318 lines
6.7 KiB
C
318 lines
6.7 KiB
C
/*
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* This file is part of the sigrok project.
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*
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* Copyright (C) 2012 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 <fcntl.h>
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#include <glib.h>
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#include "libsigrok.h"
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#include "libsigrok-internal.h"
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#include "protocol.h"
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#define SERIALCOMM "9600/8e1"
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static const int hwopts[] = {
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SR_HWOPT_CONN,
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SR_HWOPT_SERIALCOMM,
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0,
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};
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static const int hwcaps[] = {
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SR_HWCAP_SOUNDLEVELMETER,
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SR_HWCAP_LIMIT_SAMPLES,
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SR_HWCAP_CONTINUOUS,
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0,
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};
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SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info;
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static struct sr_dev_driver *di = &tondaj_sl_814_driver_info;
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/* Properly close and free all devices. */
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static int clear_instances(void)
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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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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)
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{
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struct drv_context *drvc;
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if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
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sr_err("Driver context malloc failed.");
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return SR_ERR_MALLOC;
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}
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drvc->sr_ctx = sr_ctx;
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di->priv = drvc;
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return SR_OK;
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}
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static GSList *hw_scan(GSList *options)
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{
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struct drv_context *drvc;
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struct dev_context *devc;
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struct sr_dev_inst *sdi;
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struct sr_config *src;
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struct sr_probe *probe;
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GSList *devices, *l;
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const char *conn, *serialcomm;
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devices = NULL;
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drvc = di->priv;
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drvc->instances = NULL;
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conn = serialcomm = NULL;
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for (l = options; l; l = l->next) {
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if (!(src = l->data)) {
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sr_err("Invalid option data, skipping.");
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continue;
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}
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switch (src->key) {
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case SR_HWOPT_CONN:
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conn = src->value;
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break;
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case SR_HWOPT_SERIALCOMM:
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serialcomm = src->value;
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break;
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default:
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sr_err("Unknown option %d, skipping.", src->key);
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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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serialcomm = SERIALCOMM;
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if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Tondaj",
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"SL-814", NULL))) {
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sr_err("Failed to create device instance.");
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return NULL;
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}
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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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return NULL;
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}
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if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm)))
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return NULL;
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if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
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return NULL;
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sdi->priv = devc;
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sdi->driver = di;
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probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1");
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if (!probe) {
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sr_err("Failed to create probe.");
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return NULL;
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}
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sdi->probes = g_slist_append(sdi->probes, probe);
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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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return devices;
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}
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static GSList *hw_dev_list(void)
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{
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struct drv_context *drvc;
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drvc = di->priv;
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return drvc->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(void)
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{
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clear_instances();
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return SR_OK;
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}
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static int hw_info_get(int info_id, const void **data,
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const struct sr_dev_inst *sdi)
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{
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(void)sdi;
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switch (info_id) {
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case SR_DI_HWOPTS:
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*data = hwopts;
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break;
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case SR_DI_HWCAPS:
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*data = hwcaps;
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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_config_set(const struct sr_dev_inst *sdi, int hwcap,
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const void *value)
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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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sr_err("Device inactive, can't set config options.");
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return SR_ERR;
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}
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devc = sdi->priv;
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switch (hwcap) {
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case SR_HWCAP_LIMIT_SAMPLES:
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devc->limit_samples = *(const uint64_t *)value;
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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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default:
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sr_err("Unknown hardware capability: %d.", hwcap);
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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)
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{
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struct sr_datafeed_packet packet;
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struct sr_datafeed_header header;
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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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/* Send header packet to the session bus. */
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sr_dbg("Sending SR_DF_HEADER.");
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packet.type = SR_DF_HEADER;
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packet.payload = (uint8_t *)&header;
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header.feed_version = 1;
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gettimeofday(&header.starttime, NULL);
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sr_session_send(devc->cb_data, &packet);
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/* Poll every 500ms, or whenever some data comes in. */
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sr_source_add(devc->serial->fd, G_IO_IN, 500,
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tondaj_sl_814_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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int ret, final_ret;
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struct sr_datafeed_packet packet;
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struct dev_context *devc;
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final_ret = SR_OK;
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if (sdi->status != SR_ST_ACTIVE) {
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sr_err("Device inactive, can't stop acquisition.");
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return SR_ERR;
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}
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devc = sdi->priv;
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if ((ret = sr_source_remove(devc->serial->fd)) < 0) {
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sr_err("Error removing source: %d.", ret);
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final_ret = SR_ERR;
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}
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if ((ret = hw_dev_close(sdi)) < 0) {
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sr_err("Error closing device: %d.", ret);
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final_ret = SR_ERR;
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}
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/* Send end packet to the session bus. */
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sr_dbg("Sending SR_DF_END.");
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packet.type = SR_DF_END;
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sr_session_send(cb_data, &packet);
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return final_ret;
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}
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SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info = {
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.name = "tondaj-sl-814",
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.longname = "Tondaj SL-814",
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.api_version = 1,
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.init = hw_init,
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.cleanup = hw_cleanup,
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.scan = hw_scan,
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.dev_list = hw_dev_list,
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.dev_clear = clear_instances,
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.dev_open = hw_dev_open,
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.dev_close = hw_dev_close,
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.info_get = hw_info_get,
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.dev_config_set = hw_dev_config_set,
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.dev_acquisition_start = hw_dev_acquisition_start,
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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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