 1
Views: 3909

Reset counter

Have a question.. Is there any way to get a number of resets since the power up?
by andrew_p
Tue Jan 17, 2017 3:05 pm
Forum: General Discussion
Topic: ESP32 and CR2032 battery
Replies: 15
Views: 49531

Re: ESP32 and CR2032 battery

rudi ;-) wrote: there was tested LIR2450, CR2032 and other in parallel mode too.
I'm looking at LIR2450, datasheet says max discharge current is about 200mAh, which may not be sufficient for ESP32 boot, according to ESP_Sprite post above
by andrew_p
Mon Jan 16, 2017 6:21 pm
Forum: General Discussion
Topic: ESP32 and CR2032 battery
Replies: 15
Views: 49531

Re: ESP32 and CR2032 battery

I'm looking for a possible battery options for a simple prototype, which performs the following cycle: 1. Power is on 2. Connect to WiFi 3. Send email/HTTPS request 4. Turn itself off (cut the power) Since CR2032 does not look like an option, what would be a good choice? And how many cycles (like 1-...
by andrew_p
Sun Jan 15, 2017 11:10 pm
Forum: General Discussion
Topic: ESP32 and CR2032 battery
Replies: 15
Views: 49531

ESP32 and CR2032 battery

My understanding is that ESP32 should be able to run on CR2032, but I have no success with that. Trying a simple hello_world example works fine with an external 3v power source, but switching to battery a throws the following error: I (65) boot: Partition Table: I (71) boot: ## Label Usage Type ST O...
by andrew_p
Sun Jan 15, 2017 7:00 pm
Forum: General Discussion
Topic: I think I just bricked ESP32
Replies: 2
Views: 5425

Re: I think I just bricked ESP32

Erasing flash with esptool.py helped! Thanks!
by andrew_p
Sun Jan 15, 2017 1:51 am
Forum: General Discussion
Topic: I think I just bricked ESP32
Replies: 2
Views: 5425

I think I just bricked ESP32

I was playing with Sparkfun ESP32 thing and then it stopped working properly. I can flash it, but any code (working applications) I try it just doesn't work. This is the log from a serial monitor, and the log is the same for any code I flash: I (2660) cpu_start: Pro cpu up. I (2695) cpu_start: Start...
by andrew_p
Tue Jan 10, 2017 1:17 am
Forum: General Discussion
Topic: ESP32 as an Access Point with the ability to store WiFi credentials (and other configurational data)
Replies: 5
Views: 19637

ESP32 as an Access Point with the ability to store WiFi credentials (and other configurational data)

ESP32 provides a great API for managing WiFi connections and I'm looking for code example/snippets, which would allow to accomplish the following: 1. When ESP32 starts if verifies if there is any configurational data stored. 2. If there is NO configurational data, then it runs in a WiFi Access Point...
by andrew_p
Tue Jan 10, 2017 12:12 am
Forum: ESP-IDF
Topic: Wake Up from GPIO
Replies: 8
Views: 14944

Re: Wake Up from GPIO

Alexis wrote:I'm able to set the ESP32 in Deep Sleep and wake it up with External Wake Up.
Hi Alexis,
is there any chance you can share deep sleep / external wake up example code?
by andrew_p
Thu Jan 05, 2017 4:43 am
Forum: ESP-IDF
Topic: [Resolved] Is mbedtls on ESP32 particularly slow?
Replies: 4
Views: 9324

Re: Is mbedtls on ESP32 particularly slow?

I'm using example4 with POST request and the correct certificate for my server and it's pretty fast: I (41756) example: Starting again! I (41756) example: Connected to AP I (41756) example: Connecting to XXXXX.com:443... I (42036) example: Connected. I (42036) example: Performing the SSL/TLS handsha...
by andrew_p
Thu Jan 05, 2017 3:07 am
Forum: General Discussion
Topic: HTTP requests (GET, POST etc.) on ESP32
Replies: 21
Views: 54662

Re: HTTP requests (GET, POST etc.) on ESP32

WiFive wrote: Well it can't really be secure if it is not verified, so it is just encrypted....by someone
Yes, I finally got it.. I just took a root certificate from my remote server, installed on ESP32 and now ESP32 can verify that the server is my real and indeed trusted server. Thanks!