PATTERN_ALL_HIGH,
};
-/* FIXME: Should not be global. */
-
-struct context {
+/* Private, per-device-instance driver context. */
+struct dev_context {
int pipe_fds[2];
GIOChannel *channels[2];
uint8_t sample_generator;
static int hw_init(void)
{
+ struct drv_context *drvc;
- /* Nothing to do. */
+ if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
+ sr_err("demo: driver context malloc failed.");
+ return SR_ERR_MALLOC;
+ }
+ ddi->priv = drvc;
return SR_OK;
}
{
struct sr_dev_inst *sdi;
struct sr_probe *probe;
+ struct drv_context *drvc;
GSList *devices;
int i;
(void)options;
+ drvc = ddi->priv;
devices = NULL;
sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL);
}
devices = g_slist_append(devices, sdi);
- ddi->instances = g_slist_append(ddi->instances, sdi);
+ drvc->instances = g_slist_append(drvc->instances, sdi);
return devices;
}
+static GSList *hw_dev_list(void)
+{
+ struct drv_context *drvc;
+
+ drvc = ddi->priv;
+
+ return drvc->instances;
+}
+
static int hw_dev_open(struct sr_dev_inst *sdi)
{
/* Avoid compiler warnings. */
(void)sdi;
- if (hwcap == SR_HWCAP_PROBECONFIG) {
- /* Nothing to do, but must be supported */
- ret = SR_OK;
- } else if (hwcap == SR_HWCAP_SAMPLERATE) {
+ if (hwcap == SR_HWCAP_SAMPLERATE) {
cur_samplerate = *(const uint64_t *)value;
sr_dbg("demo: %s: setting samplerate to %" PRIu64, __func__,
cur_samplerate);
static void samples_generator(uint8_t *buf, uint64_t size, void *data)
{
static uint64_t p = 0;
- struct context *ctx = data;
+ struct dev_context *devc = data;
uint64_t i;
/* TODO: Needed? */
memset(buf, 0, size);
- switch (ctx->sample_generator) {
+ switch (devc->sample_generator) {
case PATTERN_SIGROK: /* sigrok pattern */
for (i = 0; i < size; i++) {
*(buf + i) = ~(pattern_sigrok[p] >> 1);
break;
default:
sr_err("demo: %s: unknown pattern %d", __func__,
- ctx->sample_generator);
+ devc->sample_generator);
break;
}
}
/* Thread function */
static void thread_func(void *data)
{
- struct context *ctx = data;
+ struct dev_context *devc = data;
uint8_t buf[BUFSIZE];
uint64_t nb_to_send = 0;
int bytes_written;
double time_cur, time_last, time_diff;
- time_last = g_timer_elapsed(ctx->timer, NULL);
+ time_last = g_timer_elapsed(devc->timer, NULL);
while (thread_running) {
/* Rate control */
- time_cur = g_timer_elapsed(ctx->timer, NULL);
+ time_cur = g_timer_elapsed(devc->timer, NULL);
time_diff = time_cur - time_last;
time_last = time_cur;
if (limit_samples) {
nb_to_send = MIN(nb_to_send,
- limit_samples - ctx->samples_counter);
+ limit_samples - devc->samples_counter);
}
/* Make sure we don't overflow. */
if (nb_to_send) {
samples_generator(buf, nb_to_send, data);
- ctx->samples_counter += nb_to_send;
+ devc->samples_counter += nb_to_send;
- g_io_channel_write_chars(ctx->channels[1], (gchar *)&buf,
+ g_io_channel_write_chars(devc->channels[1], (gchar *)&buf,
nb_to_send, (gsize *)&bytes_written, NULL);
}
/* Check if we're done. */
if ((limit_msec && time_cur * 1000 > limit_msec) ||
- (limit_samples && ctx->samples_counter >= limit_samples))
+ (limit_samples && devc->samples_counter >= limit_samples))
{
- close(ctx->pipe_fds[1]);
+ close(devc->pipe_fds[1]);
thread_running = 0;
}
/* Callback handling data */
static int receive_data(int fd, int revents, void *cb_data)
{
- struct context *ctx = cb_data;
+ struct dev_context *devc = cb_data;
struct sr_datafeed_packet packet;
struct sr_datafeed_logic logic;
static uint64_t samples_received = 0;
(void)revents;
do {
- g_io_channel_read_chars(ctx->channels[0],
+ g_io_channel_read_chars(devc->channels[0],
(gchar *)&c, BUFSIZE, &z, NULL);
if (z > 0) {
logic.length = z;
logic.unitsize = 1;
logic.data = c;
- sr_session_send(ctx->session_dev_id, &packet);
+ sr_session_send(devc->session_dev_id, &packet);
samples_received += z;
}
} while (z > 0);
if (!thread_running && z <= 0) {
/* Make sure we don't receive more packets. */
- g_io_channel_shutdown(ctx->channels[0], FALSE, NULL);
+ g_io_channel_shutdown(devc->channels[0], FALSE, NULL);
/* Send last packet. */
packet.type = SR_DF_END;
- sr_session_send(ctx->session_dev_id, &packet);
+ sr_session_send(devc->session_dev_id, &packet);
return FALSE;
}
struct sr_datafeed_packet *packet;
struct sr_datafeed_header *header;
struct sr_datafeed_meta_logic meta;
- struct context *ctx;
+ struct dev_context *devc;
(void)sdi;
- /* TODO: 'ctx' is never g_free()'d? */
- if (!(ctx = g_try_malloc(sizeof(struct context)))) {
- sr_err("demo: %s: ctx malloc failed", __func__);
+ /* TODO: 'devc' is never g_free()'d? */
+ if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
+ sr_err("demo: %s: devc malloc failed", __func__);
return SR_ERR_MALLOC;
}
- ctx->sample_generator = default_pattern;
- ctx->session_dev_id = cb_data;
- ctx->samples_counter = 0;
+ devc->sample_generator = default_pattern;
+ devc->session_dev_id = cb_data;
+ devc->samples_counter = 0;
- if (pipe(ctx->pipe_fds)) {
+ if (pipe(devc->pipe_fds)) {
/* TODO: Better error message. */
sr_err("demo: %s: pipe() failed", __func__);
return SR_ERR;
}
- ctx->channels[0] = g_io_channel_unix_new(ctx->pipe_fds[0]);
- ctx->channels[1] = g_io_channel_unix_new(ctx->pipe_fds[1]);
+ devc->channels[0] = g_io_channel_unix_new(devc->pipe_fds[0]);
+ devc->channels[1] = g_io_channel_unix_new(devc->pipe_fds[1]);
- g_io_channel_set_flags(ctx->channels[0], G_IO_FLAG_NONBLOCK, NULL);
+ g_io_channel_set_flags(devc->channels[0], G_IO_FLAG_NONBLOCK, NULL);
/* Set channel encoding to binary (default is UTF-8). */
- g_io_channel_set_encoding(ctx->channels[0], NULL, NULL);
- g_io_channel_set_encoding(ctx->channels[1], NULL, NULL);
+ g_io_channel_set_encoding(devc->channels[0], NULL, NULL);
+ g_io_channel_set_encoding(devc->channels[1], NULL, NULL);
/* Make channels to unbuffered. */
- g_io_channel_set_buffered(ctx->channels[0], FALSE);
- g_io_channel_set_buffered(ctx->channels[1], FALSE);
+ g_io_channel_set_buffered(devc->channels[0], FALSE);
+ g_io_channel_set_buffered(devc->channels[1], FALSE);
- sr_session_source_add_channel(ctx->channels[0], G_IO_IN | G_IO_ERR,
- 40, receive_data, ctx);
+ sr_session_source_add_channel(devc->channels[0], G_IO_IN | G_IO_ERR,
+ 40, receive_data, devc);
/* Run the demo thread. */
- g_thread_init(NULL);
- /* This must to be done between g_thread_init() & g_thread_create(). */
- ctx->timer = g_timer_new();
+ devc->timer = g_timer_new();
thread_running = 1;
- my_thread =
- g_thread_create((GThreadFunc)thread_func, ctx, TRUE, NULL);
+ my_thread = g_thread_try_new("sigrok demo generator",
+ (GThreadFunc)thread_func, devc, NULL);
if (!my_thread) {
- sr_err("demo: %s: g_thread_create failed", __func__);
+ sr_err("demo: %s: g_thread_try_new failed", __func__);
return SR_ERR; /* TODO */
}
packet->payload = header;
header->feed_version = 1;
gettimeofday(&header->starttime, NULL);
- sr_session_send(ctx->session_dev_id, packet);
+ sr_session_send(devc->session_dev_id, packet);
/* Send metadata about the SR_DF_LOGIC packets to come. */
packet->type = SR_DF_META_LOGIC;
packet->payload = &meta;
meta.samplerate = cur_samplerate;
meta.num_probes = NUM_PROBES;
- sr_session_send(ctx->session_dev_id, packet);
+ sr_session_send(devc->session_dev_id, packet);
g_free(header);
g_free(packet);
static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi,
void *cb_data)
{
+ struct dev_context *devc;
+
/* Avoid compiler warnings. */
- (void)sdi;
(void)cb_data;
+ devc = sdi->priv;
+
/* Stop generate thread. */
thread_running = 0;
+ sr_session_source_remove_channel(devc->channels[0]);
+
return SR_OK;
}
.init = hw_init,
.cleanup = hw_cleanup,
.scan = hw_scan,
+ .dev_list = hw_dev_list,
.dev_open = hw_dev_open,
.dev_close = hw_dev_close,
.info_get = hw_info_get,
.dev_config_set = hw_dev_config_set,
.dev_acquisition_start = hw_dev_acquisition_start,
.dev_acquisition_stop = hw_dev_acquisition_stop,
- .instances = NULL,
+ .priv = NULL,
};
projects / libsigrok.git / blobdiff