Adding delay between SPI transfers

Hello,

I am trying to add delay to spi_ioc_trasnfer struct in my application code
like this below (.delay_usecs). I am testing this on DSO but the delay
between each transfer is always less than 25usec. (to be precise, 22us
delay after first transfer and 11us after then.) 


        struct spi_ioc_transfer tr = {
                .tx_buf = (unsigned long)txptr,
                .rx_buf = (unsigned long)rxptr,
                .len = noBytes,
                .delay_usecs = 1000,
                .speed_hz = speed,
                .bits_per_word = bits,
        };

struct spi_ioc_transfer is defined in /include/linux/spi/spidev.h.


Any suggestions please....

Trinath

Also,

Why ioctl() trasfers need atleast 2 bytes to transfer? Got segmentation
fault when tried to send one byte.

I have to write an application that sends 1 byte via SPI and receives one.
Is that impossible?