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| 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¶
Callable only from contexts that can sleep.RETURN¶
the (unsigned) eight bit number returned by the device, or else a negative error code.COPYRIGHT¶
| January 2017 | Kernel Hackers Manual 4.8. |