116 lines
3.1 KiB
Go
116 lines
3.1 KiB
Go
package main
|
|
|
|
import (
|
|
"log"
|
|
"os"
|
|
"os/exec"
|
|
"strconv"
|
|
"time"
|
|
"tinygo.org/x/bluetooth"
|
|
)
|
|
|
|
var adapter = bluetooth.DefaultAdapter
|
|
var phomemoFolder = "/Downloads/phomemo"
|
|
|
|
func main() {
|
|
home, _ := os.UserHomeDir()
|
|
inDir := home + phomemoFolder
|
|
|
|
files, err := os.ReadDir(inDir)
|
|
must(phomemoFolder, err)
|
|
if len(files) == 0 {
|
|
log.Printf("No files to print found in %s. Quitting.\n", inDir)
|
|
os.Exit(0)
|
|
}
|
|
|
|
// Enable BLE interface.
|
|
must("enable BLE stack", adapter.Enable())
|
|
|
|
// Start scanning. Use this to figure out your device's UUID. Phomemo uses a non-random one.
|
|
println("scanning...")
|
|
var phomemoAddress bluetooth.ScanResult
|
|
err = adapter.Scan(func(adapter *bluetooth.Adapter, device bluetooth.ScanResult) {
|
|
if device.LocalName() == "Mr.in_M02" {
|
|
phomemoAddress = device
|
|
|
|
println("found device: ", device.Address.String(), device.RSSI, device.LocalName())
|
|
adapter.StopScan()
|
|
}
|
|
})
|
|
must("start scan", err)
|
|
|
|
tryToPrint(phomemoAddress, inDir, files)
|
|
}
|
|
|
|
func tryToPrint(phomemoAddress bluetooth.ScanResult, dir string, files []os.DirEntry) {
|
|
var phomemo *bluetooth.Device
|
|
phomemo, err := adapter.Connect(phomemoAddress.Address, bluetooth.ConnectionParams{})
|
|
must("failed to connect to adapter", err)
|
|
log.Println("connected to ", phomemoAddress.Address.String())
|
|
defer func() {
|
|
if err := phomemo.Disconnect(); err != nil {
|
|
log.Println(err)
|
|
} else {
|
|
log.Println("disconnected")
|
|
}
|
|
}()
|
|
|
|
srvcs, err := phomemo.DiscoverServices(nil)
|
|
must("failed to discover service", err)
|
|
log.Println("Discovering all services on device...")
|
|
|
|
srvc := srvcs[0] // there's only one (0000ff00-...) anyway
|
|
log.Println("- service", srvc.UUID().String())
|
|
|
|
chars, err := srvc.DiscoverCharacteristics(nil)
|
|
must("failed to discover characteristics of service", err)
|
|
|
|
// 3 characteristics to discover 0000ff01, 0000ff02, and 0000ff03
|
|
for _, file := range files {
|
|
filePath := dir + "/" + file.Name()
|
|
writeData(filePath, chars[1]) // 0000ff02-...
|
|
readResult(chars[0]) // 0000ff01-...
|
|
os.RemoveAll(filePath)
|
|
}
|
|
|
|
log.Println("-- DONE")
|
|
}
|
|
|
|
func writeData(path string, char bluetooth.DeviceCharacteristic) {
|
|
// first, it needs to be prepared for the printer
|
|
pathpho := path + ".pho"
|
|
argstr := []string{"-c", "python phomemo-filter.py " + path + " > " + pathpho}
|
|
_, err := exec.Command("/bin/zsh", argstr...).Output()
|
|
must("something went wrong while filtering phomemo data py", err)
|
|
|
|
data, _ := os.ReadFile(pathpho)
|
|
|
|
log.Printf("-- writing file %s to characteristic %s\n", path, char.UUID().String())
|
|
_, err = char.WriteWithoutResponse(data)
|
|
if err != nil {
|
|
log.Println(" ", err.Error())
|
|
}
|
|
time.Sleep(1 * time.Second)
|
|
os.RemoveAll(pathpho)
|
|
}
|
|
|
|
func readResult(char bluetooth.DeviceCharacteristic) {
|
|
log.Println("-- reading from to characteristic", char.UUID().String())
|
|
|
|
buf := make([]byte, 28)
|
|
n, err := char.Read(buf)
|
|
if err != nil {
|
|
log.Println(" ", err.Error())
|
|
} else {
|
|
log.Println(" data bytes", strconv.Itoa(n))
|
|
log.Println(" value =", buf[:n])
|
|
}
|
|
time.Sleep(1 * time.Second)
|
|
}
|
|
|
|
func must(action string, err error) {
|
|
if err != nil {
|
|
panic("failed to " + action + ": " + err.Error())
|
|
}
|
|
}
|