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Simple Weather Service

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Store temperatures as int16_t (instead of uint8_t previously). The temperature is expressed in °C * 100.
This commit is contained in:
Jean-François Milants 2023-12-23 17:18:41 +01:00 committed by JF
parent ad090ab188
commit e5b73212f6
4 changed files with 53 additions and 38 deletions
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42
doc/SimpleWeatherService.md
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@ -28,11 +28,11 @@ The byte array must contain the following data:
- [0] : Message type = `0`
- [1] : Message version = `0`
- [2][3][4][5][6][7][8][9] : Timestamp (64 bits UNIX timestamp, number of nanoseconds elapsed since 1 JAN 1970)
- [10] : Current temperature (°C)
- [11] : Minimum temperature (°C)
- [12] : Maximum temperature (°C)
- [13]..[44] : location (string, unused characters should be set to `0`)
- [45] : icon ID
- [10, 11] : Current temperature (°C * 100)
- [12, 13] : Minimum temperature (°C * 100)
- [14, 15] : Maximum temperature (°C * 100)
- [16]..[47] : location (string, unused characters should be set to `0`)
- [48] : icon ID
- 0 = Sun, clear sky
- 1 = Few clouds
- 2 = Clouds
@ -48,21 +48,21 @@ The byte array must contain the following data:
The byte array must contain the following data:
- [0] : Message type = `0`
- [0] : Message version = `0`
- [1] : Message version = `0`
- [2][3][4][5][6][7][8][9] : Timestamp (64 bits UNIX timestamp, number of nanoseconds elapsed since 1 JAN 1970)
- [10] Number of days (Max 5, fields for unused days should be set to `0`)
- [11] Day 0 Minimum temperature
- [12] Day 0 Maximum temperature
- [13] Day 0 Icon ID
- [14] Day 1 Minimum temperature
- [15] Day 1 Maximum temperature
- [16] Day 1 Icon ID
- [17] Day 2 Minimum temperature
- [18] Day 2 Maximum temperature
- [19] Day 2 Icon ID
- [20] Day 3 Minimum temperature
- [21] Day 3 Maximum temperature
- [22] Day 3 Icon ID
- [23] Day 4 Minimum temperature
- [24] Day 4 Maximum temperature
- [25] Day 4 Icon ID
- [11,12] Day 0 Minimum temperature (°C * 100)
- [13,14] Day 0 Maximum temperature (°C * 100)
- [15] Day 0 Icon ID
- [16,17] Day 1 Minimum temperature (°C * 100)
- [18,19] Day 1 Maximum temperature (°C * 100)
- [20] Day 1 Icon ID
- [21,22] Day 2 Minimum temperature (°C * 100)
- [23,24] Day 2 Maximum temperature (°C * 100)
- [25] Day 2 Icon ID
- [26,27] Day 3 Minimum temperature (°C * 100)
- [28,29] Day 3 Maximum temperature (°C * 100)
- [30] Day 3 Icon ID
- [31,32] Day 4 Minimum temperature (°C * 100)
- [33,34] Day 4 Maximum temperature (°C * 100)
- [35] Day 4 Icon ID

31
src/components/ble/SimpleWeatherService.cpp
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@ -29,18 +29,30 @@ namespace {
enum class MessageType : uint8_t { CurrentWeather, Forecast, Unknown };
uint64_t ToUInt64(const uint8_t* data) {
return *(reinterpret_cast<const uint64_t*>(data));
return data[0] +
(data[1] << 8) +
(data[2] << 16) +
(data[3] << 24) +
(static_cast<uint64_t>(data[4]) << 32) +
(static_cast<uint64_t>(data[5]) << 48) +
(static_cast<uint64_t>(data[6]) << 48) +
(static_cast<uint64_t>(data[7]) << 56);
}
int16_t ToInt16(const uint8_t* data) {
return data[0] +
(data[1] << 8);
}
SimpleWeatherService::CurrentWeather CreateCurrentWeather(const uint8_t* dataBuffer) {
SimpleWeatherService::Location cityName;
std::memcpy(cityName.data(), &dataBuffer[13], 32);
std::memcpy(cityName.data(), &dataBuffer[16], 32);
cityName[32] = '\0';
return SimpleWeatherService::CurrentWeather (ToUInt64(&dataBuffer[2]),
dataBuffer[10],
dataBuffer[11],
dataBuffer[12],
SimpleWeatherService::Icons{dataBuffer[13 + 32]},
ToInt16(&dataBuffer[10]),
ToInt16(&dataBuffer[12]),
ToInt16(&dataBuffer[14]),
SimpleWeatherService::Icons{dataBuffer[16 + 32]},
std::move(cityName));
}
@ -51,7 +63,10 @@ namespace {
const uint8_t nbDaysInBuffer = dataBuffer[10];
const uint8_t nbDays = std::min(SimpleWeatherService::MaxNbForecastDays, nbDaysInBuffer);
for (int i = 0; i < nbDays; i++) {
days[i] = SimpleWeatherService::Forecast::Day {dataBuffer[11 + (i * 3)], dataBuffer[12 + (i * 3)], SimpleWeatherService::Icons{dataBuffer[13 + (i * 3)]}};
days[i] = SimpleWeatherService::Forecast::Day {
ToInt16(&dataBuffer[11 + (i * 5)]),
ToInt16(&dataBuffer[13 + (i * 5)]),
SimpleWeatherService::Icons{dataBuffer[15 + (i * 5)]}};
}
return SimpleWeatherService::Forecast {timestamp, nbDays, days};
}
@ -95,7 +110,7 @@ int SimpleWeatherService::OnCommand(struct ble_gatt_access_ctxt* ctxt) {
currentWeather->minTemperature,
currentWeather->maxTemperature,
currentWeather->iconId,
currentWeather->location);
currentWeather->location.data());
}
break;
case MessageType::Forecast:

16
src/components/ble/SimpleWeatherService.h
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@ -64,9 +64,9 @@ namespace Pinetime {
using Location = std::array<char, 33>; // 32 char + \0 (end of string)
struct CurrentWeather {
CurrentWeather(uint64_t timestamp,
uint8_t temperature,
uint8_t minTemperature,
uint8_t maxTemperature,
int16_t temperature,
int16_t minTemperature,
int16_t maxTemperature,
Icons iconId,
Location&& location)
: timestamp {timestamp},
@ -78,9 +78,9 @@ namespace Pinetime {
}
uint64_t timestamp;
uint8_t temperature;
uint8_t minTemperature;
uint8_t maxTemperature;
int16_t temperature;
int16_t minTemperature;
int16_t maxTemperature;
Icons iconId;
Location location;
@ -92,8 +92,8 @@ namespace Pinetime {
uint8_t nbDays;
struct Day {
uint8_t minTemperature;
uint8_t maxTemperature;
int16_t minTemperature;
int16_t maxTemperature;
Icons iconId;
};

2
src/displayapp/screens/WatchFacePineTimeStyle.cpp
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@ -543,7 +543,7 @@ void WatchFacePineTimeStyle::Refresh() {
if (currentWeather.IsUpdated()) {
auto optCurrentWeather = currentWeather.Get();
if (optCurrentWeather) {
lv_label_set_text_fmt(temperature, "%d°", optCurrentWeather->temperature);
lv_label_set_text_fmt(temperature, "%d°", (optCurrentWeather->temperature)/100);
lv_label_set_text(weatherIcon, Symbols::GetSymbol(optCurrentWeather->iconId));
lv_obj_realign(temperature);
lv_obj_realign(weatherIcon);