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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build !linux
// +build !linux
package spi
import (
"errors"
"golang.org/x/exp/io/spi/driver"
)
// Devfs is a no-implementation of an SPI driver that works against the devfs.
// You need to have loaded the Linux "spidev" module to use this driver.
type Devfs struct {
// Dev is the device to be opened.
// Device name is usually in the /dev/spidev<bus>.<chip> format.
// Required.
Dev string
// Mode is the SPI mode. SPI mode is a combination of polarity and phases.
// CPOL is the high order bit, CPHA is the low order. Pre-computed mode
// values are Mode0, Mode1, Mode2 and Mode3. The value of the mode argument
// can be overridden by the device's driver.
// Required.
Mode Mode
// MaxSpeed is the max clock speed (Hz) and can be overridden by the device's driver.
// Required.
MaxSpeed int64
}
// Open opens the provided device with the speicifed options
// and returns a connection.
func (d *Devfs) Open() (driver.Conn, error) {
return nil, errors.New("not implemented on this platform")
}
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