NEWS: I ported my firmware to WROOM-32 dev board and run several tests. The table below shows the results: - "NO" stands for the client leaving and not returning after channel switch - "YES" stands for transparent channel change without getting WIFI_EVENT_AP_STADISCONNECTED event. The laptop I used ...

(1) This is the intial setup with a detached antenna and no chips (very poor SWR) - this is the version the firmware was tested with client drop off: 01.jpg (2) Only C15 added (SWR much better) - firmware not tested yet: 02.jpg (3) Some antenna cutting and C15 (the best SWR obtained): 03.jpg In all ...

OK, thank you for the reply.
Impendance matching is almost done. Will keep you updated you on the test results.

INTRO: I'm working on the custom prototype WiFi device with a reference to "esp32_hardware_design_guidelines_en.pdf" notes. At the moment, I don't have the pcb antenna connected to the device properly (C15-L4-C14 missing) since the impendance match work is still in progress. However, I tried to go w...

Hi, Is there any way to configure a ESP32 I2C master driver so that it can handle long SCL-low periods? The reason I want that is quite simple: my EPS32 master device sends a "start" command to a custom proximity sensor slave device (STM32) and waits for the response. The response might take up to a...

ESP_Sprite, wow! Thank you for a timely reply! Highly appreciate. (1) Yes, it was my mistake for omitting the prior call to enable and un-reset the peripheral. I do confirm that after adding either blocks of code PCNT starts off: periph_module_enable(PERIPH_PCNT_MODULE); or #include "soc/dport_acces...

Dear Espressif, I'm trying to set up a PCNT peripheral with a pure registry approach (non-IDF) and getting the following mind-blowing mishappening: // (1) make a snapshot of any (for example, CONF0) register prior to modification: printf("(%08lX) = %08lX\n", (uint32_t)&PCNT.conf_unit[0].conf0, *((ui...

Are there anyone from Espressif who knows the performance specs of their product?

Hi, I'm sort of lost with the poor espressif tech documentation on ESP32.... It does not give any idea what the max frequency is @ which ESP32 I2S can read data in parallel mode (LCD/CAMERA). Is it F_CLK or F_BCK? ESP32 datasheet only says that I2S is clocked by either PLL_F160M_CLK or configurable ...

PS. A short notice on h/w - here are some snapshots from the scope. Windowing ON/OFF comparision: Those are two screenshots merged in one and matched against VSYNC mark: yellow signal = VSYNC, cyan signal = HSYNC (HREF) One may see the windowing work as expected. Also, VSYNC is low when HSYNC/HREF i...