Printing a bitmap on a TSC printer

Question

I try to print image on tsc tdp-225 printer using the android device via OTG.

This is example from documentation for printing simple bitmap image on tsc printer .

This is my implementation .

And this is what the printer has printed

Maybe someone has already encountered this problem. Printing a monochromatic bitmap using PUTBMP also does not work.

Виктор Викторов · Answer 1 · 2019-08-05T05:54:26.873

1

fun String.hexStringToByteArray(): ByteArray {
    val hexStr = this.replace("-", "")

    var result = ByteArray(hexStr.length / 2, {0})

    for(i in 0 until hexStr.length step 2) {
        val hex = hexStr.substring(i, i + 2)
        val byte: Byte = Integer.valueOf(hex, 16).toByte()
        Log.d(TAG, "hex: $hex; byte: $byte\n")
        result[ i / 2] = byte
    }

    return result
}

I should convert hex string to byte array. Anyway propblem with printing via PUTBMP command is still exists. Propblem with uploading bitmap to printer with command DOWNLOAD F.

UPDATE

If it is still relevant, I use the following implementation for printing bitmap image

fun bitmapCommand(byteArray: ByteArray) {
    _connectionManager.sendMessage("CLS\n\r".toByteArray())
    _connectionManager.sendMessage("BITMAP 0,0,${_labelWidthPxl / 8},$_labelHeightPxl,0,".toByteArray())
    _connectionManager.sendMessage(byteArray)
    _connectionManager.sendMessage("\n\r".toByteArray())
    _connectionManager.sendMessage("PRINT 1,1\n\r".toByteArray())
}

The first two commands are preparatory. Third command prints a bitmap pixel by pixel

edited Aug 05 '19 at 05:54

answered Jan 30 '18 at 07:35

Виктор Викторов

13
1
5

Hello. I decided to print serial bmp image via BITMAP command. For me PUTBMP is not suitable for printing several images – Виктор Викторов Oct 18 '18 at 00:48
How do you pass the byte array to `sendcommand` where you normally pass strings? – TheStoryCoder May 05 '19 at 18:17
@TheStoryCoder hello! I updated my answer if it is still relevant for you – Виктор Викторов Aug 05 '19 at 05:55
I know this is an old post but I am having the same issues. I have tried converting to byte array then converting that byte array to a string. use bitconverter. Nothing I try seems to work. Did you convert your images to monochrome. – Stanton Roux Feb 24 '21 at 07:05

Printing a bitmap on a TSC printer

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