--- /dev/null
+/*
+ * This file is part of the libsigrok project.
+ *
+ * Copyright (C) 2017 Kumar Abhishek <abhishek@theembeddedkitchen.net>
+ * Portions of the code are adopted from scpi_tcp.c and scpi.c
+ *
+ * Copyright (C) 2013 Martin Ling <martin-sigrok@earth.li>
+ * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@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 <config.h>
+#ifdef _WIN32
+#define _WIN32_WINNT 0x0501
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#endif
+#include <glib.h>
+#include <string.h>
+#include <unistd.h>
+#ifndef _WIN32
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#endif
+#include <errno.h>
+
+#include "protocol.h"
+#include "beaglelogic.h"
+
+static int beaglelogic_tcp_open(struct dev_context *devc) {
+ struct addrinfo hints;
+ struct addrinfo *results, *res;
+ int err;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_protocol = IPPROTO_TCP;
+
+ err = getaddrinfo(devc->address, devc->port, &hints, &results);
+
+ if (err) {
+ sr_err("Address lookup failed: %s:%s: %s", devc->address,
+ devc->port, gai_strerror(err));
+ return SR_ERR;
+ }
+
+ for (res = results; res; res = res->ai_next) {
+ if ((devc->socket = socket(res->ai_family, res->ai_socktype,
+ res->ai_protocol)) < 0)
+ continue;
+ if (connect(devc->socket, res->ai_addr, res->ai_addrlen) != 0) {
+ close(devc->socket);
+ devc->socket = -1;
+ continue;
+ }
+ break;
+ }
+
+ freeaddrinfo(results);
+
+ if (devc->socket < 0) {
+ sr_err("Failed to connect to %s:%s: %s", devc->address,
+ devc->port, g_strerror(errno));
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
+static int beaglelogic_tcp_send_cmd(struct dev_context *devc,
+ const char *format, ...) {
+ int len, out;
+ va_list args, args_copy;
+ char *buf;
+
+ va_start(args, format);
+ va_copy(args_copy, args);
+ len = vsnprintf(NULL, 0, format, args_copy);
+ va_end(args_copy);
+
+ buf = g_malloc0(len + 2);
+ vsprintf(buf, format, args);
+ va_end(args);
+
+ if (buf[len - 1] != '\n')
+ buf[len] = '\n';
+
+ out = send(devc->socket, buf, strlen(buf), 0);
+
+ if (out < 0) {
+ sr_err("Send error: %s", g_strerror(errno));
+ return SR_ERR;
+ }
+
+ if (out < (int)strlen(buf)) {
+ sr_dbg("Only sent %d/%d bytes of command: '%s'.", out,
+ strlen(buf), buf);
+ }
+
+ sr_spew("Sent command: '%s'.", buf);
+ g_free(buf);
+
+ return SR_OK;
+}
+
+static int beaglelogic_tcp_read_data(struct dev_context *devc, char *buf,
+ int maxlen) {
+ int len;
+
+ len = recv(devc->socket, buf, maxlen, 0);
+
+ if (len < 0) {
+ sr_err("Receive error: %s", g_strerror(errno));
+ return SR_ERR;
+ }
+
+ return len;
+}
+
+static int beaglelogic_tcp_get_string(struct dev_context *devc, const char *cmd,
+ char **tcp_resp) {
+ GString *response = g_string_sized_new(1024);
+ int len;
+ gint64 timeout;
+
+ if (cmd) {
+ if (beaglelogic_tcp_send_cmd(devc, cmd) != SR_OK) {
+ return SR_ERR;
+ }
+ }
+
+ timeout = g_get_monotonic_time() + devc->read_timeout;
+ len = beaglelogic_tcp_read_data(devc, response->str,
+ response->allocated_len);
+
+ if (len < 0) {
+ g_string_free(response, TRUE);
+ return SR_ERR;
+ }
+
+ if (len > 0) {
+ g_string_set_size(response, len);
+ }
+
+ if (g_get_monotonic_time() > timeout) {
+ sr_err("Timed out waiting for response.");
+ g_string_free(response, TRUE);
+ return SR_ERR_TIMEOUT;
+ }
+
+ /* Remove trailing newline if present */
+ if (response->len >= 1 && response->str[response->len - 1] == '\n')
+ g_string_truncate(response, response->len - 1);
+
+ /* Remove trailing carriage return if present */
+ if (response->len >= 1 && response->str[response->len - 1] == '\r')
+ g_string_truncate(response, response->len - 1);
+
+ sr_spew("Got response: '%.70s', length %" G_GSIZE_FORMAT ".",
+ response->str, response->len);
+
+ *tcp_resp = g_string_free(response, FALSE);
+ return SR_OK;
+}
+
+static int beaglelogic_tcp_get_int(struct dev_context *devc,
+ const char *cmd, int *response) {
+ int ret;
+ char *resp = NULL;
+
+ ret = beaglelogic_tcp_get_string(devc, cmd, &resp);
+ if (!resp && ret != SR_OK)
+ return ret;
+
+ if (sr_atoi(resp, response) == SR_OK)
+ ret = SR_OK;
+ else
+ ret = SR_ERR_DATA;
+
+ g_free(resp);
+
+ return ret;
+}
+
+SR_PRIV int beaglelogic_tcp_detect(struct dev_context *devc) {
+ char *resp = NULL;
+ int ret;
+
+ ret = beaglelogic_tcp_get_string(devc, "version", &resp);
+ if (ret == SR_OK && !g_ascii_strncasecmp(resp, "BeagleLogic", 11))
+ ret = SR_OK;
+ else
+ ret = SR_ERR;
+
+ g_free(resp);
+ return ret;
+}
+
+static int beaglelogic_open(struct dev_context *devc) {
+ return beaglelogic_tcp_open(devc);
+}
+
+static int beaglelogic_close(struct dev_context *devc) {
+ g_free(devc->address);
+ g_free(devc->port);
+
+ if (close(devc->socket) < 0)
+ return SR_ERR;
+
+ return SR_OK;
+}
+
+static int beaglelogic_get_buffersize(struct dev_context *devc) {
+ return beaglelogic_tcp_get_int(devc, "memalloc",
+ (int *)&devc->buffersize);
+}
+
+static int beaglelogic_set_buffersize(struct dev_context *devc) {
+ int ret;
+ char *resp;
+
+ beaglelogic_tcp_send_cmd(devc, "memalloc %lu", devc->buffersize);
+ ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
+ if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
+ ret = SR_OK;
+ else
+ ret = SR_ERR;
+
+ g_free(resp);
+ return ret;
+}
+
+static int beaglelogic_get_samplerate(struct dev_context *devc) {
+ int arg, err;
+ err = beaglelogic_tcp_get_int(devc, "samplerate", &arg);
+ devc->cur_samplerate = arg;
+ return err;
+}
+
+static int beaglelogic_set_samplerate(struct dev_context *devc) {
+ int ret;
+ char *resp;
+
+ beaglelogic_tcp_send_cmd(devc, "samplerate %lu",
+ (uint32_t)devc->cur_samplerate);
+ ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
+ if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
+ ret = SR_OK;
+ else
+ ret = SR_ERR;
+
+ g_free(resp);
+ return ret;
+}
+
+static int beaglelogic_get_sampleunit(struct dev_context *devc) {
+ return beaglelogic_tcp_get_int(devc, "sampleunit",
+ (int *)&devc->sampleunit);
+}
+
+static int beaglelogic_set_sampleunit(struct dev_context *devc) {
+ int ret;
+ char *resp;
+
+ beaglelogic_tcp_send_cmd(devc, "sampleunit %lu", devc->sampleunit);
+ ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
+ if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
+ ret = SR_OK;
+ else
+ ret = SR_ERR;
+
+ g_free(resp);
+ return ret;
+}
+
+static int beaglelogic_get_triggerflags(struct dev_context *devc) {
+ return beaglelogic_tcp_get_int(devc, "triggerflags",
+ (int *)&devc->triggerflags);
+}
+
+static int beaglelogic_set_triggerflags(struct dev_context *devc) {
+ int ret;
+ char *resp;
+
+ beaglelogic_tcp_send_cmd(devc, "triggerflags %lu", devc->triggerflags);
+ ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
+ if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
+ ret = SR_OK;
+ else
+ ret = SR_ERR;
+
+ g_free(resp);
+ return ret;
+}
+
+static int beaglelogic_get_lasterror(struct dev_context *devc) {
+ devc->last_error = 0;
+ return SR_OK;
+}
+
+static int beaglelogic_start(struct dev_context *devc) {
+ return beaglelogic_tcp_send_cmd(devc, "get");
+}
+
+static int beaglelogic_stop(struct dev_context *devc) {
+ return beaglelogic_tcp_send_cmd(devc, "close");
+}
+
+static int beaglelogic_get_bufunitsize(struct dev_context *devc) {
+ return beaglelogic_tcp_get_int(devc, "bufunitsize",
+ (int *)&devc->bufunitsize);
+}
+
+static int beaglelogic_set_bufunitsize(struct dev_context *devc) {
+ int ret;
+ char *resp;
+
+ beaglelogic_tcp_send_cmd(devc, "bufunitsize %ld", devc->bufunitsize);
+ ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
+ if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
+ ret = SR_OK;
+ else
+ ret = SR_ERR;
+
+ g_free(resp);
+ return ret;
+}
+
+static int dummy(struct dev_context *devc) {
+ (devc);
+ return SR_ERR_NA;
+}
+
+SR_PRIV const struct beaglelogic_ops beaglelogic_tcp_ops = {
+ .open = beaglelogic_open,
+ .close = beaglelogic_close,
+ .get_buffersize = beaglelogic_get_buffersize,
+ .set_buffersize = beaglelogic_set_buffersize,
+ .get_samplerate = beaglelogic_get_samplerate,
+ .set_samplerate = beaglelogic_set_samplerate,
+ .get_sampleunit = beaglelogic_get_sampleunit,
+ .set_sampleunit = beaglelogic_set_sampleunit,
+ .get_triggerflags = beaglelogic_get_triggerflags,
+ .set_triggerflags = beaglelogic_set_triggerflags,
+ .start = beaglelogic_start,
+ .stop = beaglelogic_stop,
+ .get_lasterror = beaglelogic_get_lasterror,
+ .get_bufunitsize = beaglelogic_get_bufunitsize,
+ .set_bufunitsize = beaglelogic_set_bufunitsize,
+ .mmap = dummy,
+ .munmap = dummy,
+};
projects / libsigrok.git / blobdiff