--- /dev/null
+/*
+ * This file is part of the libsigrok project.
+ *
+ * Copyright (C) 2013 Aurelien Jacobs <aurel@gnuage.org>
+ *
+ * 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_APPA_55II_PROTOCOL_H
+#define LIBSIGROK_HARDWARE_APPA_55II_PROTOCOL_H
+
+#include <stdint.h>
+#include <glib.h>
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+
+#define LOG_PREFIX "appa-55ii"
+
+#define APPA_55II_NUM_CHANNELS 2
+#define APPA_55II_BUF_SIZE (4 + 32 + 1)
+#define DEFAULT_DATA_SOURCE DATA_SOURCE_LIVE
+
+enum {
+ DATA_SOURCE_LIVE,
+ DATA_SOURCE_MEMORY,
+};
+
+/** Private, per-device-instance driver context. */
+struct dev_context {
+ /* Acquisition settings */
+ uint64_t limit_samples; /**< The sampling limit (in number of samples). */
+ uint64_t limit_msec; /**< The time limit (in milliseconds). */
+ gboolean data_source; /**< Whether to read live samples or memory */
+ void *session_cb_data; /**< Opaque pointer passed in by the frontend. */
+
+ /* Operational state */
+ uint64_t num_samples; /**< The number of already received samples. */
+ int64_t start_time; /**< The time at which sampling started. */
+
+ /* Temporary state across callbacks */
+ uint8_t buf[APPA_55II_BUF_SIZE];
+ unsigned int buf_len;
+ uint8_t log_buf[64];
+ unsigned int log_buf_len;
+ unsigned int num_log_records;
+};
+
+SR_PRIV gboolean appa_55ii_packet_valid(const uint8_t *buf);
+SR_PRIV int appa_55ii_receive_data(int fd, int revents, void *cb_data);
+
+#endif