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joule: export PWMPin adaptor methods 

Signed-off-by: deadprogram <ron@hybridgroup.com>
This commit is contained in:
deadprogram 2017-04-29 17:02:47 +02:00
parent 028ef8183d
commit b250670ccb
2 changed files with 20 additions and 7 deletions
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1
platforms/intel-iot/edison/edison_adaptor.go
View File

@ -267,6 +267,7 @@ func (e *Adaptor) DigitalPin(pin string, dir string) (sysfsPin *sysfs.DigitalPin
return e.digitalPins[i.pin], nil
}
// PWMPin returns a sysfs.PWMPin
func (e *Adaptor) PWMPin(pin string) (sysfsPin *sysfs.PWMPin, err error) {
sysPin := e.pinmap[pin]
if sysPin.pwmPin != -1 {

26
platforms/intel-iot/joule/joule_adaptor.go
View File

@ -119,6 +119,20 @@ func (e *Adaptor) DigitalWrite(pin string, val byte) (err error) {
// PwmWrite writes the 0-254 value to the specified pin
func (e *Adaptor) PwmWrite(pin string, val byte) (err error) {
pwmPin, err := e.PWMPin(pin)
if err != nil {
return
}
period, err := pwmPin.Period()
if err != nil {
return err
}
duty := gobot.FromScale(float64(val), 0, 255.0)
return pwmPin.SetDutyCycle(uint32(float64(period) * duty))
}
// PWMPin returns a sysfs.PWMPin
func (e *Adaptor) PWMPin(pin string) (sysfsPin *sysfs.PWMPin, err error) {
sysPin := sysfsPinMap[pin]
if sysPin.pwmPin != -1 {
if e.pwmPins[sysPin.pwmPin] == nil {
@ -133,14 +147,12 @@ func (e *Adaptor) PwmWrite(pin string, val byte) (err error) {
return
}
}
period, err := e.pwmPins[sysPin.pwmPin].Period()
if err != nil {
return err
}
duty := gobot.FromScale(float64(val), 0, 255.0)
return e.pwmPins[sysPin.pwmPin].SetDutyCycle(uint32(float64(period) * duty))
sysfsPin = e.pwmPins[sysPin.pwmPin]
return
}
return errors.New("Not a PWM pin")
err = errors.New("Not a PWM pin")
return
}
// GetConnection returns an i2c connection to a device on a specified bus.