Search found 1532 matches

by kolban
Fri Jun 22, 2018 12:52 am
Forum: General Discussion
Topic: how to resolve packet loss issue?
Replies: 9
Views: 146

Re: how to resolve packet loss issue?

Over multiple tests, is it the same "piece" of the received file that differs from the original file? Can we tell where data is being lost? Are you logging the lengths of received data and sent data? I'd like to determine whether the problem is in transmitting data or writing files. For ex...
by kolban
Thu Jun 21, 2018 10:52 pm
Forum: General Discussion
Topic: trying to read an ADC GPIO
Replies: 7
Views: 114

Re: trying to read an ADC GPIO

I'd suggest wiring GPIO 35 directly to 3.3V and see if the output is other than 0. That will eliminate half the logic as a problem.
by kolban
Thu Jun 21, 2018 2:18 pm
Forum: General Discussion
Topic: how to resolve packet loss issue?
Replies: 9
Views: 146

Re: how to resolve packet loss issue?

Not really enough to go here (opinion). Is this a TCP or UDP socket? What makes you think that packets get lost? Are you checking the return code from send()?
by kolban
Thu Jun 21, 2018 2:12 pm
Forum: General Discussion
Topic: TCP server: assertion "netconn_alloc: undefined netconn_type" failed
Replies: 2
Views: 62

Re: TCP server: assertion "netconn_alloc: undefined netconn_type" failed

I think it would be useful to know which source statement in the user application is being called which generates the failure. Hopefully it is the same statement each time.
by kolban
Thu Jun 21, 2018 7:26 am
Forum: General Discussion
Topic: Maximum usable nvs in wroom32
Replies: 1
Views: 44

Re: Maximum usable nvs in wroom32

I'm not sure there is a hard-limit on NVS storage other than the amount of flash available and that you allocate. You may have to move the partition to a different location. If it starts at 0x9000 and the next partition starts at 0xf000 then the difference is 24K. You couldn't (for example) make it ...
by kolban
Thu Jun 21, 2018 7:18 am
Forum: ESP32 IDF
Topic: Installation and Use of Eclipse and ESP32 - Newbie on Eclipse
Replies: 1
Views: 66

Re: Installation and Use of Eclipse and ESP32 - Newbie on Eclipse

Howdy and welcome to the forum.

Here is a link to a good write-up on using Eclipse with ESP32.

http://esp-idf.readthedocs.io/en/latest ... setup.html
by kolban
Thu Jun 21, 2018 4:10 am
Forum: ESP32 IDF
Topic: (xQueueGenericReceive)- assert failed! after esp_wifi_scan_get_ap_records()
Replies: 2
Views: 58

Re: (xQueueGenericReceive)- assert failed! after esp_wifi_scan_get_ap_records()

I'll stick my neck out and say your problem is here: ESP_ERROR_CHECK(esp_wifi_scan_get_ap_records(&num_of_scanned_aps, &ap_records)); This statement asks to retrieve "num_of_scanned_ap" records and place them in the storage pointed to by "&ap_records". However, your d...
by kolban
Wed Jun 20, 2018 4:21 pm
Forum: General Discussion
Topic: libesphttpd on ESP32 using FreeRTOS under esp-idf
Replies: 1
Views: 64

Re: libesphttpd on ESP32 using FreeRTOS under esp-idf

If you are a fan of the C++ language then I'd like to point you to this possibility:

https://github.com/nkolban/esp32-snippe ... Server.pdf

There is also the commercial implementation made by Cesanta Mongoose.

https://github.com/cesanta/mongoose
by kolban
Wed Jun 20, 2018 4:17 pm
Forum: General Discussion
Topic: mDNS component's real time safety
Replies: 1
Views: 45

Re: mDNS component's real time safety

Howdy and welcome to the forum. I haven't looked inside the mDNS component's implementation but my belief is that the internals of such a component are free to use whichever technology/implementations that makes sense to them as long as the result satisfies the contract of usage. I haven't seen anyw...
by kolban
Wed Jun 20, 2018 3:54 am
Forum: Hardware
Topic: Difference between SPI Boot and Download Boot
Replies: 1
Views: 77

Re: Difference between SPI Boot and Download Boot

My understanding is that SPI boot is a "normal" boot meaning that the application logic found in SPI flash is loaded and branched to. With download boot, the ESP32 does not load the program in flash but instead runs a program found in ROM that starts reading the UART port. It expects to fi...

Go to advanced search