spi - write/read from SPI device

Usage

spi [-brcmfwv] DATA...

Options

-b BUS	SPI bus number (default 0)
-r COUNT	bytes to read
-c	chip select (default 0)
-m MODE	SPI mode (default 0)
-f HZ	max speed frequency, in Hz (default 1 MHz)
-w BIT	bits per word (default 8)
-v	verbose