From efc8e52655659a9b670e80aec936f061faacbb61 Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Wed, 13 Jan 2021 15:36:23 +0800
Subject: [PATCH] hacky modifications to support KL-P350W printer

---
 klg2.c | 51 ++++++++-------------------------------------------
 1 file changed, 8 insertions(+), 43 deletions(-)

diff --git a/klg2.c b/klg2.c
index 635b8d2..1f81d9d 100644
--- a/klg2.c
+++ b/klg2.c
@@ -27,7 +27,7 @@
 
 /* USB constants */
 const uint16_t KLG2_VID = 0x07CF;
-const uint16_t KLG2_PID = 0x4112;
+const uint16_t KLG2_PID = 0x4204;
 const uint8_t KLG2_IFACE = 0;
 const uint8_t KLG2_EPOUT = 0x01;
 const uint8_t KLG2_EPIN = 0x82;
@@ -95,7 +95,7 @@ enum OPERMODE_T  {
 libusb_device_handle *devhnd;
 
 /* Image buffer */
-#define IMAGE_ROWS 128
+#define IMAGE_ROWS 32
 unsigned image_w;
 uint8_t *image_stripes[IMAGE_ROWS];
 
@@ -191,7 +191,7 @@ int printer_check_status(void)
         return 1;
     }
     if (rsp[0] != PRINTER_STX || rsp[1] != 0x80 || rsp[2] != 0x02 ||
-            rsp[3] != 0x00 || rsp[4] != 0x00 || rsp[5] != 0xa6) {
+            rsp[3] != 0x00 || rsp[4] != 0x00 || rsp[5] != 0xc8) {
         fputs("Status response mismatch\n", stderr);
         return 1;
     }
@@ -274,45 +274,13 @@ int printer_cancel_job(void)
     return 0;
 }
 
-/*======================================================================
-  Pre-print config (no idea of what it does)
-*/
-int printer_prejob(void)
-{
-    static const uint8_t cfg1[] = {
-        PRINTER_STX, 0x02, 0x04, 0x00, 0x00, 0x09, 0x09, 0x01
-    };
-    send_to_printer(cfg1, 8, EPSIZE_16);
-
-    if (printer_recv_ack("Prejob failed\n")) {
-        return 1;
-    }
-
-    static const uint8_t cfg2[] = {
-        PRINTER_STX, 0x82
-    };
-    send_to_printer(cfg2, 2, EPSIZE_16);
-    uint8_t rsp[KLG2_EPSIZE];
-    int rc = recv_from_printer(rsp);
-    if (rc != 5) {
-        fprintf(stderr, "Unexpected response length (%d)\n", rc);
-        return 1;
-    }
-    if (rsp[0] != PRINTER_STX || rsp[1] != 0x80 || rsp[2] != 0x01 ||
-            rsp[3] != 0x00 || rsp[4] != 0x01) {
-        fputs("Response mismatch\n", stderr);
-        return 1;
-    }
-    return 0;
-}
-
 /*======================================================================
   Printer Speed Adjust
 */
 int printer_set_speed(void)
 {
     static const uint8_t psa[] = {
-        PRINTER_STX, 0x1C, 0x01, 0x00, 0x00
+        PRINTER_STX, 0x1C, 0x01, 0x00, 0x01
     };
     send_to_printer(psa, 5, EPSIZE_16);
     return printer_recv_ack("Speed adjust failed\n");
@@ -340,7 +308,7 @@ int printer_check_tape(enum TAPECODE_T tapeid)
 int printer_set_margin(enum MARGINCODE_T marginid)
 {
     static uint8_t afs[] = {
-        PRINTER_STX, 0x0d, 0x01, 0x00, 0x00
+        PRINTER_STX, 0x0d, 0x01, 0x00, 0x40
     };
     afs[4] = marginid;
     send_to_printer(afs, 5, EPSIZE_16);
@@ -353,11 +321,10 @@ int printer_set_margin(enum MARGINCODE_T marginid)
 int printer_set_density(enum DENSITYCODE_T densityid)
 {
     static uint8_t dms[] = {
-        PRINTER_STX, 0x09, 0x06, 0x00,
-        0x00, 0x00, 0x01, 0x00, 0x00, 0x00
+        PRINTER_STX, 0x09, 0x07, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00
     };
-    dms[8] = densityid;
-    send_to_printer(dms, 10, EPSIZE_16);
+    dms[8] = densityid; // ?
+    send_to_printer(dms, 11, EPSIZE_16);
     return printer_recv_ack("Print density select failed\n");
 }
 
@@ -718,8 +685,6 @@ int main(int argc, char **argv)
         if (rc)
             return 1;
 
-        if (!need_cancel)
-            need_cancel = printer_prejob();
         if (!need_cancel)
             need_cancel = printer_check_tape(opt_tape);
         if (!need_cancel)