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

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/*
2013-04-23 20:24:30 +00:00
* 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 (0x0 << 4)
#define REG_ADDR_HIGH (0x1 << 4)
#define REG_DATA_LOW (0x2 << 4)
#define REG_DATA_HIGH_WRITE (0x3 << 4)
#define REG_READ_ADDR (0x4 << 4)
#define REG_DRAM_WAIT_ACK (0x5 << 4)
/* Bit (1 << 4) can be low or high (double buffer / cache) */
#define REG_DRAM_BLOCK (0x6 << 4)
#define REG_DRAM_BLOCK_BEGIN (0x8 << 4)
#define REG_DRAM_BLOCK_DATA (0xa << 4)
#define LEDSEL0 6
#define LEDSEL1 7
#define NEXT_REG 1
#define EVENTS_PER_CLUSTER 7
#define CHUNK_SIZE 1024
/*
* The entire ASIX Sigma DRAM is an array of struct sigma_dram_line[1024];
*/
/* One "DRAM cluster" contains a timestamp and 7 samples, 16b total. */
struct sigma_dram_cluster {
uint8_t timestamp_lo;
uint8_t timestamp_hi;
struct {
uint8_t sample_hi;
uint8_t sample_lo;
} samples[7];
};
/* One "DRAM line" contains 64 "DRAM clusters", 1024b total. */
struct sigma_dram_line {
struct sigma_dram_cluster cluster[64];
};
struct clockselect_50 {
uint8_t async;
uint8_t fraction;
uint16_t disabled_channels;
};
/* 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 channels 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;
uint16_t lastts;
uint16_t lastsample;
};
/* Private, per-device-instance driver context. */
struct dev_context {
struct ftdi_context ftdic;
uint64_t cur_samplerate;
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uint64_t period_ps;
uint64_t limit_msec;
struct timeval start_tv;
int cur_firmware;
int num_channels;
int cur_channels;
int samples_per_event;
int capture_ratio;
struct sigma_trigger trigger;
int use_triggers;
struct sigma_state state;
void *cb_data;
};
#endif