It's a pity that the raw PDM is not supported in IDF currently. But will be supported in the future

For the sequence of reset, maybe you can refer to the DAC driver (https://github.com/espressif/esp-idf/bl ... #L169-L193), because the DAC on ESP32 relies on the DMA of I2S.

Also, the DAC driver provides three ways to use the DMA, maybe it can help you

试试在git checkout v5.0.1之后加上git submodule update再install

uxTaskGetStackHighWaterMark 这个报错可能是堆栈调用深度过深，排查一下是不是有什么地方递归太深了，或者在栈上分配了太多内存

附上freeRTOS文档
https://www.freertos.org/zh-cn-cmn-s/ux ... rMark.html

Yes, If you're using two channels under same sampling rate, just ignore this warning. But if you're using two I2S ports with different sampling rate, the driver can still possible to make it work in this case, but you need to take care: 1. Allocate the I2S port which has higher frequency first, beca...

May I ask how many bytes are wrote in every loop? Could you take a try to increase the sending buffer size. As you know, the i2s dma buffers are linked as a ring, and it'll keep looping once it start. Therefore, if the sending buffer size is short, there might be some interval before transmitting th...

Hi @aydeep.faldu, I see you printed all the data in the `i2s_read` thread and delayed 50 ms every time. Unfortunately, it will lead data lost, which should be the reason of the heavy noise. Although there are printing and delays in some i2s examples, they are only used for monitoring whether the dat...

Yes, only the first ADC unit is available via the I2S driver, you can refer to the dedicate ADC driver for the full support of ADC continuous mode

您好，我对比了一下两个平台代码的区别，原因是Arduino上touch默认的测量时间短于IDF v3.3中默认的测量时间，具体为：Arduino上的默认值为0x1000（在esp32-hal-touch.c第27行）, IDF上的默认值为0x7fff（在driver/touch_pad.h第106行）。
当测量时间增大，touch_pad充放电所占时间比例就会增大，因此造成了功耗相对较高