libsigrok/hardware/asix-sigma/asix-sigma.h

196 lines
4.3 KiB
C

/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2010 Håvard Espeland <gus@ping.uio.no>,
* Copyright (C) 2010 Martin Stensgård <mastensg@ping.uio.no>
* Copyright (C) 2010 Carl Henrik Lunde <chlunde@ping.uio.no>
*
* 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_ASIX_SIGMA_ASIX_SIGMA_H
#define LIBSIGROK_HARDWARE_ASIX_SIGMA_ASIX_SIGMA_H
#define LOG_PREFIX "asix-sigma"
enum sigma_write_register {
WRITE_CLOCK_SELECT = 0,
WRITE_TRIGGER_SELECT0 = 1,
WRITE_TRIGGER_SELECT1 = 2,
WRITE_MODE = 3,
WRITE_MEMROW = 4,
WRITE_POST_TRIGGER = 5,
WRITE_TRIGGER_OPTION = 6,
WRITE_PIN_VIEW = 7,
WRITE_TEST = 15,
};
enum sigma_read_register {
READ_ID = 0,
READ_TRIGGER_POS_LOW = 1,
READ_TRIGGER_POS_HIGH = 2,
READ_TRIGGER_POS_UP = 3,
READ_STOP_POS_LOW = 4,
READ_STOP_POS_HIGH = 5,
READ_STOP_POS_UP = 6,
READ_MODE = 7,
READ_PIN_CHANGE_LOW = 8,
READ_PIN_CHANGE_HIGH = 9,
READ_BLOCK_LAST_TS_LOW = 10,
READ_BLOCK_LAST_TS_HIGH = 11,
READ_PIN_VIEW = 12,
READ_TEST = 15,
};
#define REG_ADDR_LOW (0 << 4)
#define REG_ADDR_HIGH (1 << 4)
#define REG_DATA_LOW (2 << 4)
#define REG_DATA_HIGH_WRITE (3 << 4)
#define REG_READ_ADDR (4 << 4)
#define REG_DRAM_WAIT_ACK (5 << 4)
/* Bit (1 << 4) can be low or high (double buffer / cache) */
#define REG_DRAM_BLOCK (6 << 4)
#define REG_DRAM_BLOCK_BEGIN (8 << 4)
#define REG_DRAM_BLOCK_DATA (10 << 4)
#define LEDSEL0 6
#define LEDSEL1 7
#define NEXT_REG 1
#define EVENTS_PER_CLUSTER 7
#define CHUNK_SIZE 1024
struct clockselect_50 {
uint8_t async;
uint8_t fraction;
uint16_t disabled_probes;
};
/* The effect of all these are still a bit unclear. */
struct triggerinout {
uint8_t trgout_resistor_enable : 1;
uint8_t trgout_resistor_pullup : 1;
uint8_t reserved1 : 1;
uint8_t trgout_bytrigger : 1;
uint8_t trgout_byevent : 1;
uint8_t trgout_bytriggerin : 1;
uint8_t reserved2 : 2;
/* Should be set same as the first two */
uint8_t trgout_resistor_enable2 : 1;
uint8_t trgout_resistor_pullup2 : 1;
uint8_t reserved3 : 1;
uint8_t trgout_long : 1;
uint8_t trgout_pin : 1; /* Use 1k resistor. Pullup? */
uint8_t trgin_negate : 1;
uint8_t trgout_enable : 1;
uint8_t trgin_enable : 1;
};
struct triggerlut {
/* The actual LUTs. */
uint16_t m0d[4], m1d[4], m2d[4];
uint16_t m3, m3s, m4;
/* Paramters should be sent as a single register write. */
struct {
uint8_t selc : 2;
uint8_t selpresc : 6;
uint8_t selinc : 2;
uint8_t selres : 2;
uint8_t sela : 2;
uint8_t selb : 2;
uint16_t cmpb;
uint16_t cmpa;
} params;
};
/* Trigger configuration */
struct sigma_trigger {
/* Only two probes can be used in mask. */
uint16_t risingmask;
uint16_t fallingmask;
/* Simple trigger support (<= 50 MHz). */
uint16_t simplemask;
uint16_t simplevalue;
/* TODO: Advanced trigger support (boolean expressions). */
};
/* Events for trigger operation. */
enum triggerop {
OP_LEVEL = 1,
OP_NOT,
OP_RISE,
OP_FALL,
OP_RISEFALL,
OP_NOTRISE,
OP_NOTFALL,
OP_NOTRISEFALL,
};
/* Logical functions for trigger operation. */
enum triggerfunc {
FUNC_AND = 1,
FUNC_NAND,
FUNC_OR,
FUNC_NOR,
FUNC_XOR,
FUNC_NXOR,
};
struct sigma_state {
enum {
SIGMA_UNINITIALIZED = 0,
SIGMA_IDLE,
SIGMA_CAPTURE,
SIGMA_DOWNLOAD,
} state;
uint32_t stoppos, triggerpos;
uint16_t lastts;
uint16_t lastsample;
int triggerchunk;
int chunks_downloaded;
};
/* Private, per-device-instance driver context. */
struct dev_context {
struct ftdi_context ftdic;
uint64_t cur_samplerate;
uint64_t period_ps;
uint64_t limit_msec;
struct timeval start_tv;
int cur_firmware;
int num_probes;
int samples_per_event;
int capture_ratio;
struct sigma_trigger trigger;
int use_triggers;
struct sigma_state state;
void *cb_data;
};
#endif