On 20:26 Fri 02 Nov , Alexander Shiyan wrote:
> Fri, 2 Nov 2012 17:17:40 +0100 от Jean-Christophe PLAGNIOL-VILLARD <plagnioj@xxxxxxxxxxxx>:
> > usefull to debug spi
> >
> > The command allow to read/write on a spi device
> >
> > Usage: spi [OPTION] [data to write 0xXX]
> > write/read spi device.
> > -b <bus_num> spi bus number (default = 0)
> > -r <count> to read
> > -c <cs> chip select (default = 0)
> > -m <mode> spi mode (default = 0)
> > -f <hz> max_speed_hz (default = 1MHz)
> > -w <bit> bits_per_word (default = 8)
> > -v verbose
> ...
> > +static int do_spi(int argc, char *argv[])
> > +{
> > + struct spi_device spi;
> > + int bus = 0;
> > + int read = 0;
> > + int verbose = 0;
> > + int opt, count, i, ret;
> > +
> > + u8 *tx_buf, *rx_buf;
> > +
> > + memset(&spi, 0, sizeof(struct spi_device));
> > +
> > + spi.max_speed_hz = 1 * 1000 * 1000;
> > + spi.bits_per_word = 8;
>
> I suggest using the default data from master for these parameters.
no otherwise we can not write the help and bits_et_word it's default value at
spi framework level is 8
and thh max_speed_hz is slow already
and it has always been the device to control it no the master
Best Regards,
J.
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