therm Changeset - 89dc4e02c836 · protofusion repositories

Changeset - 89dc4e02c836

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Ethan Zonca - 10 years ago 2014-11-22 16:30:15
ez@ethanzonca.com

Sketchy remainder fixing for fahrenheit support

2 files changed with 10 insertions and 5 deletions:

Makefile

main.c

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Makefile

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@@ @@ -85,7 +85,7 @@ CDEFS+=-DHSE_VALUE=8000000 @@
 #EMZ Optimized:
-MCUFLAGS=-mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections
+MCUFLAGS=-mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections -mfloat-abi=soft
 # Default:  MCUFLAGS=-mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections

main.c

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@@ @@ -142,7 +142,7 @@ int main(void) @@
+}
 // Read temperature and update global temp vars
-int16_t temp = 0;
+int32_t temp = 0;
 uint8_t temp_frac = 0;
 void update_temp() {
@@ @@ -181,10 +181,15 @@ void update_temp() { @@
+        }
         if(temp_units == TEMP_UNITS_FAHRENHEIT) {
             temp *= 10; // fixed point mul by 1.8
             temp *= 18;
             temp /= 100;
             temp *= 9; // fixed point mul by 1.8
             temp /= 5;
             temp += 32;
             temp_frac *= 9;
             temp_frac /= 5;
             temp_frac += 32;
             temp += temp_frac/100; // add overflow to above
             temp_frac %= 100;
+        }
+    }

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