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Fixes #3059: added unit conversions from km/h

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This commit is contained in:
Damjan Adamic 2015-11-12 13:55:24 +01:00
parent 09846ca917
commit 58edcc3af8
1 changed files with 23 additions and 5 deletions
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28
radio/src/telemetry/telemetry.cpp
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@ -560,22 +560,40 @@ int32_t convertTelemetryValue(int32_t value, uint8_t unit, uint8_t prec, uint8_t
}
else if (unit == UNIT_KTS) {
if (destUnit == UNIT_KMH) {
// kts to km/h (1 knot = 1.85200 kilometers per hour)
// 1 knot = 1.85200 kilometers per hour
value = (value * 1852) / 1000;
}
else if (destUnit == UNIT_MPH) {
// kts to mph (1 knot = 1.15077945 miles per hour)
// 1 knot = 1.15077945 miles per hour
value = (value * 1151) / 1000;
}
else if (destUnit == UNIT_METERS_PER_SECOND) {
// kts to m/s (1 knot = 0.514444444 meters / second)
value = (value * 514) / 1000;
// 1 knot = 0.514444444 meters / second (divide with 1.94384449)
value = (value * 1000) / 1944;
}
else if (destUnit == UNIT_FEET_PER_SECOND) {
// kts to f/s (1 knot = 1.68780986 feet per second)
// 1 knot = 1.68780986 feet per second
value = (value * 1688) / 1000;
}
}
else if (unit == UNIT_KMH) {
if (destUnit == UNIT_KTS) {
// 1 km/h = 0.539956803 knots (divide with 1.85200)
value = (value * 1000) / 1852;
}
else if (destUnit == UNIT_MPH) {
// 1 km/h = 0.621371192 miles per hour (divide with 1.60934400)
value = (value * 1000) / 1609;
}
else if (destUnit == UNIT_METERS_PER_SECOND) {
// 1 km/h = 0.277777778 meters / second (or beter division with 3.6)
value = (value * 1000) / 3600;
}
else if (destUnit == UNIT_FEET_PER_SECOND) {
// (1 km/h = 0.911344415 feet per second
value = (value * 911) / 1000;
}
}
else if (unit == UNIT_CELSIUS) {
if (destUnit == UNIT_FAHRENHEIT) {
// T(°F) = T(°C)×1,8 + 32