Name
spi_w8r16 —
SPI synchronous 8 bit write followed by 16 bit read
Synopsis
ssize_t spi_w8r16 ( | struct spi_device * | spi, |
| | u8 | cmd); |
Arguments
spi
device with which data will be exchanged
cmd
command to be written before data is read back
Description
This returns the (unsigned) sixteen bit number returned by the
device, or else a negative error code. Callable only from
contexts that can sleep.
The number is returned in wire-order, which is at least sometimes
big-endian.