+++ /dev/null
-/*
- * This file is part of the sigrok project.
- *
- * Copyright (C) 2010-2012 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/>.
- */
-
-#include <stdio.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#ifdef _WIN32
-#include <windows.h>
-#else
-#include <termios.h>
-#endif
-#include <string.h>
-#include <sys/time.h>
-#include <inttypes.h>
-#ifdef _WIN32
-/* TODO */
-#else
-#include <arpa/inet.h>
-#endif
-#include <glib.h>
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-#include "ols.h"
-
-#define SERIALCOMM "115200/8n1"
-
-static const int hwcaps[] = {
- SR_HWCAP_LOGIC_ANALYZER,
- SR_HWCAP_SAMPLERATE,
- SR_HWCAP_CAPTURE_RATIO,
- SR_HWCAP_LIMIT_SAMPLES,
- SR_HWCAP_RLE,
- 0,
-};
-
-/* Probes are numbered 0-31 (on the PCB silkscreen). */
-static const char *probe_names[NUM_PROBES + 1] = {
- "0",
- "1",
- "2",
- "3",
- "4",
- "5",
- "6",
- "7",
- "8",
- "9",
- "10",
- "11",
- "12",
- "13",
- "14",
- "15",
- "16",
- "17",
- "18",
- "19",
- "20",
- "21",
- "22",
- "23",
- "24",
- "25",
- "26",
- "27",
- "28",
- "29",
- "30",
- "31",
- NULL,
-};
-
-/* default supported samplerates, can be overridden by device metadata */
-static const struct sr_samplerates samplerates = {
- SR_HZ(10),
- SR_MHZ(200),
- SR_HZ(1),
- NULL,
-};
-
-SR_PRIV struct sr_dev_driver ols_driver_info;
-static struct sr_dev_driver *di = &ols_driver_info;
-
-static int send_shortcommand(struct sr_serial_dev_inst *serial,
- uint8_t command)
-{
- char buf[1];
-
- sr_dbg("Sending cmd 0x%.2x.", command);
- buf[0] = command;
- if (serial_write(serial, buf, 1) != 1)
- return SR_ERR;
-
- return SR_OK;
-}
-
-static int send_longcommand(struct sr_serial_dev_inst *serial,
- uint8_t command, uint32_t data)
-{
- char buf[5];
-
- sr_dbg("Sending cmd 0x%.2x data 0x%.8x.", command, data);
- buf[0] = command;
- buf[1] = (data & 0xff000000) >> 24;
- buf[2] = (data & 0xff0000) >> 16;
- buf[3] = (data & 0xff00) >> 8;
- buf[4] = data & 0xff;
- if (serial_write(serial, buf, 5) != 5)
- return SR_ERR;
-
- return SR_OK;
-}
-
-static int configure_probes(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- const struct sr_probe *probe;
- const GSList *l;
- int probe_bit, stage, i;
- char *tc;
-
- devc = sdi->priv;
-
- devc->probe_mask = 0;
- for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
- devc->trigger_mask[i] = 0;
- devc->trigger_value[i] = 0;
- }
-
- devc->num_stages = 0;
- for (l = sdi->probes; l; l = l->next) {
- probe = (const struct sr_probe *)l->data;
- if (!probe->enabled)
- continue;
-
- /*
- * Set up the probe mask for later configuration into the
- * flag register.
- */
- probe_bit = 1 << (probe->index);
- devc->probe_mask |= probe_bit;
-
- if (!probe->trigger)
- continue;
-
- /* Configure trigger mask and value. */
- stage = 0;
- for (tc = probe->trigger; tc && *tc; tc++) {
- devc->trigger_mask[stage] |= probe_bit;
- if (*tc == '1')
- devc->trigger_value[stage] |= probe_bit;
- stage++;
- if (stage > 3)
- /*
- * TODO: Only supporting parallel mode, with
- * up to 4 stages.
- */
- return SR_ERR;
- }
- if (stage > devc->num_stages)
- devc->num_stages = stage;
- }
-
- return SR_OK;
-}
-
-static uint32_t reverse16(uint32_t in)
-{
- uint32_t out;
-
- out = (in & 0xff) << 8;
- out |= (in & 0xff00) >> 8;
- out |= (in & 0xff0000) << 8;
- out |= (in & 0xff000000) >> 8;
-
- return out;
-}
-
-static uint32_t reverse32(uint32_t in)
-{
- uint32_t out;
-
- out = (in & 0xff) << 24;
- out |= (in & 0xff00) << 8;
- out |= (in & 0xff0000) >> 8;
- out |= (in & 0xff000000) >> 24;
-
- return out;
-}
-
-static struct dev_context *ols_dev_new(void)
-{
- struct dev_context *devc;
-
- if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
- sr_err("Device context malloc failed.");
- return NULL;
- }
-
- devc->trigger_at = -1;
- devc->probe_mask = 0xffffffff;
- devc->cur_samplerate = SR_KHZ(200);
- devc->serial = NULL;
-
- return devc;
-}
-
-static struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial)
-{
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
- struct sr_probe *probe;
- uint32_t tmp_int, ui;
- uint8_t key, type, token;
- GString *tmp_str, *devname, *version;
- guchar tmp_c;
-
- sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, NULL, NULL, NULL);
- sdi->driver = di;
- devc = ols_dev_new();
- sdi->priv = devc;
-
- devname = g_string_new("");
- version = g_string_new("");
-
- key = 0xff;
- while (key) {
- if (serial_read(serial, &key, 1) != 1 || key == 0x00)
- break;
- type = key >> 5;
- token = key & 0x1f;
- switch (type) {
- case 0:
- /* NULL-terminated string */
- tmp_str = g_string_new("");
- while (serial_read(serial, &tmp_c, 1) == 1 && tmp_c != '\0')
- g_string_append_c(tmp_str, tmp_c);
- sr_dbg("Got metadata key 0x%.2x value '%s'.",
- key, tmp_str->str);
- switch (token) {
- case 0x01:
- /* Device name */
- devname = g_string_append(devname, tmp_str->str);
- break;
- case 0x02:
- /* FPGA firmware version */
- if (version->len)
- g_string_append(version, ", ");
- g_string_append(version, "FPGA version ");
- g_string_append(version, tmp_str->str);
- break;
- case 0x03:
- /* Ancillary version */
- if (version->len)
- g_string_append(version, ", ");
- g_string_append(version, "Ancillary version ");
- g_string_append(version, tmp_str->str);
- break;
- default:
- sr_info("ols: unknown token 0x%.2x: '%s'",
- token, tmp_str->str);
- break;
- }
- g_string_free(tmp_str, TRUE);
- break;
- case 1:
- /* 32-bit unsigned integer */
- if (serial_read(serial, &tmp_int, 4) != 4)
- break;
- tmp_int = reverse32(tmp_int);
- sr_dbg("Got metadata key 0x%.2x value 0x%.8x.",
- key, tmp_int);
- switch (token) {
- case 0x00:
- /* Number of usable probes */
- for (ui = 0; ui < tmp_int; ui++) {
- if (!(probe = sr_probe_new(ui, SR_PROBE_LOGIC, TRUE,
- probe_names[ui])))
- return 0;
- sdi->probes = g_slist_append(sdi->probes, probe);
- }
- break;
- case 0x01:
- /* Amount of sample memory available (bytes) */
- devc->max_samples = tmp_int;
- break;
- case 0x02:
- /* Amount of dynamic memory available (bytes) */
- /* what is this for? */
- break;
- case 0x03:
- /* Maximum sample rate (hz) */
- devc->max_samplerate = tmp_int;
- break;
- case 0x04:
- /* protocol version */
- devc->protocol_version = tmp_int;
- break;
- default:
- sr_info("Unknown token 0x%.2x: 0x%.8x.",
- token, tmp_int);
- break;
- }
- break;
- case 2:
- /* 8-bit unsigned integer */
- if (serial_read(serial, &tmp_c, 1) != 1)
- break;
- sr_dbg("Got metadata key 0x%.2x value 0x%.2x.",
- key, tmp_c);
- switch (token) {
- case 0x00:
- /* Number of usable probes */
- for (ui = 0; ui < tmp_c; ui++) {
- if (!(probe = sr_probe_new(ui, SR_PROBE_LOGIC, TRUE,
- probe_names[ui])))
- return 0;
- sdi->probes = g_slist_append(sdi->probes, probe);
- }
- break;
- case 0x01:
- /* protocol version */
- devc->protocol_version = tmp_c;
- break;
- default:
- sr_info("Unknown token 0x%.2x: 0x%.2x.",
- token, tmp_c);
- break;
- }
- break;
- default:
- /* unknown type */
- break;
- }
- }
-
- sdi->model = devname->str;
- sdi->version = version->str;
- g_string_free(devname, FALSE);
- g_string_free(version, FALSE);
-
- return sdi;
-}
-
-static int hw_init(struct sr_context *sr_ctx)
-{
- struct drv_context *drvc;
-
- if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
- sr_err("Driver context malloc failed.");
- return SR_ERR_MALLOC;
- }
- drvc->sr_ctx = sr_ctx;
- di->priv = drvc;
-
- return SR_OK;
-}
-
-static GSList *hw_scan(GSList *options)
-{
- struct sr_hwopt *opt;
- struct sr_dev_inst *sdi;
- struct drv_context *drvc;
- struct dev_context *devc;
- struct sr_probe *probe;
- struct sr_serial_dev_inst *serial;
- GPollFD probefd;
- GSList *l, *devices;
- int ret, i;
- const char *conn, *serialcomm;
- char buf[8];
-
- (void)options;
- drvc = di->priv;
- devices = NULL;
-
- conn = serialcomm = NULL;
- for (l = options; l; l = l->next) {
- opt = l->data;
- switch (opt->hwopt) {
- case SR_HWOPT_CONN:
- conn = opt->value;
- break;
- case SR_HWOPT_SERIALCOMM:
- serialcomm = opt->value;
- break;
- }
- }
- if (!conn)
- return NULL;
-
- if (serialcomm == NULL)
- serialcomm = SERIALCOMM;
-
- if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
- return NULL;
-
- /* The discovery procedure is like this: first send the Reset
- * command (0x00) 5 times, since the device could be anywhere
- * in a 5-byte command. Then send the ID command (0x02).
- * If the device responds with 4 bytes ("OLS1" or "SLA1"), we
- * have a match.
- */
- sr_info("Probing %s.", conn);
- if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
- return NULL;
-
- ret = SR_OK;
- for (i = 0; i < 5; i++) {
- if ((ret = send_shortcommand(serial, CMD_RESET)) != SR_OK) {
- sr_err("Port %s is not writable.", conn);
- break;
- }
- }
- if (ret != SR_OK) {
- serial_close(serial);
- sr_err("Could not use port %s. Quitting.", conn);
- return NULL;
- }
- send_shortcommand(serial, CMD_ID);
-
- /* Wait 10ms for a response. */
- usleep(10000);
-
- probefd.fd = serial->fd;
- probefd.events = G_IO_IN;
- g_poll(&probefd, 1, 1);
-
- if (probefd.revents != G_IO_IN)
- return NULL;
- if (serial_read(serial, buf, 4) != 4)
- return NULL;
- if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4))
- return NULL;
-
- /* Definitely using the OLS protocol, check if it supports
- * the metadata command.
- */
- send_shortcommand(serial, CMD_METADATA);
- if (g_poll(&probefd, 1, 10) > 0) {
- /* Got metadata. */
- sdi = get_metadata(serial);
- sdi->index = 0;
- devc = sdi->priv;
- } else {
- /* Not an OLS -- some other board that uses the sump protocol. */
- sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
- "Sump", "Logic Analyzer", "v1.0");
- sdi->driver = di;
- devc = ols_dev_new();
- for (i = 0; i < 32; i++) {
- if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE,
- probe_names[i])))
- return 0;
- sdi->probes = g_slist_append(sdi->probes, probe);
- }
- sdi->priv = devc;
- }
- devc->serial = serial;
- drvc->instances = g_slist_append(drvc->instances, sdi);
- devices = g_slist_append(devices, sdi);
-
- serial_close(serial);
-
- return devices;
-}
-
-static GSList *hw_dev_list(void)
-{
- struct drv_context *drvc;
-
- drvc = di->priv;
-
- return drvc->instances;
-}
-
-static int hw_dev_open(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
-
- devc = sdi->priv;
-
- if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
- return SR_ERR;
-
- sdi->status = SR_ST_ACTIVE;
-
- return SR_OK;
-}
-
-static int hw_dev_close(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
-
- devc = sdi->priv;
-
- if (devc->serial && devc->serial->fd != -1) {
- serial_close(devc->serial);
- sdi->status = SR_ST_INACTIVE;
- }
-
- return SR_OK;
-}
-
-static int hw_cleanup(void)
-{
- GSList *l;
- struct sr_dev_inst *sdi;
- struct drv_context *drvc;
- struct dev_context *devc;
- int ret = SR_OK;
-
- if (!(drvc = di->priv))
- return SR_OK;
-
- /* Properly close and free all devices. */
- for (l = drvc->instances; l; l = l->next) {
- if (!(sdi = l->data)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("%s: sdi was NULL, continuing", __func__);
- ret = SR_ERR_BUG;
- continue;
- }
- if (!(devc = sdi->priv)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("%s: sdi->priv was NULL, continuing", __func__);
- ret = SR_ERR_BUG;
- continue;
- }
- hw_dev_close(sdi);
- sr_serial_dev_inst_free(devc->serial);
- sr_dev_inst_free(sdi);
- }
- g_slist_free(drvc->instances);
- drvc->instances = NULL;
-
- return ret;
-}
-
-static int hw_info_get(int info_id, const void **data,
- const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
-
- switch (info_id) {
- case SR_DI_HWCAPS:
- *data = hwcaps;
- break;
- case SR_DI_NUM_PROBES:
- *data = GINT_TO_POINTER(1);
- break;
- case SR_DI_PROBE_NAMES:
- *data = probe_names;
- break;
- case SR_DI_SAMPLERATES:
- *data = &samplerates;
- break;
- case SR_DI_TRIGGER_TYPES:
- *data = (char *)TRIGGER_TYPES;
- break;
- case SR_DI_CUR_SAMPLERATE:
- if (sdi) {
- devc = sdi->priv;
- *data = &devc->cur_samplerate;
- } else
- return SR_ERR;
- break;
- default:
- return SR_ERR_ARG;
- }
-
- return SR_OK;
-}
-
-static int set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate)
-{
- struct dev_context *devc;
-
- devc = sdi->priv;
- if (devc->max_samplerate) {
- if (samplerate > devc->max_samplerate)
- return SR_ERR_SAMPLERATE;
- } else if (samplerate < samplerates.low || samplerate > samplerates.high)
- return SR_ERR_SAMPLERATE;
-
- if (samplerate > CLOCK_RATE) {
- devc->flag_reg |= FLAG_DEMUX;
- devc->cur_samplerate_divider = (CLOCK_RATE * 2 / samplerate) - 1;
- } else {
- devc->flag_reg &= ~FLAG_DEMUX;
- devc->cur_samplerate_divider = (CLOCK_RATE / samplerate) - 1;
- }
-
- /* Calculate actual samplerate used and complain if it is different
- * from the requested.
- */
- devc->cur_samplerate = CLOCK_RATE / (devc->cur_samplerate_divider + 1);
- if (devc->flag_reg & FLAG_DEMUX)
- devc->cur_samplerate *= 2;
- if (devc->cur_samplerate != samplerate)
- sr_err("Can't match samplerate %" PRIu64 ", using %"
- PRIu64 ".", samplerate, devc->cur_samplerate);
-
- return SR_OK;
-}
-
-static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
- const void *value)
-{
- struct dev_context *devc;
- int ret;
- const uint64_t *tmp_u64;
-
- devc = sdi->priv;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR;
-
- switch (hwcap) {
- case SR_HWCAP_SAMPLERATE:
- ret = set_samplerate(sdi, *(const uint64_t *)value);
- break;
- case SR_HWCAP_LIMIT_SAMPLES:
- tmp_u64 = value;
- if (*tmp_u64 < MIN_NUM_SAMPLES)
- return SR_ERR;
- if (*tmp_u64 > devc->max_samples)
- sr_err("Sample limit exceeds hardware maximum.");
- devc->limit_samples = *tmp_u64;
- sr_info("Sample limit is %" PRIu64 ".", devc->limit_samples);
- ret = SR_OK;
- break;
- case SR_HWCAP_CAPTURE_RATIO:
- devc->capture_ratio = *(const uint64_t *)value;
- if (devc->capture_ratio < 0 || devc->capture_ratio > 100) {
- devc->capture_ratio = 0;
- ret = SR_ERR;
- } else
- ret = SR_OK;
- break;
- case SR_HWCAP_RLE:
- if (GPOINTER_TO_INT(value)) {
- sr_info("Enabling RLE.");
- devc->flag_reg |= FLAG_RLE;
- }
- ret = SR_OK;
- break;
- default:
- ret = SR_ERR;
- }
-
- return ret;
-}
-
-static void abort_acquisition(const struct sr_dev_inst *sdi)
-{
- struct sr_datafeed_packet packet;
- struct dev_context *devc;
-
- devc = sdi->priv;
- sr_source_remove(devc->serial->fd);
-
- /* Terminate session */
- packet.type = SR_DF_END;
- sr_session_send(sdi, &packet);
-}
-
-static int receive_data(int fd, int revents, void *cb_data)
-{
- struct sr_datafeed_packet packet;
- struct sr_datafeed_logic logic;
- struct sr_dev_inst *sdi;
- struct drv_context *drvc;
- struct dev_context *devc;
- GSList *l;
- int num_channels, offset, i, j;
- unsigned char byte;
-
- drvc = di->priv;
-
- /* Find this device's devc struct by its fd. */
- devc = NULL;
- for (l = drvc->instances; l; l = l->next) {
- sdi = l->data;
- devc = sdi->priv;
- if (devc->serial->fd == fd)
- break;
- devc = NULL;
- }
- if (!devc)
- /* Shouldn't happen. */
- return TRUE;
-
- if (devc->num_transfers++ == 0) {
- /*
- * First time round, means the device started sending data,
- * and will not stop until done. If it stops sending for
- * longer than it takes to send a byte, that means it's
- * finished. We'll double that to 30ms to be sure...
- */
- sr_source_remove(fd);
- sr_source_add(fd, G_IO_IN, 30, receive_data, cb_data);
- devc->raw_sample_buf = g_try_malloc(devc->limit_samples * 4);
- if (!devc->raw_sample_buf) {
- sr_err("Sample buffer malloc failed.");
- return FALSE;
- }
- /* fill with 1010... for debugging */
- memset(devc->raw_sample_buf, 0x82, devc->limit_samples * 4);
- }
-
- num_channels = 0;
- for (i = 0x20; i > 0x02; i /= 2) {
- if ((devc->flag_reg & i) == 0)
- num_channels++;
- }
-
- if (revents == G_IO_IN) {
- if (serial_read(devc->serial, &byte, 1) != 1)
- return FALSE;
-
- /* Ignore it if we've read enough. */
- if (devc->num_samples >= devc->limit_samples)
- return TRUE;
-
- devc->sample[devc->num_bytes++] = byte;
- sr_dbg("Received byte 0x%.2x.", byte);
- if (devc->num_bytes == num_channels) {
- /* Got a full sample. */
- sr_dbg("Received sample 0x%.*x.",
- devc->num_bytes * 2, *(int *)devc->sample);
- if (devc->flag_reg & FLAG_RLE) {
- /*
- * In RLE mode -1 should never come in as a
- * sample, because bit 31 is the "count" flag.
- */
- if (devc->sample[devc->num_bytes - 1] & 0x80) {
- devc->sample[devc->num_bytes - 1] &= 0x7f;
- /*
- * FIXME: This will only work on
- * little-endian systems.
- */
- devc->rle_count = *(int *)(devc->sample);
- sr_dbg("RLE count: %d.", devc->rle_count);
- devc->num_bytes = 0;
- return TRUE;
- }
- }
- devc->num_samples += devc->rle_count + 1;
- if (devc->num_samples > devc->limit_samples) {
- /* Save us from overrunning the buffer. */
- devc->rle_count -= devc->num_samples - devc->limit_samples;
- devc->num_samples = devc->limit_samples;
- }
-
- if (num_channels < 4) {
- /*
- * Some channel groups may have been turned
- * off, to speed up transfer between the
- * hardware and the PC. Expand that here before
- * submitting it over the session bus --
- * whatever is listening on the bus will be
- * expecting a full 32-bit sample, based on
- * the number of probes.
- */
- j = 0;
- memset(devc->tmp_sample, 0, 4);
- for (i = 0; i < 4; i++) {
- if (((devc->flag_reg >> 2) & (1 << i)) == 0) {
- /*
- * This channel group was
- * enabled, copy from received
- * sample.
- */
- devc->tmp_sample[i] = devc->sample[j++];
- }
- }
- memcpy(devc->sample, devc->tmp_sample, 4);
- sr_dbg("Full sample: 0x%.8x.", *(int *)devc->sample);
- }
-
- /* the OLS sends its sample buffer backwards.
- * store it in reverse order here, so we can dump
- * this on the session bus later.
- */
- offset = (devc->limit_samples - devc->num_samples) * 4;
- for (i = 0; i <= devc->rle_count; i++) {
- memcpy(devc->raw_sample_buf + offset + (i * 4),
- devc->sample, 4);
- }
- memset(devc->sample, 0, 4);
- devc->num_bytes = 0;
- devc->rle_count = 0;
- }
- } else {
- /*
- * This is the main loop telling us a timeout was reached, or
- * we've acquired all the samples we asked for -- we're done.
- * Send the (properly-ordered) buffer to the frontend.
- */
- if (devc->trigger_at != -1) {
- /* a trigger was set up, so we need to tell the frontend
- * about it.
- */
- if (devc->trigger_at > 0) {
- /* there are pre-trigger samples, send those first */
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- logic.length = devc->trigger_at * 4;
- logic.unitsize = 4;
- logic.data = devc->raw_sample_buf +
- (devc->limit_samples - devc->num_samples) * 4;
- sr_session_send(cb_data, &packet);
- }
-
- /* send the trigger */
- packet.type = SR_DF_TRIGGER;
- sr_session_send(cb_data, &packet);
-
- /* send post-trigger samples */
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- logic.length = (devc->num_samples * 4) - (devc->trigger_at * 4);
- logic.unitsize = 4;
- logic.data = devc->raw_sample_buf + devc->trigger_at * 4 +
- (devc->limit_samples - devc->num_samples) * 4;
- sr_session_send(cb_data, &packet);
- } else {
- /* no trigger was used */
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- logic.length = devc->num_samples * 4;
- logic.unitsize = 4;
- logic.data = devc->raw_sample_buf +
- (devc->limit_samples - devc->num_samples) * 4;
- sr_session_send(cb_data, &packet);
- }
- g_free(devc->raw_sample_buf);
-
- serial_flush(devc->serial);
- abort_acquisition(sdi);
- serial_close(devc->serial);
- }
-
- return TRUE;
-}
-
-static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
- void *cb_data)
-{
- struct sr_datafeed_packet *packet;
- struct sr_datafeed_header *header;
- struct sr_datafeed_meta_logic meta;
- struct dev_context *devc;
- uint32_t trigger_config[4];
- uint32_t data;
- uint16_t readcount, delaycount;
- uint8_t changrp_mask;
- int num_channels;
- int i;
-
- devc = sdi->priv;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR;
-
- if (configure_probes(sdi) != SR_OK) {
- sr_err("Failed to configure probes.");
- return SR_ERR;
- }
-
- /*
- * Enable/disable channel groups in the flag register according to the
- * probe mask. Calculate this here, because num_channels is needed
- * to limit readcount.
- */
- changrp_mask = 0;
- num_channels = 0;
- for (i = 0; i < 4; i++) {
- if (devc->probe_mask & (0xff << (i * 8))) {
- changrp_mask |= (1 << i);
- num_channels++;
- }
- }
-
- /*
- * Limit readcount to prevent reading past the end of the hardware
- * buffer.
- */
- readcount = MIN(devc->max_samples / num_channels, devc->limit_samples) / 4;
-
- memset(trigger_config, 0, 16);
- trigger_config[devc->num_stages - 1] |= 0x08;
- if (devc->trigger_mask[0]) {
- delaycount = readcount * (1 - devc->capture_ratio / 100.0);
- devc->trigger_at = (readcount - delaycount) * 4 - devc->num_stages;
-
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_MASK_0,
- reverse32(devc->trigger_mask[0])) != SR_OK)
- return SR_ERR;
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_VALUE_0,
- reverse32(devc->trigger_value[0])) != SR_OK)
- return SR_ERR;
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_CONFIG_0,
- trigger_config[0]) != SR_OK)
- return SR_ERR;
-
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_MASK_1,
- reverse32(devc->trigger_mask[1])) != SR_OK)
- return SR_ERR;
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_VALUE_1,
- reverse32(devc->trigger_value[1])) != SR_OK)
- return SR_ERR;
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_CONFIG_1,
- trigger_config[1]) != SR_OK)
- return SR_ERR;
-
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_MASK_2,
- reverse32(devc->trigger_mask[2])) != SR_OK)
- return SR_ERR;
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_VALUE_2,
- reverse32(devc->trigger_value[2])) != SR_OK)
- return SR_ERR;
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_CONFIG_2,
- trigger_config[2]) != SR_OK)
- return SR_ERR;
-
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_MASK_3,
- reverse32(devc->trigger_mask[3])) != SR_OK)
- return SR_ERR;
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_VALUE_3,
- reverse32(devc->trigger_value[3])) != SR_OK)
- return SR_ERR;
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_CONFIG_3,
- trigger_config[3]) != SR_OK)
- return SR_ERR;
- } else {
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_MASK_0,
- devc->trigger_mask[0]) != SR_OK)
- return SR_ERR;
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_VALUE_0,
- devc->trigger_value[0]) != SR_OK)
- return SR_ERR;
- if (send_longcommand(devc->serial, CMD_SET_TRIGGER_CONFIG_0,
- 0x00000008) != SR_OK)
- return SR_ERR;
- delaycount = readcount;
- }
-
- sr_info("Setting samplerate to %" PRIu64 "Hz (divider %u, "
- "demux %s)", devc->cur_samplerate, devc->cur_samplerate_divider,
- devc->flag_reg & FLAG_DEMUX ? "on" : "off");
- if (send_longcommand(devc->serial, CMD_SET_DIVIDER,
- reverse32(devc->cur_samplerate_divider)) != SR_OK)
- return SR_ERR;
-
- /* Send sample limit and pre/post-trigger capture ratio. */
- data = ((readcount - 1) & 0xffff) << 16;
- data |= (delaycount - 1) & 0xffff;
- if (send_longcommand(devc->serial, CMD_CAPTURE_SIZE, reverse16(data)) != SR_OK)
- return SR_ERR;
-
- /* The flag register wants them here, and 1 means "disable channel". */
- devc->flag_reg |= ~(changrp_mask << 2) & 0x3c;
- devc->flag_reg |= FLAG_FILTER;
- devc->rle_count = 0;
- data = (devc->flag_reg << 24) | ((devc->flag_reg << 8) & 0xff0000);
- if (send_longcommand(devc->serial, CMD_SET_FLAGS, data) != SR_OK)
- return SR_ERR;
-
- /* Start acquisition on the device. */
- if (send_shortcommand(devc->serial, CMD_RUN) != SR_OK)
- return SR_ERR;
-
- sr_source_add(devc->serial->fd, G_IO_IN, -1, receive_data,
- cb_data);
-
- if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) {
- sr_err("Datafeed packet malloc failed.");
- return SR_ERR_MALLOC;
- }
-
- if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) {
- sr_err("Datafeed header malloc failed.");
- g_free(packet);
- return SR_ERR_MALLOC;
- }
-
- /* Send header packet to the session bus. */
- packet->type = SR_DF_HEADER;
- packet->payload = (unsigned char *)header;
- header->feed_version = 1;
- gettimeofday(&header->starttime, NULL);
- sr_session_send(cb_data, packet);
-
- /* Send metadata about the SR_DF_LOGIC packets to come. */
- packet->type = SR_DF_META_LOGIC;
- packet->payload = &meta;
- meta.samplerate = devc->cur_samplerate;
- meta.num_probes = NUM_PROBES;
- sr_session_send(cb_data, packet);
-
- g_free(header);
- g_free(packet);
-
- return SR_OK;
-}
-
-/* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
-static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
-{
- /* Avoid compiler warnings. */
- (void)cb_data;
-
- abort_acquisition(sdi);
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver ols_driver_info = {
- .name = "ols",
- .longname = "Openbench Logic Sniffer",
- .api_version = 1,
- .init = hw_init,
- .cleanup = hw_cleanup,
- .scan = hw_scan,
- .dev_list = hw_dev_list,
- .dev_clear = hw_cleanup,
- .dev_open = hw_dev_open,
- .dev_close = hw_dev_close,
- .info_get = hw_info_get,
- .dev_config_set = hw_dev_config_set,
- .dev_acquisition_start = hw_dev_acquisition_start,
- .dev_acquisition_stop = hw_dev_acquisition_stop,
- .priv = NULL,
-};
projects / libsigrok.git / blobdiff