Can the ESP32S3 adjust the spi clock speed below 78.7 kHz?

[natee.th]

I tried to connect ESP32S3 to 74HC165 by Logic level shifter 3.3 to 5 vdc bidirectional and tested to get data from 165 it didn't work. What I think is because clock speed is 78.7 kHz and cannot set clock speed lower than 78.7. kHz how to solve the problem?

Code: Select all

    spi_device_interface_config_t devcfg={

        .clock_speed_hz=1000,           //Clock out at 1000 Hz
        .mode=0,                                //SPI mode 0
        .spics_io_num=PIN_NUM_CS,               //CS pin
        .queue_size=1                         //We want to be able to queue 1 transactions at a time
    };