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this is what I meant

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This commit is contained in:
soypat
2025-07-02 10:44:06 -03:00
parent d02d21ecea
commit ff4d15cea9
6 changed files with 63 additions and 175 deletions
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examples/ssd1306/i2c_128x32/main.go
-51
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@@ -1,51 +0,0 @@
package main
import (
"machine"
"image/color"
"time"
"tinygo.org/x/drivers/ssd1306"
)
func main() {
machine.I2C0.Configure(machine.I2CConfig{
Frequency: machine.TWI_FREQ_400KHZ,
})
display := ssd1306.NewI2C(machine.I2C0)
display.Configure(ssd1306.Config{
Address: ssd1306.Address_128_32,
Width: 128,
Height: 32,
})
display.ClearDisplay()
x := int16(0)
y := int16(0)
deltaX := int16(1)
deltaY := int16(1)
for {
pixel := display.GetPixel(x, y)
c := color.RGBA{255, 255, 255, 255}
if pixel {
c = color.RGBA{0, 0, 0, 255}
}
display.SetPixel(x, y, c)
display.Display()
x += deltaX
y += deltaY
if x == 0 || x == 127 {
deltaX = -deltaX
}
if y == 0 || y == 31 {
deltaY = -deltaY
}
time.Sleep(1 * time.Millisecond)
}
}
examples/ssd1306/i2c_128x64/main.go
-60
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@@ -1,60 +0,0 @@
// This example shows how to use 128x64 display over I2C
// Tested on Seeeduino XIAO Expansion Board https://wiki.seeedstudio.com/Seeeduino-XIAO-Expansion-Board/
//
// According to manual, I2C address of the display is 0x78, but that's 8-bit address.
// TinyGo operates on 7-bit addresses and respective 7-bit address would be 0x3C, which we use below.
//
// To learn more about different types of I2C addresses, please see following page
// https://www.totalphase.com/support/articles/200349176-7-bit-8-bit-and-10-bit-I2C-Slave-Addressing
package main
import (
"machine"
"image/color"
"time"
"tinygo.org/x/drivers/ssd1306"
)
func main() {
machine.I2C0.Configure(machine.I2CConfig{
Frequency: machine.TWI_FREQ_400KHZ,
})
display := ssd1306.NewI2C(machine.I2C0)
display.Configure(ssd1306.Config{
Address: 0x3C,
Width: 128,
Height: 64,
})
display.ClearDisplay()
x := int16(0)
y := int16(0)
deltaX := int16(1)
deltaY := int16(1)
for {
pixel := display.GetPixel(x, y)
c := color.RGBA{255, 255, 255, 255}
if pixel {
c = color.RGBA{0, 0, 0, 255}
}
display.SetPixel(x, y, c)
display.Display()
x += deltaX
y += deltaY
if x == 0 || x == 127 {
deltaX = -deltaX
}
if y == 0 || y == 63 {
deltaY = -deltaY
}
time.Sleep(1 * time.Millisecond)
}
}
examples/ssd1306/spi_128x64/main.go → examples/ssd1306/main.go
+12 -14
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@@ -2,26 +2,24 @@ package main
import (
"image/color"
"machine"
"time"
"tinygo.org/x/drivers/ssd1306"
)
func main() {
machine.SPI0.Configure(machine.SPIConfig{
Frequency: 8000000,
})
display := ssd1306.NewSPI(machine.SPI0, machine.P8, machine.P7, machine.P9)
display.Configure(ssd1306.Config{
Width: 128,
Height: 64,
})
const height = 32
const width = 128
var display *ssd1306.Device
var err error
display, err = makeSSD1306(width, height)
if err != nil {
panic(err)
}
display.ClearDisplay()
x := int16(64)
y := int16(32)
x := int16(36)
y := int16(20)
deltaX := int16(1)
deltaY := int16(1)
for {
@@ -36,11 +34,11 @@ func main() {
x += deltaX
y += deltaY
if x == 0 || x == 127 {
if x == 0 || x == width-1 {
deltaX = -deltaX
}
if y == 0 || y == 63 {
if y == 0 || y == height-1 {
deltaY = -deltaY
}
time.Sleep(1 * time.Millisecond)
examples/ssd1306/main_i2c.go
+29
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@@ -0,0 +1,29 @@
//go:build !thumby
package main
import (
"machine"
"tinygo.org/x/drivers/ssd1306"
)
func makeSSD1306(width, height int16) (*ssd1306.Device, error) {
err := machine.I2C0.Configure(machine.I2CConfig{
Frequency: 400 * machine.KHz,
})
if err != nil {
return nil, err
}
address := uint16(ssd1306.Address)
if width == 128 && (height == 32 || height == 64) {
address = ssd1306.Address_128_32
}
display := ssd1306.NewI2C(machine.I2C0)
display.Configure(ssd1306.Config{
Address: address,
Width: width,
Height: height,
})
return &display, nil
}
examples/ssd1306/main_spi_thumby.go
+22
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@@ -0,0 +1,22 @@
//go:build thumby
package main
import (
"machine"
"tinygo.org/x/drivers/ssd1306"
)
func makeSSD1306(_, _ int16, address uint16) (*ssd1306.Device, error) {
// width and height are known for thumby.
machine.SPI0.Configure(machine.SPIConfig{})
display := ssd1306.NewSPI(machine.SPI0, machine.THUMBY_DC_PIN, machine.THUMBY_RESET_PIN, machine.THUMBY_CS_PIN)
display.Configure(ssd1306.Config{
Width: 72,
Height: 40,
ResetCol: ssd1306.ResetValue{28, 99},
ResetPage: ssd1306.ResetValue{0, 5},
})
return &display, nil
}
examples/ssd1306/spi_thumby/main.go
-50
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@@ -1,50 +0,0 @@
// This example using the SSD1306 OLED display over SPI on the Thumby board
// A very tiny 72x40 display.
package main
import (
"image/color"
"machine"
"time"
"tinygo.org/x/drivers/ssd1306"
)
func main() {
machine.SPI0.Configure(machine.SPIConfig{})
display := ssd1306.NewSPI(machine.SPI0, machine.THUMBY_DC_PIN, machine.THUMBY_RESET_PIN, machine.THUMBY_CS_PIN)
display.Configure(ssd1306.Config{
Width: 72,
Height: 40,
ResetCol: ssd1306.ResetValue{28, 99},
ResetPage: ssd1306.ResetValue{0, 5},
})
display.ClearDisplay()
x := int16(36)
y := int16(20)
deltaX := int16(1)
deltaY := int16(1)
for {
pixel := display.GetPixel(x, y)
c := color.RGBA{255, 255, 255, 255}
if pixel {
c = color.RGBA{0, 0, 0, 255}
}
display.SetPixel(x, y, c)
display.Display()
x += deltaX
y += deltaY
if x == 0 || x == 71 {
deltaX = -deltaX
}
if y == 0 || y == 39 {
deltaY = -deltaY
}
time.Sleep(1 * time.Millisecond)
}
}