From 7362837e7c4f6160880089775359d308e6134130 Mon Sep 17 00:00:00 2001
From: Naoya Takamura <ntaka206@users.sourceforge.jp>
Date: Sat, 17 Dec 2011 13:22:00 +0900
Subject: [PATCH] Initial commit

---
 .gitignore   |   4 ++
 Makefile     |  13 ++++++
 decode_sci.c | 141 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 158 insertions(+)
 create mode 100755 .gitignore
 create mode 100644 Makefile
 create mode 100644 decode_sci.c

diff --git a/.gitignore b/.gitignore
new file mode 100755
index 0000000..082122d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+*.o
+*~
+decode_sci
+
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..31dc726
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,13 @@
+EXEC = decode_sci
+OBJS = decode_sci.o
+
+all: $(EXEC)
+
+$(EXEC): $(OBJS)
+	$(CC) $(LDFLAGS) -o $@ $(OBJS)  $(LDLIBS)
+
+clean:
+	-rm -f $(EXEC) *.elf *.gdb *.o *~
+
+%.o: %.c
+	$(CC) -c $(CFLAGS) -o $@ $<
diff --git a/decode_sci.c b/decode_sci.c
new file mode 100644
index 0000000..4b191a3
--- /dev/null
+++ b/decode_sci.c
@@ -0,0 +1,141 @@
+/*
+	decode_sci.c
+	sciLogger high sample data decoder
+
+	入力ファイル　Little Endian
+	このプログラムが動作するマシンもLittle Endianである必要あり。
+
+  Copyright Naoya Takamura@NT systemd design, 2011
+ 
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+ 
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+ 
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+
+#define	VER	"1.0"
+#define	AD_CH	6
+#define	AD_SAMPLE	50
+#define	AD_BYTES	3
+
+struct _recdata_head_t {
+    uint16_t	year;	// UTC
+    uint8_t		month;
+    uint8_t		day;
+    uint8_t		hour;
+    uint8_t		min;
+    uint8_t		sec;
+    uint32_t	tacc;	// ns
+    uint8_t		valid;
+    uint16_t	freq;	// 記録周波数 Hz
+} __attribute__((__packed__));
+
+
+typedef struct _recdata_head_t	recdata_head;
+
+#define	REC_DATALEN_HEAD	sizeof(recdata_head)
+
+/*
+	Little Endian
+	3byte -> signed long(4byte)
+*/
+static long b3_to_long32(unsigned char *ptr)
+{
+	char	buf[4];
+	
+	buf[0] = *ptr++;
+	buf[1] = *ptr++;
+	buf[2] = *ptr;
+	if (*ptr & 0x80) {
+		buf[3] = 0xFF;
+	} else {
+		buf[3] = 0;
+	}
+	return *((long*)buf);
+}
+
+/*
+	data decode
+*/
+static void read_high(FILE *fp)
+{
+	recdata_head	d;
+	int	ch, j;
+	uint8_t	data[AD_CH * AD_SAMPLE * AD_BYTES];
+
+	while(1) {
+		// Header
+		if (fread(&d, 1, REC_DATALEN_HEAD, fp) < 1) break;
+//fprintf(stderr, "%02d:%02d:%02d.%03d %d %d", d.hour, d.min, d.sec, (1000*j/AD_SAMPLE), d.tacc, d.valid);
+		if (d.freq > AD_SAMPLE || d.freq < 1) {
+			fprintf(stderr, "read_high() Error freq=%d\n", d.freq);
+			break;
+		}
+		int data_size = AD_CH * d.freq * AD_BYTES;
+		// AD data
+		if (fread(data, 1, data_size, fp) < 1) break;
+		for(j = 0; j < d.freq; j++) {
+			fprintf(stdout, "%02d:%02d:%02d.%03d", d.hour, d.min, d.sec, (1000*j/d.freq));
+			for(ch = 0; ch < AD_CH; ch++) {
+				fprintf(stdout, ",%+07ld", b3_to_long32((char*)(data + ch*d.freq*AD_BYTES + j*AD_BYTES)));
+			}
+			fprintf(stdout, "\n");
+		}
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	FILE	*fpin;
+	FILE	*fpout;
+	char	fname_out[128];
+	char	sz[32];
+	unsigned char	buf[256];
+
+//printf("len=%d\n", REC_DATALEN_HEAD);
+// exit(0);
+
+	if (argc == 1) {
+		printf("sciLogger high sample data converter Ver"VER"\n");
+		printf("Please set filename.\n");
+		exit(0);
+	}
+	
+	fpin = fopen(argv[1], "rb");
+
+	if (fpin == NULL) {
+		fprintf(stderr, "Input file open error.\n");
+		goto errout2;
+	}
+	// 出力ファイル名
+	strcpy(fname_out, argv[1]);
+	strcat(fname_out, ".txt");
+
+	fpout = freopen(fname_out, "w", stdout);
+	if (fpout == NULL) {
+		fprintf(stderr, "Output file open ERROR. %s\n", fname_out);
+		goto errout1;
+	}
+	read_high(fpin);
+
+	fclose(fpout);
+	fclose(fpin);
+	return 0;
+errout1:
+	fclose(fpin);
+errout2:
+	return -1;
+}
-- 
2.11.0