302 lines
6.7 KiB
C
302 lines
6.7 KiB
C
/*
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* This file is part of the libsigrok project.
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*
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* Copyright (C) 2016 Eva Kissling <eva.kissling@bluewin.ch>
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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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include "protocol.h"
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static const uint32_t drvopts[] = {
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SR_CONF_LOGIC_ANALYZER,
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};
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static const uint32_t scanopts[] = {
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SR_CONF_CONN,
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};
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static const uint32_t devopts[] = {
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SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
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SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
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SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
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};
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static const int32_t trigger_matches[] = {
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SR_TRIGGER_ZERO,
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SR_TRIGGER_ONE,
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SR_TRIGGER_RISING,
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SR_TRIGGER_FALLING,
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SR_TRIGGER_EDGE,
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};
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static void ipdbg_la_split_addr_port(const char *conn, char **addr,
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char **port)
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{
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char **strs = g_strsplit(conn, "/", 3);
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*addr = g_strdup(strs[1]);
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*port = g_strdup(strs[2]);
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g_strfreev(strs);
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}
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static GSList *scan(struct sr_dev_driver *di, GSList *options)
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{
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struct drv_context *drvc;
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GSList *devices;
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devices = NULL;
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drvc = di->context;
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drvc->instances = NULL;
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const char *conn;
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struct sr_config *src;
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GSList *l;
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conn = 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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}
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}
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if (!conn)
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return NULL;
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struct ipdbg_la_tcp *tcp = ipdbg_la_tcp_new();
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ipdbg_la_split_addr_port(conn, &tcp->address, &tcp->port);
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if (!tcp->address)
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return NULL;
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if (ipdbg_la_tcp_open(tcp) != SR_OK)
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return NULL;
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ipdbg_la_send_reset(tcp);
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ipdbg_la_send_reset(tcp);
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if (ipdbg_la_request_id(tcp) != SR_OK)
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return NULL;
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struct sr_dev_inst *sdi = g_malloc0(sizeof(struct sr_dev_inst));
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sdi->status = SR_ST_INACTIVE;
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sdi->vendor = g_strdup("ipdbg.org");
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sdi->model = g_strdup("IPDBG LA");
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sdi->version = g_strdup("v1.0");
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sdi->driver = di;
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struct dev_context *devc = ipdbg_la_dev_new();
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sdi->priv = devc;
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ipdbg_la_get_addrwidth_and_datawidth(tcp, devc);
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sr_dbg("addr_width = %d, data_width = %d\n", devc->addr_width,
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devc->data_width);
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sr_dbg("limit samples = %" PRIu64 "\n", devc->limit_samples_max);
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for (uint32_t i = 0; i < devc->data_width; i++) {
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char *name = g_strdup_printf("CH%d", i);
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sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, name);
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g_free(name);
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}
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sdi->inst_type = SR_INST_USER;
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sdi->conn = tcp;
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ipdbg_la_tcp_close(tcp);
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devices = g_slist_append(devices, sdi);
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return std_scan_complete(di, devices);
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}
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static int dev_clear(const struct sr_dev_driver *di)
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{
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struct drv_context *drvc = di->context;
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struct sr_dev_inst *sdi;
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GSList *l;
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if (drvc) {
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for (l = drvc->instances; l; l = l->next) {
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sdi = l->data;
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struct ipdbg_la_tcp *tcp = sdi->conn;
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if (tcp) {
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ipdbg_la_tcp_close(tcp);
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ipdbg_la_tcp_free(tcp);
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g_free(tcp);
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}
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sdi->conn = NULL;
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}
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}
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return std_dev_clear(di);
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}
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static int dev_open(struct sr_dev_inst *sdi)
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{
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struct ipdbg_la_tcp *tcp = sdi->conn;
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if (!tcp)
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return SR_ERR;
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if (ipdbg_la_tcp_open(tcp) != SR_OK)
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return SR_ERR;
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return SR_OK;
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}
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static int dev_close(struct sr_dev_inst *sdi)
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{
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/* Should be called before a new call to scan(). */
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struct ipdbg_la_tcp *tcp = sdi->conn;
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if (tcp)
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ipdbg_la_tcp_close(tcp);
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sdi->conn = NULL;
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return SR_OK;
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}
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static int config_get(uint32_t key, GVariant **data,
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const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
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{
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struct dev_context *devc = sdi->priv;
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(void)cg;
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switch (key) {
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case SR_CONF_CAPTURE_RATIO:
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*data = g_variant_new_uint64(devc->capture_ratio);
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break;
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case SR_CONF_LIMIT_SAMPLES:
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*data = g_variant_new_uint64(devc->limit_samples);
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break;
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default:
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return SR_ERR_NA;
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}
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return SR_OK;
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}
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static int config_set(uint32_t key, GVariant *data,
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const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
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{
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struct dev_context *devc = sdi->priv;
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(void)cg;
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switch (key) {
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case SR_CONF_CAPTURE_RATIO:
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devc->capture_ratio = g_variant_get_uint64(data);
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break;
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case SR_CONF_LIMIT_SAMPLES:
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{
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uint64_t limit_samples = g_variant_get_uint64(data);
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if (limit_samples <= devc->limit_samples_max)
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devc->limit_samples = limit_samples;
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}
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break;
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default:
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return SR_ERR_NA;
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}
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return SR_OK;
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}
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static int config_list(uint32_t key, GVariant **data,
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const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
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{
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switch (key) {
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case SR_CONF_SCAN_OPTIONS:
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case SR_CONF_DEVICE_OPTIONS:
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return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
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case SR_CONF_TRIGGER_MATCH:
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*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
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break;
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default:
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return SR_ERR_NA;
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}
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return SR_OK;
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}
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static int dev_acquisition_start(const struct sr_dev_inst *sdi)
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{
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struct ipdbg_la_tcp *tcp = sdi->conn;
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struct dev_context *devc = sdi->priv;
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ipdbg_la_convert_trigger(sdi);
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ipdbg_la_send_trigger(devc, tcp);
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ipdbg_la_send_delay(devc, tcp);
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/* If the device stops sending for longer than it takes to send a byte,
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* that means it's finished. But wait at least 100 ms to be safe.
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*/
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sr_session_source_add(sdi->session, tcp->socket, G_IO_IN, 100,
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ipdbg_la_receive_data, (struct sr_dev_inst *)sdi);
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ipdbg_la_send_start(tcp);
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return SR_OK;
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}
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static int dev_acquisition_stop(struct sr_dev_inst *sdi)
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{
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struct ipdbg_la_tcp *tcp = sdi->conn;
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struct dev_context *devc = sdi->priv;
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const size_t bufsize = 1024;
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uint8_t buffer[bufsize];
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if (devc->num_transfers > 0) {
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while (devc->num_transfers <
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(devc->limit_samples_max * devc->data_width_bytes)) {
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int recd = ipdbg_la_tcp_receive(tcp, buffer, bufsize);
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if (recd > 0)
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devc->num_transfers += recd;
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}
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}
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ipdbg_la_send_reset(tcp);
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ipdbg_la_abort_acquisition(sdi);
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return SR_OK;
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}
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static struct sr_dev_driver ipdbg_la_driver_info = {
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.name = "ipdbg-la",
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.longname = "IPDBG LA",
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.api_version = 1,
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.init = std_init,
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.cleanup = std_cleanup,
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.scan = scan,
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.dev_list = std_dev_list,
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.dev_clear = dev_clear,
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.config_get = config_get,
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.config_set = config_set,
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.config_list = config_list,
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.dev_open = dev_open,
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.dev_close = dev_close,
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.dev_acquisition_start = dev_acquisition_start,
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.dev_acquisition_stop = dev_acquisition_stop,
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.context = NULL,
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};
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SR_REGISTER_DEV_DRIVER(ipdbg_la_driver_info);
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