+++ /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 "protocol.h"
-
-#define SERIALCOMM "115200/8n1"
-
-static const int hwopts[] = {
- SR_CONF_CONN,
- SR_CONF_SERIALCOMM,
- 0,
-};
-
-static const int hwcaps[] = {
- SR_CONF_LOGIC_ANALYZER,
- SR_CONF_SAMPLERATE,
- SR_CONF_CAPTURE_RATIO,
- SR_CONF_LIMIT_SAMPLES,
- SR_CONF_RLE,
- 0,
-};
-
-/* Probes are numbered 0-31 (on the PCB silkscreen). */
-SR_PRIV const char *ols_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 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_config *src;
- 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) {
- src = l->data;
- switch (src->key) {
- case SR_CONF_CONN:
- conn = src->value;
- break;
- case SR_CONF_SERIALCOMM:
- serialcomm = src->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. */
- g_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,
- ols_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 config_get(int id, const void **data, const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
-
- switch (id) {
- case SR_CONF_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 config_set(int id, const void *value, const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- int ret;
- const uint64_t *tmp_u64;
-
- devc = sdi->priv;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR;
-
- switch (id) {
- case SR_CONF_SAMPLERATE:
- ret = ols_set_samplerate(sdi, *(const uint64_t *)value,
- &samplerates);
- break;
- case SR_CONF_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_CONF_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_CONF_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 int config_list(int key, const void **data, const struct sr_dev_inst *sdi)
-{
-
- (void)sdi;
-
- switch (key) {
- case SR_CONF_SCAN_OPTIONS:
- *data = hwopts;
- break;
- case SR_CONF_DEVICE_OPTIONS:
- *data = hwcaps;
- break;
- case SR_CONF_SAMPLERATE:
- *data = &samplerates;
- break;
- case SR_CONF_TRIGGER_TYPE:
- *data = (char *)TRIGGER_TYPE;
- break;
- default:
- return SR_ERR_ARG;
- }
-
- return SR_OK;
-}
-
-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 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 (ols_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, ols_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);
-
- 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,
- .config_get = config_get,
- .config_set = config_set,
- .config_list = config_list,
- .dev_open = hw_dev_open,
- .dev_close = hw_dev_close,
- .dev_acquisition_start = hw_dev_acquisition_start,
- .dev_acquisition_stop = hw_dev_acquisition_stop,
- .priv = NULL,
-};
projects / libsigrok.git / blobdiff