init: intial commit

2026-01-21 10:17:31 -08:00 · 2025-11-27 22:14:01 -07:00
commit fd93e7619c
6 changed files with 332 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1 @@
+.vscode/tasks.json
--- a/devices/N64.go
+++ b/devices/N64.go
@@ -0,0 +1,125 @@
+package devices
+
+import (
+	"encoding/binary"
+	"fmt"
+	"log"
+
+	"go.bug.st/serial"
+)
+
+const (
+	MAX_DATA_SIZE = 512
+)
+
+type N64 interface {
+	Start() error
+	Close() error
+	SendData(data []byte) error
+	ReceiveData() ([]byte, error)
+}
+
+type EverDrive struct {
+	PortName string
+	port     serial.Port
+	running  bool
+}
+
+func (e *EverDrive) Start() error {
+	mode := &serial.Mode{
+		BaudRate: 9600,
+		DataBits: 8,
+		Parity:   serial.NoParity,   // Changed from EvenParity
+		StopBits: serial.OneStopBit, // Changed from TwoStopBits
+	}
+	port, err := serial.Open(e.PortName, mode)
+	if err != nil {
+		return err
+	}
+
+	e.port = port
+	e.running = true
+	return nil
+}
+
+func (e *EverDrive) Close() error {
+	return nil
+}
+
+func (e *EverDrive) SendData(data []byte) error {
+	if !e.running {
+		return fmt.Errorf("N64 is not running")
+	}
+
+	// --- 1. CONSTRUCT THE UNFLOADER PACKET ---
+
+	// Header (4 Bytes)
+	packet := []byte{'D', 'M', 'A', '@'}
+
+	// Data Type (1 Byte)
+	// using 0x01 (DataTypeText) is fine, or define your own.
+	packet = append(packet, 0x01)
+
+	// Size (3 Bytes, Big Endian)
+	// This tells usb.c how many REAL bytes of payload to expect.
+	lengthBuf := make([]byte, 4)
+	binary.BigEndian.PutUint32(lengthBuf, uint32(len(data)))
+	packet = append(packet, lengthBuf[1:]...) // Skip first byte, append last 3
+
+	// Payload (The Coin)
+	packet = append(packet, data...)
+
+	// PAYLOAD ALIGNMENT (Crucial per usb.c line 640)
+	// len = ALIGN(usb_datasize, 2);
+	// If we send 1 byte (odd), usb.c will read 2 bytes.
+	// We must provide that padding byte or it will eat the 'C' of the footer.
+	if len(data)%2 != 0 {
+		packet = append(packet, 0x00)
+	}
+
+	// Footer (4 Bytes)
+	packet = append(packet, 'C', 'M', 'P', 'H')
+
+	// --- 2. HARDWARE PADDING (The Fix) ---
+	// The EverDrive needs a 512-byte transfer to wake up.
+	// We pad the rest of the buffer with zeros.
+	// The N64 will read the packet above, then fail 'DMA@' checks
+	// on the zeros until the buffer is empty. This is expected behavior.
+
+	blockSize := 512
+	totalLen := len(packet)
+
+	if totalLen < blockSize {
+		padding := make([]byte, blockSize-totalLen)
+		packet = append(packet, padding...)
+	}
+
+	// Write exactly 512 bytes
+	_, err := e.port.Write(packet)
+	if err != nil {
+		log.Printf("❌ N64 Write Error: %v", err)
+		return err
+	}
+
+	log.Printf("📤 Sent Packet (Payload: %v | Total Wire: %d)", data, len(packet))
+	return nil
+}
+func (e *EverDrive) ReceiveData() ([]byte, error) {
+	if !e.running {
+		return nil, fmt.Errorf("N64 is not running")
+	}
+
+	data := make([]byte, MAX_DATA_SIZE)
+	_, err := e.port.Read(data)
+	if err != nil {
+		log.Printf("❌ N64 Read Error: %v", err)
+		return nil, err
+	}
+
+	log.Printf("📥 Received %s from N64", data)
+	return data, nil
+}
+
+func NewEverDrive(portName string) *EverDrive {
+	return &EverDrive{PortName: portName}
+}
--- a/devices/coin_acceptor.go
+++ b/devices/coin_acceptor.go
@@ -0,0 +1,96 @@
+package devices
+
+import (
+	"fmt"
+	"log"
+
+	"go.bug.st/serial"
+)
+
+type Coin int
+
+func (c Coin) Value() int {
+	return int(c)
+}
+
+func (c Coin) String() string {
+	switch c {
+	case Quarter:
+		return "Quarter (25c)"
+	case Dime:
+		return "Dime (10c)"
+	case Nickel:
+		return "Nickel (5c)"
+	case Penny:
+		return "Penny (1c)"
+	default:
+		return fmt.Sprintf("Unknown Coin (%d)", c)
+	}
+}
+
+const (
+	Quarter Coin = 25
+	Dime    Coin = 10
+	Nickel  Coin = 5
+	Penny   Coin = 1
+)
+
+type CoinAcceptor interface {
+	Start() error
+	Close() error
+	Coins() <-chan Coin
+}
+
+type DG600F struct {
+	PortName string
+	BaudRate int
+	coins    chan Coin
+	port     serial.Port
+}
+
+func (c *DG600F) Start() error {
+	mode := &serial.Mode{
+		BaudRate: c.BaudRate,
+		DataBits: 8,
+		Parity:   serial.EvenParity,
+		StopBits: serial.TwoStopBits,
+	}
+
+	port, err := serial.Open(c.PortName, mode)
+	if err != nil {
+		return err
+	}
+
+	c.port = port
+	c.coins = make(chan Coin, 10)
+	log.Println("Coin acceptor started")
+
+	go c.listen()
+
+	return nil
+}
+
+func (c *DG600F) listen() {
+	for {
+		data := make([]byte, 1)
+		_, err := c.port.Read(data)
+		if err != nil {
+			log.Println("Error reading from port:", err)
+			return
+		}
+
+		if data[0] == 0x00 {
+			continue
+		}
+
+		c.coins <- Coin(data[0])
+	}
+}
+
+func (c *DG600F) Close() error {
+	return c.port.Close()
+}
+
+func (c *DG600F) Coins() <-chan Coin {
+	return c.coins
+}
--- a/go.mod
+++ b/go.mod
@@ -0,0 +1,27 @@
+module github.com/PrintAndPanic/microtransactions64-server
+
+go 1.25.3
+
+require (
+	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
+	github.com/charmbracelet/bubbletea v1.3.10 // indirect
+	github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc // indirect
+	github.com/charmbracelet/lipgloss v1.1.0 // indirect
+	github.com/charmbracelet/x/ansi v0.10.1 // indirect
+	github.com/charmbracelet/x/cellbuf v0.0.13-0.20250311204145-2c3ea96c31dd // indirect
+	github.com/charmbracelet/x/term v0.2.1 // indirect
+	github.com/creack/goselect v0.1.2 // indirect
+	github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect
+	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-localereader v0.0.1 // indirect
+	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
+	github.com/muesli/cancelreader v0.2.2 // indirect
+	github.com/muesli/termenv v0.16.0 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
+	go.bug.st/serial v1.6.4 // indirect
+	golang.org/x/sys v0.36.0 // indirect
+	golang.org/x/text v0.3.8 // indirect
+)
--- a/go.sum
+++ b/go.sum
@@ -0,0 +1,45 @@
+github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
+github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
+github.com/charmbracelet/bubbletea v1.3.10 h1:otUDHWMMzQSB0Pkc87rm691KZ3SWa4KUlvF9nRvCICw=
+github.com/charmbracelet/bubbletea v1.3.10/go.mod h1:ORQfo0fk8U+po9VaNvnV95UPWA1BitP1E0N6xJPlHr4=
+github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc h1:4pZI35227imm7yK2bGPcfpFEmuY1gc2YSTShr4iJBfs=
+github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc/go.mod h1:X4/0JoqgTIPSFcRA/P6INZzIuyqdFY5rm8tb41s9okk=
+github.com/charmbracelet/lipgloss v1.1.0 h1:vYXsiLHVkK7fp74RkV7b2kq9+zDLoEU4MZoFqR/noCY=
+github.com/charmbracelet/lipgloss v1.1.0/go.mod h1:/6Q8FR2o+kj8rz4Dq0zQc3vYf7X+B0binUUBwA0aL30=
+github.com/charmbracelet/x/ansi v0.10.1 h1:rL3Koar5XvX0pHGfovN03f5cxLbCF2YvLeyz7D2jVDQ=
+github.com/charmbracelet/x/ansi v0.10.1/go.mod h1:3RQDQ6lDnROptfpWuUVIUG64bD2g2BgntdxH0Ya5TeE=
+github.com/charmbracelet/x/cellbuf v0.0.13-0.20250311204145-2c3ea96c31dd h1:vy0GVL4jeHEwG5YOXDmi86oYw2yuYUGqz6a8sLwg0X8=
+github.com/charmbracelet/x/cellbuf v0.0.13-0.20250311204145-2c3ea96c31dd/go.mod h1:xe0nKWGd3eJgtqZRaN9RjMtK7xUYchjzPr7q6kcvCCs=
+github.com/charmbracelet/x/term v0.2.1 h1:AQeHeLZ1OqSXhrAWpYUtZyX1T3zVxfpZuEQMIQaGIAQ=
+github.com/charmbracelet/x/term v0.2.1/go.mod h1:oQ4enTYFV7QN4m0i9mzHrViD7TQKvNEEkHUMCmsxdUg=
+github.com/creack/goselect v0.1.2 h1:2DNy14+JPjRBgPzAd1thbQp4BSIihxcBf0IXhQXDRa0=
+github.com/creack/goselect v0.1.2/go.mod h1:a/NhLweNvqIYMuxcMOuWY516Cimucms3DglDzQP3hKY=
+github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f h1:Y/CXytFA4m6baUTXGLOoWe4PQhGxaX0KpnayAqC48p4=
+github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f/go.mod h1:vw97MGsxSvLiUE2X8qFplwetxpGLQrlU1Q9AUEIzCaM=
+github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
+github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-localereader v0.0.1 h1:ygSAOl7ZXTx4RdPYinUpg6W99U8jWvWi9Ye2JC/oIi4=
+github.com/mattn/go-localereader v0.0.1/go.mod h1:8fBrzywKY7BI3czFoHkuzRoWE9C+EiG4R1k4Cjx5p88=
+github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc=
+github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 h1:ZK8zHtRHOkbHy6Mmr5D264iyp3TiX5OmNcI5cIARiQI=
+github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6/go.mod h1:CJlz5H+gyd6CUWT45Oy4q24RdLyn7Md9Vj2/ldJBSIo=
+github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA=
+github.com/muesli/cancelreader v0.2.2/go.mod h1:3XuTXfFS2VjM+HTLZY9Ak0l6eUKfijIfMUZ4EgX0QYo=
+github.com/muesli/termenv v0.16.0 h1:S5AlUN9dENB57rsbnkPyfdGuWIlkmzJjbFf0Tf5FWUc=
+github.com/muesli/termenv v0.16.0/go.mod h1:ZRfOIKPFDYQoDFF4Olj7/QJbW60Ol/kL1pU3VfY/Cnk=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no=
+github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e/go.mod h1:RbqR21r5mrJuqunuUZ/Dhy/avygyECGrLceyNeo4LiM=
+go.bug.st/serial v1.6.4 h1:7FmqNPgVp3pu2Jz5PoPtbZ9jJO5gnEnZIvnI1lzve8A=
+go.bug.st/serial v1.6.4/go.mod h1:nofMJxTeNVny/m6+KaafC6vJGj3miwQZ6vW4BZUGJPI=
+golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
+golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
+golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
--- a/main.go
+++ b/main.go
@@ -0,0 +1,38 @@
+package main
+
+import (
+	"flag"
+	"log"
+
+	"github.com/PrintAndPanic/microtransactions64-server/devices"
+)
+
+func main() {
+	// "n64" defaults to /dev/ttyUSB0 (The Everdrive)
+	n64Port := flag.String("n64", "/dev/ttyUSB0", "Serial port for the N64 Everdrive")
+
+	// 2. Parse Flags (Critical: Must be called before accessing the variables)
+	flag.Parse()
+
+	log.Printf("🚀 STARTING: N64 on %s", *n64Port)
+	// --- CONFIGURATION ---
+	coinPortName := "/dev/serial0"
+	coinPortBaud := 9600
+	// ---------------------
+
+	// 1. Configure the Serial Port
+	coinAcceptor := devices.DG600F{PortName: coinPortName, BaudRate: coinPortBaud}
+	coinAcceptor.Start()
+	defer coinAcceptor.Close()
+
+	n64 := devices.NewEverDrive(*n64Port)
+	n64.Start()
+	defer n64.Close()
+
+	// // 2. Listen for coins
+	for coin := range coinAcceptor.Coins() {
+		log.Println("Coin accepted:", coin)
+		n64.SendData([]byte{byte(coin)})
+	}
+
+}