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sr: zeroplus: Fix segfault, add debug output. 

There are various ZEROPLUS models with different probe numbers. For now
hardcode to 16 (for the popular LAP-C(16032)). This will need to be
fixed in a dynamic way later.

This fixes a segfault due to only 16 probe-names being defined, but the
drivers returning 32 as probecount.

Also, add some additional debug output.
This commit is contained in:
Uwe Hermann 2012-04-26 23:18:05 +02:00
parent 993526f824
commit 6752905e6b
1 changed files with 15 additions and 2 deletions
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17
hardware/zeroplus-logic-cube/zeroplus.c
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@ -34,6 +34,7 @@
#define USB_MODEL_NAME "Logic Cube"
#define USB_MODEL_VERSION ""
#define NUM_PROBES 16
#define USB_INTERFACE 0
#define USB_CONFIGURATION 1
#define NUM_TRIGGER_STAGES 4
@ -78,7 +79,7 @@ static int hwcaps[] = {
* ZEROPLUS LAP-C (16032) numbers the 16 probes A0-A7 and B0-B7.
* We currently ignore other untested/unsupported devices here.
*/
static const char *probe_names[] = {
static const char *probe_names[NUM_PROBES + 1] = {
"A0",
"A1",
"A2",
@ -345,7 +346,8 @@ static int hw_init(const char *devinfo)
/* Set some sane defaults. */
ctx->cur_samplerate = 0;
ctx->limit_samples = 0;
ctx->num_channels = 32; /* TODO: This isn't initialized before it's needed :( */
/* TODO: num_channels isn't initialized before it's needed :( */
ctx->num_channels = NUM_PROBES;
ctx->memory_size = 0;
ctx->probe_mask = 0;
memset(ctx->trigger_mask, 0, NUM_TRIGGER_STAGES);
@ -512,24 +514,35 @@ static void *hw_dev_info_get(int dev_index, int dev_info_id)
return NULL;
}
sr_spew("zp: %s: dev_index %d, dev_info_id %d.", __func__,
dev_index, dev_info_id);
switch (dev_info_id) {
case SR_DI_INST:
info = sdi;
sr_spew("zp: %s: Returning sdi.", __func__);
break;
case SR_DI_NUM_PROBES:
info = GINT_TO_POINTER(ctx->num_channels);
sr_spew("zp: %s: Returning number of probes: %d.", __func__,
NUM_PROBES);
break;
case SR_DI_PROBE_NAMES:
info = probe_names;
sr_spew("zp: %s: Returning probenames.", __func__);
break;
case SR_DI_SAMPLERATES:
info = &samplerates;
sr_spew("zp: %s: Returning samplerates.", __func__);
break;
case SR_DI_TRIGGER_TYPES:
info = TRIGGER_TYPES;
sr_spew("zp: %s: Returning triggertypes: %s.", __func__, info);
break;
case SR_DI_CUR_SAMPLERATE:
info = &ctx->cur_samplerate;
sr_spew("zp: %s: Returning samplerate: %" PRIu64 "Hz.",
__func__, ctx->cur_samplerate);
break;
default:
/* Unknown device info ID, return NULL. */