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demo: Set an initial mq, mq flag and digits to the analog package. 

Without a measured quantity in packet.meaning->mq the C++ binding function
sigrok::Analog::mq() throws an exception and there is no way to check if
there is any measured quantity set in the analog package.
This commit is contained in:
Frank Stettner 2019-02-20 18:58:13 +01:00 committed by Uwe Hermann
parent a0bc8afd7d
commit 8430c9b62e
1 changed files with 10 additions and 6 deletions
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16
src/hardware/demo/api.c
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@ -28,11 +28,13 @@
#include "libsigrok-internal.h"
#include "protocol.h"
#define DEFAULT_NUM_LOGIC_CHANNELS 8
#define DEFAULT_LOGIC_PATTERN PATTERN_SIGROK
#define DEFAULT_NUM_LOGIC_CHANNELS 8
#define DEFAULT_LOGIC_PATTERN PATTERN_SIGROK
#define DEFAULT_NUM_ANALOG_CHANNELS 4
#define DEFAULT_ANALOG_AMPLITUDE 10
#define DEFAULT_NUM_ANALOG_CHANNELS 4
#define DEFAULT_ANALOG_ENCODING_DIGITS 4
#define DEFAULT_ANALOG_SPEC_DIGITS 4
#define DEFAULT_ANALOG_AMPLITUDE 10
/* Note: No spaces allowed because of sigrok-cli. */
static const char *logic_pattern_str[] = {
@ -185,9 +187,11 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
ag->amplitude = DEFAULT_ANALOG_AMPLITUDE;
sr_analog_init(&ag->packet, &ag->encoding, &ag->meaning, &ag->spec, 2);
ag->packet.meaning->channels = cg->channels;
ag->packet.meaning->mq = 0;
ag->packet.meaning->mqflags = 0;
ag->packet.meaning->mq = SR_MQ_VOLTAGE;
ag->packet.meaning->mqflags = SR_MQFLAG_DC;
ag->packet.meaning->unit = SR_UNIT_VOLT;
ag->packet.encoding->digits = DEFAULT_ANALOG_ENCODING_DIGITS;
ag->packet.spec->spec_digits = DEFAULT_ANALOG_SPEC_DIGITS;
ag->packet.data = ag->pattern_data;
ag->pattern = pattern;
ag->avg_val = 0.0f;