Initial version to dump receives messages in hex

6 files changed, 460 insertions, 0 deletions

diff --git a/src/GNUmakefile b/src/GNUmakefile
new file mode 100644
index 0000000..bc3f189
--- /dev/null
+++ b/src/GNUmakefile
@@ -0,0 +1,8 @@
+CPPFLAGS ?= -O0 -Wall
+all: qxdm-log
+
+qxdm-log: framing.o serial.o qxdm-log.o
+	$(CC) $(CPPFLAGS) -o $@ $^ $(LIBS)
+
+clean:
+	@rm -f qxdm-log *.o
diff --git a/src/framing.c b/src/framing.c
new file mode 100644
index 0000000..a6696f9
--- /dev/null
+++ b/src/framing.c
@@ -0,0 +1,201 @@
+/*
+ * Author: Dieter Spaar  
+ * October 2012
+ *
+ * Modified by Holger Freyther
+ */
+
+#include "framing.h"
+
+#include <stdio.h>
+#include <string.h>
+
+
+#define PACKET_START_STOP   0x7E
+#define PACKET_ESCAPE       0x7D
+
+#define CRC_SEED        0xFFFF
+
+/*
+ * Comment is from: utils.c of libqcdm
+ * QCDM protocol frames are pseudo Async HDLC frames which end with a 3-byte
+ * trailer.  This trailer consists of the 16-bit CRC of the frame plus an ending
+ * "async control character" whose value is 0x7E.  The frame *and* the CRC are
+ * escaped before adding the trailing control character so that the control
+ * character (0x7E) and the escape marker (0x7D) are never seen in the frame.
+ */
+
+
+/* 16 bit CRC, generator polynomial 0x8408 */
+static const uint16_t crc_ccit16[256] = 
+{
+	0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
+	0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
+	0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
+	0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
+	0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
+	0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
+	0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
+	0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
+	0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
+	0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
+	0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
+	0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
+	0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
+	0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
+	0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
+	0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
+	0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
+	0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
+	0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
+	0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
+	0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
+	0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
+	0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
+	0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
+	0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
+	0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
+	0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
+	0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
+	0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
+	0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
+	0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
+	0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
+};
+
+static uint16_t crc16(const uint8_t *data, size_t len)
+{
+	uint16_t crc = CRC_SEED;
+
+	for(; len != 0; len--, data++) 
+		crc = crc_ccit16[(crc ^ *data) & 0x00ff] ^ (crc >> 8);
+
+    	/* return the 1's complement */
+    	return ~crc; 
+}
+
+#define DO_ESCAPE(x, idx, out, out_len) \
+    if(x == PACKET_START_STOP || x == PACKET_ESCAPE) \
+    { \
+        if(idx + 2 > out_len) \
+        { \
+            printf("output buffer too small need %d have %d\n", idx + 2, out_len); \
+            return -1; \
+        } \
+        out[idx++] = PACKET_ESCAPE; \
+        out[idx++] = (x ^ 0x20); \
+    } \
+    else \
+    { \
+        if(idx + 1 > out_len) \
+        { \
+            printf("output buffer too small need %d have %d\n", idx + 2, out_len); \
+            return -1; \
+        } \
+        out[idx++] = x; \
+    } \
+
+int frame_pack(const uint8_t *in, const size_t in_len, uint8_t *out, const size_t out_len)
+{
+	uint8_t c;
+	size_t i, idx = 0;
+
+	/* packet data */
+	for (i = 0; i < in_len; i++) {
+		c = in[i];
+		DO_ESCAPE(c, idx, out, out_len);
+	}
+    
+    	/* two bytes CRC */
+	uint16_t crc = crc16(in, in_len);
+
+	c = (uint8_t) (crc & 0xFF);
+	DO_ESCAPE(c, idx, out, out_len);
+    
+	c = (uint8_t) (crc >> 8);
+    	DO_ESCAPE(c, idx, out, out_len);
+
+	/* end of packet */
+	out[idx++] = PACKET_START_STOP;
+	return idx;
+}
+
+#undef DO_ESCAPE
+
+/* returns number of bytes in pPacket if a packet is complete */
+int frame_unpack(uint8_t *pDataIn, int nDataIn, uint8_t *pPacket)
+{
+	static uint8_t ubBuf[MAX_PACKET * 2];
+	static int nDataBuf = 0;
+	int i;
+
+	if(nDataIn > sizeof(ubBuf)) {
+		printf("Too many data\n");
+		return -1;
+	}
+
+	/* is there enough free space in the buffer ? */
+
+	if(nDataIn + nDataBuf >= sizeof(ubBuf)) {
+		/* no, empty buffer */
+		nDataBuf = 0;
+	}
+
+	/* append data to buffer */
+	memcpy(ubBuf + nDataBuf, pDataIn, nDataIn);
+	nDataBuf += nDataIn;
+
+	/* search for packet end */
+	int idxStop = -1;
+	for (i = 0; i < nDataBuf; i++) {
+		if (ubBuf[i] == PACKET_START_STOP) {
+			idxStop = i;
+			break;
+		}
+	}
+
+	if (idxStop < 0)
+		return 0;
+
+	/* get packet */
+
+	int nDataPacket = 0;
+	int bEscape = 0;
+	for (i = 0; i < idxStop; i++)
+	{
+		if (ubBuf[i] == PACKET_ESCAPE) {
+			bEscape = 1;
+		} else {
+			if (bEscape)
+				pPacket[nDataPacket++] = (ubBuf[i] ^ 0x20);
+			else
+				pPacket[nDataPacket++] = ubBuf[i];
+			bEscape = 0;
+		}
+		if (nDataPacket >= MAX_PACKET) {
+			printf("Too many packet data\n");
+			return -1;
+		}
+	}
+
+	/* remove packet from buffer */
+	memmove(ubBuf, ubBuf + idxStop + 1, nDataBuf - (idxStop + 1));
+	nDataBuf -= (idxStop + 1);
+
+	/* check CRC */
+
+	if (nDataPacket <= 2) {
+		printf("Not enough packet data\n");
+		return -1;
+	}
+
+	uint16_t crc = crc16(pPacket, nDataPacket - 2);
+	if((crc & 0xFF) != pPacket[nDataPacket - 2] || 
+			(crc >> 8) != pPacket[nDataPacket - 1]) {
+		printf("Invalid CRC (0x%04X != 0x%02X%02X)\n",
+			crc, pPacket[nDataPacket - 1], pPacket[nDataPacket - 2]);
+		return -1;
+	}
+
+	return nDataPacket - 2;
+}
diff --git a/src/framing.h b/src/framing.h
new file mode 100644
index 0000000..3d96853
--- /dev/null
+++ b/src/framing.h
@@ -0,0 +1,12 @@
+#ifndef framing_h
+#define framing_h
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#define MAX_PACKET 2048
+
+int frame_pack(const uint8_t *in, const size_t in_len, uint8_t *out, const size_t out_len);
+int frame_unpack(uint8_t *pDataIn, int nDataIn, uint8_t *pPacket);
+
+#endif
diff --git a/src/qxdm-log.c b/src/qxdm-log.c
new file mode 100644
index 0000000..9a949ce
--- /dev/null
+++ b/src/qxdm-log.c
@@ -0,0 +1,199 @@
+#include "framing.h"
+#include "serial.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+char *DumpBYTEs(unsigned char *p, long n, int nBytesPerRow /* = 16 */, char *szLineSep /* = "\n" */, int bRaw /* = FALSE */, const char *szIndent /* = "" */)
+{
+  long i;
+  char szBuf[20];
+  static char szRes[4 * 1024];
+
+  szRes[0] = 0;
+
+  if(n == 0)
+    return szRes;
+
+  memset(szBuf, 0, sizeof(szBuf));
+  for(i = 0; i < n; i++)
+  {
+    if(i % nBytesPerRow == 0)
+    {
+        strcat(szRes, szIndent);
+        if(!bRaw)
+            sprintf(szRes + strlen(szRes), "%04d : ", i);
+    }
+
+    sprintf(szRes + strlen(szRes), "%02X ", p[i]);
+    szBuf[i % nBytesPerRow] = (char)((p[i] < 128 && p[i] >= ' ') ?  p[i] : '.'); 
+
+    if((i + 1) % nBytesPerRow == 0)
+    {
+      if(bRaw)
+        sprintf(szRes + strlen(szRes), "%s", szLineSep);
+      else
+        sprintf(szRes + strlen(szRes), "  %s%s", szBuf, szLineSep);
+      memset(szBuf, 0, sizeof(szBuf));
+    } 
+  }
+
+  if(i % nBytesPerRow != 0)
+  {
+    if(bRaw)
+      sprintf(szRes + strlen(szRes), "%s", szLineSep);
+    else
+    {
+      n = nBytesPerRow - i % nBytesPerRow;
+      for(i = 0; i < n ; i++) 
+        sprintf(szRes + strlen(szRes), "   ");
+      sprintf(szRes + strlen(szRes), "  %s%s", szBuf, szLineSep);
+    }
+  }
+
+  return szRes;
+}
+
+static int transmit_packet(int fd, const uint8_t *data, size_t data_len)
+{
+	int out_len, rc;
+	uint8_t packet[MAX_PACKET * 2];	
+
+	out_len = frame_pack(data, data_len, packet, sizeof(packet));
+	if (out_len < 0) {
+		printf("Failed to pack packet\n");
+		return -1;
+	}
+
+	rc = write(fd, packet, out_len);
+	if (rc != out_len) {
+		printf("Short write on packet.\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+static int do_read(int fd, uint8_t *data)
+{
+	uint8_t buf[MAX_PACKET];
+	int rc;
+
+	rc = read(fd, buf, sizeof(buf));
+	if (rc <= 0 ) {
+		printf("Short read!\n");
+		exit(EXIT_FAILURE);
+	}
+
+	rc = frame_unpack(buf, rc, data);	
+	if (rc > 0) {
+		printf("Got %d data of payload\n", rc); 
+		printf("%s\n", DumpBYTEs(data, rc, 16, "\n", 0, ""));
+	}
+
+	return rc;
+}
+
+static void do_configure(int fd)
+{
+	static uint8_t timestamp[] = { 0x1D };
+	static uint8_t enable_logging[] = {
+		0x73, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
+		0x05, 0x00, 0x00, 0x00, 0x28, 0x04, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x02, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, 0x00
+	};
+	static const uint8_t enable_evt_report[] = {
+		0x60, 0x01
+	};
+	static const uint8_t disable_evt_report[] = {
+		0x60, 0x00
+	};
+	static const uint8_t extended_report_cfg[] = {
+		0x7D, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		0x02, 0x00, 0x00, 0x00,
+	};
+
+	uint8_t data[MAX_PACKET];
+
+	/* TODO: introduce a wait for response kind of method */
+	transmit_packet(fd, timestamp, sizeof(timestamp));
+	do_read(fd, data);
+
+	/* enable the event report */
+//	transmit_packet(fd, enable_evt_report, sizeof(enable_evt_report));
+//	do_read(fd, data);
+	transmit_packet(fd, disable_evt_report, sizeof(disable_evt_report));
+	do_read(fd, data);
+
+	transmit_packet(fd, extended_report_cfg, sizeof(extended_report_cfg));
+	do_read(fd, data);
+
+	/* enable the logging */
+	transmit_packet(fd, enable_logging, sizeof(enable_logging));
+	do_read(fd, data);
+}
+
+int main(int argc, char **argv)
+{
+	uint8_t data[MAX_PACKET];
+	int flags;
+
+	int fd, rc;
+	if (argc < 2) {
+		printf("Invoke with %s PATH_TO_SERIAL\n",
+			argv[0]);
+		return EXIT_FAILURE;
+	}
+
+	/* Use nonblock as the device might block otherwise */
+	fd = open(argv[1], O_RDWR | O_NOCTTY | O_SYNC | O_NONBLOCK);
+	if (fd < 0) {
+		printf("Opening the serial failed: %d/%s\n",
+			errno, strerror(errno));
+		return EXIT_FAILURE;
+	}
+
+	flags = fcntl(fd, F_GETFL, 0);
+	if (flags < 0) {
+		printf("Failed to get the flags.\n");
+		return EXIT_FAILURE;
+	}
+
+	flags &= ~O_NONBLOCK;
+	rc = fcntl(fd, F_SETFL, flags);
+	if (rc != 0) {
+		printf("Failed to set the flags.\n");
+		return EXIT_FAILURE;
+	}
+
+	rc = serial_configure(fd);
+	if (rc != 0)
+		return EXIT_FAILURE;
+
+	do_configure(fd);
+
+	while (1)
+		do_read(fd, data);
+}
diff --git a/src/serial.c b/src/serial.c
new file mode 100644
index 0000000..cf52a94
--- /dev/null
+++ b/src/serial.c
@@ -0,0 +1,34 @@
+#include <termios.h>
+#include <stdio.h>
+#include <errno.h>
+
+int serial_configure(int fd)
+{
+	struct termios term;
+	int rc;
+
+	rc = tcgetattr(fd, &term);
+	if (rc != 0) {
+		printf("Error with tcgetattr: %d\n", errno);
+		return -1;
+	}
+
+	/* taken from libqcdm but I doubt that is copyrightable */
+	term.c_cflag &= ~(CBAUD | CSIZE | CSTOPB | CLOCAL | PARENB);
+	term.c_iflag &= ~(HUPCL | IUTF8 | IUCLC | ISTRIP | IXON | IXOFF | IXANY | ICRNL);
+	term.c_oflag &= ~(OPOST | OCRNL | ONLCR | OLCUC | ONLRET);
+	term.c_lflag &= ~(ICANON | ISIG | IEXTEN | ECHO | ECHOE | ECHOK | ECHONL);
+ 	term.c_lflag &= ~(NOFLSH | XCASE | TOSTOP | ECHOPRT | ECHOCTL | ECHOKE);
+	term.c_cc[VMIN] = 1;
+ 	term.c_cc[VTIME] = 0;
+ 	term.c_cc[VEOF] = 1;
+	term.c_cflag |= (B115200 | CS8 | CREAD | 0 | 0);
+
+	rc = tcsetattr(fd, TCSANOW, &term);
+	if (rc != 0) {
+		printf("Failed to set new attributes: %d\n", errno);
+		return -2;
+	}
+
+	return 0;
+}
diff --git a/src/serial.h b/src/serial.h
new file mode 100644
index 0000000..df90a3a
--- /dev/null
+++ b/src/serial.h
@@ -0,0 +1,6 @@
+#ifndef serial_h
+#define serial_h
+
+int serial_configure(int fd);
+
+#endif