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hung-chang-dso-2100: properly set encoding digits

This commit is contained in:
Aurelien Jacobs 2016-08-24 01:18:58 +02:00 committed by Uwe Hermann
parent ad4c0275c2
commit 545101338a
1 changed files with 5 additions and 1 deletions
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6
src/hardware/hung-chang-dso-2100/protocol.c
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@ -18,6 +18,7 @@
*/
#include <config.h>
#include <math.h>
#include <ieee1284.h>
#include "protocol.h"
@ -344,7 +345,10 @@ static void push_samples(const struct sr_dev_inst *sdi, uint8_t *buf, size_t num
while (num--)
data[num] = (buf[num] - 0x80) * factor;
sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
float vdivlog = log10f(factor);
int digits = -(int)vdivlog + (vdivlog < 0.0);
sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
analog.meaning->channels = devc->enabled_channel;
analog.meaning->mq = SR_MQ_VOLTAGE;
analog.meaning->unit = SR_UNIT_VOLT;