brymen-dmm: Initial driver skeleton.

[libsigrok.git] / hardware / brymen-dmm / protocol.h

diff --git a/hardware/brymen-dmm/protocol.h b/hardware/brymen-dmm/protocol.h
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+/*
+ * This file is part of the libsigrok project.
+ *
+ * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * 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/>.
+ */
+
+#ifndef LIBSIGROK_HARDWARE_BRYMEN_DMM_PROTOCOL_H
+#define LIBSIGROK_HARDWARE_BRYMEN_DMM_PROTOCOL_H
+
+#include <stdint.h>
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+
+/* Message logging helpers with driver-specific prefix string. */
+#define DRIVER_LOG_DOMAIN "brymen-dmm: "
+#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args)
+#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args)
+#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args)
+
+/** Private, per-device-instance driver context. */
+struct dev_context {
+       /** The current sampling limit (in number of samples). */
+       uint64_t limit_samples;
+
+       /** The current sampling limit (in ms). */
+       uint64_t limit_msec;
+
+       /** Opaque pointer passed in by the frontend. */
+       void *cb_data;
+
+       /** The current number of already received samples. */
+       uint64_t num_samples;
+};
+
+SR_PRIV int brymen_dmm_receive_data(int fd, int revents, void *cb_data);
+
+#endif