Fix floats printing as ints

lib/libscpi/scpi/config.h

@@ -61,8 +61,8 @@ extern "C" {
  * Detect, if it has limited resources or it is running on a full blown operating system.
  * All values can be overiden by scpi_user_config.h
  */
-#define SYSTEM_BARE_METAL 0
-#define SYSTEM_FULL_BLOWN 1
+#define SYSTEM_BARE_METAL 1
+#define SYSTEM_FULL_BLOWN 0
 
 /* This should cover all windows compilers (msvc, mingw, cvi) and all Linux/OSX/BSD and other UNIX compatible systems (gcc, clang) */
 #if defined(_WIN32) || defined(_WIN64) || defined(__unix) || defined(__unix__) || defined(__APPLE__)
@@ -115,7 +115,7 @@ extern "C" {
 #endif
 
 #ifndef USE_CUSTOM_DTOSTRE
-#define USE_CUSTOM_DTOSTRE 0
+#define USE_CUSTOM_DTOSTRE 1
 #endif
 
 #ifndef USE_UNITS_IMPERIAL

threads/comm.c

@@ -54,9 +54,9 @@ static scpi_result_t scpi_measure_voltage(scpi_t * context) {
     if (!SCPI_ParamChoice(context, trigger_source, &param, TRUE)) {
       return SCPI_RES_ERR;
     }
-    float reading = (float) chMsgSend(chRegFindThreadByName("sensors"), (msg_t)param);
+    float *reading = (float *) chMsgSend(chRegFindThreadByName("sensors"), (msg_t)param);
 
-    SCPI_ResultDouble(context, reading);
+    SCPI_ResultDouble(context, *reading);
     
     return SCPI_RES_OK;
 }

threads/sensors.c

@@ -69,6 +69,6 @@ THD_FUNCTION(Sensors, arg) {
     float volts = ads1115ReadMillivolts(&ADS1115, 0); 
     sprintf(buf, "Volts: %d.%d", (int)volts, (int) ((volts - ((int) volts)) * 100));
     (void)chMsgSend(chRegFindThreadByName("display"), (msg_t)buf);
-    chMsgRelease(tp, (msg_t) volts);
+    chMsgRelease(tp, (msg_t) &volts);
   }
 }