Search found 9 matches
- Sun Nov 26, 2023 12:31 am
- Forum: General Discussion
- Topic: Wifi CSI concept question
- Replies: 1
- Views: 2802
Re: Wifi CSI concept question
Ok, I think I know what to do now. An array of consecutive CSI measurements by itself carries no meaning. We only see each carrier's performance over time as term CSI(t). We can then apply FFT to each carrier to get the CFR matrix; The CFR matrix is a frequency domain representation of our CSI data....
- Sat Nov 25, 2023 11:31 pm
- Forum: General Discussion
- Topic: Wifi CSI concept question
- Replies: 1
- Views: 2802
Wifi CSI concept question
Hello, I only have a conceptual question. Suppose I am recording wifi CSI data where I keep the 100 most recents frames of wifi CSI data in an array. So row 1 represents wifi CSI at frame 't' (now), row 2 is the CSI data previously recorded so on and so forth. How would one get CIR and CFR from this...
- Fri Oct 13, 2023 5:11 am
- Forum: General Discussion
- Topic: ESP Wifi Concept Question
- Replies: 1
- Views: 2256
ESP Wifi Concept Question
Hello to anyone reading this. I am working on an indoor localization project that utilizes Wifi FTM. I have a particular question that is more concept based. I know that the ESP32 boards are capable of performing Wifi FTM and gathering Wifi CSI. I just ask it possible to perform wifi FTM and CSI at ...
- Wed Aug 16, 2023 12:28 am
- Forum: ESP-IDF
- Topic: Wifi FTM stops after 2 or 3 minutes
- Replies: 3
- Views: 1767
Re: Wifi FTM stops after 2 or 3 minutes
Fixed the data leak. It took me for a while but I have to delete the FTM report even though I never use it? #include "freertos/FreeRTOS.h" #include "freertos/event_groups.h" #include "esp_event.h" #include "esp_log.h" #include "esp_err.h" #include "esp_wifi.h" #include "esp_mac.h" #include "nvs_flas...
- Fri Aug 11, 2023 4:39 pm
- Forum: ESP-IDF
- Topic: Wifi FTM stops after 2 or 3 minutes
- Replies: 3
- Views: 1767
Re: Wifi FTM stops after 2 or 3 minutes
Just an update to anyone coming across from this, I did some more experimentation and I found out the culprit is the FTM initiator. FTM initiator has a data leak and I isolated the line causing the issue: bits = xEventGroupWaitBits(s_ftm_event_group, FTM_REPORT_BIT | FTM_FAILURE_BIT, pdTRUE, pdFALSE...
- Thu Aug 10, 2023 4:54 pm
- Forum: ESP-IDF
- Topic: Wifi FTM stops after 2 or 3 minutes
- Replies: 3
- Views: 1767
Wifi FTM stops after 2 or 3 minutes
Hey, I have 2 ESP32s2 on my hand. One is acting as an initiator. The other is acting as the responder. The wifi FTM works for a while, however, after 2 or 3 minutes, the FTM stops. I'm not exactly sure what is going on. I don't believe my code has any data leaks, and I browsed the forums to find a s...
- Sat Aug 05, 2023 2:46 pm
- Forum: ESP-IDF
- Topic: ESP32 app_main() loop
- Replies: 2
- Views: 2078
Re: ESP32 app_main() loop
Thank you for your input.
- Fri Aug 04, 2023 5:10 am
- Forum: ESP-IDF
- Topic: ESP32 app_main() loop
- Replies: 2
- Views: 2078
ESP32 app_main() loop
This is some code I wrote for my ESP32S2. I am a bit slow since I am learning C and the ESP-IDF framework at the same time. The purpose of this code is supposed to a Wifi FTM Responder. I plan on writing code for the Wifi FTM Initiator that checks the distance every quarter second in the future. In ...
- Fri Jul 28, 2023 3:14 am
- Forum: ESP32 Arduino
- Topic: Example Wifi FTM Issues
- Replies: 0
- Views: 4163
Example Wifi FTM Issues
I currently hold 2 ESP32 S2 Dev Modules. I have been able to connect them to my computer with the proper cords, drivers, and etc. I also have the latest necessary packages installed in the Arduino IDE (Specifically, esp32 by espressif (Version 2.0.11). https://github.com/espressif/arduino-esp32/blob...