kodak8800: Major improvements! Can now print successfully!

* Job query, canceling
 * Printer status for idle/completion detection
 * Many fixes
 * Head temperature

Todo:

 * Report printer status in human readable
 * Better job queries
 * Decode sensor data & report (know how to report temperature)
 * 8x12 media handling/reporting
master
Solomon Peachy 2 years ago
parent 20c43a4396
commit 711d544561
  1. 1
      README
  2. 348
      backend_kodak8800.c
  3. BIN
      testjobs/kodak_8800_8x10.raw

@ -609,6 +609,7 @@
-i Query printer info
-m Query media info
-n Query counters
-X id Cancel job (0 for all/current)
***************************************************************************
BACKEND=shinkos2145

@ -37,16 +37,49 @@ struct rtp1_req {
uint8_t payload[];
};
struct rtp1_sts {
uint8_t base[2]; // x10 x10 or x10 x12 ? (10 == ok, 12 == error?)
uint16_t err; /* RTP_ERROR_* */
uint8_t sts[4]; // [0] STATE_* [2] PRINT_*
};
struct rtp1_resp {
uint8_t hdr[4]; /* "RTP1" */
uint8_t cmd[4];
uint8_t sts1[2];
uint8_t sts2[3];
uint8_t zero[3];
struct rtp1_sts sts;
uint32_t payload_len; /* BE */
uint8_t payload[];
};
#define STS_OK 0x10
#define STS_ERR 0x12
#define STS_ERR2 0x13 // Not sure what's different
#define STATE_IDLE 0x00
#define STATE_UNK 0x01 // XXX
#define STATE_PRINT 0x02
#define PRINT_IDLE 0x00
#define PRINT_FEED 0x01
#define PRINT_Y 0x02
#define PRINT_M 0x03
#define PRINT_C 0x04
#define PRINT_O 0x05
#define PRINT_EJECT 0x06
#define RTP_ERROR_UKNOWN_0105 0x0105 // seen after issuing START command
#define RTP_ERROR_JOB_NOT_OPEN 0x0203
#define RTP_ERROR_COMMAND_DISABLED 0x0307
#define RTP_ERROR_RIBBON_TOO_SHORT 0x0420
#define RTP_ERROR_OPERATING_SYS 0x0503
#define RTP_ERROR_DOOR_OPEN 0x0504
#define RTP_ERROR_RIBBON_CHECK 0x2001
#define RTP_ERROR_PAPER_CHECK 0x2004
#define RTP_ERROR_ENGINE_PROTOCOL 0x4302
#define RTP_ERROR_BARCODE_SENSE 0x430A
#define RTP_ERROR_HOST_READ 0xFF02
#define RTP_ERROR_UNKNOWN_FF04 0xFF04 // seen when issuing CANCELJOB
struct rtp1_counters {
uint32_t cutter_count;
uint32_t prints_finished;
@ -64,17 +97,6 @@ struct rtp1_errorrecord {
uint32_t papernum;
};
#define RTP_ERROR_JOB_NOT_OPEN 0x0203
#define RTP_ERROR_COMMAND_DISABLED 0x0307
#define RTP_ERROR_RIBBON_TOO_SHORT 0x0420
#define RTP_ERROR_OPERATING_SYS 0x0503
#define RTP_ERROR_DOOR_OPEN 0x0504
#define RTP_ERROR_RIBBON_CHECK 0x2001
#define RTP_ERROR_PAPER_CHECK 0x2004
#define RTP_ERROR_ENGINE_PROTOCOL 0x4302
#define RTP_ERROR_BARCODE_SENSE 0x430A
#define RTP_ERROR_HOST_READ 0xFF02
struct rtp1_errorlog {
struct rtp1_errorrecord row[32];
};
@ -119,32 +141,36 @@ struct rtp1_fwvers {
uint8_t reset[12];
};
struct rtp1_sensors {
uint8_t unk[6];
// -> 02 00 06 2a ff 00
// -> 02 00 06 2a ff 00
// -> 10 00 02 2a ff 00
uint8_t head_temp;
uint8_t head_temp_target;
};
const uint8_t rtp_sendimagedata[4] = { 0x00, 0x00, 0x00, 0x00 }; /* Resp len 0 */
const uint8_t rtp_getmaxxfer[4] = { 0x01, 0x00, 0x00, 0x00 }; /* Resp len 4 (u32) */
const uint8_t rtp_printfooter[4] = { 0x11, 0x00, 0x00, 0x00 }; /* Resp len 0 */
const uint8_t rtp_getserial[4] = { 0x81, 0x01, 0x00, 0x00 }; /* Resp len 64 (rtp1_serial) */
const uint8_t rtp_getserialhead[4] = { 0x81, 0x01, 0x01, 0x00 }; /* Resp len 64 (rtp1_serial) */
const uint8_t rtp_getmfgmodel[4] = { 0x13, 0x00, 0x00, 0x00 }; /* Resp len 256 (rtp1_mfgmodel) */
const uint8_t rtp_getcounters[4] = { 0x81, 0x04, 0x00, 0x00 }; /* Resp len 20 (rtp1_counters) */
const uint8_t rtp_getstatus[4] = { 0x06, 0x00, 0x00, 0x00 }; /* Resp len 0 */
const uint8_t rtp_getjobstatus[4] = { 0x06, 0x03, 0x00, 0x00 }; /* Req len 4, resp 14 XXX */
const uint8_t rtp_getjobqstatus[4] = { 0x06, 0x05, 0x00, 0x00 }; /* Req len 4, resp 14 XXX */
const uint8_t rtp_getmedia[4] = { 0x06, 0x40, 0x00, 0x00 }; /* Resp len 16 (rtp1_mediastatus) */
const uint8_t rtp_getsensors[4] = { 0x06, 0x80, 0x00, 0x00 }; /* Resp len 8 (rtp1_sensors */
const uint8_t rtp_getusererrors[4] = { 0x0c, 0x01, 0x00, 0x00 }; /* Resp len 512 (rtp1_errorlog) */
const uint8_t rtp_getserverrors[4] = { 0x0c, 0x02, 0x00, 0x00 }; /* Resp len 512 (rtp1_errorlog) */
const uint8_t rtp_getifaceerrors[4] = { 0x0c, 0x03, 0x00, 0x00 }; /* Resp len 512 (rtp1_errorlog) */
const uint8_t rtp_openjob[4] = { 0x10, 0x00, 0x00, 0x00 }; /* Resp len 4 (u32) */
const uint8_t rtp_closejob[4] = { 0x11, 0x00, 0x00, 0x00 }; /* Resp len 0 */
const uint8_t rtp_canceljob[4] = { 0x12, 0x00, 0x00, 0x00 }; /* Resp len 0 */
const uint8_t rtp_canceljobid[4] = { 0x12, 0x01, 0x00, 0x00 }; /* Req len 4, Resp len 0 */
const uint8_t rtp_getmfgmodel[4] = { 0x13, 0x00, 0x00, 0x00 }; /* Resp len 256 (rtp1_mfgmodel) */
const uint8_t rtp_getfwversions[4] = { 0x13, 0x80, 0x00, 0x00 }; /* Resp len 60 (rtp1_fwvers) */
const uint8_t rtp_getserial[4] = { 0x81, 0x01, 0x00, 0x00 }; /* Resp len 64 (rtp1_serial) */
const uint8_t rtp_getserialhead[4] = { 0x81, 0x01, 0x01, 0x00 }; /* Resp len 64 (rtp1_serial) */
const uint8_t rtp_getcounters[4] = { 0x81, 0x04, 0x00, 0x00 }; /* Resp len 20 (rtp1_counters) */
/* Unknowns */
const uint8_t rtp_unknown1[4] = { 0x06, 0x00, 0x00, 0x00 }; /* Resp len 0 */
// Read Status?
const uint8_t rtp_unknown2[4] = { 0x06, 0x80, 0x00, 0x00 }; /* Resp len 8 */
// -> 02 00 06 2a ff 00 1d 27
// -> 02 00 06 2a ff 00 1e 27
// -> 10 00 02 2a ff 00 26 27
const uint8_t rtp_unknown3[4] = { 0x10, 0x00, 0x00, 0x00 }; /* Resp len 4 */
// -> 00 00 00 01 Seen prior to sending data to printer. status/ready?
// ReadCapabilities?
const uint8_t rtp_unknown4[4] = { 0x06, 0x03, 0x00, 0x00 }; /* Req len 4, resp 14?? */
// *** XXX head temp (&target), ribbon type, paper type, cut & page alignment, media total
// *** XXX cut & page alignment, media total?
// plus state of cutter, cover, ribbon panel position, etc..
struct rosetta_header {
@ -184,7 +210,7 @@ struct kodak8800_ctx {
/* Helper Functions */
static int rtp1_docmd(struct kodak8800_ctx *ctx, const uint8_t *cmd,
const uint8_t *payload, uint32_t payload_len,
uint32_t maxresp_len, uint8_t *respbuf)
uint32_t maxresp_len, uint8_t *respbuf, struct rtp1_sts *sts)
{
int ret;
int num;
@ -220,11 +246,22 @@ static int rtp1_docmd(struct kodak8800_ctx *ctx, const uint8_t *cmd,
goto done;
}
// XXX check response header! pass up to higher level?
/* Copy over the error code */
if (sts) {
memcpy(sts, &resp.sts, sizeof(resp.sts));
sts->err = be16_to_cpu(sts->err);
}
/* Read response payload, if anything */
/* Read response payload, if any */
resp.payload_len = be32_to_cpu(resp.payload_len);
if (resp.payload_len > maxresp_len || (maxresp_len && !respbuf)) {
if (!maxresp_len || !respbuf) {
if (resp.payload_len)
ERROR("No buffer supplied but printer sending %d bytes\n", (int)resp.payload_len);
goto done;
}
if (resp.payload_len > maxresp_len) {
ERROR("Oversize response (%d/%d)\n", resp.payload_len, maxresp_len);
return CUPS_BACKEND_FAILED;
}
@ -244,7 +281,7 @@ static int rtp1_getmaxxfer(struct kodak8800_ctx *ctx, uint32_t *maxlen)
{
int ret;
ret = rtp1_docmd(ctx, rtp_getmaxxfer, NULL, 0, 4, (uint8_t*)maxlen);
ret = rtp1_docmd(ctx, rtp_getmaxxfer, NULL, 0, 4, (uint8_t*)maxlen, NULL);
*maxlen = be32_to_cpu(*maxlen);
@ -259,15 +296,15 @@ static int kodak8800_getinfo(struct kodak8800_ctx *ctx)
struct rtp1_fwvers fwvers;
ret = rtp1_docmd(ctx, rtp_getmfgmodel, NULL, 0,
sizeof(mfgmdl), (uint8_t*) &mfgmdl);
sizeof(mfgmdl), (uint8_t*) &mfgmdl, NULL);
if (ret)
return ret;
ret = rtp1_docmd(ctx, rtp_getserialhead, NULL, 0,
sizeof(headsn), (uint8_t*) &headsn);
sizeof(headsn), (uint8_t*) &headsn, NULL);
if (ret)
return ret;
ret = rtp1_docmd(ctx, rtp_getfwversions, NULL, 0,
sizeof(fwvers), (uint8_t*) &fwvers);
sizeof(fwvers), (uint8_t*) &fwvers, NULL);
if (ret)
return ret;
@ -293,7 +330,7 @@ static int kodak8800_getmedia(struct kodak8800_ctx *ctx)
struct rtp1_mediastatus media;
ret = rtp1_docmd(ctx, rtp_getmedia, NULL, 0,
sizeof(media), (uint8_t*) &media);
sizeof(media), (uint8_t*) &media, NULL);
if (ret)
return ret;
@ -306,6 +343,7 @@ static int kodak8800_getmedia(struct kodak8800_ctx *ctx)
INFO("Paper Type: %s (%d)\n", media.paper_type == PAPER_TYPE_7 ? "8\"" : "Unknown", media.paper_type); //XXX
INFO("Remaining Paper: %d feet\n", media.paper_remain / 12);
INFO("Remaining Ribbon: %d feet\n", media.ribbon_remain / 12);
INFO("Remaining Prints: %d\n", media.ribbon_remain / 12 / 4);
return CUPS_BACKEND_OK;
}
@ -316,7 +354,7 @@ static int kodak8800_getcounters(struct kodak8800_ctx *ctx)
struct rtp1_counters counters;
ret = rtp1_docmd(ctx, rtp_getcounters, NULL, 0,
sizeof(counters), (uint8_t*) &counters);
sizeof(counters), (uint8_t*) &counters, NULL);
if (ret)
return ret;
@ -334,11 +372,32 @@ static int kodak8800_getcounters(struct kodak8800_ctx *ctx)
return CUPS_BACKEND_OK;
}
static int kodak8800_canceljob(struct kodak8800_ctx *ctx, int id)
{
int ret;
uint8_t jobcmd[4];
uint32_t jobid;
memcpy(jobcmd, rtp_canceljob, sizeof(jobcmd));
if (id > 0) {
jobid = id;
jobid = cpu_to_be32(jobid);
jobcmd[1] = 1; // XXX this might need to be the jobid
ret = rtp1_docmd(ctx, jobcmd, (uint8_t*)&jobid, sizeof(jobid), 0, NULL, NULL);
} else {
ret = rtp1_docmd(ctx, jobcmd, NULL, 0, 0, NULL, NULL);
}
return ret;
}
static void kodak8800_cmdline(void)
{
DEBUG("\t\t[ -i ] # Query printer info\n");
DEBUG("\t\t[ -m ] # Query media info\n");
DEBUG("\t\t[ -n ] # Query counters\n");
DEBUG("\t\t[ -X id ] # Cancel job (0 for all)\n");
}
static int kodak8800_cmdline_arg(void *vctx, int argc, char **argv)
@ -349,7 +408,7 @@ static int kodak8800_cmdline_arg(void *vctx, int argc, char **argv)
if (!ctx)
return -1;
while ((i = getopt(argc, argv, GETOPT_LIST_GLOBAL "imn")) >= 0) {
while ((i = getopt(argc, argv, GETOPT_LIST_GLOBAL "imnX:")) >= 0) {
switch(i) {
GETOPT_PROCESS_GLOBAL
case 'i':
@ -361,6 +420,10 @@ static int kodak8800_cmdline_arg(void *vctx, int argc, char **argv)
case 'n':
j = kodak8800_getcounters(ctx);
break;
case 'X':
j = kodak8800_canceljob(ctx, atoi(optarg));
break;
default:
break; /* Ignore completely */
}
@ -402,7 +465,7 @@ static int kodak8800_attach(void *vctx, struct dyesub_connection *conn, uint8_t
ret = kodak8800_query_mfgmodel(ctx);
if (ret)
return CUPS_BACKEND_FAILED;
ret = rtp1_docmd(ctx, rtp_getmedia, NULL, 0, sizeof(media), (uint8_t*)&media);
ret = rtp1_docmd(ctx, rtp_getmedia, NULL, 0, sizeof(media), (uint8_t*)&media, NULL);
if (ret)
return CUPS_BACKEND_FAILED;
@ -559,6 +622,7 @@ static int kodak8800_main_loop(void *vctx, const void *vjob) {
struct kodak8800_ctx *ctx = vctx;
int ret;
struct rtp1_sts sts;
const struct kodak8800_printjob *job = vjob;
@ -567,15 +631,37 @@ static int kodak8800_main_loop(void *vctx, const void *vjob) {
if (!job)
return CUPS_BACKEND_FAILED;
// query printer for shit
INFO("Waiting for printer idle\n");
// update marker levels?
// RTP1 status etc?
/* Query status */
do {
ret = rtp1_docmd(ctx, rtp_getstatus, NULL, 0, 0, NULL, &sts);
if (ret)
return ret;
if (sts.err) {
ERROR("Printer reports error: %04x\n", sts.err);
return CUPS_BACKEND_FAILED; // XXX make it more subtle!
}
if (sts.sts[0] == STATE_IDLE) {
break;
}
sleep(1);
} while (1);
INFO("Sending image data\n");
uint32_t jobid;
ret = rtp1_docmd(ctx, rtp_openjob, NULL, 0, 4, (uint8_t*)&jobid, &sts);
if (ret)
return ret;
jobid = be32_to_cpu(jobid);
if (sts.err) {
ERROR("Printer reports error: %04x\n", sts.err);
return CUPS_BACKEND_FAILED;
}
INFO("Printer assigned Job ID: %d\n", (int) jobid);
/* Sent over data blocks */
uint32_t offset = 0;
while (offset < job->jobsize) {
@ -584,23 +670,48 @@ static int kodak8800_main_loop(void *vctx, const void *vjob) {
if (ret)
return ret;
if (job->jobsize - offset < max_blocksize)
max_blocksize = job->jobsize - offset;
ret = rtp1_docmd(ctx, rtp_sendimagedata,
job->databuf + offset, max_blocksize,
0, NULL);
0, NULL, &sts);
if (ret)
return ret;
if (sts.err) {
ERROR("Printer reports error: %04x\n", sts.err);
return CUPS_BACKEND_FAILED;
}
offset += max_blocksize;
}
/* Send payload footer */
ret = rtp1_docmd(ctx, rtp_printfooter,
NULL, 0, 0, NULL);
ret = rtp1_docmd(ctx, rtp_closejob,
NULL, 0, 0, NULL, &sts);
if (ret)
return ret;
INFO("Waiting for printer to acknowledge completion\n");
// RTP1 status etc?
do {
sleep(1);
// update marker levels?
ret = rtp1_docmd(ctx, rtp_getstatus, NULL, 0, 0, NULL, &sts);
if (ret)
return ret;
if (sts.err) {
ERROR("Printer reports error: %04x\n", sts.err);
return CUPS_BACKEND_FAILED;
}
if (sts.sts[0] == STATE_IDLE) {
break;
}
if (fast_return) {
INFO("Fast return mode enabled.\n");
break;
}
sleep(1);
} while (1);
INFO("Print complete\n");
@ -616,7 +727,7 @@ static int kodak8800_query_serno(struct dyesub_connection *conn, char *respbuf,
.conn = conn,
};
ret = rtp1_docmd(&ctx, rtp_getserial, NULL, 0, sizeof(buf), buf);
ret = rtp1_docmd(&ctx, rtp_getserial, NULL, 0, sizeof(buf), buf, NULL);
if (!ret)
memcpy(respbuf, buf, buf_len);
@ -629,7 +740,7 @@ static int kodak8800_query_mfgmodel(struct kodak8800_ctx *ctx)
uint8_t buf[256];
int ret;
ret = rtp1_docmd(ctx, rtp_getmfgmodel, NULL, 0, sizeof(buf), buf);
ret = rtp1_docmd(ctx, rtp_getmfgmodel, NULL, 0, sizeof(buf), buf, NULL);
if (!ret) {
memcpy(ctx->serial, buf + 64*2, sizeof(ctx->serial));
@ -644,7 +755,7 @@ static int kodak8800_query_markers(void *vctx, struct marker **markers, int *cou
struct rtp1_mediastatus media;
int ret;
ret = rtp1_docmd(ctx, rtp_getmedia, NULL, 0, sizeof(media), (uint8_t*)&media);
ret = rtp1_docmd(ctx, rtp_getmedia, NULL, 0, sizeof(media), (uint8_t*)&media, NULL);
if (ret)
return CUPS_BACKEND_FAILED;
@ -668,6 +779,8 @@ static int kodak8800_query_stats(void *vctx, struct printerstats *stats)
{
struct kodak8800_ctx *ctx= vctx;
struct rtp1_counters counters;
struct rtp1_sts sts;
int ret;
stats->mfg = "Kodak";
@ -685,14 +798,25 @@ static int kodak8800_query_stats(void *vctx, struct printerstats *stats)
stats->levelmax[0] = ctx->marker.levelmax;
stats->levelnow[0] = ctx->marker.levelnow;
stats->name[0] = "Roll";
stats->status[0] = strdup("Unknown"); // XXX
ret = rtp1_docmd(ctx, rtp_getcounters, NULL, 0, sizeof(counters), (uint8_t*) &counters);
ret = rtp1_docmd(ctx, rtp_getcounters, NULL, 0, sizeof(counters), (uint8_t*) &counters, &sts);
if (ret)
return ret;
stats->cnt_life[0] = be32_to_cpu(counters.prints_finished);
const char *status;
if (sts.err)
status = "Error";
else if (sts.sts[0] == STATE_IDLE)
status = "Idle";
else if (sts.sts[0] == STATE_PRINT)
status = "Printing";
else
status = "Unknown";
stats->status[0] = strdup(status); // XXX
return CUPS_BACKEND_OK;
}
@ -705,7 +829,7 @@ static const char *kodak8800_prefixes[] = {
/* Exported */
const struct dyesub_backend kodak8800_backend = {
.name = "Kodak 8800/9810",
.version = "0.02WIP",
.version = "0.05",
.uri_prefixes = kodak8800_prefixes,
.cmdline_usage = kodak8800_cmdline,
.cmdline_arg = kodak8800_cmdline_arg,
@ -883,107 +1007,21 @@ const struct dyesub_backend kodak8800_backend = {
> 52 54 50 31 xx xx xx xx yy yy yy yy l1 l1 l1 l1
>> [ l1l1l1l1 bytes of payload ]
< 52 54 40 31 xx xx xx xx ss ss s2 s2 s2 00 00 00 l2 l2 l2 l2
< 52 54 40 31 xx xx xx xx ss ss EE EE s2 00 00 00 l2 l2 l2 l2
<< [ l2l2l2l2 bytes of payload ]
xx xx xx xx == command
yy yy yy yy == response buffer length (ie l2l2l2l2 must be <= yyyyyyyy)
ss ss == status message (10 10 is ok, 10 12 ok, dunno about errors)
s2 s2 s2 == secondary status (seen 00 00 00, 00 00 02, 05 04 02)
Specific commands seen when printing:
52 54 50 31 [....] "RTP1"
media status:
> 06 40 00 00 00 10 00 00 00 00 00 00
< 06 40 00 00 10 10 00 00 00 00 00 00 00 00 00 10
<< 00 01 00 02 00 01 00 01 00 00 04 a4 00 00 01 20
max xfer len:
> 01 00 00 00 00 00 00 04 00 00 00 00
< 01 00 00 00 10 10 00 00 02 00 00 00 00 00 00 04
<< 00 18 00 00
media status:
> 06 40 00 00 00 10 00 00 00 00 00 00
< 06 40 00 00 10 10 00 00 00 00 00 00 00 00 00 10
<< 00 01 00 02 00 01 00 01 00 00 04 a4 00 00 01 20
some sort of status?
> 10 00 00 00 00 00 00 04 00 00 00 00
< 10 00 00 00 10 10 00 00 00 00 00 00 00 00 00 04
<< 00 00 00 01
[ Each data block gets this sequence ]
> 01 00 00 00 00 00 00 04 00 00 00 00
< 01 00 00 00 10 10 00 00 02 00 00 00 00 00 00 04
<< 00 18 00 00 <-- Max available xfer buffer size!
> 00 00 00 00 00 00 00 00 ll ll ll ll
>> [ llllllll bytes of data, in 4K transfers, up to max size]
< 00 00 00 00 10 10 00 00 02 00 00 00 00 00 00 00
[ after final block ]
> 01 00 00 00 00 00 00 04 00 00 00 00
< 01 00 00 00 10 10 00 00 02 00 00 00 00 00 00 04
<< 00 00 00 00 <-- finished?
[ footer ]
> 11 00 00 00 00 00 00 00 00 00 00 00
< 11 00 00 00 10 10 00 00 02 00 00 00 00 00 00 00
**** COMMANDS:
Query Printer Serial Number (Matches what's in IEEE1284) =~ 98C070902445
> 81 01 00 00 00 00 ff ff 00 00 00 00
< 81 01 00 00 10 12 05 04 01 00 00 00 00 00 00 40
<< 39 38 43 30 37 30 39 30 32 34 34 35 00 00 00 00
<< 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<< 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<< 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Serial number is ASCII, null-terminated, 64 byte payload
Query Head Serial Number (??) =~ 6J3867
> 81 01 01 00 00 00 ff ff 00 00 00 00
< 81 01 01 00 10 12 05 04 01 00 00 00 00 00 00 40
<< 39 38 43 30 37 30 39 30 32 34 34 35 00 00 00 00
<< 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<< 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<< 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Serial number is ASCII, null-terminated, 64 byte payload
Query Mfg, Model, Serial & Firmware info (??)
> 13 00 00 00 00 00 01 00 00 00 00 00
< 13 00 00 00 10 12 05 04 01 00 00 00 00 00 01 00
<< 45 61 73 74 6d 61 6e 20 4b 6f 64 61 6b 20 43 6f
<< 6d 70 61 63 79 00 20 20 20 20 20 20 20 20 20 20
<< 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
<< 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
[ followed by three more 64 byte sections ]
Each section is ASCII, null-terminated/padded, 64 byte payload
4 sections: Manufacturer, Model, Serial, FW Version
ss ss == status message (10 10 is ok, 10 12 error)
EE EE == error code
s2 == secondary status (seen 00, 01, 02)
Query FW sub-versions
> 13 80 00 00 00 00 00 3c 00 00 00 00
< 13 80 00 00 10 12 05 04 01 00 00 00 00 00 00 3c
<< 39 38 43 30 37 30 39 30 32 34 34 35 00 00 00 00
<< 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<< 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<< 00 00 00 00 00 00 00 00 00 00 00 00 00
**************** TODO
Five blocks of 12 bytes, not always null-terminated!
DSP, ??, System, Head, Reset
* Sensor reporting (and queries)
* Job status / Job queue status
* Print status & errors
* 8x12 media crap
*/

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