#include <unistd.h>
#include <string.h>
#include <sigrok.h>
+#include <sigrok-internal.h>
#ifdef _WIN32
#include <io.h>
#include <fcntl.h>
/* size of chunks to send through the session bus */
#define BUFSIZE 4096
+/* Supported patterns which we can generate */
enum {
- GENMODE_DEFAULT,
- GENMODE_RANDOM,
- GENMODE_INC,
+ /**
+ * Pattern which spells "sigrok" using '0's (with '1's as "background")
+ * when displayed using the 'bits' output format.
+ */
+ PATTERN_SIGROK,
+
+ /**
+ * Pattern which consists of (pseudo-)random values on all probes.
+ */
+ PATTERN_RANDOM,
+
+ /**
+ * Pattern which consists of incrementing numbers.
+ * TODO: Better description.
+ */
+ PATTERN_INC,
};
/* FIXME: Should not be global. */
};
static struct sr_samplerates samplerates = {
- 1,
- GHZ(1),
- 1,
+ SR_HZ(1),
+ SR_GHZ(1),
+ SR_HZ(1),
NULL,
};
-static const char *patternmodes[] = {
+static const char *pattern_strings[] = {
"random",
"incremental",
NULL,
};
-static uint8_t genmode_default[] = {
+static uint8_t pattern_sigrok[] = {
0x4c, 0x92, 0x92, 0x92, 0x64, 0x00, 0x00, 0x00,
0x82, 0xfe, 0xfe, 0x82, 0x00, 0x00, 0x00, 0x00,
0x7c, 0x82, 0x82, 0x92, 0x74, 0x00, 0x00, 0x00,
/* List of struct sr_device_instance, maintained by opendev()/closedev(). */
static GSList *device_instances = NULL;
-static uint64_t cur_samplerate = KHZ(200);
+static uint64_t cur_samplerate = SR_KHZ(200);
static uint64_t limit_samples = 0;
static uint64_t limit_msec = 0;
-static int default_genmode = GENMODE_DEFAULT;
+static int default_pattern = PATTERN_SIGROK;
static GThread *my_thread;
static int thread_running;
device_index = device_index;
/* Nothing needed so far. */
+
return SR_OK;
}
-static void hw_closedev(int device_index)
+static int hw_closedev(int device_index)
{
/* Avoid compiler warnings. */
device_index = device_index;
/* Nothing needed so far. */
+
+ return SR_OK;
}
static void hw_cleanup(void)
info = &cur_samplerate;
break;
case SR_DI_PATTERNMODES:
- info = &patternmodes;
+ info = &pattern_strings;
break;
}
static int hw_set_configuration(int device_index, int capability, void *value)
{
int ret;
- uint64_t *tmp_u64;
char *stropt;
/* Avoid compiler warnings. */
/* Nothing to do, but must be supported */
ret = SR_OK;
} else if (capability == SR_HWCAP_SAMPLERATE) {
- tmp_u64 = value;
- cur_samplerate = *tmp_u64;
+ cur_samplerate = *(uint64_t *)value;
+ sr_dbg("demo: %s: setting samplerate to %" PRIu64, __func__,
+ cur_samplerate);
ret = SR_OK;
} else if (capability == SR_HWCAP_LIMIT_SAMPLES) {
- tmp_u64 = value;
- limit_samples = *tmp_u64;
+ limit_samples = *(uint64_t *)value;
+ sr_dbg("demo: %s: setting limit_samples to %" PRIu64, __func__,
+ limit_samples);
ret = SR_OK;
} else if (capability == SR_HWCAP_LIMIT_MSEC) {
- tmp_u64 = value;
- limit_msec = *tmp_u64;
+ limit_msec = *(uint64_t *)value;
+ sr_dbg("demo: %s: setting limit_msec to %" PRIu64, __func__,
+ limit_msec);
ret = SR_OK;
} else if (capability == SR_HWCAP_PATTERN_MODE) {
stropt = value;
if (!strcmp(stropt, "random")) {
- default_genmode = GENMODE_RANDOM;
+ default_pattern = PATTERN_RANDOM;
ret = SR_OK;
} else if (!strcmp(stropt, "incremental")) {
- default_genmode = GENMODE_INC;
+ default_pattern = PATTERN_INC;
ret = SR_OK;
} else {
ret = SR_ERR;
}
+ sr_dbg("demo: %s: setting pattern to %d", __func__,
+ default_pattern);
} else {
ret = SR_ERR;
}
memset(buf, 0, size);
switch (mydata->sample_generator) {
- case GENMODE_DEFAULT:
+ case PATTERN_SIGROK:
for (i = 0; i < size; i++) {
- *(buf + i) = ~(genmode_default[p] >> 1);
+ *(buf + i) = ~(pattern_sigrok[p] >> 1);
if (++p == 64)
p = 0;
}
break;
- case GENMODE_RANDOM: /* Random */
+ case PATTERN_RANDOM: /* Random */
for (i = 0; i < size; i++)
*(buf + i) = (uint8_t)(rand() & 0xff);
break;
- case GENMODE_INC: /* Simple increment */
+ case PATTERN_INC: /* Simple increment */
for (i = 0; i < size; i++)
*(buf + i) = i;
break;
struct sr_datafeed_header *header;
struct databag *mydata;
- mydata = malloc(sizeof(struct databag));
- if (!mydata)
+ /* TODO: 'mydata' is never g_free()'d? */
+ if (!(mydata = g_try_malloc(sizeof(struct databag)))) {
+ sr_err("demo: %s: mydata malloc failed", __func__);
return SR_ERR_MALLOC;
+ }
- mydata->sample_generator = default_genmode;
+ mydata->sample_generator = default_pattern;
mydata->session_device_id = session_device_id;
mydata->device_index = device_index;
mydata->samples_counter = 0;
if (!my_thread)
return SR_ERR;
- packet = malloc(sizeof(struct sr_datafeed_packet));
- header = malloc(sizeof(struct sr_datafeed_header));
- if (!packet || !header)
+ if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) {
+ sr_err("demo: %s: packet malloc failed", __func__);
return SR_ERR_MALLOC;
+ }
+
+ if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) {
+ sr_err("demo: %s: header malloc failed", __func__);
+ return SR_ERR_MALLOC;
+ }
packet->type = SR_DF_HEADER;
packet->length = sizeof(struct sr_datafeed_header);
header->num_logic_probes = NUM_PROBES;
header->num_analog_probes = 0;
sr_session_bus(session_device_id, packet);
- free(header);
- free(packet);
+ g_free(header);
+ g_free(packet);
return SR_OK;
}
}
struct sr_device_plugin demo_plugin_info = {
- "demo",
- "Demo driver and pattern generator",
- 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,
+ .name = "demo",
+ .longname = "Demo driver and pattern generator",
+ .api_version = 1,
+ .init = hw_init,
+ .cleanup = hw_cleanup,
+ .opendev = hw_opendev,
+ .closedev = hw_closedev,
+ .get_device_info = hw_get_device_info,
+ .get_status = hw_get_status,
+ .get_capabilities = hw_get_capabilities,
+ .set_configuration = hw_set_configuration,
+ .start_acquisition = hw_start_acquisition,
+ .stop_acquisition = hw_stop_acquisition,
};
projects / libsigrok.git / blobdiff