Fix parsing systolic pressure

There is another field between the time and the systolic pressure, it is
still not 100% clear what it means, it could be an indicator for
arrhythmia.

diff --git a/README b/README
index 07c9332..9cc74be 100644 (file)
--- a/README
+++ b/README
@@ -46,23 +46,25 @@ The structure can be better visualized when split in fields:
   06 # number of records in this memory block
 
   # Each records stores date, time, systolic and diastolic pressure, pulses
+  # Maybe the third field is an indication of arrhythmia?
+  # Or a flag to mark test or out of scale measurements?
 
-  # yymmdd HHMM systolic diastolic pulses
-    100101 1202     1151       102    120
-    100101 1208     1156       107    116
-    100101 1203     0103       065    073
-    440601 1320     0113       068    066
-    100101 1311     0127       084    066
-    100101 1203     0106       068    066
+  # yymmdd HHMM ? systolic diastolic pulses
+    100101 1202 1      151       102    120
+    100101 1208 1      156       107    116
+    100101 1203 0      103       065    073
+    440601 1320 0      113       068    066
+    100101 1311 0      127       084    066
+    100101 1203 0      106       068    066
 
   # Same structure for the other memory block
   M
   2
   07
-  100101 1203 1155 111 116
-  100101 1202 0117 070 076
-  440601 1312 0128 071 072
-  440601 1317 0126 050 065
-  440601 1319 0114 063 066
-  100101 1400 0114 070 071
-  130312 1145 0121 080 072
+  100101 1203 1 155 111 116
+  100101 1202 0 117 070 076
+  440601 1312 0 128 071 072
+  440601 1317 0 126 050 065
+  440601 1319 0 114 063 066
+  100101 1400 0 114 070 071
+  130312 1145 0 121 080 072

diff --git a/src/visomat-data-downloader.c b/src/visomat-data-downloader.c
index 08a752a..d925388 100644 (file)
--- a/src/visomat-data-downloader.c
+++ b/src/visomat-data-downloader.c
@@ -63,6 +63,7 @@ struct datetime  {
 };
 
 struct pressure  {
+       unsigned int flag; /* XXX Maybe this means arrhythmia? */
        unsigned int systolic;
        unsigned int diastolic;
        unsigned int pulses;
@@ -102,10 +103,16 @@ static void print_record_csv_compat(struct datetime *d, struct pressure *p)
        pulse_pressure = p->systolic - p->diastolic;
        printf("%u;", pulse_pressure);
 
+       if (p->flag)
+               printf("x");
+
+#if 0
+       /* The original software does not seem to be doing that */
        if (p->pulses > 100)
                printf("tachycardia");
        else if (p->pulses < 60)
                printf("bradycardia");
+#endif
 
        printf("\n");
 }
@@ -157,11 +164,12 @@ static int decode_eeprom(unsigned char *buffer, unsigned int len)
                                i += 10;
 
                                ret = sscanf((char *)(buffer + i),
-                                            "%04u%03u%03u",
+                                            "%1u%03u%03u%03u",
+                                            &p.flag,
                                             &p.systolic,
                                             &p.diastolic,
                                             &p.pulses);
-                               if (ret != 3)
+                               if (ret != 4)
                                        return -EINVAL;
 
                                /* pressure data is 10 bytes */