Hi @liaifat85, Thanks for the constructive suggestions. The I2S peripheral is being used solely as an output. It supplies Data, BCLK and LRCLK to a Max98357 amplifier. Signals are routed less than 10mm from the Wroom module to the amp. I can't see how signal integrity would cause an error in the dma...

I have a custom board with adf pipeline: fat_fs -> mp3 -> i2s ADF: 2.6 IDF: 4.4.6 It all works fine but after the pipeline has sat idle for some long time, like about an hour or so, I get the following error logged from the I2S driver. E (370583) I2S: dma error, interrupt status: 0x00005000 Then the...

I got this working. I managed to get espcoredump.py to download the dump directly from the flash. I then compared this to the file I had sent to the cloud storage. They were identical except for the fact that the direct flash download seems to download the entire partition, most of which is useless ...

Hi, Hopefully @ESP_pdragun is listening and can help! Running ADF with IDF 4.4.6 Updated espcoredump.py using pip install to v1.7.0 I have configured settings to save ELF format coredump to flash with SHA256 hash with the following partition table: otadata,data,ota,0x9000,8K, phy_init,data,phy,0xb00...

Not to mention... https://en.wikipedia.org/wiki/1-bit_DAC

It was my own dumb fault. I was fiddling with some SDKCONFIG settings and changed the factory reset gpio to be active high instead of active low (which is necessary for my board). This meant that a factory reset was triggering every boot.

Thanks Peter, That is very helpful! I actually managed to track down the bug I was chasing using the GDB load of the flashed core dump. See this post... https://www.esp32.com/viewtopic.php?f=20&t=36599&p=122894#p122894 The core dump revealed the function that had hung and inspection of the code reve...

Okay, I think I found it... sigh. https://github.com/espressif/esp-idf/blob/5f257494c5866e5f9965c54c907c2588f3496ad1/components/driver/i2s.c#L1615 The function i2s_set_clk(i2s_port_t i2s_num, uint32_t rate, uint32_t bits_cfg, i2s_channel_t ch) in the i2s driver code takes a mutex at the beginning. S...

IDF :4.4.6 ADF :2.0.3 My pipeline is: sdcard with mp3 file -> fatfs_stream_element_handle -> mp3_decoder_element_handle -> i2s_stream_writer_element I have a task (thread 15 "music_task") that processes calls control messages from the app and events from the audio pipeline. When the mp3 element repo...

I have bootloader hooks installed. void bootloader_before_init(void) { /* Keep in my mind that a lot of functions cannot be called from here * as system initialization has not been performed yet, including * BSS, SPI flash, or memory protection. */ ESP_LOGW("HOOK", "Latching Power On"); // Latch pow...