Search found 16 matches
- Tue Nov 19, 2024 1:55 pm
- Forum: ESP32 Arduino
- Topic: disable core 1 for saving power?
- Replies: 8
- Views: 16106
Re: disable core 1 for saving power?
Yes, you can choose "Run FreeRTOS on first core only" option in menuconfig, Component config > FreeRTOS menu and build the application again. That will disable 2nd CPU and all the tasks will run on the 1st. Does this really disable the second core? Or will it be active but idling? I have an app run...
- Fri Mar 22, 2024 12:35 pm
- Forum: Documentation
- Topic: esp_modem: unsolicited response, URC
- Replies: 2
- Views: 16676
Re: esp_modem: unsolicited response, URC
A bit late but today I was wondering the same. It looks like it is possible but not trivial, it involves creating a custom DCE, here is a patch that incorporates it to the console example: https://github.com/espressif/esp-protoc ... 660991194c
- Mon Sep 18, 2023 12:20 pm
- Forum: Hardware
- Topic: ESP32-S3 LNA_IN Impedance
- Replies: 3
- Views: 3887
Re: ESP32-S3 LNA_IN Impedance
The impedance has not yet been added to the datasheet. Is there any info on this?
- Fri Jul 28, 2023 10:44 am
- Forum: ESP-IDF
- Topic: ESP32 RF Test Tool and TX Tone Functionality
- Replies: 3
- Views: 3709
Re: ESP32 RF Test Tool and TX Tone Functionality
In an interesting turn of events, this seems to be supported by latest esp-idf (5.1), including documentation and an usage example ! Unfortunately only ESP32-S3 and ESP32-C3 support this feature right now, so for the good old ESP32, we still have no way to do it. I have opened a GitHub issue to see ...
- Thu Jul 27, 2023 7:12 am
- Forum: ESP-IDF
- Topic: ESP32 RF Test Tool and TX Tone Functionality
- Replies: 3
- Views: 3709
Re: ESP32 RF Test Tool and TX Tone Functionality
This feature could also save me a lot of time for some lab tests, so I dug a bit more into it without success. My findings in case anyone wants to try: the ESP32 ROM exports three functions with suspicious names: * rom_start_tx_tone() * rom_start_tx_tone_step() * rom_stop_tx_tone() The stop function...
- Thu Feb 02, 2023 9:53 am
- Forum: General Discussion
- Topic: What's the meaning of wifi_pkt_rx_ctrl_t::ampdu_cnt?
- Replies: 0
- Views: 1158
What's the meaning of wifi_pkt_rx_ctrl_t::ampdu_cnt?
For my application, I am trying to obtain information of AMPDU frames, I need to identify which frames start, end or are in the middle of an AMPDU transmission. I made a program that prints the aggregation and ampdu_cnt fields in the wifi_pkt_rx_ctrl_t structure (obtained for each frame captured in ...
- Tue Jan 31, 2023 9:07 am
- Forum: ESP-IDF
- Topic: How to obtain wifi packet rate in sniffer application?
- Replies: 1
- Views: 1790
Re: How to obtain wifi packet rate in sniffer application?
After reviewing carefully the capture, it looks like rate uses the wifi_phy_rate_t, but confirmation would be nice.
- Mon Jan 30, 2023 10:57 am
- Forum: ESP-IDF
- Topic: How to obtain wifi packet rate in sniffer application?
- Replies: 1
- Views: 1790
How to obtain wifi packet rate in sniffer application?
I want to build an application to measure WiFi channel load. This requires computing air time of received packets. My approach is: 1. Configure ESP32 in promiscuous mode, enable reception of all kind of packets. 2. In the rx callback, obtain the packet rate and packet length. 3. Using the rate and l...
- Wed May 18, 2022 1:48 pm
- Forum: Hardware
- Topic: Certificacion: cannot pass wifi mask tests when using custom firmware
- Replies: 1
- Views: 1815
Certificacion: cannot pass wifi mask tests when using custom firmware
Hi, We have a product using an ESP32 MCU on a custom board. When performing transmission tests in 11b mode (1 Mbps, 20 dBm output), with our custom firmware, we cannot pass the wifi masks as per this figure: https://i.imgur.com/ZSDPDLa.png When we do the test with our firmware, the side lobes are to...
- Thu Apr 01, 2021 6:53 pm
- Forum: General Discussion
- Topic: RMT based NeoPixels (WS2812B) flickers when WiFi is used
- Replies: 24
- Views: 41287
Re: RMT based NeoPixels (WS2812B) flickers when WiFi is used
Well, it turns out reading the forum helps
I have changed the initialization to be done from a task pinned to core 1 (that I delete when finished using vTaskDelete(NULL)), and that has completely removed the glitches!
I have changed the initialization to be done from a task pinned to core 1 (that I delete when finished using vTaskDelete(NULL)), and that has completely removed the glitches!