From time to time a breaking change of API can happen. Following to SemVer, the gobot main version should be increased. In such case all users needs to adjust there projects for the next update, although they not using a driver with changed API.
To prevent this scenario for most users, the main version will not always increased, but affected drivers are listed here and a migration strategy is provided.
All BLE drivers now can be found in the folder "drivers/ble". Formerly the drivers are located below "platforms/ble". In addition the location of the BLE client adaptor was changed to "platforms/bleclient". Therefore a change for the import paths is needed. The constructor function was also renamed, see below.
// old
import(
...
"gobot.io/x/gobot/v2/platforms/ble"
...
)
...
bleAdaptor := ble.NewClientAdaptor(os.Args[1])
...
// new
import(
...
"gobot.io/x/gobot/v2/drivers/ble"
"gobot.io/x/gobot/v2/platforms/bleclient"
...
)
...
bleAdaptor := bleclient.NewAdaptor(os.Args[1])
...Since introducing the usage of "github.com/muka/go-bluetooth" in 2020, the callback do not support the given error parameter anymore. The switch to usage of "tinygo.org/x/bluetooth" has not changed this. Therefore it is removed now from the function.
All those functions log an error only or panic, so the caller gets no nice programmatic feedback. The error is now returned instead and the log output needs to be done at caller side.
// old
...
devName := access.GetDeviceName()
appearance := access.GetAppearance()
modelNo := info.GetModelNumber()
fwRev := info.GetFirmwareRevision()
hwRev := info.GetHardwareRevision()
manuName := info.GetManufacturerName()
pid := info.GetPnPId()
level := battery.GetBatteryLevel()
...
// new
...
devName, err := access.GetDeviceName()
if err != nil {
fmt.Println(err)
}
appearance, err := access.GetAppearance()
if err != nil {
fmt.Println(err)
}
...
...The Serial Based Sphero adaptor was split off into a generic serial adaptor and the driver part. With this, the imports needs to be adjusted. In addition all events now have a suffix "Event", see below.
// old
import(
...
"gobot.io/x/gobot/v2/platforms/sphero"
...
)
...
adaptor := sphero.NewAdaptor("/dev/rfcomm0")
spheroDriver := sphero.NewSpheroDriver(adaptor)
...
_ = spheroDriver.On(sphero.Collision, func(data interface{}) {
...
// new
import(
...
"gobot.io/x/gobot/v2/drivers/common/spherocommon"
"gobot.io/x/gobot/v2/drivers/serial"
"gobot.io/x/gobot/v2/platforms/serialport"
...
)
...
adaptor := serialport.NewAdaptor("/dev/rfcomm0")
spheroDriver := sphero.NewSpheroDriver(adaptor)
...
_ = spheroDriver.On(sphero.CollisionEvent, func(data interface{}) {
...The Neurosky adaptor now use the generic serial adaptor. The driver part was moved. With this, the imports needs to be adjusted. In addition all events now have a suffix "Event", see below.
// old
import(
...
"gobot.io/x/gobot/v2/platforms/neurosky"
...
)
...
adaptor := neurosky.NewAdaptor("/dev/rfcomm0")
neuro := neurosky.NewDriver(adaptor)
...
_ = neuro.On(neurosky.Extended, func(data interface{}) {
...
// new
import(
...
"gobot.io/x/gobot/v2/drivers/serial/neurosky"
"gobot.io/x/gobot/v2/platforms/serialport"
...
)
...
adaptor := serialport.NewAdaptor("/dev/rfcomm0", serialport.WithName("Neurosky"), serialport.WithBaudRate(57600))
neuro := neurosky.NewMindWaveDriver(adaptor)
...
_ = neuro.On(neurosky.ExtendedEvent, func(data interface{}) {
...The MegaPi adaptor now use the generic serial adaptor. The driver part was moved. With this, the imports needs to be adjusted.
// old
import(
...
"gobot.io/x/gobot/v2/platforms/megapi"
...
)
...
megaPiAdaptor := megapi.NewAdaptor("/dev/ttyS0")
motor := megapi.NewMotorDriver(megaPiAdaptor, 1)
...
// new
import(
...
"gobot.io/x/gobot/v2/drivers/serial/megapi"
"gobot.io/x/gobot/v2/platforms/serialport"
...
)
...
adaptor := serialport.NewAdaptor("/dev/ttyS0", serialport.WithName("MegaPi"))
motor := megapi.NewMotorDriver(adaptor, 1)
...A backward compatible case is still included, but it is recommended to use "WithButtonPollInterval" instead, see example below.
// old
d := gpio.NewButtonDriver(adaptor, "1", 50*time.Millisecond)
// new
d := gpio.NewButtonDriver(adaptor, "1", gpio.WithButtonPollInterval(50*time.Millisecond))There is no need to use the direction, enable or sleep feature of the driver. Therefore the parameters are removed from constructor. Please migrate according to the examples below. The order of the optional functions does not matter.
// old
d0 := gpio.NewEasyDriver(adaptor, 0.80, "1", "", "", "")
d1 := gpio.NewEasyDriver(adaptor, 0.81, "11", "12", "", "")
d2 := gpio.NewEasyDriver(adaptor, 0.82, "21", "22", "23", "")
d3 := gpio.NewEasyDriver(adaptor, 0.83, "31", "32", "33", "34")
// new
d0 := gpio.NewEasyDriver(adaptor, 0.80, "1")
d1 := gpio.NewEasyDriver(adaptor, 0.81, "11", gpio.WithEasyDirectionPin("12"))
d2 := gpio.NewEasyDriver(adaptor, 0.82, "21", gpio.WithEasyDirectionPin("22"), gpio.WithEasyEnablePin("23"))
d3 := gpio.NewEasyDriver(adaptor, 0.83, "31", gpio.WithEasyDirectionPin("32"), gpio.WithEasyEnablePin("33"),
gpio.WithEasySleepPin("34"))d := gpio.NewBuzzerDriver(adaptor, "1")
// old
d.BPM = 120.0
fmt.Println("BPM:", d.BPM)
// new
d.SetBPM(120.0)
fmt.Println("BPM:", d.BPM())Usually the relay is inverted or not, except be rewired. From now on the inverted behavior can only be changed on initialization. If there is really a different use case, please file a new issue.
// old
d := gpio.NewRelayDriver(adaptor, "1")
d.Inverted = true
fmt.Println("is inverted:", d.Inverted)
// new
d := gpio.NewRelayDriver(adaptor, "1", gpio.WithRelayInverted())
fmt.Println("is inverted:", d.IsInverted())// old
d := gpio.NewHD44780Driver(adaptor, ...)
d.SetRWPin("10")
// new
d := gpio.NewHD44780Driver(adaptor, ..., gpio.WithHD44780RWPin("10"))d := gpio.NewServoDriver(adaptor, "1")
// old
d.Min()
fmt.Println("current position:", d.CurrentAngle)
d.Center()
d.Max()
// new
d.ToMin()
fmt.Println("current position:", d.Angle())
d.ToCenter()
d.ToMax()The motor driver was heavily revised - sorry for the inconveniences.
affected pins:
- SpeedPin
- SwitchPin (removed, was unused)
- DirectionPin
- ForwardPin
- BackwardPin
Usually the pins will not change without a hardware rewiring. All pins, except the speed pin are optionally, so options are designed for that.
// old
d := gpio.NewMotorDriver(adaptor, "1")
d.DirectionPin = "10"
// new
d := gpio.NewMotorDriver(adaptor, "1", gpio.WithMotorDirectionPin("10"))// old
d := gpio.NewMotorDriver(adaptor, "1")
d.ForwardPin = "10"
d.BackWardPin = "11"
// new
d := gpio.NewMotorDriver(adaptor, "1", gpio.WithMotorForwardPin("10"), gpio.WithMotorBackwardPin("11"))affected functions:
- Speed() --> SetSpeed()
- Direction() --> SetDirection()
- Max() --> RunMax()
- Min() --> RunMin()
affected states:
- CurrentState
- CurrentSpeed
- CurrentMode
- CurrentDirection
Most of the attributes were used only for reading. If there is something missing, please file a new issue.
d := gpio.NewMotorDriver(adaptor, "1")
// old
d.On()
fmt.Println("is on:", d.CurrentState==1)
fmt.Println("speed:", d.CurrentSpeed)
d.Off()
fmt.Println("is off:", d.CurrentState==0)
fmt.Println("mode is digital:", d.CurrentMode=="digital")
fmt.Println("direction:", d.CurrentDirection)
// new
d.On()
fmt.Println("is on:", d.IsOn())
d.Off()
fmt.Println("is on:", d.IsOff())
fmt.Println("speed:", d.Speed())
fmt.Println("mode is digital:", d.IsDigital())
fmt.Println("direction:", d.Direction())d := gpio.NewMotorDriver(adaptor, "1")
// old
d.Speed(123)
fmt.Println("is mode now analog?", d.CurrentMode!="digital")
// new
d.SetSpeed(123)
fmt.Println("is mode now analog?", d.IsAnalog())Although, it is working like above, it will be more clear, if the mode is defined at the beginning, like so.
// old
d := gpio.NewMotorDriver(adaptor, "1")
d.CurrentMode=="analog"
d.Max()
// new
d := gpio.NewMotorDriver(adaptor, "1", gpio.WithMotorAnalog())
d.RunMax()