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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 read
SYNOPSIS¶
ssize_t spi_w8r8(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¶
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. |