spi_w8r16(9)
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
CONTEXT
can sleep
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.