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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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3 changes: 3 additions & 0 deletions ssd1306/registers.go
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Original file line number Diff line number Diff line change
Expand Up @@ -38,4 +38,7 @@ const (

EXTERNALVCC VccMode = 0x1
SWITCHCAPVCC VccMode = 0x2

NO_FLIP = false
FLIP = true
)
25 changes: 23 additions & 2 deletions ssd1306/ssd1306.go
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,7 @@ type Device struct {
canReset bool
resetCol ResetValue
resetPage ResetValue
isFlip bool
}

// Config is the configuration for the display
Expand All @@ -48,6 +49,7 @@ type Config struct {
// If you're using a different size, you might need to set these values manually.
ResetCol ResetValue
ResetPage ResetValue
IsFlip bool
}

type I2CBus struct {
Expand Down Expand Up @@ -149,8 +151,8 @@ func (d *Device) Configure(cfg Config) {
}
d.Command(MEMORYMODE)
d.Command(0x00)
d.Command(SEGREMAP | 0x1)
d.Command(COMSCANDEC)

d.SetFlip(cfg.IsFlip)

if (d.width == 128 && d.height == 64) || (d.width == 64 && d.height == 48) { // 128x64 or 64x48
d.Command(SETCOMPINS)
Expand Down Expand Up @@ -383,3 +385,22 @@ func (d *Device) Sleep(sleepEnabled bool) error {
}
return nil
}

// GetFlip retrieves the current state of the display's flip orientation.
// Returns a boolean value indicating whether the display is flipped or not.
func (d *Device) GetFlip() bool {
return d.isFlip
}

// SetFlip sets the flip orientation of the display.
// It uses commands SEGREMAP and COMSCANINC to achieve this.
func (d *Device) SetFlip(flip bool) {
d.isFlip = flip
if d.isFlip {
d.Command(SEGREMAP | 0x1) // Reverse horizontal mapping
d.Command(COMSCANDEC) // Reverse vertical mapping
} else {
d.Command(SEGREMAP) // Normal horizontal mapping
d.Command(COMSCANINC) // Normal vertical mapping
}
}
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