solar power calculations work now

git-svn-id: https://svn.spreadspace.org/mur.sat@231 7de4ea59-55d0-425e-a1af-a3118ea81d4c

1 files changed, 17 insertions, 9 deletions

diff --git a/tools/solarmeter/solarmeter.c b/tools/solarmeter/solarmeter.c
index 1ddca80..9aace5b 100644
--- a/tools/solarmeter/solarmeter.c
+++ b/tools/solarmeter/solarmeter.c
@@ -11,7 +11,7 @@ int main (int argc, char* argv[])
 {
   u_int8_t tmp = 0;
   u_int8_t buffer[12];
-  u_int16_t power = 0;
+  u_int32_t power[2];
 
   int infile_fd = -1;  
   if (argc > 1) {
@@ -26,22 +26,30 @@ int main (int argc, char* argv[])
   
   while (read(infile_fd, &tmp, 1) == 1) {
     if (tmp == 255) {
-      if (read(infile_fd, &buffer, sizeof(buffer)) != sizeof(buffer)) {
-        perror("read error:");
+      int ret = read(infile_fd, &buffer, sizeof(buffer));
+      if(ret < 0) {
+        perror("read error");
         return 2;
+      } else if(!ret) {
+        return 0;
+      } else if(ret != sizeof(buffer)) {
+        continue;
       }
 
-      power = (buffer[10]<<8) + buffer[11];
-      printf("%5d (", power);
+      power[0] = (buffer[10]<<8) + buffer[11];
+      printf("%5d (", power[0]);
 
       int i;
       for(i=0; i<10; i++)
         printf("%3d ", buffer[i]);
 
-      power = (((u_int16_t)buffer[0] + (u_int16_t)buffer[1] + (u_int16_t)buffer[2] + (u_int16_t)buffer[3]) * (u_int16_t)buffer[4]) +
-              (((u_int16_t)buffer[5] + (u_int16_t)buffer[6] + (u_int16_t)buffer[7] + (u_int16_t)buffer[8]) * (u_int16_t)buffer[9]);
-
-      printf(")  -> %5d\r", power);
+      power[1] = (((u_int16_t)buffer[0] + (u_int16_t)buffer[1] + (u_int16_t)buffer[2] + (u_int16_t)buffer[3]) * (u_int32_t)buffer[4]) +
+              (((u_int16_t)buffer[5] + (u_int16_t)buffer[6] + (u_int16_t)buffer[7] + (u_int16_t)buffer[8]) * (u_int32_t)buffer[9]);
+      int tmp = 0;
+      if(power[1]%128 >= 64) tmp=1;
+      power[1] /= 128;
+      power[1] += tmp;
+      printf(")  -> %s (%5d) \n", power[1] == power[0] ? "ok" : "xx", power[1]);
     }
   }
   printf("\n");