+++ /dev/null
-/*
- * This file is part of the sigrok project.
- *
- * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
- *
- * 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 2 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, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <sigrok.h>
-#include "config.h"
-
-#define BUFSIZE 4096
-
-#define NUM_PROBES 8
-#define NUM_TRIGGER_STAGES 4
-#define TRIGGER_TYPES "01"
-
-/* Software trigger implementation: positive values indicate trigger stage. */
-#define TRIGGER_FIRED -1
-
-#define USB_MODEL_NAME "demodevice"
-#define USB_VENDOR_NAME "demovendor"
-#define USB_MODEL_VERSION "1.0"
-
-#define GENMODE_RANDOM 1
-#define GENMODE_INC 2
-
-static GThread *my_thread;
-static int thread_running;
-
-static int capabilities[] = {
- HWCAP_LOGIC_ANALYZER,
- HWCAP_SAMPLERATE,
- HWCAP_LIMIT_SAMPLES,
-};
-
-/* Random selection of samplerates this "device" shall support. */
-static uint64_t supported_samplerates[] = {
- KHZ(100),
- KHZ(500),
- MHZ(1),
- MHZ(2),
- MHZ(12),
- MHZ(24),
- 0,
-};
-
-static struct samplerates samplerates = {
- KHZ(100),
- MHZ(24),
- 0,
- supported_samplerates,
-};
-
-struct databag {
- int pipe_fds[2];
- uint8_t sample_generator;
- uint8_t thread_running;
- uint64_t samples_counter;
- int device_index;
- int loop_sleep;
- gpointer session_device_id;
-};
-
-/* List of struct sigrok_device_instance, maintained by opendev()/closedev(). */
-static GSList *device_instances = NULL;
-
-/* TODO: All of these should go in a device-specific struct. */
-static uint64_t cur_samplerate = 0;
-static uint64_t limit_samples = 0;
-// static uint8_t probe_mask = 0;
-// static uint8_t trigger_mask[NUM_TRIGGER_STAGES] = { 0 };
-// static uint8_t trigger_value[NUM_TRIGGER_STAGES] = { 0 };
-// static uint8_t trigger_buffer[NUM_TRIGGER_STAGES] = { 0 };
-
-// static int trigger_stage = TRIGGER_FIRED;
-
-static int hw_set_configuration(int device_index, int capability, void *value);
-static void hw_stop_acquisition(int device_index, gpointer session_device_id);
-
-static int hw_init(char *deviceinfo)
-{
- /* Avoid compiler warning. */
- deviceinfo = deviceinfo;
-
- struct sigrok_device_instance *sdi;
-
- sdi = sigrok_device_instance_new(0, ST_ACTIVE,
- USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION);
-
- if (!sdi)
- return 0;
- device_instances = g_slist_append(device_instances, sdi);
-
- return 1;
-}
-
-static int hw_opendev(int device_index)
-{
- /* Avoid compiler warning. */
- device_index = device_index;
-
- /* Nothing needed so far. */
- return SIGROK_OK;
-}
-
-static void hw_closedev(int device_index)
-{
- /* Avoid compiler warning. */
- device_index = device_index;
-
- /* Nothing needed so far. */
-}
-
-static void hw_cleanup(void)
-{
- /* Nothing needed so far. */
-}
-
-static void *hw_get_device_info(int device_index, int device_info_id)
-{
- struct sigrok_device_instance *sdi;
- void *info = NULL;
-
- if (!(sdi = get_sigrok_device_instance(device_instances, device_index)))
- return NULL;
-
- switch (device_info_id) {
- case DI_INSTANCE:
- info = sdi;
- break;
- case DI_NUM_PROBES:
- info = GINT_TO_POINTER(NUM_PROBES);
- break;
- case DI_SAMPLERATES:
- info = &samplerates;
- break;
- case DI_TRIGGER_TYPES:
- info = TRIGGER_TYPES;
- break;
- case DI_CUR_SAMPLERATE:
- info = &cur_samplerate;
- break;
- }
-
- return info;
-}
-
-static int hw_get_status(int device_index)
-{
- /* Avoid compiler warning. */
- device_index = device_index;
-
- return 0; /* FIXME */
-}
-
-static int *hw_get_capabilities(void)
-{
- return capabilities;
-}
-
-static int hw_set_configuration(int device_index, int capability, void *value)
-{
- int ret;
- uint64_t *tmp_u64;
-
- /* Avoid compiler warning. */
- device_index = device_index;
-
- if (capability == HWCAP_SAMPLERATE) {
- cur_samplerate = *(uint64_t *) value;
- ret = SIGROK_OK;
- } else if (capability == HWCAP_PROBECONFIG) {
- // ret = configure_probes((GSList *) value); FIXME
- ret = SIGROK_OK;
- } else if (capability == HWCAP_LIMIT_SAMPLES) {
- tmp_u64 = value;
- limit_samples = *tmp_u64;
- ret = SIGROK_OK;
- } else {
- ret = SIGROK_ERR;
- }
-
- return ret;
-}
-
-static void samples_generator(uint8_t *buf, uint64_t size, void *data)
-{
- struct databag *mydata = data;
- uint64_t i;
-
- memset(buf, 0, size);
-
- switch (mydata->sample_generator) {
- case GENMODE_RANDOM: /* Random */
- for (i = 0; i < size; i++)
- *(buf + i) = (uint8_t)(rand() & 0xff);
- break;
- case GENMODE_INC: /* Simple increment */
- for (i = 0; i < size; i++)
- *(buf + i) = i;
- break;
- }
-}
-
-/* Thread function */
-static void thread_func(void *data)
-{
- struct databag *mydata = data;
- uint8_t buf[BUFSIZE];
- uint64_t nb_to_send = 0;
-
- while (thread_running) {
- nb_to_send = limit_samples - mydata->samples_counter;
-
- if (nb_to_send == 0) {
- close(mydata->pipe_fds[1]);
- thread_running = 0;
- hw_stop_acquisition(mydata->device_index,
- mydata->session_device_id);
- } else if (nb_to_send > BUFSIZE) {
- nb_to_send = BUFSIZE;
- }
-
- samples_generator(buf, nb_to_send, data);
- mydata->samples_counter += nb_to_send;
-
- write(mydata->pipe_fds[1], &buf, nb_to_send);
- g_usleep(mydata->loop_sleep);
- }
-}
-
-/* Callback handling data */
-static int receive_data(int fd, int revents, void *user_data)
-{
- struct datafeed_packet packet;
- /* uint16_t samples[1000]; */
- char c[BUFSIZE];
- uint64_t z;
-
- /* Avoid compiler warnings. */
- revents = revents;
-
- z = read(fd, &c, BUFSIZE);
- if (z > 0) {
- packet.type = DF_LOGIC;
- packet.length = z;
- packet.unitsize = 1;
- packet.payload = c;
- session_bus(user_data, &packet);
- }
- return TRUE;
-}
-
-static int hw_start_acquisition(int device_index, gpointer session_device_id)
-{
- struct datafeed_packet *packet;
- struct datafeed_header *header;
- unsigned char *buf;
- struct databag *mydata;
-
- mydata = malloc(sizeof(struct databag));
- if (!mydata)
- return SIGROK_ERR_MALLOC;
-
- mydata->sample_generator = GENMODE_RANDOM;
- mydata->session_device_id = session_device_id;
- mydata->device_index = device_index;
- mydata->samples_counter = 0;
- mydata->loop_sleep = 100000;
-
- if (pipe(mydata->pipe_fds)) {
- fprintf(stderr, "Pipe failed.\n");
- return SIGROK_ERR_MALLOC; /* FIXME */
-
- }
- source_add(mydata->pipe_fds[0], G_IO_IN | G_IO_ERR, 40, receive_data,
- session_device_id);
-
- /* Run the demo thread. */
- g_thread_init(NULL);
- thread_running = 1;
- my_thread =
- g_thread_create((GThreadFunc)thread_func, mydata, TRUE, NULL);
- if (!my_thread) {
- fprintf(stderr, "demo: Thread creation failed.\n");
- return SIGROK_ERR_MALLOC; /* FIXME */
- }
-
- packet = malloc(sizeof(struct datafeed_packet));
- header = malloc(sizeof(struct datafeed_header));
- buf = malloc(2048);
- if (!packet || !header || !buf)
- return SIGROK_ERR_MALLOC;
-
- /* FIXME */
- memset(buf, 0x55, 2048);
-
- packet->type = DF_HEADER;
- packet->length = sizeof(struct datafeed_header);
- packet->payload = (unsigned char *)header;
- header->feed_version = 1;
- gettimeofday(&header->starttime, NULL);
- header->samplerate = cur_samplerate;
- header->protocol_id = PROTO_RAW;
- header->num_probes = NUM_PROBES;
- session_bus(session_device_id, packet);
- free(header);
- free(packet);
-
- return SIGROK_OK;
-}
-
-/* This stops acquisition on ALL devices, ignoring device_index. */
-static void hw_stop_acquisition(int device_index, gpointer session_device_id)
-{
- struct datafeed_packet packet;
-
- /* QUICK HACK */
- device_index = device_index;
-
- /* Send last packet. */
- packet.type = DF_END;
- session_bus(session_device_id, &packet);
-}
-
-struct device_plugin demo_plugin_info = {
- "demo",
- 1,
- hw_init,
- hw_cleanup,
- hw_opendev,
- hw_closedev,
- hw_get_device_info,
- hw_get_status,
- hw_get_capabilities,
- hw_set_configuration,
- hw_start_acquisition,
- hw_stop_acquisition,
-};
projects / libsigrok.git / blobdiff