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update printQR method

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This commit is contained in:
Siegfried Siegert
2026-06-08 08:47:43 +02:00
parent 60234edc88
commit 620efc3a49
1 changed files with 33 additions and 2 deletions
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src/hwapi.cpp
+33 -2
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@@ -1920,8 +1920,39 @@ void hwapi::prn_printBarcode(uint8_t kindOf, uint8_t withText, uint8_t offset,
void hwapi::prn_sendQRdata(QByteArray *buf) const
{
// maximal 150 alphanummeric bytes
buf->clear();
// buf must be 256byte long
// printer can use maximal 150 alphanummeric bytes
// but we send 256byte for reserve
//buf->clear();
QByteArray dataPart1, dataPart2, dataPart3, dataPart4;
int bufLength=buf->length();
int toFill=0;
// make sure that input buffer is long enough because program crashes when reading too much!
if (bufLength<256)
{
toFill=256-bufLength;
//toFill+=2; // just some byte more to be sure
buf->append(toFill, 0);
}
dataPart1.clear();
dataPart2.clear();
dataPart3.clear();
dataPart4.clear();
dataPart4=buf->right(64);
buf->chop(64);
dataPart3=buf->right(64);
buf->chop(64);
dataPart2=buf->right(64);
buf->chop(64);
dataPart1=buf->right(64);
longFDcmd_set(CMD2DC_STOR_QR_DATA, 0, 0, 64, &dataPart1);
longFDcmd_set(CMD2DC_STOR_QR_DATA, 0, 1, 64, &dataPart2);
longFDcmd_set(CMD2DC_STOR_QR_DATA, 0, 2, 64, &dataPart3);
longFDcmd_set(CMD2DC_STOR_QR_DATA, 0, 3, 64, &dataPart4);
}
void hwapi::prn_printQRcode(void) const