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4 changed files with 227 additions and 444 deletions
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37
display/mt-12864a.go
View File

@ -32,9 +32,7 @@ func newMt12864a(logger *log.Logger) (Display, error) {
}
// Temp debug draw
d.logger.Println("Draw...")
d.test()
d.logger.Println("Draw finished")
return &d, nil
}
@ -107,30 +105,19 @@ func (d *displayMt12864a) test() {
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0xFF,
},
}
_ = Logo128
d.logger.Println("Write")
d.dev.WriteCodeL(0xB8)
d.dev.WriteCodeL(0x40)
d.dev.WriteDataL(47)
d.logger.Println("Read")
// d.dev.WriteCodeL(0xB8)
d.dev.WriteCodeL(0x40)
d.logger.Println(d.dev.ReadDataL())
d.logger.Println(d.dev.ReadDataL())
// for p := byte(0); p < 8; p++ {
// d.dev.WriteCodeL(p | 0xB8)
// d.dev.WriteCodeL(0x40)
// for c := 0; c < 64; c++ {
// d.dev.WriteDataL(Logo128[p][c])
// }
// d.dev.WriteCodeR(p | 0xB8)
// d.dev.WriteCodeR(0x40)
// for c := 64; c < 128; c++ {
// d.dev.WriteDataR(Logo128[p][c])
// }
// }
for p := byte(0); p < 8; p++ {
d.dev.WriteCodeL(p | 0xB8)
d.dev.WriteCodeL(0x40)
for c := 0; c < 64; c++ {
d.dev.WriteDataL(Logo128[p][c])
}
d.dev.WriteCodeR(p | 0xB8)
d.dev.WriteCodeR(0x40)
for c := 64; c < 128; c++ {
d.dev.WriteDataR(Logo128[p][c])
}
}
}
func (d *displayMt12864a) GetBounds() image.Rectangle {

205
pkg/mt12232a/mt12232a.go
View File

@ -1,205 +0,0 @@
package mt12232a
import (
"fmt"
"io"
"log"
"time"
"gitea.unprism.ru/yotia/display-test/pkg/parallel8bit"
"github.com/stianeikeland/go-rpio/v4"
)
type mt12232a struct {
logger *log.Logger
dev parallel8bit.Device
pinCS rpio.Pin
pinRES rpio.Pin
}
type Device interface {
PowerOn() error
SetPixel(x, y byte, c bool) error
WriteCodeL(c byte) error
WriteCodeR(c byte) error
WriteDataL(b byte) error
WriteDataR(b byte) error
ReadDataL() (byte, error)
ReadDataR() (byte, error)
ReadStatus(cs rpio.State) byte
io.Closer
}
func New(logger *log.Logger) (Device, error) {
rpio.Open()
d := mt12232a{
logger: logger,
dev: parallel8bit.New(logger, parallel8bit.DevicePins{
PinA0: rpio.Pin(18),
PinRW: rpio.Pin(17),
PinE: rpio.Pin(27),
PinDB0: rpio.Pin(22),
PinDB1: rpio.Pin(10),
PinDB2: rpio.Pin(9), // From 21
PinDB3: rpio.Pin(11),
PinDB4: rpio.Pin(12),
PinDB5: rpio.Pin(16), // From 32
PinDB6: rpio.Pin(20), // From 31
PinDB7: rpio.Pin(13), // From 33
}),
pinCS: rpio.Pin(19),
pinRES: rpio.Pin(21),
}
d.pinCS.Output()
d.pinRES.Output()
d.dev.Reset()
return &d, nil
}
func (d *mt12232a) Close() error {
return rpio.Close()
}
func (d *mt12232a) SetPixel(x, y byte, c bool) error {
// var c8 byte
// var mask byte
// Check bounds
if x > 127 || y > 63 {
return fmt.Errorf("positions out of bounds")
}
if x < 64 { // Left crystal
d.WriteCodeL(0xB8 | (y >> 3)) // Set page
d.WriteCodeL(0x40 | x) // Set addr
// c8=ReadDataL(); // ?? ok
// c8=ReadDataL(); // Read byte
// m8=1<<(y&0x07);//Вычислить маску нужного бита в байте
// if (c==1) //Зажигать точку?
// c8|=m8//Установить нужный бит в байте
// else //Или гасить точку?
// c8&=~m8;//Сбросить нужный бит в байте
// WriteCodeL(0x40|x);//Снова установить адрес нужного байта
d.WriteDataL(0x34) // Write byte
}
return nil
}
func (d *mt12232a) PowerOn() error {
d.logger.Println(d.ReadStatus(0)) // Should be 0
d.logger.Println("Reset")
d.pinRES.Low()
time.Sleep(time.Microsecond)
d.logger.Println(d.ReadStatus(0)) // Should be 48 (power off and reset)
d.pinRES.High()
time.Sleep(10 * time.Microsecond)
d.logger.Println(d.ReadStatus(0)) // Should be 32 (power off)
// Module is reset and should be turned off
if d.ReadStatus(0) == 0 || d.ReadStatus(1) == 0 {
return fmt.Errorf("no response from display(or it is possible that it is turned on but...)")
}
d.logger.Println("Power on")
d.WriteCodeL(0xE2) // Reset
d.WriteCodeR(0xE2) // Reset
d.WriteCodeL(0xEE) // ReadModifyWrite off
d.WriteCodeR(0xEE) // ReadModifyWrite off
d.WriteCodeL(0xA4) // Turn on common mode
d.WriteCodeR(0xA4) // Turn on common mode
d.WriteCodeL(0xA9) // Multiplex 1/32
d.WriteCodeR(0xA9) // Multiplex 1/32
d.WriteCodeL(0xC0) // Top line to 0
d.WriteCodeR(0xC0) // Top line to 0
d.WriteCodeL(0xA1) // Invert scan RAM
d.WriteCodeR(0xA0) // NonInvert scan RAM
d.logger.Println("Display on")
d.WriteCodeL(0xAF) // Display on
d.WriteCodeR(0xAF) // Display on
// Check that crystals are turned on
if (d.ReadStatus(0) & (1 << 5)) != 0 {
return fmt.Errorf("Left cristal is still off")
}
if (d.ReadStatus(1) & (1 << 5)) != 0 {
return fmt.Errorf("Right cristal is still off")
}
return nil
}
// Write codes
func (d *mt12232a) WriteCodeL(c byte) error {
return d.writeByte(c, 0, 0)
}
func (d *mt12232a) WriteCodeR(c byte) error {
return d.writeByte(c, 0, 1)
}
// Write data as byte
func (d *mt12232a) WriteDataL(b byte) error {
return d.writeByte(b, 1, 0)
}
func (d *mt12232a) WriteDataR(b byte) error {
return d.writeByte(b, 1, 1)
}
// Read data
func (d *mt12232a) ReadDataL() (byte, error) {
return d.readByte(1, 0)
}
func (d *mt12232a) ReadDataR() (byte, error) {
return d.readByte(1, 1)
}
// Low level functions
func (d *mt12232a) writeByte(b byte, cd, cs rpio.State) error {
// d.logger.Println("Write byte", b, cd, l, r)
if err := d.waitReady(cs); err != nil {
return fmt.Errorf("wait ready: %w", err)
}
d.pinCS.Write(cs) // Select cristals
d.dev.WriteByte(b, cd)
return nil
}
func (d *mt12232a) readByte(cd, cs rpio.State) (byte, error) {
// Setup
if err := d.waitReady(cs); err != nil {
return 0, fmt.Errorf("wait ready: %w", err)
}
d.pinCS.Write(cs) // Select cristals
return d.dev.ReadByte(cd), nil
}
// Wait, checking status byte
func (d *mt12232a) waitReady(cs rpio.State) error {
d.pinCS.Write(cs) // Select cristals
return d.dev.WaitReady()
}
func (d *mt12232a) ReadStatus(cs rpio.State) byte {
d.pinCS.Write(cs) // Select cristals
return d.dev.ReadByte(1)
}

259
pkg/mt12864a/mt12864a.go
View File

@ -6,15 +6,31 @@ import (
"log"
"time"
"gitea.unprism.ru/yotia/display-test/pkg/parallel8bit"
"github.com/stianeikeland/go-rpio/v4"
)
const (
enablePrintPins = false
adressWriteTimeout = 140 * time.Nanosecond
dataStrobeTimeout = 250 * time.Nanosecond // (Data transfer)
maxWaitCycles = 100
)
type mt12864a struct {
logger *log.Logger
dev parallel8bit.Device
// GPIO pins
pinA0 rpio.Pin
pinRW rpio.Pin
pinE rpio.Pin
pinDB0 rpio.Pin
pinDB1 rpio.Pin
pinDB2 rpio.Pin
pinDB3 rpio.Pin
pinDB4 rpio.Pin
pinDB5 rpio.Pin
pinDB6 rpio.Pin
pinDB7 rpio.Pin
pinE1 rpio.Pin
pinE2 rpio.Pin
pinRES rpio.Pin
@ -41,31 +57,34 @@ func New(logger *log.Logger) (Device, error) {
d := mt12864a{
logger: logger,
pinA0: rpio.Pin(18),
pinRW: rpio.Pin(17),
pinE: rpio.Pin(27),
dev: parallel8bit.New(logger, parallel8bit.DevicePins{
PinA0: rpio.Pin(18),
PinRW: rpio.Pin(17),
PinE: rpio.Pin(27),
pinDB0: rpio.Pin(22),
pinDB1: rpio.Pin(10),
pinDB2: rpio.Pin(9), // From 21
pinDB3: rpio.Pin(11),
pinDB4: rpio.Pin(12),
pinDB5: rpio.Pin(16), // From 32
pinDB6: rpio.Pin(20), // From 31
pinDB7: rpio.Pin(13), // From 33
PinDB0: rpio.Pin(22),
PinDB1: rpio.Pin(10),
PinDB2: rpio.Pin(9), // From 21
PinDB3: rpio.Pin(11),
PinDB4: rpio.Pin(12),
PinDB5: rpio.Pin(16), // From 32
PinDB6: rpio.Pin(20), // From 31
PinDB7: rpio.Pin(13), // From 33
}),
// Reverted
// pinDB7: rpio.Pin(15),
// pinDB6: rpio.Pin(19),
// pinDB5: rpio.Pin(21),
// pinDB4: rpio.Pin(23),
// pinDB3: rpio.Pin(27),
// pinDB2: rpio.Pin(32),
// pinDB1: rpio.Pin(31),
// pinDB0: rpio.Pin(33),
pinE1: rpio.Pin(19),
pinE2: rpio.Pin(26),
pinRES: rpio.Pin(21),
}
d.pinE1.Output()
d.pinE2.Output()
d.pinRES.Output()
d.dev.Reset()
d.AllOutput()
return &d, nil
}
@ -100,35 +119,38 @@ func (d *mt12864a) SetPixel(x, y byte, c bool) error {
}
func (d *mt12864a) PowerOn() error {
d.logger.Println(d.ReadStatus(1, 0)) // Should be 0
d.logger.Println("Reset")
d.pinA0.Low()
d.pinRW.Low()
d.pinE.Low()
d.pinDB0.Low()
d.pinDB1.Low()
d.pinDB2.Low()
d.pinDB3.Low()
d.pinDB4.Low()
d.pinDB5.Low()
d.pinDB6.Low()
d.pinDB7.Low()
d.pinE1.Low()
d.pinE2.Low()
d.pinRES.Low()
d.logger.Println("All low ")
d.PrintPins()
d.logger.Println("Power on")
d.pinE.Low()
d.pinRES.Low()
time.Sleep(time.Microsecond)
d.logger.Println(d.ReadStatus(1, 0)) // Should be 48 (power off and reset)
d.pinRES.High()
time.Sleep(10 * time.Microsecond)
d.logger.Println(d.ReadStatus(1, 0)) // Should be 32 (power off)
// Module is reset and should be turned off
if d.ReadStatus(1, 0) == 0 || d.ReadStatus(0, 1) == 0 {
return fmt.Errorf("no response from display(or it is possible that it is turned on but...)")
}
d.logger.Println("Power on")
d.PrintPins()
d.logger.Println("Top line to 0")
d.WriteCodeL(0xC0) // Top line to 0
d.WriteCodeR(0xC0) // Top line to 0
d.PrintPins()
d.logger.Println("Display on")
d.WriteCodeL(0x3F) // Display on
d.WriteCodeR(0x3F) // Display on
// Check that crystals are turned on
if (d.ReadStatus(1, 0) & (1 << 5)) != 0 {
return fmt.Errorf("Left cristal is still off")
}
if (d.ReadStatus(0, 1) & (1 << 5)) != 0 {
return fmt.Errorf("Right cristal is still off")
}
d.PrintPins()
return nil
}
@ -166,7 +188,7 @@ func (d *mt12864a) ReadDataR() (byte, error) {
// Low level functions
func (d *mt12864a) writeByte(b byte, cd, l, r rpio.State) error {
// d.logger.Println("Write byte", b, cd, l, r)
d.logger.Println("Write byte", b, cd, l, r)
if l == rpio.High && r == rpio.High {
d.logger.Println("L and R are high!!!")
return fmt.Errorf("cannot write left and right at the same times")
@ -174,10 +196,37 @@ func (d *mt12864a) writeByte(b byte, cd, l, r rpio.State) error {
if err := d.waitReady(l, r); err != nil {
return fmt.Errorf("wait ready: %w", err)
}
d.busOutput()
d.pinRW.Low() // We write
d.pinA0.Write(cd)
d.pinE1.Write(l) // Select cristals
d.pinE2.Write(r) // Select cristals
d.dev.WriteByte(b, cd)
// Write bus
d.pinDB0.Write(rpio.State((b >> 0) & 1))
d.pinDB1.Write(rpio.State((b >> 1) & 1))
d.pinDB2.Write(rpio.State((b >> 2) & 1))
d.pinDB3.Write(rpio.State((b >> 3) & 1))
d.pinDB4.Write(rpio.State((b >> 4) & 1))
d.pinDB5.Write(rpio.State((b >> 5) & 1))
d.pinDB6.Write(rpio.State((b >> 6) & 1))
d.pinDB7.Write(rpio.State((b >> 7) & 1))
// Strobe start
d.pinE.High()
time.Sleep(dataStrobeTimeout)
// Strobe end
d.pinE.Low()
d.pinDB0.Low()
d.pinDB1.Low()
d.pinDB2.Low()
d.pinDB3.Low()
d.pinDB4.Low()
d.pinDB5.Low()
d.pinDB6.Low()
d.pinDB7.Low()
time.Sleep(time.Millisecond - dataStrobeTimeout - adressWriteTimeout)
return nil
}
@ -188,24 +237,146 @@ func (d *mt12864a) readByte(cd, l, r rpio.State) (byte, error) {
}
// Setup
var b byte
if err := d.waitReady(l, r); err != nil {
return 0, fmt.Errorf("wait ready: %w", err)
}
d.busOutput()
d.pinRW.High() // We write
d.pinA0.Write(cd)
d.pinE1.Write(l) // Select cristals
d.pinE2.Write(r) // Select cristals
return d.dev.ReadByte(cd), nil
// Strobe start
d.pinE.High()
time.Sleep(dataStrobeTimeout)
// Read
b = uint8(d.pinDB0.Read()) |
(uint8(d.pinDB1.Read()) << 1) |
(uint8(d.pinDB2.Read()) << 2) |
(uint8(d.pinDB3.Read()) << 3) |
(uint8(d.pinDB4.Read()) << 4) |
(uint8(d.pinDB5.Read()) << 5) |
(uint8(d.pinDB6.Read()) << 6) |
(uint8(d.pinDB7.Read()) << 7)
// Strobe end
d.pinE.Low()
time.Sleep(time.Millisecond - dataStrobeTimeout - adressWriteTimeout)
return b, nil
}
// Wait, checking status byte
func (d *mt12864a) waitReady(l, r rpio.State) error {
d.logger.Println("Wait ready", l, r)
d.busInput() // Set bus to input
d.pinRW.High() // We read
d.pinA0.Low() // Status
d.pinE1.Write(l) // Select cristals
d.pinE2.Write(r) // Select cristals
return d.dev.WaitReady()
time.Sleep(adressWriteTimeout)
// Strobe start
d.pinE.High()
time.Sleep(dataStrobeTimeout)
// Wait status flag drop
ok := false
d.busInput() // Set bus to input
for counter := 0; counter < maxWaitCycles; counter++ {
if d.pinDB7.Read() != rpio.High {
d.logger.Printf("BUS:%d%d%d%d%d%d%d%d\n", d.pinDB0.Read(), d.pinDB1.Read(), d.pinDB2.Read(), d.pinDB3.Read(), d.pinDB4.Read(), d.pinDB5.Read(), d.pinDB6.Read(), d.pinDB7.Read())
ok = true
break
}
}
if !ok {
return fmt.Errorf("busy timeout")
}
// Strobe end
d.pinE.Low()
time.Sleep(time.Millisecond - dataStrobeTimeout - adressWriteTimeout)
d.logger.Println("Ready")
return nil
}
func (d *mt12864a) ReadStatus(l, r rpio.State) byte {
d.busInput() // Set bus to input
d.pinRW.High() // We read
d.pinA0.Low() // Status
d.pinE1.Write(l) // Select cristals
d.pinE2.Write(r) // Select cristals
return d.dev.ReadByte(1)
time.Sleep(adressWriteTimeout)
// Strobe start
d.pinE.High()
time.Sleep(dataStrobeTimeout)
d.busInput()
var b byte = uint8(d.pinDB0.Read()) |
(uint8(d.pinDB1.Read()) << 1) |
(uint8(d.pinDB2.Read()) << 2) |
(uint8(d.pinDB3.Read()) << 3) |
(uint8(d.pinDB4.Read()) << 4) |
(uint8(d.pinDB5.Read()) << 5) |
(uint8(d.pinDB6.Read()) << 6) |
(uint8(d.pinDB7.Read()) << 7)
// Strobe end
d.pinE.Low()
time.Sleep(time.Millisecond - dataStrobeTimeout - adressWriteTimeout)
return b
}
func (d *mt12864a) PrintPins() {
if !enablePrintPins {
return
}
d.AllInput()
d.logger.Printf("A0:%d RW:%d E:%d BUS:%d%d%d%d%d%d%d%d E1:%d E2:%d RES:%d\n", d.pinA0.Read(), d.pinRW.Read(), d.pinE.Read(), d.pinDB0.Read(), d.pinDB1.Read(), d.pinDB2.Read(), d.pinDB3.Read(), d.pinDB4.Read(), d.pinDB5.Read(), d.pinDB6.Read(), d.pinDB7.Read(), d.pinE1.Read(), d.pinE2.Read(), d.pinRES.Read())
d.AllOutput()
}
func (d *mt12864a) AllOutput() {
d.pinA0.Output()
d.pinRW.Output()
d.pinE.Output()
d.pinE1.Output()
d.pinE2.Output()
d.pinRES.Output()
d.busOutput()
}
func (d *mt12864a) AllInput() {
d.pinA0.Input()
d.pinRW.Input()
d.pinE.Input()
d.pinE1.Input()
d.pinE2.Input()
d.pinRES.Input()
d.busInput()
}
// Set bus pins to output
func (d *mt12864a) busOutput() {
d.pinDB0.Output()
d.pinDB1.Output()
d.pinDB2.Output()
d.pinDB3.Output()
d.pinDB4.Output()
d.pinDB5.Output()
d.pinDB6.Output()
d.pinDB7.Output()
}
func (d *mt12864a) busInput() {
d.pinDB0.Input()
d.pinDB1.Input()
d.pinDB2.Input()
d.pinDB3.Input()
d.pinDB4.Input()
d.pinDB5.Input()
d.pinDB6.Input()
d.pinDB7.Input()
}

170
pkg/parallel8bit/parallel8bit.go
View File

@ -1,170 +0,0 @@
package parallel8bit
import (
"fmt"
"log"
"time"
"github.com/stianeikeland/go-rpio/v4"
)
const (
adressWriteTimeout = 140 * time.Nanosecond
dataStrobeTimeout = 250 * time.Nanosecond // (Data transfer)
maxWaitCycles = 100
)
// Interface for MT displays (do not set cristals bits)
type Device interface {
Reset()
WriteByte(b byte, cd rpio.State)
ReadByte(cd rpio.State) byte
WaitReady() error
}
type DevicePins struct {
// GPIO pins
PinA0 rpio.Pin
PinRW rpio.Pin
PinE rpio.Pin
PinDB0 rpio.Pin
PinDB1 rpio.Pin
PinDB2 rpio.Pin
PinDB3 rpio.Pin
PinDB4 rpio.Pin
PinDB5 rpio.Pin
PinDB6 rpio.Pin
PinDB7 rpio.Pin
PinE1 rpio.Pin
PinE2 rpio.Pin
PinRES rpio.Pin
}
type device struct {
logger *log.Logger
DevicePins
}
func New(logger *log.Logger, pins DevicePins) Device {
return &device{
logger: logger,
DevicePins: pins,
}
}
func (d *device) Reset() {
d.PinA0.Output()
d.PinRW.Output()
d.PinE.Output()
d.PinRES.Output()
d.busOutput()
d.PinE.Low()
}
func (d *device) WriteByte(b byte, cd rpio.State) {
// d.logger.Println("Write byte", b, cd, l, r)
d.busOutput()
d.PinRW.Low() // We write
d.PinA0.Write(cd)
// Write bus
d.PinDB0.Write(rpio.State((b >> 0) & 1))
d.PinDB1.Write(rpio.State((b >> 1) & 1))
d.PinDB2.Write(rpio.State((b >> 2) & 1))
d.PinDB3.Write(rpio.State((b >> 3) & 1))
d.PinDB4.Write(rpio.State((b >> 4) & 1))
d.PinDB5.Write(rpio.State((b >> 5) & 1))
d.PinDB6.Write(rpio.State((b >> 6) & 1))
d.PinDB7.Write(rpio.State((b >> 7) & 1))
// Strobe start
d.PinE.High()
time.Sleep(dataStrobeTimeout)
// Strobe end
d.PinE.Low()
time.Sleep(time.Millisecond - dataStrobeTimeout - adressWriteTimeout)
}
func (d *device) ReadByte(cd rpio.State) byte {
// Setup
var b byte
d.busOutput()
d.PinRW.High() // We write
d.PinA0.Write(cd)
// Strobe start
d.PinE.High()
time.Sleep(dataStrobeTimeout)
// Read
b = uint8(d.PinDB0.Read()) |
(uint8(d.PinDB1.Read()) << 1) |
(uint8(d.PinDB2.Read()) << 2) |
(uint8(d.PinDB3.Read()) << 3) |
(uint8(d.PinDB4.Read()) << 4) |
(uint8(d.PinDB5.Read()) << 5) |
(uint8(d.PinDB6.Read()) << 6) |
(uint8(d.PinDB7.Read()) << 7)
// Strobe end
d.PinE.Low()
time.Sleep(time.Millisecond - dataStrobeTimeout - adressWriteTimeout)
return b
}
func (d *device) WaitReady() error {
d.busInput() // Set bus to input
d.PinRW.High() // We read
d.PinA0.Low() // Status
time.Sleep(adressWriteTimeout)
// Strobe start
d.PinE.High()
time.Sleep(dataStrobeTimeout)
// Wait status flag drop
ok := false
d.busInput() // Set bus to input
for counter := 0; counter < maxWaitCycles; counter++ {
if d.PinDB7.Read() != rpio.High {
//d.logger.Printf("BUS:%d%d%d%d%d%d%d%d\n", d.pinDB0.Read(), d.pinDB1.Read(), d.pinDB2.Read(), d.pinDB3.Read(), d.pinDB4.Read(), d.pinDB5.Read(), d.pinDB6.Read(), d.pinDB7.Read())
ok = true
break
}
}
if !ok {
return fmt.Errorf("busy timeout")
}
// Strobe end
d.PinE.Low()
time.Sleep(time.Millisecond - dataStrobeTimeout - adressWriteTimeout)
// d.logger.Println("Ready")
return nil
}
// Set bus pins to output
func (d *device) busOutput() {
d.PinDB0.Output()
d.PinDB1.Output()
d.PinDB2.Output()
d.PinDB3.Output()
d.PinDB4.Output()
d.PinDB5.Output()
d.PinDB6.Output()
d.PinDB7.Output()
}
func (d *device) busInput() {
d.PinDB0.Input()
d.PinDB1.Input()
d.PinDB2.Input()
d.PinDB3.Input()
d.PinDB4.Input()
d.PinDB5.Input()
d.PinDB6.Input()
d.PinDB7.Input()
}