* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* UNI-T UT372 protocol parser.
*/
+#include <config.h>
#include <stdlib.h>
#include <stdint.h>
#include <math.h>
SR_PRIV int sr_ut372_parse(const uint8_t *buf, float *floatval,
struct sr_datafeed_analog *analog, void *info)
{
- unsigned int i, j, value, divisor;
+ unsigned int i, j, value;
uint8_t segments, flags1, flags2;
+ int exponent;
(void) info;
flags2 = decode_pair(buf + 23);
if (flags2 & FLAGS2_RPM_MASK) {
- analog->mq = SR_MQ_FREQUENCY;
- analog->unit = SR_UNIT_REVOLUTIONS_PER_MINUTE;
+ analog->meaning->mq = SR_MQ_FREQUENCY;
+ analog->meaning->unit = SR_UNIT_REVOLUTIONS_PER_MINUTE;
} else if (flags2 & FLAGS2_COUNT_MASK) {
- analog->mq = SR_MQ_COUNT;
- analog->unit = SR_UNIT_UNITLESS;
+ analog->meaning->mq = SR_MQ_COUNT;
+ analog->meaning->unit = SR_UNIT_UNITLESS;
}
if (flags1 & FLAGS1_HOLD_MASK)
- analog->mqflags |= SR_MQFLAG_HOLD;
+ analog->meaning->mqflags |= SR_MQFLAG_HOLD;
if (flags2 & FLAGS2_MIN_MASK)
- analog->mqflags |= SR_MQFLAG_MIN;
+ analog->meaning->mqflags |= SR_MQFLAG_MIN;
if (flags2 & FLAGS2_MAX_MASK)
- analog->mqflags |= SR_MQFLAG_MAX;
+ analog->meaning->mqflags |= SR_MQFLAG_MAX;
if (flags2 & FLAGS2_AVG_MASK)
- analog->mqflags |= SR_MQFLAG_AVG;
+ analog->meaning->mqflags |= SR_MQFLAG_AVG;
value = 0;
- divisor = 1;
+ exponent = 0;
for (i = 0; i < 5; i++) {
segments = decode_pair(buf + 1 + (2 * i));
}
}
if (segments & DECIMAL_POINT_MASK)
- divisor = pow(10, i);
+ exponent = -i;
}
- *floatval = (float) value / divisor;
+ *floatval = (float) value * powf(10, exponent);
+
+ analog->encoding->digits = -exponent;
+ analog->spec->spec_digits = -exponent;
return SR_OK;
}