Driver for SSD1289 LCD

2026-08-17 13:23:26 +00:00 · 2021-12-09 21:04:50 +01:00
parent 0ced12683c
commit b3c0315a09
7 changed files with 364 additions and 1 deletions
@@ -0,0 +1,37 @@
+package ssd1289
+
+import "machine"
+
+type pinBus struct {
+	pins [16]machine.Pin
+}
+
+func NewPinBus(pins [16]machine.Pin) pinBus {
+
+	for i := 0; i < 16; i++ {
+		pins[i].Configure(machine.PinConfig{Mode: machine.PinOutput})
+	}
+
+	return pinBus{
+		pins: pins,
+	}
+}
+
+func (b pinBus) Set(data uint16) {
+	b.pins[15].Set((data & (1 << 15)) != 0)
+	b.pins[14].Set((data & (1 << 14)) != 0)
+	b.pins[13].Set((data & (1 << 13)) != 0)
+	b.pins[12].Set((data & (1 << 12)) != 0)
+	b.pins[11].Set((data & (1 << 11)) != 0)
+	b.pins[10].Set((data & (1 << 10)) != 0)
+	b.pins[9].Set((data & (1 << 9)) != 0)
+	b.pins[8].Set((data & (1 << 8)) != 0)
+	b.pins[7].Set((data & (1 << 7)) != 0)
+	b.pins[6].Set((data & (1 << 6)) != 0)
+	b.pins[5].Set((data & (1 << 5)) != 0)
+	b.pins[4].Set((data & (1 << 4)) != 0)
+	b.pins[3].Set((data & (1 << 3)) != 0)
+	b.pins[2].Set((data & (1 << 2)) != 0)
+	b.pins[1].Set((data & (1 << 1)) != 0)
+	b.pins[0].Set((data & (1 << 0)) != 0)
+}
@@ -0,0 +1,23 @@
+package ssd1289
+
+type Command byte
+
+const (
+	OSCILLATIONSTART                Command = 0x00
+	DRIVEROUTPUTCONTROL                     = 0x01
+	POWERCONTROL1                           = 0x03
+	POWERCONTROL2                           = 0x0C
+	POWERCONTROL3                           = 0x0D
+	POWERCONTROL4                           = 0x0E
+	POWERCONTROL5                           = 0x1E
+	DISPLAYCONTROL                          = 0x07
+	SLEEPMODE                               = 0x10
+	ENTRYMODE                               = 0x11
+	LCDDRIVEACCONTROL                       = 0x02
+	HORIZONTALRAMADDRESSPOSITION            = 0x44
+	VERTICALRAMADDRESSSTARTPOSITION         = 0x45
+	VERTICALRAMADDRESSENDPOSITION           = 0x46
+	SETGDDRAMYADDRESSCOUNTER                = 0x4F
+	SETGDDRAMXADDRESSCOUNTER                = 0x4E
+	RAMDATAREADWRITE                        = 0x22
+)
@@ -0,0 +1,32 @@
+//go:build rp2040
+// +build rp2040
+
+package ssd1289
+
+import (
+	"device/rp"
+	"machine"
+)
+
+type rp2040Bus struct {
+	firstPin machine.Pin
+}
+
+func NewRP2040Bus(firstPin machine.Pin) rp2040Bus {
+
+	for i := uint8(0); i < 16; i++ {
+		pin := machine.Pin(i + uint8(firstPin))
+		pin.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	}
+
+	return rp2040Bus{
+		firstPin: firstPin,
+	}
+
+}
+
+func (b rp2040Bus) Set(data uint16) {
+	data32 := uint32(data)
+	rp.SIO.GPIO_OUT_CLR.Set(0xFFFF << b.firstPin)
+	rp.SIO.GPIO_OUT_SET.Set(data32 << b.firstPin)
+}
@@ -0,0 +1,200 @@
+// Package ssd1289 implements a driver for the SSD1289 led matrix controller as packaged on the TFT_320QVT board
+//
+// Datasheet: http://aitendo3.sakura.ne.jp/aitendo_data/product_img/lcd/tft2/M032C1289TP/3.2-SSD1289.pdf
+//
+package ssd1289
+
+import (
+	"image/color"
+	"machine"
+	"time"
+)
+
+type Bus interface {
+	Set(data uint16)
+}
+
+type Device struct {
+	rs  machine.Pin
+	wr  machine.Pin
+	cs  machine.Pin
+	rst machine.Pin
+	bus Bus
+}
+
+const width = int16(240)
+const height = int16(320)
+
+func New(rs machine.Pin, wr machine.Pin, cs machine.Pin, rst machine.Pin, bus Bus) Device {
+	d := Device{
+		rs:  rs,
+		wr:  wr,
+		cs:  cs,
+		rst: rst,
+		bus: bus,
+	}
+
+	rs.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	wr.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	cs.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	rst.Configure(machine.PinConfig{Mode: machine.PinOutput})
+
+	cs.High()
+	rst.High()
+	wr.High()
+
+	return d
+}
+
+func (d *Device) lcdWriteCom(cmd Command) {
+	d.rs.Low()
+	d.lcdWriteBusInt(uint16(cmd))
+}
+
+func (d *Device) lcdWriteDataInt(data uint16) {
+	d.rs.High()
+	d.lcdWriteBusInt(data)
+}
+
+func (d *Device) lcdWriteComData(cmd Command, data uint16) {
+	d.lcdWriteCom(cmd)
+	d.lcdWriteDataInt(data)
+}
+
+func (d *Device) tx() {
+	d.wr.Low()
+	d.wr.High()
+}
+
+func (d *Device) lcdWriteBusInt(data uint16) {
+	d.bus.Set(data)
+	d.tx()
+}
+
+func (d *Device) Configure() {
+	d.rst.High()
+	time.Sleep(time.Millisecond * 5)
+	d.rst.Low()
+	time.Sleep(time.Millisecond * 15)
+	d.rst.High()
+	time.Sleep(time.Millisecond * 15)
+	d.cs.Low()
+
+	//Power supply setting
+	d.lcdWriteComData(POWERCONTROL1, 0xA8A4)
+	d.lcdWriteComData(POWERCONTROL2, 0x0000)
+	d.lcdWriteComData(POWERCONTROL3, 0x080C)
+	d.lcdWriteComData(POWERCONTROL4, 0x2B00)
+	d.lcdWriteComData(POWERCONTROL5, 0x00B7)
+
+	//Set R07h at 0021h
+	d.lcdWriteComData(DISPLAYCONTROL, 0x021)
+
+	//Set R00h at 0001h
+	d.lcdWriteComData(OSCILLATIONSTART, 0x0001)
+
+	//Set R07h at 0021h
+	d.lcdWriteComData(DISPLAYCONTROL, 0x023)
+
+	//Set R10h at 0000h, Exit sleep mode
+	d.lcdWriteComData(SLEEPMODE, 0x0000)
+
+	//Wait 30ms
+	time.Sleep(time.Millisecond * 30)
+
+	//Set R07h at 0033h
+	d.lcdWriteComData(DISPLAYCONTROL, 0x033)
+
+	//Entry Mode setting (R11h)
+	//DFM   11 --> 65k
+	//TRANS  0
+	//OEDEF  0
+	//WMODE  0 --> Normal data bus
+	//DMODE 00 --> Ram
+	//TY    01 --> 262k Type A not used as we are in 65k mode.
+	//ID    11 --> Horizontal & Vertical increment
+	//AM     0 --> Horizontal
+	//LG   000 --> No compare register usage
+	d.lcdWriteComData(ENTRYMODE, 0x6030)
+
+	//LCD Driver AC Setting
+	//I couldn't make sense of the documentation fortunately 0 seems to
+	//FLD 0 --> Normal driving
+	//ENWS 0 --> POR mode
+	//BC   1 --> Less flicker
+	//EOR  1 --> Less stripey
+	//WSMD 0 --> not used in POR mode
+	//NW   0 --> Least flicker
+	d.lcdWriteComData(LCDDRIVEACCONTROL, 0x0600)
+
+	//End of documented init
+
+	//RL    0 --> Output shift direction
+	//REV   1 --> Reverse colors
+	//CAD   0 --> Cs on common
+	//BGR   0 --> use RGB color assignment
+	//SM    0 --> standard gate scan sequence
+	//TB    1 --> Display is mirrored with 0
+	//MUX 319 --> Number of lines in display
+	d.lcdWriteComData(DRIVEROUTPUTCONTROL, 0x233F)
+
+	d.cs.High()
+
+}
+
+func (d *Device) setXY(x1 uint16, y1 uint16, x2 uint16, y2 uint16) {
+	d.lcdWriteComData(HORIZONTALRAMADDRESSPOSITION, (x2<<8)+x1)
+	d.lcdWriteComData(VERTICALRAMADDRESSSTARTPOSITION, y1)
+	d.lcdWriteComData(VERTICALRAMADDRESSENDPOSITION, y2)
+	d.lcdWriteComData(SETGDDRAMXADDRESSCOUNTER, x1)
+	d.lcdWriteComData(SETGDDRAMYADDRESSCOUNTER, y1)
+	d.lcdWriteCom(RAMDATAREADWRITE)
+}
+
+func (d *Device) ClearDisplay() {
+	d.FillDisplay(color.RGBA{0, 0, 0, 255})
+}
+
+func (d *Device) FillDisplay(c color.RGBA) {
+	d.FillRect(0, 0, width, height, c)
+}
+
+func encodeColor(c color.RGBA) uint16 {
+	encoded := (uint16(c.B)&248)<<8 | (uint16(c.G)&252)<<3 | (uint16(c.R)&248)>>3
+	return encoded
+}
+
+func (d *Device) SetPixel(x, y int16, c color.RGBA) {
+
+	encoded := encodeColor(c)
+
+	d.cs.Low()
+	d.setXY(uint16(x), uint16(y), uint16(x), uint16(y))
+	d.rs.High()
+	d.lcdWriteBusInt(encoded)
+	d.cs.High()
+}
+
+func (d *Device) FillRect(x, y, w, h int16, c color.RGBA) {
+	encoded := encodeColor(c)
+
+	d.cs.Low()
+	d.setXY(uint16(x), uint16(y), uint16(x+(w-1)), uint16(y+(h-1)))
+	d.rs.High()
+	d.bus.Set(encoded)
+	for i := int64(0); i < int64(w)*int64(h); i++ {
+		d.tx()
+	}
+	d.cs.High()
+	d.rs.Low()
+
+}
+
+func (d *Device) Display() error {
+	//Not enough memory to store an entire screen on most microcontrollers
+	return nil
+}
+
+func (d *Device) Size() (x, y int16) {
+	return width, height
+}