I'm using ESP-WROOM with audio chip ICS-43434. Pins are attached: SCK to GPIO4, SD to GPIO36, WS to GPIO33. L/R is grounded. i2s_read() always returns 0s. I've tried many things, altering i2s_config but cannot get non-0. Am I dong something wrong? Maybe I can't use GPIO36? I'm using esp-idf v4.4.1. ...

Regarding, mcpwm_isr_register questions, I copied mcpwm_bldc_control example so I am calling ISR in IRAM_ATTR context:

mcpwm_isr_register(MCPWM_UNIT_0, isr_handler, NULL, ESP_INTR_FLAG_IRAM, NULL);

And it appears this happens with NVS reads too: DEBUG: tvocPPB: 0ppb ethanolRaw: 34063 Guru Meditation Error: Core 0 panic'ed (Cache disabled but cached memory region accessed) Core 0 register dump: PC : 0x40088d6b PS : 0x00060034 A0 : 0x80088de0 A1 : 0x3ffbf0e0 0x40088d6b: esp_cpu_stall at C:/msys3...

We are using the example ISR handler for mcpwm esp-idf/examples/peripherals/mcpwm/mcpwm_bldc_control/main/mcpwm_bldc_control_hall_sensor_example.c CAP0 is setup on rising edge, and CAP1 on falling edge of a 910Hz signal. So we are getting interrupts every at a rate of 1.82Khz. Our main loop writes t...

When you say "depends on your hardware design" do you refer to 1) GPIO0 as ethernet output will never work when using Wifi or Ble? 2) GPIO0 as ethernet output will never work with most ethernet RMII parts (like LAN8x70 series, etc). We are inverting the signal as shown in WROVER-B ESP32-Ethernet-Kit...

Yes, I read that in latest v4.x release (it wasn't in rev 3.x which we used). But there is also this in WROVER-B kit which implies GPIO0 is fully supported in WROVER: ESP32-Ethernet-Kit V1.0 Getting Started Guide https://docs.espressif.com/projects/esp-idf/en/latest/hw-reference/get-started-ethernet...

As a follow on, it seems if I turn on Wifi or BLE, then ethernet becomes unstable. So GPIO0 with clock out does not work in hardware?

We are using WROVER-B and are using the extra PSRAM inside the WROVER-B package. And we need EMAC_TX_CLK output for our LAN8710A. We have a clock inverter between GPIO0 and LAN8710A CLKIN pin. We are using esp-idf (version v3.3-rc). When I try to initialize ethernet with clock mode ETH_CLOCK_GPIO0_O...