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Code Issues Releases Activity

OP-1793 - Use a constant for running average smoothing factor

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This commit is contained in:
Alessio Morale 2015-03-20 22:11:29 +01:00
parent bcffde5465
commit ddd72324c3
1 changed files with 6 additions and 3 deletions
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9
flight/pios/common/pios_ms5611.c
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@ -42,7 +42,9 @@
#ifndef PIOS_MS5611_SLOW_TEMP_RATE
#define PIOS_MS5611_SLOW_TEMP_RATE 1
#endif
// Running moving average smoothing factor
#define PIOS_MS5611_TEMP_SMOOTHING 10
//
/* Local Types */
typedef struct {
uint16_t C[6];
@ -248,8 +250,9 @@ int32_t PIOS_MS5611_ReadADC(void)
// Actual temperature (-40…85°C with 0.01°C resolution)
// TEMP = 20°C + dT * TEMPSENS = 2000 + dT * C6 / 2^23
Temperature = 2000l + ((deltaTemp * CalibData.C[5]) / POW2(23));
if(FilteredTemperature != INT32_MIN){
FilteredTemperature = (FilteredTemperature * 9 + Temperature) / 10;
if (FilteredTemperature != INT32_MIN) {
FilteredTemperature = (FilteredTemperature * (PIOS_MS5611_TEMP_SMOOTHING - 1)
+ Temperature) / PIOS_MS5611_TEMP_SMOOTHING;
} else {
FilteredTemperature = Temperature;
}