I find someone else post a similar question and it can be solve by setting .max_transfer_sz in spi_bus_config_t to larger size. This confused me because I thought the maximum size was only 4092 before.

To allocate a larger buffer, simply adjust the buffer_size constant to your desired size. For example: #define buffer_size 2048 // or any other desired size DMA_ATTR uint32_t recvbuf[buffer_size]; But when I adjust the size lager than 1023, it will keep printling out the initialized contents in the...

Hello, I am currently working on a project where I use an ESP32 as an SPI slave to receive data from another device. I follow the official ESP-IDF example for an SPI slave receiver, which can be found here: https://github.com/espressif/esp-idf/blob/v5.2.1/examples/peripherals/spi_slave/receiver/main...