1 files changed, 81 insertions, 0 deletions
diff --git a/test/testprotocol.c b/test/testprotocol.c
new file mode 100644
index 0000000..51758be
--- /dev/null
+++ b/test/testprotocol.c
@@ -0,0 +1,81 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static int outputformat = 0;
+
+void
+SynapticsReadPacket(int fd)
+{
+    int count = 0;
+    int inSync = 0;
+    unsigned char pBuf[7], u;
+
+    while (read(fd,&u, 1) == 1) {
+	pBuf[count++] = u;
+
+	/* check first byte */
+	if ((count == 1) && ((u & 0xC8) != 0x80)) {
+	    inSync = 0;
+	    count = 0;
+	    printf("Synaptics driver lost sync at 1st byte\n");
+	    continue;
+	}
+
+	/* check 4th byte */
+	if ((count == 4) && ((u & 0xc8) != 0xc0)) {
+	    inSync = 0;
+	    count = 0;
+	    printf("Synaptics driver lost sync at 4th byte\n");
+	    continue;
+	}
+
+	if (count >= 6) { /* Full packet received */
+	    if (!inSync) {
+		inSync = 1;
+		printf("Synaptics driver resynced.\n");
+	    }
+	    count = 0;
+	    switch (outputformat) {
+	    case 1:
+		printf("Paket:%02X-%02X-%02X-%02X-%02X-%02X\n",
+		       pBuf[0], pBuf[1], pBuf[2], pBuf[3], pBuf[4], pBuf[5]);
+		break;
+	    case 2:
+		printf("x = %i, y = %i, z = %i, w = %i, l = %i, r = %i\n",
+		       ((pBuf[3] & 0x10) << 8) | ((pBuf[1] & 0x0f) << 8) | pBuf[4],
+		       ((pBuf[3] & 0x20) << 7) | ((pBuf[1] & 0xf0) << 4) | pBuf[5],
+		       ((pBuf[0] & 0x30) >> 2) | ((pBuf[0] & 0x04) >> 1) | ((pBuf[3] & 0x04) >> 2),
+		       ((pBuf[0] & 0x30) >> 2) | ((pBuf[0] & 0x04) >> 1) | ((pBuf[3] & 0x04) >> 2),
+		       (pBuf[0] & 0x01) ? 1 : 0,
+		       (pBuf[0] & 0x2) ? 1 : 0);
+		break;
+	    default:
+		break;
+	    }
+	}
+    }
+}
+
+int main(int argc, char* argv[])
+{
+    int fd;
+
+    if (argc > 1)
+	outputformat = atoi(argv[1]);
+
+
+    fd = open("/dev/psaux", O_RDONLY);
+    if (fd == -1) {
+	printf("Error opening /dev/psaux\n");
+	exit(1);
+    }
+
+    SynapticsReadPacket(fd);
+
+    close(fd);
+
+    exit(0);
+}