+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.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 <glib.h>
-#include <errno.h>
-#include <string.h>
-#include <fcntl.h>
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-#include "protocol.h"
-
-static const int hwopts[] = {
- SR_CONF_CONN,
- SR_CONF_SERIALCOMM,
- 0,
-};
-
-static const int hwcaps[] = {
- SR_CONF_MULTIMETER,
- SR_CONF_LIMIT_SAMPLES,
- SR_CONF_CONTINUOUS,
- SR_CONF_LIMIT_MSEC,
- 0,
-};
-
-SR_PRIV struct sr_dev_driver brymen_dmm_driver_info;
-static struct sr_dev_driver *di = &brymen_dmm_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 void free_instance(void *inst)
-{
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
- if (!(sdi = inst))
- return;
- if (!(devc = sdi->priv))
- return;
- sr_serial_dev_inst_free(devc->serial);
- sr_dev_inst_free(sdi);
-}
-
-/* Properly close and free all devices. */
-static int clear_instances(void)
-{
- struct drv_context *drvc;
-
- if (!(drvc = di->priv))
- return SR_OK;
-
- g_slist_free_full(drvc->instances, free_instance);
- drvc->instances = NULL;
-
- return SR_OK;
-}
-
-static GSList *brymen_scan(const char *conn, const char *serialcomm)
-{
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
- struct drv_context *drvc;
- struct sr_probe *probe;
- struct sr_serial_dev_inst *serial;
- GSList *devices;
- int ret;
-
- if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
- return NULL;
-
- if (serial_open(serial, SERIAL_RDWR|SERIAL_NONBLOCK) != SR_OK)
- return NULL;
-
- sr_info("Probing port %s.", conn);
-
- devices = NULL;
-
- /* Request reading */
- if (brymen_packet_request(serial) == -1) {
- sr_err("Unable to send command. code: %d.", errno);
- goto scan_cleanup;
- }
-
- uint8_t buf[128];
- size_t len = 128;
-
- ret = brymen_stream_detect(serial, buf, &len, brymen_packet_length,
- brymen_packet_is_valid, 1000, 9600);
- if (ret != SR_OK)
- goto scan_cleanup;
-
- sr_info("Found device on port %s.", conn);
-
- if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Brymen", "BM85x", "")))
- goto scan_cleanup;
-
- if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
- sr_err("Device context malloc failed.");
- goto scan_cleanup;
- }
-
- devc->serial = serial;
- drvc = di->priv;
- sdi->priv = devc;
- sdi->driver = di;
-
- if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
- goto scan_cleanup;
-
- sdi->probes = g_slist_append(sdi->probes, probe);
- drvc->instances = g_slist_append(drvc->instances, sdi);
- devices = g_slist_append(devices, sdi);
-
-
-scan_cleanup:
- serial_close(serial);
-
- return devices;
-}
-
-static GSList *hw_scan(GSList *options)
-{
- struct drv_context *drvc;
- struct sr_config *src;
- GSList *devices, *l;
- const char *conn, *serialcomm;
-
- (void)options;
-
- devices = NULL;
- drvc = di->priv;
- drvc->instances = 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) {
- /* Use the provided comm specs. */
- devices = brymen_scan(conn, serialcomm);
- } else {
- /* But 9600 8N1 should work all of the time */
- devices = brymen_scan(conn, "9600/8n1/dtr=1/rts=1");
- }
-
- 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;
-
- if (!(devc = sdi->priv)) {
- sr_err("sdi->priv was NULL.");
- return SR_ERR_BUG;
- }
-
- if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != 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;
-
- if (!(devc = sdi->priv)) {
- sr_err("sdi->priv was NULL.");
- return SR_ERR_BUG;
- }
-
- if (devc->serial && devc->serial->fd != -1) {
- serial_close(devc->serial);
- sdi->status = SR_ST_INACTIVE;
- }
-
- return SR_OK;
-}
-
-static int hw_cleanup(void)
-{
- clear_instances();
-
- return SR_OK;
-}
-
-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;
- default:
- sr_err("Unknown config key: %d.", key);
- return SR_ERR_ARG;
- }
-
- return SR_OK;
-}
-
-static int hw_dev_config_set(int id, const void *value,
- const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- int ret;
-
- if (sdi->status != SR_ST_ACTIVE) {
- sr_err("Device inactive, can't set config options.");
- return SR_ERR;
- }
-
- if (!(devc = sdi->priv)) {
- sr_err("sdi->priv was NULL.");
- return SR_ERR_BUG;
- }
-
- ret = SR_OK;
- switch (id) {
- case SR_CONF_LIMIT_SAMPLES:
- devc->limit_samples = *(const uint64_t*)value;
- break;
- case SR_CONF_LIMIT_MSEC:
- devc->limit_msec = *(const uint64_t*)value;
- break;
- default:
- sr_err("Unknown hardware capability: %d.", id);
- ret = SR_ERR_ARG;
- }
-
- return ret;
-}
-
-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;
-
- if (!(devc = sdi->priv)) {
- sr_err("sdi->priv was NULL.");
- return SR_ERR_BUG;
- }
-
- sr_dbg("Starting acquisition.");
-
- devc->cb_data = cb_data;
-
- /*
- * Reset the number of samples to take. If we've already collected our
- * quota, but we start a new session, and don't reset this, we'll just
- * quit without acquiring any new samples.
- */
- devc->num_samples = 0;
- devc->starttime = g_get_monotonic_time();
-
- /* Send header packet to the session bus. */
- sr_dbg("Sending SR_DF_HEADER.");
- packet.type = SR_DF_HEADER;
- packet.payload = &header;
- header.feed_version = 1;
- gettimeofday(&header.starttime, NULL);
- sr_session_send(devc->cb_data, &packet);
-
- /* Poll every 50ms, or whenever some data comes in. */
- sr_source_add(devc->serial->fd, G_IO_IN, 50,
- brymen_dmm_receive_data, (void *)sdi);
-
- return SR_OK;
-}
-
-static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
-{
- struct sr_datafeed_packet packet;
- struct dev_context *devc;
-
- if (sdi->status != SR_ST_ACTIVE) {
- sr_err("Device inactive, can't stop acquisition.");
- return SR_ERR;
- }
-
- if (!(devc = sdi->priv)) {
- sr_err("sdi->priv was NULL.");
- return SR_ERR_BUG;
- }
-
- sr_dbg("Stopping acquisition.");
-
- sr_source_remove(devc->serial->fd);
- hw_dev_close((struct sr_dev_inst *)sdi);
-
- /* Send end packet to the session bus. */
- sr_dbg("Sending SR_DF_END.");
- packet.type = SR_DF_END;
- sr_session_send(cb_data, &packet);
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_dev_driver brymen_dmm_driver_info = {
- .name = "brymen-dmm",
- .longname = "Brymen BM850 series",
- .api_version = 1,
- .init = hw_init,
- .cleanup = hw_cleanup,
- .scan = hw_scan,
- .dev_list = hw_dev_list,
- .dev_clear = clear_instances,
- .dev_open = hw_dev_open,
- .dev_close = hw_dev_close,
- .config_list = config_list,
- .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