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ssd1306: Add function SetFlip and GetFlip #702

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merged 2 commits into from
Aug 18, 2024
Merged

ssd1306: Add function SetFlip and GetFlip #702

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f355dcc
ssd1306: Add function SetFlip and GetFlip
notpop Aug 16, 2024
a5e9776
implements SetRotation
notpop Aug 16, 2024
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5 changes: 5 additions & 0 deletions ssd1306/registers.go
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Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
package ssd1306

import "tinygo.org/x/drivers"

// Registers
const (
Address = 0x3D
Expand Down Expand Up @@ -38,4 +40,7 @@ const (

EXTERNALVCC VccMode = 0x1
SWITCHCAPVCC VccMode = 0x2

NO_ROTATION = drivers.Rotation0
ROTATION_180 = drivers.Rotation180
)
29 changes: 21 additions & 8 deletions ssd1306/ssd1306.go
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Expand Up @@ -15,9 +15,8 @@ import (
)

var (
errBufferSize = errors.New("invalid size buffer")
errOutOfRange = errors.New("out of screen range")
errNotImplemented = errors.New("not implemented")
errBufferSize = errors.New("invalid size buffer")
errOutOfRange = errors.New("out of screen range")
)

type ResetValue [2]byte
Expand All @@ -33,6 +32,7 @@ type Device struct {
canReset bool
resetCol ResetValue
resetPage ResetValue
rotation drivers.Rotation
}

// Config is the configuration for the display
Expand All @@ -48,6 +48,7 @@ type Config struct {
// If you're using a different size, you might need to set these values manually.
ResetCol ResetValue
ResetPage ResetValue
Rotation drivers.Rotation
}

type I2CBus struct {
Expand Down Expand Up @@ -149,8 +150,8 @@ func (d *Device) Configure(cfg Config) {
}
d.Command(MEMORYMODE)
d.Command(0x00)
d.Command(SEGREMAP | 0x1)
d.Command(COMSCANDEC)

d.SetRotation(cfg.Rotation)

if (d.width == 128 && d.height == 64) || (d.width == 64 && d.height == 48) { // 128x64 or 64x48
d.Command(SETCOMPINS)
Expand Down Expand Up @@ -363,13 +364,25 @@ func (d *Device) DrawBitmap(x, y int16, bitmap pixel.Image[pixel.Monochrome]) er

// Rotation returns the currently configured rotation.
func (d *Device) Rotation() drivers.Rotation {
return drivers.Rotation0
return d.rotation
}

// SetRotation changes the rotation of the device (clock-wise).
// Would have to be implemented in software for this device.
func (d *Device) SetRotation(rotation drivers.Rotation) error {
return errNotImplemented
d.rotation = rotation
switch d.rotation {
case drivers.Rotation0:
d.Command(SEGREMAP | 0x1) // Reverse horizontal mapping
d.Command(COMSCANDEC) // Reverse vertical mapping
case drivers.Rotation180:
d.Command(SEGREMAP) // Normal horizontal mapping
d.Command(COMSCANINC) // Normal vertical mapping
// nothing to do
default:
d.Command(SEGREMAP | 0x1) // Reverse horizontal mapping
d.Command(COMSCANDEC) // Reverse vertical mapping
}
return nil
}

// Set the sleep mode for this display. When sleeping, the panel uses a lot
Expand Down
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