dnp_ds40: Add status query.

backend_dnpds40.c

@@ -112,6 +112,46 @@ static char *dnpds40_media_types(char *str)
 	return "Unknown type";
 }
 
+static char *dnpds40_statuses(char *str)
+{
+	char tmp[6];
+	int i;
+	memcpy(tmp, str, 5);
+	tmp[5] = 0;
+
+	i = atoi(tmp);
+	
+	switch (i) {
+	case 0:	return "Idle";
+	case 1:	return "Printing";
+	case 500: return "Cooling Print Head";
+	case 510: return "Cooling Paper Motor";
+	case 1000: return "Cover Open";
+	case 1010: return "No Scrap Box";
+	case 1100: return "Paper End";
+	case 1200: return "Ribbon End";
+	case 1300: return "Paper jam";
+	case 1400: return "Ribbon error";
+	case 1500: return "Paper Definition Error";
+	case 1600: return "Data Error";
+	case 2000: return "Head Voltage Error";
+	case 2100: return "Head Position Error";
+	case 2200: return "Power Supply Fan Error";
+	case 2300: return "Cutter Error";
+	case 2400: return "Pinch Roller Error";
+	case 2500: return "Abnormal Head Temperature";
+	case 2600: return "Abnormal Media Temperature";
+	case 2610: return "Abnormal Paper Motor Temperature";
+	case 2700: return "Ribbon Tension Error";
+	case 2800: return "RF-ID Module Error";
+	case 3000: return "System Error";
+	default:
+		break;
+	}
+
+	return "Unkown type";
+}
+
 static void *dnpds40_init(void)
 {
 	struct dnpds40_ctx *ctx = malloc(sizeof(struct dnpds40_ctx));
@@ -362,6 +402,47 @@ static int dnpds40_get_info(struct dnpds40_ctx *ctx)
 	return 0;
 }
 
+static int dnpds40_get_status(struct dnpds40_ctx *ctx)
+{
+	struct dnpds40_cmd cmd;
+	uint8_t rdbuf[READBACK_LEN];
+	char tmp[9];
+
+	int ret, i, num = 0;
+	
+	/* Get Firmware Version */
+	dnpds40_build_cmd(&cmd, "STATUS", "", 0);
+
+	if ((ret = send_data(ctx->dev, ctx->endp_down,
+			     (uint8_t*)&cmd, sizeof(cmd))))
+		return ret;
+
+	/* Read in the response */
+	memset(rdbuf, 0, sizeof(rdbuf));
+	ret = libusb_bulk_transfer(ctx->dev, ctx->endp_up,
+				   rdbuf,
+				   READBACK_LEN,
+				   &num,
+				   5000);
+
+	if (ret < 0 || num < 8) {
+		ERROR("Failure to receive data from printer (libusb error %d: (%d/%d from 0x%02x))\n", ret, num, (int)sizeof(rdbuf), ctx->endp_up);
+		if (ret < 0)
+			return ret;
+		return 4;
+	}
+
+	memcpy(tmp, rdbuf, 8);
+	tmp[8] = 0;
+	i = atoi(tmp);  /* Length of payload in bytes, possibly padded */
+
+	dnpds40_cleanup_string((char*)rdbuf + 8, i);
+
+	INFO("Printer Status: %s => %s\n", (char*)rdbuf + 8, dnpds40_statuses((char*)rdbuf+8));
+
+	return 0;
+}
+
 static void dnpds40_cmdline(char *caller)
 {
 	DEBUG("\t\t%s [ -qs | -qi ]\n", caller);
@@ -377,10 +458,8 @@ static int dnpds40_cmdline_arg(void *vctx, int run, char *arg1, char *arg2)
 		return (!strcmp("-qs", arg1) ||
 			!strcmp("-qi", arg1));
 
-#if 0
 	if (!strcmp("-qs", arg1))
 		return dnpds40_get_status(ctx);
-#endif
 	if (!strcmp("-qi", arg1))
 		return dnpds40_get_info(ctx);
 
@@ -390,7 +469,7 @@ static int dnpds40_cmdline_arg(void *vctx, int run, char *arg1, char *arg2)
 /* Exported */
 struct dyesub_backend dnpds40_backend = {
 	.name = "DNP DS40/DS80",
-	.version = "0.01",
+	.version = "0.02",
 	.uri_prefix = "dnpds40",
 	.cmdline_usage = dnpds40_cmdline,
 	.cmdline_arg = dnpds40_cmdline_arg,