initial commit

.gitignore

@@ -0,0 +1 @@
+/dist

.goreleaser.yml

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+project_name: eeprom-programmer
+
+release:
+  github:
+    owner: TheCacophonyProject
+    name: eeprom-programmer
+  name_template: '{{.Tag}}'
+
+builds:
+- id: eeprom-programmer
+  binary: eeprom-programmer
+  main: ./cmd/eeprom-programmer
+  goos:
+    - linux
+  goarch:
+    - arm64
+  ldflags: -s -w -X main.version={{.Version}}
+
+nfpms:
+- vendor: The Cacophony Project
+  homepage: http://cacophony.org.nz/
+  maintainer: Cacophony Developers <coredev@cacophony.org.nz>
+  description: Controls the ATtiny and other device on the Pi HAT
+  license: GPL v3.0
+  file_name_template: "{{ .ProjectName }}_{{ .Version }}_{{ .Arch }}"
+  formats:
+    - deb
+  bindir: /usr/bin
+
+checksum:
+  name_template: '{{ .ProjectName }}_{{ .Version }}_checksums.txt'
+
+dist: dist

.travis.yml

@@ -0,0 +1,20 @@
+language: go
+
+go:
+  - "1.22.x"
+
+script:
+  - go mod tidy
+  - git diff --exit-code || (echo "Please run 'go mod tidy' to clean up the 'go.mod' and 'go.sum' files. Your go version should match the one used with travis."; false)
+  - go vet ./...
+  - go test ./...
+  - curl -sL https://git.io/goreleaser | bash -s check
+
+# calls goreleaser
+deploy:
+- provider: script
+  skip_cleanup: true
+  script: curl -sL https://git.io/goreleaser | bash
+  on:
+    tags: true
+    go: "1.22.x"

cmd/eeprom-programmer/main.go

@@ -0,0 +1,115 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/TheCacophonyProject/tc2-hat-controller/eeprom"
+	"github.com/alexflint/go-arg"
+	"periph.io/x/conn/v3/i2c/i2creg"
+	"periph.io/x/host/v3"
+)
+
+func main() {
+	if err := runMain(); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func runMain() error {
+	args := procArgs()
+
+	parts := strings.Split(args.PCBVersion, ".")
+	if len(parts) != 3 {
+		return fmt.Errorf("invalid hardware version '%s'", args.PCBVersion)
+	}
+
+	major, err := strconv.ParseInt(parts[0], 10, 64)
+	if err != nil {
+		return err
+	}
+	minor, err := strconv.ParseInt(parts[1], 10, 64)
+	if err != nil {
+		return err
+	}
+	patch, err := strconv.ParseInt(parts[2], 10, 64)
+	if err != nil {
+		return err
+	}
+
+	eepromData := &eeprom.EepromData{
+		Version: 1,
+		Major:   byte(major),
+		Minor:   byte(minor),
+		Patch:   byte(patch),
+		ID:      eeprom.GenerateRandomID(),
+		Time:    time.Now().Truncate(time.Second),
+	}
+
+	data := eepromData.WriteData()
+
+	log.Println("Initializing host")
+	if _, err := host.Init(); err != nil {
+		return err
+	}
+
+	bus, err := i2creg.Open("")
+	if err != nil {
+		return err
+	}
+
+	log.Printf("Writing EEPROM data: %+v", eepromData)
+	pageLength := 16 // Can only read one page on the eeprom chip at a time
+	dataLength := len(data)
+	for i := 0; i < dataLength; i += pageLength {
+		writeLen := min(pageLength, dataLength-i)
+		pageWriteData := data[i : i+writeLen]
+		d := append([]byte{byte(i)}, pageWriteData...)
+		err = bus.Tx(eeprom.EEPROM_ADDRESS, d, nil)
+		if err != nil {
+			log.Println("Error writing EEPROM: ", err)
+			return err
+		}
+		time.Sleep(10 * time.Millisecond)
+	}
+
+	log.Println("EEPROM data written to.")
+	eepromDataLength := len(data)
+	readData := []byte{}
+	for i := 0; i < eepromDataLength; i += pageLength {
+		readLen := min(pageLength, eepromDataLength-i)
+		r := make([]byte, readLen)
+		err := bus.Tx(eeprom.EEPROM_ADDRESS, []byte{byte(i)}, r)
+		if err != nil {
+			return err
+		}
+		readData = append(readData, r...)
+		time.Sleep(10 * time.Millisecond)
+	}
+
+	if !bytes.Equal(data, readData) {
+		return fmt.Errorf("data read from eeprom doesn't match data written to")
+	}
+
+	return nil
+}
+
+var version = "<not set>"
+
+func (Args) Version() string {
+	return version
+}
+
+func procArgs() Args {
+	args := Args{}
+	arg.MustParse(&args)
+	return args
+}
+
+type Args struct {
+	PCBVersion string `arg:"required" help:"Write to a register."`
+}

go.mod

@@ -0,0 +1,15 @@
+module github.com/TheCacophonyProject/eeprom-programmer
+
+go 1.22.3
+
+require (
+	github.com/TheCacophonyProject/tc2-hat-controller v0.6.7
+	github.com/alexflint/go-arg v1.5.0
+	periph.io/x/conn/v3 v3.7.0
+	periph.io/x/host/v3 v3.8.2
+)
+
+require (
+	github.com/alexflint/go-scalar v1.2.0 // indirect
+	github.com/godbus/dbus v4.1.0+incompatible // indirect
+)

go.sum

@@ -0,0 +1,23 @@
+github.com/TheCacophonyProject/tc2-hat-controller v0.6.7 h1:QKvyekMUPTSgrrDrKSIisHAcrt/zZK86scb1lxIgLBQ=
+github.com/TheCacophonyProject/tc2-hat-controller v0.6.7/go.mod h1:lei4dqVdRWhBmUvG4v3lD8dxmqbmbidix/dsLiDRUnE=
+github.com/alexflint/go-arg v1.5.0 h1:rwMKGiaQuRbXfZNyRUvIfke63QvOBt1/QTshlGQHohM=
+github.com/alexflint/go-arg v1.5.0/go.mod h1:A7vTJzvjoaSTypg4biM5uYNTkJ27SkNTArtYXnlqVO8=
+github.com/alexflint/go-scalar v1.2.0 h1:WR7JPKkeNpnYIOfHRa7ivM21aWAdHD0gEWHCx+WQBRw=
+github.com/alexflint/go-scalar v1.2.0/go.mod h1:LoFvNMqS1CPrMVltza4LvnGKhaSpc3oyLEBUZVhhS2o=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/godbus/dbus v4.1.0+incompatible h1:WqqLRTsQic3apZUK9qC5sGNfXthmPXzUZ7nQPrNITa4=
+github.com/godbus/dbus v4.1.0+incompatible/go.mod h1:/YcGZj5zSblfDWMMoOzV4fas9FZnQYTkDnsGvmh2Grw=
+github.com/jonboulle/clockwork v0.3.0 h1:9BSCMi8C+0qdApAp4auwX0RkLGUjs956h0EkuQymUhg=
+github.com/jonboulle/clockwork v0.3.0/go.mod h1:Pkfl5aHPm1nk2H9h0bjmnJD/BcgbGXUBGnn1kMkgxc8=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+gopkg.in/yaml.v3 v3.0.0 h1:hjy8E9ON/egN1tAYqKb61G10WtihqetD4sz2H+8nIeA=
+gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+periph.io/x/conn/v3 v3.7.0 h1:f1EXLn4pkf7AEWwkol2gilCNZ0ElY+bxS4WE2PQXfrA=
+periph.io/x/conn/v3 v3.7.0/go.mod h1:ypY7UVxgDbP9PJGwFSVelRRagxyXYfttVh7hJZUHEhg=
+periph.io/x/host/v3 v3.8.2 h1:ayKUDzgUCN0g8+/xM9GTkWaOBhSLVcVHGTfjAOi8OsQ=
+periph.io/x/host/v3 v3.8.2/go.mod h1:yFL76AesNHR68PboofSWYaQTKmvPXsQH2Apvp/ls/K4=