README ¶
Raspberry Pi
The Raspberry Pi is an inexpensive and popular ARM based single board computer with digital & PWM GPIO, and i2c interfaces built in.
The Gobot adaptor for the Raspberry Pi should support all of the various Raspberry Pi boards such as the Raspberry Pi 3 Model B, Raspberry Pi 2 Model B, Raspberry Pi 1 Model A+, and Raspberry Pi Zero.
We recommend updating to the latest Raspian Jessie OS when using the Raspberry Pi, however Gobot should also support older versions of the OS, should your application require this.
For more info about the Raspberry Pi platform, click here.
How to Install
go get -d -u gobot.io/x/gobot/... && go install gobot.io/x/gobot/platforms/raspi
How to Use
The pin numbering used by your Gobot program should match the way your board is labeled right on the board itself.
package main
import (
"time"
"gobot.io/x/gobot"
"gobot.io/x/gobot/drivers/gpio"
"gobot.io/x/gobot/platforms/raspi"
)
func main() {
r := raspi.NewAdaptor()
led := gpio.NewLedDriver(r, "7")
work := func() {
gobot.Every(1*time.Second, func() {
led.Toggle()
})
}
robot := gobot.NewRobot("blinkBot",
[]gobot.Connection{r},
[]gobot.Device{led},
work,
)
robot.Start()
}
How to Connect
Compiling
Simply compile your Gobot program like this:
$ GOARM=6 GOARCH=arm GOOS=linux examples/raspi_blink.go
Use the following GOARM
values to compile depending on which model Raspberry Pi you are using:
GOARM=6
(Raspberry Pi A, A+, B, B+, Zero)
GOARM=7
(Raspberry Pi 2, 3)
Once you have compiled your code, you can simply upload your program over the network from your host computer to the Raspi
$ scp raspi_blink pi@192.168.1.xxx:/home/pi/
and execute it on your Raspberry Pi with
$ ./raspi_blink
Enabling PWM output on GPIO pins.
For extended PWM support on the Raspberry Pi, you will need to use a program called pi-blaster. You can follow the instructions for pi-blaster install in the pi-blaster repo here:
Documentation ¶
Overview ¶
Package raspi contains the Gobot adaptor for the Raspberry Pi.
For further information refer to raspi README: https://gobot.io/x/gobot/blob/master/platforms/raspi/README.md
Index ¶
- type Adaptor
- func (r *Adaptor) Connect() (err error)
- func (r *Adaptor) DigitalRead(pin string) (val int, err error)
- func (r *Adaptor) DigitalWrite(pin string, val byte) (err error)
- func (r *Adaptor) Finalize() (err error)
- func (r *Adaptor) I2cRead(address int, size int) (data []byte, err error)
- func (r *Adaptor) I2cStart(address int) (err error)
- func (r *Adaptor) I2cWrite(address int, data []byte) (err error)
- func (r *Adaptor) Name() string
- func (r *Adaptor) PwmWrite(pin string, val byte) (err error)
- func (r *Adaptor) ServoWrite(pin string, angle byte) (err error)
- func (r *Adaptor) SetName(n string)
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Adaptor ¶ added in v1.0.0
type Adaptor struct {
// contains filtered or unexported fields
}
Adaptor is the Gobot Adaptor for the Raspberry Pi
func (*Adaptor) Connect ¶ added in v1.0.0
Connect starts connection with board and creates digitalPins and pwmPins adaptor maps
func (*Adaptor) DigitalRead ¶ added in v1.0.0
DigitalRead reads digital value from pin
func (*Adaptor) DigitalWrite ¶ added in v1.0.0
DigitalWrite writes digital value to specified pin
func (*Adaptor) I2cRead ¶ added in v1.0.0
I2cRead returns value from i2c device using specified size
func (*Adaptor) ServoWrite ¶ added in v1.0.0
ServoWrite writes a servo signal to the specified pin