piframe-go/vendor/git.sungo.io/sungo/argon/fan/main.go
2020-09-04 14:56:41 -04:00

59 lines
1 KiB
Go

package fan
// Code originally developed by sungo (https://sungo.io)
// Distributed under the terms of the 0BSD license https://opensource.org/licenses/0BSD
import (
"github.com/d2r2/go-i2c"
"github.com/d2r2/go-logger"
)
type Fan struct {
conn *i2c.I2C
}
func init() {
logger.ChangePackageLogLevel("i2c", logger.PanicLevel)
}
// From the argon python script:
// On an rpi4, the bus should be 1
// On any other rpi, the bus should 0
// On all platforms, the address should be 0x1a
func New(address uint8, bus int) (*Fan, error) {
f := &Fan{}
i, err := i2c.NewI2C(address, bus)
f.conn = i
return f, err
}
func (f *Fan) Bus() int {
return f.conn.GetBus()
}
func (f *Fan) Addr() uint8 {
return f.conn.GetAddr()
}
func (f *Fan) SafeClose() error {
f.SetSpeed(50)
return f.Close()
}
func (f *Fan) Close() error {
return f.conn.Close()
}
func (f *Fan) SetSpeed(percent int) error {
if percent > 100 {
percent = 100
} else if percent < 0 {
percent = 0
}
_, err := f.conn.WriteBytes([]byte(string(percent)))
return err
}