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Fix status decoding

Mainly to reflect a real-world printer.
master
Přemysl Janouch 9 months ago
parent
commit
43b5536c4d
Signed by: Přemysl Janouch <p@janouch.name> GPG Key ID: A0420B94F92B9493
3 changed files with 16 additions and 8 deletions
  1. +11
    -5
      brother-info/main.go
  2. +3
    -3
      label-exp/main.go
  3. +2
    -0
      ql/ql.go

+ 11
- 5
brother-info/main.go View File

@@ -62,15 +62,19 @@ func printStatusInformation(d []byte) {
switch b := d[11]; b {
case 0x00:
log.Println("media: no media")
case 0x4a:
case 0x4a, 0x0a: // 0x4a = J, in reality we get 0x0a as in QL-1100 docs
log.Println("media: continuous length tape")
case 0x4b:
case 0x4b, 0x0b: // 0x4b = K, in reality we get 0x0b as in QL-1100 docs
log.Println("media: die-cut labels")
default:
log.Println("media:", b)
}

// d[14] seems to be 0x14 in a real-world QL-800.
// In a real-world QL-800, d[14] seems to be:
// 0x01 with die-cut 29mm long labels,
// 0x14 with 29mm tape,
// 0x23 with red-black 62mm tape,
// and directly corresponds to physical pins on the tape.
if d[12] != 0x00 || d[13] != 0x00 || d[14] != 0x3f {
log.Println("unexpected status fixed bytes")
}
@@ -83,7 +87,7 @@ func printStatusInformation(d []byte) {
}

// Media length.
log.Println("media width:", d[17], "mm")
log.Println("media length:", d[17], "mm")

// Status type.
switch b := d[18]; b {
@@ -128,7 +132,9 @@ func printStatusInformation(d []byte) {
log.Println("notification number:", b)
}

// d[25] seems to be 0x01 in a real-world QL-800.
// In a real-world QL-800, d[25] seems to be:
// 0x01 with 29mm tape or die-cut 29mm long labels,
// 0x81 with red-black 62mm tape.
if d[23] != 0x00 || d[24] != 0x00 || d[25] != 0x00 || d[26] != 0x00 ||
d[27] != 0x00 || d[28] != 0x00 || d[29] != 0x00 || d[30] != 0x00 ||
d[31] != 0x00 {

+ 3
- 3
label-exp/main.go View File

@@ -109,9 +109,9 @@ func printStatusInformation(d []byte) {
switch b := d[11]; b {
case 0x00:
log.Println("media: no media")
case 0x4a:
case 0x4a, 0x0a: // 0x4a = J, in reality we get 0x0a as in QL-1100 docs
log.Println("media: continuous length tape")
case 0x4b:
case 0x4b, 0x0b: // 0x4b = K, in reality we get 0x0b as in QL-1100 docs
log.Println("media: die-cut labels")
default:
log.Println("media:", b)
@@ -121,7 +121,7 @@ func printStatusInformation(d []byte) {
log.Println("mode:", d[15])

// Media length.
log.Println("media width:", d[17], "mm")
log.Println("media length:", d[17], "mm")

// Status type.
switch b := d[18]; b {

+ 2
- 0
ql/ql.go View File

@@ -2,6 +2,8 @@
package ql

// Resources:
// http://etc.nkadesign.com/Printers/QL550LabelPrinterProtocol
// https://github.com/torvalds/linux/blob/master/drivers/usb/class/usblp.c
// http://www.undocprint.org/formats/page_description_languages/brother_p-touch

import (

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