337 lines
8.2 KiB
C
337 lines
8.2 KiB
C
/*
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* This file is part of the libsigrok project.
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*
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* Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "protocol.h"
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static const int32_t hwopts[] = {
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SR_CONF_CONN,
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SR_CONF_SERIALCOMM,
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};
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static const int32_t hwcaps[] = {
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SR_CONF_THERMOMETER,
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SR_CONF_HYGROMETER,
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SR_CONF_LIMIT_SAMPLES,
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SR_CONF_LIMIT_MSEC,
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SR_CONF_CONTINUOUS,
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};
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SR_PRIV struct sr_dev_driver mic_98581_driver_info;
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SR_PRIV struct sr_dev_driver mic_98583_driver_info;
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SR_PRIV const struct mic_dev_info mic_devs[] = {
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{
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"MIC", "98581", "38400/8n2", 32000, TRUE, FALSE, 6,
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packet_valid_temp,
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&mic_98581_driver_info, receive_data_MIC_98581,
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},
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{
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"MIC", "98583", "38400/8n2", 32000, TRUE, TRUE, 10,
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packet_valid_temp_hum,
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&mic_98583_driver_info, receive_data_MIC_98583,
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},
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};
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static int clear_instances(int idx)
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{
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struct sr_dev_inst *sdi;
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struct drv_context *drvc;
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struct dev_context *devc;
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GSList *l;
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struct sr_dev_driver *di;
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di = mic_devs[idx].di;
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if (!(drvc = di->priv))
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return SR_OK;
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for (l = drvc->instances; l; l = l->next) {
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if (!(sdi = l->data))
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continue;
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if (!(devc = sdi->priv))
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continue;
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sr_serial_dev_inst_free(devc->serial);
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sr_dev_inst_free(sdi);
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}
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g_slist_free(drvc->instances);
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drvc->instances = NULL;
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return SR_OK;
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}
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static int hw_init(struct sr_context *sr_ctx, int idx)
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{
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sr_dbg("Selected '%s' subdriver.", mic_devs[idx].di->name);
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return std_hw_init(sr_ctx, mic_devs[idx].di, DRIVER_LOG_DOMAIN);
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}
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static GSList *scan(const char *conn, const char *serialcomm, int idx)
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{
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struct sr_dev_inst *sdi;
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struct drv_context *drvc;
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struct dev_context *devc;
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struct sr_probe *probe;
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struct sr_serial_dev_inst *serial;
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GSList *devices;
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if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
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return NULL;
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if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
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return NULL;
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drvc = mic_devs[idx].di->priv;
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devices = NULL;
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serial_flush(serial);
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/* TODO: Query device type. */
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// ret = mic_cmd_get_device_info(serial);
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sr_info("Found device on port %s.", conn);
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/* TODO: Fill in version from protocol response. */
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if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, mic_devs[idx].vendor,
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mic_devs[idx].device, "")))
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goto scan_cleanup;
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if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
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sr_err("Device context malloc failed.");
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goto scan_cleanup;
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}
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devc->serial = serial;
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sdi->priv = devc;
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sdi->driver = mic_devs[idx].di;
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if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "Temperature")))
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goto scan_cleanup;
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sdi->probes = g_slist_append(sdi->probes, probe);
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if (mic_devs[idx].has_humidity) {
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if (!(probe = sr_probe_new(1, SR_PROBE_ANALOG, TRUE, "Humidity")))
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goto scan_cleanup;
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sdi->probes = g_slist_append(sdi->probes, probe);
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}
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drvc->instances = g_slist_append(drvc->instances, sdi);
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devices = g_slist_append(devices, sdi);
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scan_cleanup:
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serial_close(serial);
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return devices;
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}
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static GSList *hw_scan(GSList *options, int idx)
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{
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struct sr_config *src;
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GSList *l, *devices;
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const char *conn, *serialcomm;
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conn = serialcomm = NULL;
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for (l = options; l; l = l->next) {
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src = l->data;
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switch (src->key) {
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case SR_CONF_CONN:
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conn = g_variant_get_string(src->data, NULL);
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break;
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case SR_CONF_SERIALCOMM:
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serialcomm = g_variant_get_string(src->data, NULL);
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break;
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}
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}
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if (!conn)
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return NULL;
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if (serialcomm) {
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/* Use the provided comm specs. */
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devices = scan(conn, serialcomm, idx);
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} else {
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/* Try the default. */
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devices = scan(conn, mic_devs[idx].conn, idx);
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}
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return devices;
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}
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static GSList *hw_dev_list(int idx)
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{
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return ((struct drv_context *)(mic_devs[idx].di->priv))->instances;
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}
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static int hw_dev_open(struct sr_dev_inst *sdi)
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{
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struct dev_context *devc;
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devc = sdi->priv;
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if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
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return SR_ERR;
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sdi->status = SR_ST_ACTIVE;
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return SR_OK;
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}
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static int hw_dev_close(struct sr_dev_inst *sdi)
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{
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struct dev_context *devc;
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devc = sdi->priv;
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if (devc->serial && devc->serial->fd != -1) {
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serial_close(devc->serial);
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sdi->status = SR_ST_INACTIVE;
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}
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return SR_OK;
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}
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static int hw_cleanup(int idx)
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{
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clear_instances(idx);
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return SR_OK;
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}
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static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
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{
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struct dev_context *devc;
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if (sdi->status != SR_ST_ACTIVE)
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return SR_ERR;
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devc = sdi->priv;
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switch (id) {
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case SR_CONF_LIMIT_SAMPLES:
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devc->limit_samples = g_variant_get_uint64(data);
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sr_dbg("Setting sample limit to %" PRIu64 ".",
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devc->limit_samples);
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break;
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case SR_CONF_LIMIT_MSEC:
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devc->limit_msec = g_variant_get_uint64(data);
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sr_dbg("Setting time limit to %" PRIu64 "ms.",
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devc->limit_msec);
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break;
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default:
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sr_err("Unknown config: %d.", id);
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return SR_ERR_ARG;
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}
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return SR_OK;
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}
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static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
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{
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(void)sdi;
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switch (key) {
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case SR_CONF_SCAN_OPTIONS:
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*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
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hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
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break;
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case SR_CONF_DEVICE_OPTIONS:
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*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
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hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
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break;
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default:
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return SR_ERR_ARG;
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}
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return SR_OK;
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}
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static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
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void *cb_data, int idx)
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{
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struct dev_context *devc;
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devc = sdi->priv;
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devc->cb_data = cb_data;
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devc->num_samples = 0;
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devc->starttime = g_get_monotonic_time();
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/* Send header packet to the session bus. */
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std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
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/* Poll every 100ms, or whenever some data comes in. */
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sr_source_add(devc->serial->fd, G_IO_IN, 100,
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mic_devs[idx].receive_data, (void *)sdi);
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return SR_OK;
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}
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static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
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{
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return std_hw_dev_acquisition_stop_serial(sdi, cb_data, hw_dev_close,
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((struct dev_context *)(sdi->priv))->serial, DRIVER_LOG_DOMAIN);
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}
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/* Driver-specific API function wrappers */
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#define HW_INIT(X) \
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static int hw_init_##X(struct sr_context *sr_ctx) { return hw_init(sr_ctx, X); }
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#define HW_CLEANUP(X) \
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static int hw_cleanup_##X(void) { return hw_cleanup(X); }
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#define HW_SCAN(X) \
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static GSList *hw_scan_##X(GSList *options) { return hw_scan(options, X); }
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#define HW_DEV_LIST(X) \
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static GSList *hw_dev_list_##X(void) { return hw_dev_list(X); }
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#define CLEAR_INSTANCES(X) \
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static int clear_instances_##X(void) { return clear_instances(X); }
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#define HW_DEV_ACQUISITION_START(X) \
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static int hw_dev_acquisition_start_##X(const struct sr_dev_inst *sdi, \
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void *cb_data) { return hw_dev_acquisition_start(sdi, cb_data, X); }
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/* Driver structs and API function wrappers */
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#define DRV(ID, ID_UPPER, NAME, LONGNAME) \
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HW_INIT(ID_UPPER) \
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HW_CLEANUP(ID_UPPER) \
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HW_SCAN(ID_UPPER) \
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HW_DEV_LIST(ID_UPPER) \
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CLEAR_INSTANCES(ID_UPPER) \
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HW_DEV_ACQUISITION_START(ID_UPPER) \
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SR_PRIV struct sr_dev_driver ID##_driver_info = { \
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.name = NAME, \
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.longname = LONGNAME, \
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.api_version = 1, \
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.init = hw_init_##ID_UPPER, \
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.cleanup = hw_cleanup_##ID_UPPER, \
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.scan = hw_scan_##ID_UPPER, \
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.dev_list = hw_dev_list_##ID_UPPER, \
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.dev_clear = clear_instances_##ID_UPPER, \
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.config_get = NULL, \
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.config_set = config_set, \
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.config_list = config_list, \
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.dev_open = hw_dev_open, \
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.dev_close = hw_dev_close, \
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.dev_acquisition_start = hw_dev_acquisition_start_##ID_UPPER, \
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.dev_acquisition_stop = hw_dev_acquisition_stop, \
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.priv = NULL, \
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};
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DRV(mic_98581, MIC_98581, "mic-98581", "MIC 98581")
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DRV(mic_98583, MIC_98583, "mic-98583", "MIC 98583")
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