https://github.com/meinside/scrollphat-go
Go library for Pimoroni Scroll pHat
https://github.com/meinside/scrollphat-go
golang pimoroni scroll-phat
Last synced: 14 days ago
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Go library for Pimoroni Scroll pHat
- Host: GitHub
- URL: https://github.com/meinside/scrollphat-go
- Owner: meinside
- Created: 2016-01-06T13:59:39.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2016-02-19T09:15:45.000Z (over 10 years ago)
- Last Synced: 2025-02-28T00:17:16.333Z (over 1 year ago)
- Topics: golang, pimoroni, scroll-phat
- Language: Go
- Size: 15.6 KB
- Stars: 2
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Go library for Pimoroni Scroll pHat
Go library for controlling [Pimoroni](https://shop.pimoroni.com/)'s [Scroll pHat](https://shop.pimoroni.com/products/scroll-phat).
Most of the codes were inspired by [scroll-phat](https://github.com/pimoroni/scroll-phat) and [Dave Cheney](http://dave.cheney.net/)'s [i2c](https://github.com/davecheney/i2c/blob/master/i2c.go).
## Install
```bash
$ go get -u github.com/meinside/scrollphat-go
```
## Configuration
You need to enable I2C first:
```bash
$ sudo raspi-config
```
Also, your account should be in 'i2c' group:
```bash
$ sudo usermod -G i2c USERNAME
```
## Sample
```go
// sample.go - sample application for Scroll pHat, 2016.01.07.
package main
import (
"time"
scroll "github.com/meinside/scrollphat-go"
)
func main() {
//scroll.TrimRedundantSpaces = false // don't trim redundant spaces
if phat := scroll.New(); phat != nil {
// set brightneess
phat.SetBrightness(5)
time.Sleep(1 * time.Second)
// turn on all LEDs
phat.Fill()
time.Sleep(1 * time.Second)
// turn off all LEDs
phat.Clear()
time.Sleep(1 * time.Second)
// draw a string (not scrolling)
phat.DrawBytes(scroll.BytesForString(":-)"))
time.Sleep(1 * time.Second)
// draw a string (scrolling)
phat.Scroll(" 0123456789 ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz `~!@#$%^&*()-=_+[]{};:\"'<>,.?/\\|", 50)
time.Sleep(1 * time.Second)
// draw points (heart-shaped...)
phat.DrawBytes(scroll.ArraysToBytes([][]uint8{
{0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0},
{0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0},
{0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0},
{0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0},
{0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0},
}))
time.Sleep(1 * time.Second)
// invert LEDs
phat.Invert()
time.Sleep(1 * time.Second)
// turn off all LEDs
phat.Clear()
phat.Close()
} else {
panic("could not initialize ScrollPHat")
}
}
```
Compile it and run like this:
```bash
$ go build sample.go
$ ./sample
```
Then you'll see:
## License
MIT