hi,everyone.
i found the spi speed can't set like this:
void iodata_transfer(int fd,int len)
{
...
struct spi_ioc_transfer xfer[1];
memset(xfer,0,sizeof xfer);
xfer[0].rx_buf=(__u64) buf;
xfer[0].delay_usecs=0;
xfer[0].len=len;
xfer[0].speed_hz=12*1000*1000;//this will make error.
}
the max speed is 15000000hz;
how can i do?
thanks a lot;
--
zhang.zhilong
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