#include <stdint.h>
#include <stdlib.h>
#include <string.h>
-#include "sigrok.h"
-#include "sigrok-internal.h"
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
/**
* Convert a numeric samplerate value to its "natural" string representation.
}
/**
- * TODO
+ * Convert a numeric frequency value to the "natural" string representation
+ * of its voltage value.
+ *
+ * E.g. a value of 300000 would be converted to "300mV", 2 to "2V".
*
- * @param dev TODO
- * @param triggerstring TODO
+ * @param voltage The voltage represented as a rational number, with the
+ * denominator a divisor of 1V.
*
- * @return TODO
+ * @return A g_try_malloc()ed string representation of the voltage value,
+ * or NULL upon errors. The caller is responsible to g_free() the
+ * memory.
*/
-SR_API char **sr_parse_triggerstring(struct sr_dev *dev,
+SR_API char *sr_voltage_string(struct sr_rational *voltage)
+{
+ char *o;
+ int r;
+
+ if (!(o = g_try_malloc0(30 + 1))) {
+ sr_err("strutil: %s: o malloc failed", __func__);
+ return NULL;
+ }
+
+ if (voltage->q == 1000)
+ r = snprintf(o, 30, "%" PRIu64 "mV", voltage->p);
+ else if (voltage->q == 1)
+ r = snprintf(o, 30, "%" PRIu64 "V", voltage->p);
+ else
+ r = -1;
+
+ if (r < 0) {
+ /* Something went wrong... */
+ g_free(o);
+ return NULL;
+ }
+
+ return o;
+}
+
+/**
+ * Parse a trigger specification string.
+ *
+ * @param dev The device for which the trigger specification is intended.
+ * @param triggerstring The string containing the trigger specification for
+ * one or more probes of this device. Entries for multiple probes are
+ * comma-separated. Triggers are specified in the form key=value,
+ * where the key is a probe number (or probe name) and the value is
+ * the requested trigger type. Valid trigger types currently
+ * include 'r' (rising edge), 'f' (falling edge), 'c' (any pin value
+ * change), '0' (low value), or '1' (high value).
+ * Example: "1=r,sck=f,miso=0,7=c"
+ *
+ * @return Pointer to a list of trigger types (strings), or NULL upon errors.
+ * The pointer list (if non-NULL) has as many entries as the
+ * respective device has probes (all physically available probes,
+ * not just enabled ones). Entries of the list which don't have
+ * a trigger value set in 'triggerstring' are NULL, the other entries
+ * contain the respective trigger type which is requested for the
+ * respective probe (e.g. "r", "c", and so on).
+ */
+SR_API char **sr_parse_triggerstring(const struct sr_dev_inst *sdi,
const char *triggerstring)
{
GSList *l;
struct sr_probe *probe;
int max_probes, probenum, i;
- char **tokens, **triggerlist, *trigger, *tc, *trigger_types;
+ char **tokens, **triggerlist, *trigger, *tc;
+ const char *trigger_types;
gboolean error;
- max_probes = g_slist_length(dev->probes);
+ max_probes = g_slist_length(sdi->probes);
error = FALSE;
if (!(triggerlist = g_try_malloc0(max_probes * sizeof(char *)))) {
- sr_err("session file: %s: metafile malloc failed", __func__);
+ sr_err("strutil: %s: triggerlist malloc failed", __func__);
return NULL;
}
- tokens = g_strsplit(triggerstring, ",", max_probes);
- trigger_types = dev->driver->dev_info_get(0, SR_DI_TRIGGER_TYPES);
- if (trigger_types == NULL)
+ if (sdi->driver->info_get(SR_DI_TRIGGER_TYPES,
+ (const void **)&trigger_types, sdi) != SR_OK) {
+ sr_err("strutil: %s: Device doesn't support any triggers.", __func__);
return NULL;
+ }
+ tokens = g_strsplit(triggerstring, ",", max_probes);
for (i = 0; tokens[i]; i++) {
if (tokens[i][0] < '0' || tokens[i][0] > '9') {
/* Named probe */
probenum = 0;
- for (l = dev->probes; l; l = l->next) {
+ for (l = sdi->probes; l; l = l->next) {
probe = (struct sr_probe *)l->data;
if (probe->enabled
&& !strncmp(probe->name, tokens[i],
probenum = strtol(tokens[i], NULL, 10);
}
- if (probenum < 1 || probenum > max_probes) {
- sr_err("Invalid probe.\n");
+ if (probenum < 0 || probenum >= max_probes) {
+ sr_err("strutil: Invalid probe (%d).", probenum);
error = TRUE;
break;
}
if ((trigger = strchr(tokens[i], '='))) {
for (tc = ++trigger; *tc; tc++) {
if (strchr(trigger_types, *tc) == NULL) {
- sr_err("Unsupported trigger type "
- "'%c'\n", *tc);
+ sr_err("strutil: Unsupported trigger "
+ "type '%c'.", *tc);
error = TRUE;
break;
}
}
if (!error)
- triggerlist[probenum - 1] = g_strdup(trigger);
+ triggerlist[probenum] = g_strdup(trigger);
}
}
g_strfreev(tokens);
if (!boolstr)
return FALSE;
- if (!g_strcasecmp(boolstr, "true") ||
- !g_strcasecmp(boolstr, "yes") ||
- !g_strcasecmp(boolstr, "on") ||
- !g_strcasecmp(boolstr, "1"))
+ if (!g_ascii_strncasecmp(boolstr, "true", 4) ||
+ !g_ascii_strncasecmp(boolstr, "yes", 3) ||
+ !g_ascii_strncasecmp(boolstr, "on", 2) ||
+ !g_ascii_strncasecmp(boolstr, "1", 1))
return TRUE;
return FALSE;
}
+
+SR_API int sr_parse_period(const char *periodstr, struct sr_rational *r)
+{
+ char *s;
+
+ r->p = strtoull(periodstr, &s, 10);
+ if (r->p == 0 && s == periodstr)
+ /* No digits found. */
+ return SR_ERR_ARG;
+
+ if (s && *s) {
+ while (*s == ' ')
+ s++;
+ if (!strcmp(s, "ns"))
+ r->q = 1000000000L;
+ else if (!strcmp(s, "us"))
+ r->q = 1000000;
+ else if (!strcmp(s, "ms"))
+ r->q = 1000;
+ else if (!strcmp(s, "s"))
+ r->q = 1;
+ else
+ /* Must have a time suffix. */
+ return SR_ERR_ARG;
+ }
+
+ return SR_OK;
+}
+
+
+SR_API int sr_parse_voltage(const char *voltstr, struct sr_rational *r)
+{
+ char *s;
+
+ r->p = strtoull(voltstr, &s, 10);
+ if (r->p == 0 && s == voltstr)
+ /* No digits found. */
+ return SR_ERR_ARG;
+
+ if (s && *s) {
+ while (*s == ' ')
+ s++;
+ if (!strcasecmp(s, "mv"))
+ r->q = 1000L;
+ else if (!strcasecmp(s, "v"))
+ r->q = 1;
+ else
+ /* Must have a base suffix. */
+ return SR_ERR_ARG;
+ }
+
+ return SR_OK;
+}
+
+
projects / libsigrok.git / blobdiff