Search found 5 matches

by dima0905
Wed Jul 01, 2020 3:32 pm
Forum: Hardware
Topic: ESP32-CAM sends corrupted picture
Replies: 5
Views: 10607

Re: ESP32-CAM sends corrupted picture

It was solved by a very strange way. I just added the call of ESP_ERROR_CHECK(esp_wifi_set_ps(WIFI_PS_NONE)); after ESP_ERROR_CHECK( esp_wifi_start() );
No one corrupted picture hasn't appeared since while.
by dima0905
Sun Apr 19, 2020 11:59 am
Forum: Hardware
Topic: ESP32-CAM sends corrupted picture
Replies: 5
Views: 10607

Re: ESP32-CAM sends corrupted picture

I suspect that LEDC which feeds XCLK and I2C use the various timers and it can cause synchronization issues. I've been playing with the ov2640 registers and noticed that as less errors as higher PCLK. Now I check structure of obtained JPEG and skip corrupted. It allows avoiding 80% spoiled pictures.
by dima0905
Wed Apr 15, 2020 6:27 pm
Forum: Hardware
Topic: ESP32-CAM: what is the maximum capacity of the microSD card ?
Replies: 9
Views: 94635

Re: ESP32-CAM: what is the maximum capacity of the microSD card ?

I think it's specified by file system FAT-32
by dima0905
Wed Apr 15, 2020 3:03 pm
Forum: Hardware
Topic: ESP32-CAM sends corrupted picture
Replies: 5
Views: 10607

ESP32-CAM sends corrupted picture

I installed subj with ov2640 for watching but sometimes I obtain corrupted in such way picture (loss horiz sync?)
133ea1936fe4f22bdc0ca448f0502e2333005.jpg
133ea1936fe4f22bdc0ca448f0502e2333005.jpg (13.76 KiB) Viewed 10607 times
What is the cause of this? What is the reason? Does it bug of camera?

XCLK 20Mhz. no divided on PLL resl 640x480
by dima0905
Mon Jan 20, 2020 9:04 pm
Forum: General Discussion
Topic: File upload using socket succeeds but not with esp_http_client
Replies: 14
Views: 19115

Re: File upload using socket succeeds but not with esp_http_client

Hi. I was trying to upload file but my server on clojure (ring.adapter.jetty) determines a error. I pointed on array with data in function esp_http_client_set_post_field(...)