libsigrok/hardware/openbench-logic-sniffer/protocol.h

127 lines
4.3 KiB
C

/*
* This file is part of the sigrok project.
*
* Copyright (C) 2013 Bert Vermeulen <bert@biot.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_OPENBENCH_LOGIC_SNIFFER_PROTOCOL_H
#define LIBSIGROK_HARDWARE_OPENBENCH_LOGIC_SNIFFER_PROTOCOL_H
#include <stdint.h>
#include <string.h>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
/* Message logging helpers with driver-specific prefix string. */
#define DRIVER_LOG_DOMAIN "ols: "
#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)
#define NUM_PROBES 32
#define NUM_TRIGGER_STAGES 4
#define TRIGGER_TYPE "01"
#define SERIAL_SPEED B115200
#define CLOCK_RATE SR_MHZ(100)
#define MIN_NUM_SAMPLES 4
/* Command opcodes */
#define CMD_RESET 0x00
#define CMD_RUN 0x01
#define CMD_ID 0x02
#define CMD_METADATA 0x04
#define CMD_SET_FLAGS 0x82
#define CMD_SET_DIVIDER 0x80
#define CMD_CAPTURE_SIZE 0x81
#define CMD_SET_TRIGGER_MASK_0 0xc0
#define CMD_SET_TRIGGER_MASK_1 0xc4
#define CMD_SET_TRIGGER_MASK_2 0xc8
#define CMD_SET_TRIGGER_MASK_3 0xcc
#define CMD_SET_TRIGGER_VALUE_0 0xc1
#define CMD_SET_TRIGGER_VALUE_1 0xc5
#define CMD_SET_TRIGGER_VALUE_2 0xc9
#define CMD_SET_TRIGGER_VALUE_3 0xcd
#define CMD_SET_TRIGGER_CONFIG_0 0xc2
#define CMD_SET_TRIGGER_CONFIG_1 0xc6
#define CMD_SET_TRIGGER_CONFIG_2 0xca
#define CMD_SET_TRIGGER_CONFIG_3 0xce
/* Bitmasks for CMD_FLAGS */
#define FLAG_DEMUX 0x01
#define FLAG_FILTER 0x02
#define FLAG_CHANNELGROUP_1 0x04
#define FLAG_CHANNELGROUP_2 0x08
#define FLAG_CHANNELGROUP_3 0x10
#define FLAG_CHANNELGROUP_4 0x20
#define FLAG_CLOCK_EXTERNAL 0x40
#define FLAG_CLOCK_INVERTED 0x80
#define FLAG_RLE 0x0100
/* Private, per-device-instance driver context. */
struct dev_context {
uint32_t max_samplerate;
uint32_t max_samples;
uint32_t protocol_version;
uint64_t cur_samplerate;
uint32_t cur_samplerate_divider;
uint64_t limit_samples;
/* Current state of the flag register */
uint32_t flag_reg;
/* Pre/post trigger capture ratio, in percentage.
* 0 means no pre-trigger data. */
int capture_ratio;
int trigger_at;
uint32_t probe_mask;
uint32_t trigger_mask[4];
uint32_t trigger_value[4];
int num_stages;
unsigned int num_transfers;
unsigned int num_samples;
int rle_count;
int num_bytes;
unsigned char sample[4];
unsigned char tmp_sample[4];
unsigned char *raw_sample_buf;
struct sr_serial_dev_inst *serial;
};
SR_PRIV extern const char *ols_probe_names[NUM_PROBES + 1];
SR_PRIV int send_shortcommand(struct sr_serial_dev_inst *serial,
uint8_t command);
SR_PRIV int send_longcommand(struct sr_serial_dev_inst *serial,
uint8_t command, uint32_t data);
SR_PRIV int ols_configure_probes(const struct sr_dev_inst *sdi);
SR_PRIV uint32_t reverse16(uint32_t in);
SR_PRIV uint32_t reverse32(uint32_t in);
SR_PRIV struct dev_context *ols_dev_new(void);
SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial);
SR_PRIV int ols_set_samplerate(const struct sr_dev_inst *sdi,
uint64_t samplerate);
SR_PRIV void abort_acquisition(const struct sr_dev_inst *sdi);
SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data);
#endif