use of nmi(level7) via esp_intr_alloc is prohibited during system initialization
https://github.com/espressif/esp-idf/ ... u.c#L241
https://github.com/espressif/esp-idf/b ... c.h#L294

I made and tested a simple m2m example #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "soc/gdma_reg.h" #include "soc/gdma_struct.h" #include "soc/periph_defs.h" #include "soc/system_reg.h" #include "esp_rom_lldesc.h" #include "string.h" #include "rom/cache.h" #include "esp_cache....

Hi
I would not do parameter passing via global variables not protected by mutex ( spinlock )
In ESP-IDF there are proper mechanisms to pass data between tasks ( queue .... ),
gpio_task received data, sent it to the queue, oled_task took it from the queue and sent it to the screen

Hi
If your queue is empty
will return control immediately without delay, you will get a loop without waiting, put

Hi
As far as I see it is esp32s3
Are you sure that

uint8_t *dst, uint8_t *src, uint32_t len

burst alligned ( 32 byte ) ?

menuconfig CONFIG_ESP_CONSOLE_NONE=y or CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG=y gpio_reset_pin(43); gpio_reset_pin(42); gpio_set_direction(43,GPIO_MODE_OUTPUT); gpio_set_direction(42,GPIO_MODE_OUTPUT); while(1) { gpio_set_level(43,1); gpio_set_level(42,1); gpio_set_level(43,0); gpio_set_level(42,0); gp...

Hi
if you are using esp32s3 devkit then gpio43 and gpio44 are connected to usb-uart converter
accordingly you will conflict with RXD/TXD signals of usb-uart converter
https://dl.espressif.com/dl/schematics/ ... 221130.pdf.

Hi. You can try spi_device_interface_config.cs_ena_pretrans Amount of SPI bit-cycles the cs should be activated before the transmission (0-16). https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/peripherals/spi_master.html#_CPPv4N29spi_device_interface_config_t15cs_ena_pretran...

hi
volatile variables do not protect variables from date races
esp idf provides two possible protection options depending on application requirements
mutex and spinlock

hi
try increasing
#define I2S_SAMPLE_RATE 3000