/*
- * This file is part of the sigrok project.
+ * This file is part of the libsigrok project.
*
* Copyright (C) 2011-2012 Uwe Hermann <uwe@hermann-uwe.de>
*
SR_PRIV struct sr_dev_driver chronovu_la8_driver_info;
static struct sr_dev_driver *di = &chronovu_la8_driver_info;
+/*
+ * This will be initialized via config_list()/SR_CONF_SAMPLERATE.
+ *
+ * Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz
+ * Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz
+ */
+SR_PRIV uint64_t chronovu_la8_samplerates[255] = { 0 };
+
+/* Note: Continuous sampling is not supported by the hardware. */
+SR_PRIV const int32_t chronovu_la8_hwcaps[] = {
+ SR_CONF_LOGIC_ANALYZER,
+ SR_CONF_SAMPLERATE,
+ SR_CONF_LIMIT_MSEC, /* TODO: Not yet implemented. */
+ SR_CONF_LIMIT_SAMPLES, /* TODO: Not yet implemented. */
+};
+
/*
* The ChronoVu LA8 can have multiple PIDs. Older versions shipped with
* a standard FTDI USB VID/PID of 0403:6001, newer ones have 0403:8867.
};
/* Function prototypes. */
-static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
+static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
-static int clear_instances(void)
+static void clear_helper(void *priv)
{
- GSList *l;
- struct sr_dev_inst *sdi;
- struct drv_context *drvc;
struct dev_context *devc;
+
+ devc = priv;
- drvc = di->priv;
-
- /* Properly close all devices. */
- for (l = drvc->instances; l; l = l->next) {
- if (!(sdi = l->data)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("%s: sdi was NULL, continuing.", __func__);
- continue;
- }
- if (sdi->priv) {
- devc = sdi->priv;
- ftdi_free(devc->ftdic);
- }
- sr_dev_inst_free(sdi);
- }
- g_slist_free(drvc->instances);
- drvc->instances = NULL;
-
- return SR_OK;
+ ftdi_free(devc->ftdic);
+ g_free(devc->final_buf);
}
-static int hw_init(struct sr_context *sr_ctx)
+static int clear_instances(void)
{
- struct drv_context *drvc;
-
- if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
- sr_err("Driver context malloc failed.");
- return SR_ERR_MALLOC;
- }
-
- drvc->sr_ctx = sr_ctx;
- di->priv = drvc;
+ return std_dev_clear(di, clear_helper);
+}
- return SR_OK;
+static int init(struct sr_context *sr_ctx)
+{
+ return std_init(sr_ctx, di, LOG_PREFIX);
}
-static GSList *hw_scan(GSList *options)
+static GSList *scan(GSList *options)
{
struct sr_dev_inst *sdi;
struct sr_probe *probe;
(void)options;
drvc = di->priv;
+
devices = NULL;
/* Allocate memory for our private device context. */
devc->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */
devc->limit_msec = 0;
devc->limit_samples = 0;
- devc->session_dev_id = NULL;
+ devc->cb_data = NULL;
memset(devc->mangled_buf, 0, BS);
devc->final_buf = NULL;
devc->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */
sdi->driver = di;
sdi->priv = devc;
- for (i = 0; probe_names[i]; i++) {
+ for (i = 0; chronovu_la8_probe_names[i]; i++) {
if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE,
- probe_names[i])))
+ chronovu_la8_probe_names[i])))
return NULL;
sdi->probes = g_slist_append(sdi->probes, probe);
}
devices = g_slist_append(devices, sdi);
drvc->instances = g_slist_append(drvc->instances, sdi);
- sr_spew("Device init successful.");
-
/* Close device. We'll reopen it again when we need it. */
(void) la8_close(devc); /* Log, but ignore errors. */
return NULL;
}
-static GSList *hw_dev_list(void)
+static GSList *dev_list(void)
{
- struct drv_context *drvc;
-
- drvc = di->priv;
-
- return drvc->instances;
+ return ((struct drv_context *)(di->priv))->instances;
}
-static int hw_dev_open(struct sr_dev_inst *sdi)
+static int dev_open(struct sr_dev_inst *sdi)
{
struct dev_context *devc;
int ret;
return SR_ERR;
}
-static int hw_dev_close(struct sr_dev_inst *sdi)
+static int dev_close(struct sr_dev_inst *sdi)
{
struct dev_context *devc;
- if (!(devc = sdi->priv)) {
- sr_err("%s: sdi->priv was NULL.", __func__);
- return SR_ERR_BUG;
- }
-
- sr_dbg("Closing device.");
+ devc = sdi->priv;
if (sdi->status == SR_ST_ACTIVE) {
sr_dbg("Status ACTIVE, closing device.");
sdi->status = SR_ST_INACTIVE;
- sr_dbg("Freeing sample buffer.");
- g_free(devc->final_buf);
-
return SR_OK;
}
-static int hw_cleanup(void)
+static int cleanup(void)
{
- if (!di->priv)
- /* Can get called on an unused driver, doesn't matter. */
- return SR_OK;
-
- clear_instances();
-
- return SR_OK;
+ return clear_instances();
}
-static int hw_info_get(int info_id, const void **data,
- const struct sr_dev_inst *sdi)
+static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
- switch (info_id) {
- case SR_DI_HWCAPS:
- *data = hwcaps;
- break;
- case SR_DI_SAMPLERATES:
- fill_supported_samplerates_if_needed();
- *data = &samplerates;
- sr_spew("%s: Returning samplerates.", __func__);
- break;
- case SR_DI_TRIGGER_TYPES:
- *data = (char *)TRIGGER_TYPES;
- sr_spew("%s: Returning trigger types: %s.", __func__,
- TRIGGER_TYPES);
- break;
- case SR_DI_CUR_SAMPLERATE:
+ switch (id) {
+ case SR_CONF_SAMPLERATE:
if (sdi) {
devc = sdi->priv;
- *data = &devc->cur_samplerate;
+ *data = g_variant_new_uint64(devc->cur_samplerate);
sr_spew("%s: Returning samplerate: %" PRIu64 "Hz.",
__func__, devc->cur_samplerate);
} else
return SR_ERR;
break;
default:
- return SR_ERR_ARG;
+ return SR_ERR_NA;
}
return SR_OK;
}
-static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
- const void *value)
+static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR_DEV_CLOSED;
+
if (!(devc = sdi->priv)) {
sr_err("%s: sdi->priv was NULL.", __func__);
return SR_ERR_BUG;
}
- switch (hwcap) {
+ switch (id) {
case SR_CONF_SAMPLERATE:
- if (set_samplerate(sdi, *(const uint64_t *)value) == SR_ERR) {
+ if (set_samplerate(sdi, g_variant_get_uint64(data)) == SR_ERR) {
sr_err("%s: setting samplerate failed.", __func__);
return SR_ERR;
}
sr_dbg("SAMPLERATE = %" PRIu64, devc->cur_samplerate);
break;
case SR_CONF_LIMIT_MSEC:
- if (*(const uint64_t *)value == 0) {
+ if (g_variant_get_uint64(data) == 0) {
sr_err("%s: LIMIT_MSEC can't be 0.", __func__);
return SR_ERR;
}
- devc->limit_msec = *(const uint64_t *)value;
+ devc->limit_msec = g_variant_get_uint64(data);
sr_dbg("LIMIT_MSEC = %" PRIu64, devc->limit_msec);
break;
case SR_CONF_LIMIT_SAMPLES:
- if (*(const uint64_t *)value < MIN_NUM_SAMPLES) {
+ if (g_variant_get_uint64(data) < MIN_NUM_SAMPLES) {
sr_err("%s: LIMIT_SAMPLES too small.", __func__);
return SR_ERR;
}
- devc->limit_samples = *(const uint64_t *)value;
+ devc->limit_samples = g_variant_get_uint64(data);
sr_dbg("LIMIT_SAMPLES = %" PRIu64, devc->limit_samples);
break;
default:
- /* Unknown capability, return SR_ERR. */
- sr_err("%s: Unknown capability: %d.", __func__, hwcap);
- return SR_ERR;
+ return SR_ERR_NA;
+ }
+
+ return SR_OK;
+}
+
+static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
+{
+ GVariant *gvar;
+ GVariantBuilder gvb;
+
+ (void)sdi;
+
+ switch (key) {
+ case SR_CONF_DEVICE_OPTIONS:
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ chronovu_la8_hwcaps,
+ ARRAY_SIZE(chronovu_la8_hwcaps),
+ sizeof(int32_t));
break;
+ case SR_CONF_SAMPLERATE:
+ fill_supported_samplerates_if_needed();
+ g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
+ gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
+ chronovu_la8_samplerates,
+ ARRAY_SIZE(chronovu_la8_samplerates),
+ sizeof(uint64_t));
+ g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
+ *data = g_variant_builder_end(&gvb);
+ break;
+ case SR_CONF_TRIGGER_TYPE:
+ *data = g_variant_new_string(TRIGGER_TYPE);
+ break;
+ default:
+ return SR_ERR_NA;
}
return SR_OK;
/* Get one block of data. */
if ((ret = la8_read_block(devc)) < 0) {
sr_err("%s: la8_read_block error: %d.", __func__, ret);
- hw_dev_acquisition_stop(sdi, sdi);
+ dev_acquisition_stop(sdi, sdi);
return FALSE;
}
for (i = 0; i < NUM_BLOCKS; i++)
send_block_to_session_bus(devc, i);
- hw_dev_acquisition_stop(sdi, sdi);
+ dev_acquisition_stop(sdi, sdi);
return TRUE;
}
-static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
- void *cb_data)
+static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
struct dev_context *devc;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_header header;
uint8_t buf[4];
int bytes_written;
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR_DEV_CLOSED;
+
if (!(devc = sdi->priv)) {
sr_err("%s: sdi->priv was NULL.", __func__);
return SR_ERR_BUG;
return SR_ERR;
}
- sr_dbg("Starting acquisition.");
-
/* Fill acquisition parameters into buf[]. */
buf[0] = devc->divcount;
buf[1] = 0xff; /* This byte must always be 0xff. */
return SR_ERR;
}
- sr_dbg("Acquisition started successfully.");
+ sr_dbg("Hardware acquisition started successfully.");
- devc->session_dev_id = cb_data;
+ devc->cb_data = cb_data;
/* Send header packet to the session bus. */
- sr_dbg("Sending SR_DF_HEADER.");
- packet.type = SR_DF_HEADER;
- packet.payload = &header;
- header.feed_version = 1;
- gettimeofday(&header.starttime, NULL);
- sr_session_send(devc->session_dev_id, &packet);
+ std_session_send_df_header(cb_data, LOG_PREFIX);
/* Time when we should be done (for detecting trigger timeouts). */
devc->done = (devc->divcount + 1) * 0.08388608 + time(NULL)
return SR_OK;
}
-static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
+static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
struct sr_datafeed_packet packet;
.name = "chronovu-la8",
.longname = "ChronoVu LA8",
.api_version = 1,
- .init = hw_init,
- .cleanup = hw_cleanup,
- .scan = hw_scan,
- .dev_list = hw_dev_list,
+ .init = init,
+ .cleanup = cleanup,
+ .scan = scan,
+ .dev_list = dev_list,
.dev_clear = clear_instances,
- .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,
+ .config_get = config_get,
+ .config_set = config_set,
+ .config_list = config_list,
+ .dev_open = dev_open,
+ .dev_close = dev_close,
+ .dev_acquisition_start = dev_acquisition_start,
+ .dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL,
};
projects / libsigrok.git / blobdiff