Reorganize project tree.

[libsigrok.git] / src / dmm / m2110.c

diff --git a/src/dmm/m2110.c b/src/dmm/m2110.c
new file mode 100644 (file)
index 0000000..5863cef
--- /dev/null
+++ b/src/dmm/m2110.c
@@ -0,0 +1,70 @@
+/*
+ * This file is part of the libsigrok project.
+ *
+ * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @file
+ *
+ * BBC Goerz Metrawatt M2110 ASCII protocol parser.
+ *
+ * Most probably the simplest multimeter protocol ever ;-) .
+ */
+
+#include <string.h>
+#include <math.h>
+#include <glib.h>
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+
+#define LOG_PREFIX "m2110"
+
+SR_PRIV gboolean sr_m2110_packet_valid(const uint8_t *buf)
+{
+       float val;
+
+       if ((buf[7] != '\r') || (buf[8] != '\n'))
+               return FALSE;
+
+       if (!strncmp((const char *)buf, "OVERRNG", 7))
+               return TRUE;
+
+       if (sscanf((const char *)buf, "%f", &val) == 1)
+               return TRUE;
+       else
+               return FALSE;
+}
+
+SR_PRIV int sr_m2110_parse(const uint8_t *buf, float *floatval,
+                               struct sr_datafeed_analog *analog, void *info)
+{
+       float val;
+
+       (void)info;
+
+       /* We don't know the unit, so that's the best we can do. */
+       analog->mq = SR_MQ_GAIN;
+       analog->unit = SR_UNIT_UNITLESS;
+       analog->mqflags = 0;
+
+       if (!strncmp((const char *)buf, "OVERRNG", 7))
+               *floatval = INFINITY;
+       else if (sscanf((const char *)buf, "%f", &val) == 1)
+               *floatval = val;
+
+       return SR_OK;
+}