Device::WebIO::Device::SPI - Role for things that can do SPI
Returns the number of spi channels.
spi_set_speed( $channel, $speed );
Set the clock speed of the channel.
spi_read( $channel, $len );
$len bytes from the channel. Returns an arrayref of data.
spi_write( $channel, $packed_data );
$packed_data to the channel. This should be a packed string. For many devices, a single byte can packed using:
my $packed_data = pack 'n', $data;
For an array of bytes, try:
my $packed_data = pack 'C*', @data;
This can often be different based on the device, which is why we don't do it for you.
Copyright (c) 2014 Timm Murray All rights reserved.
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