You can use the wemos esp boards. They are small and capable for anything that the bigger ones does. ^_^ https://www.aliexpress.com/item/32839344778.html?spm=a2g0o.productlist.0.0.44202a76MiPBr3&algo_pvid=0b72f7ee-acc9-44d3-b889-43de39fe76cc&algo_expid=0b72f7ee-acc9-44d3-b889-43de39fe76cc-0&btsid=59...

I can not find any reliable solution for the implementation of the I2S event queues on the Arduino framework. Currently i'am measuring a 4khz signal from a signal generator with the I2S adc via dma. The data goes into a buffer on a task and i read that buffer from an other task. The problem is that...

You can just use WiFi.mode(WIFI_AP_STA); and than WiFi.begin(SSID,PASSWORD); after the user set it on AP. Or if it is not working like this, use the WiFi.disconnect() from AP mode and then set AP_STA and start wifi. If the user configured the right credentials , i assume that they want to switch to ...

Do you want to return a list of highs and lows for a sample where you are now returning one high and one low Actually i don't know if it is better if i measure all the mins and maxs in the buffer and get the average for both of them and compute with that variable or just let it be and compute with ...

Hello guys! I have an array with length of 1024. There are some sine wave data in it. I want to find the minimum and maximum value of that sine wave and after that i want to compute its amplitude. The facts that this sine wave is not constant. It is always changing its maximum and minimum values an...

You can use websockets or http requests for data transmission beetween two esp boards. You can setup a websocket server and a websocket client on different esp boards and use the library methods. The client will connect to the server ip's once its reachable, the server will see this connection and c...

My problem is partially solved. The solution was that i had to separate my i2s reading and plotting function and put them on the two cores. Now my i2s reading function on core 1 is looks like this: static const inline void Sampling(){ i2s_read(I2S_NUM_0, (char*)i2s_read_buff,NUM_SAMPLES * sizeof(ui...

Hello forumers! I want to read a 4Khz analog signal from a signal generator via i2s dma with ESP32 on arduino framework. My basic idea is this: -Setup i2s DMA to put the reading to a buffer. -Assign a read function/task to the core0 to read the values from the DMA buffer. -Assign a "plotting" funct...

You can update it from web.
Follow this example:
https://lastminuteengineers.com/esp32-o ... duino-ide/

My problem is solved. I just had to switch the channel format in the i2s config to "all left" My i2S config is looks like this now: #define I2S_NUM (0) void configure_i2s(){ i2s_config_t i2s_config = { .mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_RX | I2S_MODE_ADC_BUILT_IN), // I2S receive mode ...