other versions
- jessie 3.16.56-1+deb8u1
SPI_W8R8(9) | Serial Peripheral Interface (S | SPI_W8R8(9) |
NAME¶
spi_w8r8 - SPI synchronous 8 bit write followed by 8 bit readSYNOPSIS¶
ssize_t
spi_w8r8(struct spi_device * spi,
u8 cmd);
ARGUMENTS¶
spidevice with which data will be exchanged
cmd
command to be written before data is read back
CONTEXT¶
can sleepDESCRIPTION¶
This returns the (unsigned) eight bit number returned by the device, or else a negative error code. Callable only from contexts that can sleep.COPYRIGHT¶
May 2018 | Kernel Hackers Manual 3.16 |