Ksenia Kondrashova
Русифицированная версия программы для измерения температуры и отн. влажности и вывода информации на сенсорный TFT
Dependencies: FT800_2 HYT mbed
Компоненты
- Датчик температуры и относительной влажности HYT-271 / HYT-221 / HYT-939 от компании IST-AG
- TFT-модуль серии uxTouch от компании Riverdi
- Плата-переходник Break Out Board 20 от компании Riverdi
- Любая отладочная плата с поддержкой mbed, интерфейсами I2C и SPI interface двумя свободными линиями для сигналов PD и INT
Подключение
Отладочная плата к TFT-модулю
Отладочная плата подключается к модулю через переходник Break Out Board 20. На плате-переходнике используется 6 сигналов: SCK, MOSI, MISO, SS (интерфейс SPI), PD (powerdown) и INT (interrupt).
Питание должно быть подано не только на VDD, но и на BLVDD - подсветку экрана. Соответствующие выводы можно просто соединить между собой:
Отладочная плата к датчику серии HYT
К датчику отладочная плата подключается по I2C. Не забываем про подтяжку к питанию:
Демонстрация работы
Процесс создания приложения подробно описан тут: https://habrahabr.ru/users/uuuulala/topics/
Diff: statistics.cpp
- Revision:
- 0:9db07391e780
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/statistics.cpp Fri Oct 07 11:03:16 2016 +0000
@@ -0,0 +1,132 @@
+#include "statistics.h"
+
+/**************************************************************************************************************************
+************************** Main function called every second **************************************************************
+**************************************************************************************************************************/
+uint64_t Statistics::UpdateStatistics(float humidity, float temperature, uint64_t seconds, uint64_t changeSecondsOffset)
+{
+ short int secondsIn5min = (seconds % 300); // 0..299
+ if (secondsIn5min == 0) {
+ changeSecondsOffset = Update24hrsData(changeSecondsOffset);
+ }
+ CalculateHumididty(humidity, secondsIn5min);
+ CalculateTemperature(temperature, secondsIn5min);
+
+ // changeSecondsOffset is nessesary for changing time-grid if more then 24 hours left since devise was turned on
+ return changeSecondsOffset;
+}
+
+/**************************************************************************************************************************
+************************** Update average, minimum and maximum humidity in current five-minute interval ****************
+**************************************************************************************************************************/
+void Statistics::CalculateHumididty(float humidity, short int secondsIn5min)
+{
+ humidity5min[secondsIn5min] = humidity;
+ humidity5minSum += humidity5min[secondsIn5min];
+ humidity5minAverage = humidity5minSum / (secondsIn5min + 1);
+
+ if (humidity5min[secondsIn5min] > humidity5minMax || humidity5minMax == INIT_STATISTICS_NUMBER) {
+ humidity5minMax = humidity5min[secondsIn5min];
+ }
+ if (humidity5min[secondsIn5min] < humidity5minMin || humidity5minMin == INIT_STATISTICS_NUMBER) {
+ humidity5minMin = humidity5min[secondsIn5min];
+ }
+}
+
+/**************************************************************************************************************************
+************************** Update average, minimum and maximum temperature in current five-minute interval ****************
+**************************************************************************************************************************/
+void Statistics::CalculateTemperature(float temperature, short int secondsIn5min)
+{
+ // we use TEMPERATURE_MULTIPLIER = 10 for store temperatures tenths in integer values
+ temperature5min[secondsIn5min] = temperature * TEMPERATURE_MULTIPLIER;
+ temperature5minSum += temperature5min[secondsIn5min];
+ temperature5minAverage = temperature5minSum / (secondsIn5min + 1);
+
+ if (temperature5min[secondsIn5min] > temperature5minMax || temperature5minMax == INIT_STATISTICS_NUMBER) {
+ temperature5minMax = temperature5min[secondsIn5min];
+ }
+ if (temperature5min[secondsIn5min] < temperature5minMin || temperature5minMin == INIT_STATISTICS_NUMBER) {
+ temperature5minMin = temperature5min[secondsIn5min];
+ }
+}
+
+/**************************************************************************************************************************
+************************** Update humidity24hrs[][] and temperature24hrs[][] after each five-minute interval **************
+**************************************************************************************************************************/
+uint64_t Statistics::Update24hrsData(uint64_t changeSecondsOffset)
+{
+ // after each five-minute interval we moving to next value if it's availiable
+ // OR shifting the entire array and update just last value if 24 hrs are already gone
+ if (Counter24hrs < 287) {
+ Counter24hrs ++;
+ } else {
+ for (int i = 0; i < 288; i++) {
+ humidity24hrs[0][i] = humidity24hrs[0][i + 1];
+ humidity24hrs[1][i] = humidity24hrs[1][i + 1];
+ humidity24hrs[2][i] = humidity24hrs[2][i + 1];
+ temperature24hrs[0][i] = temperature24hrs[0][i + 1];
+ temperature24hrs[1][i] = temperature24hrs[1][i + 1];
+ temperature24hrs[2][i] = temperature24hrs[2][i + 1];
+ }
+ Counter24hrs = 287;
+ changeSecondsOffset += 300;
+ }
+
+ // update the current value
+ humidity24hrs[0][Counter24hrs] = humidity5minAverage;
+ humidity24hrs[1][Counter24hrs] = humidity5minMin;
+ humidity24hrs[2][Counter24hrs] = humidity5minMax;
+ temperature24hrs[0][Counter24hrs] = temperature5minAverage;
+ temperature24hrs[1][Counter24hrs] = temperature5minMin;
+ temperature24hrs[2][Counter24hrs] = temperature5minMax;
+
+ // initialize all values using for calculations "inside" five-minute interval
+ for (int i = 0; i < 300; i++) {
+ humidity5min[i] = INIT_STATISTICS_NUMBER;
+ temperature5min[i] = INIT_STATISTICS_NUMBER;
+ }
+ humidity5minSum = 0;
+ humidity5minMax = INIT_STATISTICS_NUMBER;
+ humidity5minMin = INIT_STATISTICS_NUMBER;
+ temperature5minSum = 0;
+ temperature5minMax = INIT_STATISTICS_NUMBER;
+ temperature5minMin = INIT_STATISTICS_NUMBER;
+
+ // changeSecondsOffset is nessesary for changing time-grid if more then 24 hours left since devise was turned on
+ return changeSecondsOffset;
+}
+
+/**************************************************************************************************************************
+************************** Initialization for all statistics values and arrays ********************************************
+**************************************************************************************************************************/
+void Statistics::InitValues(float humidity, float temperature)
+{
+ for (int i = 0; i < 300; i++) {
+ humidity5min[i] = INIT_STATISTICS_NUMBER;
+ temperature5min[i] = INIT_STATISTICS_NUMBER;
+ }
+ for (int i = 0; i < 288; i++) {
+ humidity24hrs[0][i] = INIT_STATISTICS_NUMBER;
+ humidity24hrs[1][i] = INIT_STATISTICS_NUMBER;
+ humidity24hrs[2][i] = INIT_STATISTICS_NUMBER;
+ temperature24hrs[0][i] = INIT_STATISTICS_NUMBER;
+ temperature24hrs[1][i] = INIT_STATISTICS_NUMBER;
+ temperature24hrs[2][i] = INIT_STATISTICS_NUMBER;
+ }
+ humidity5min[0] = humidity;
+ humidity5minMin = humidity;
+ humidity5minMax = humidity;
+ humidity24hrs[0][0] = humidity;
+ humidity24hrs[1][0] = humidity;
+ humidity24hrs[2][0] = humidity;
+
+ temperature5min[0] = temperature * TEMPERATURE_MULTIPLIER;
+ temperature5minMin = temperature * TEMPERATURE_MULTIPLIER;
+ temperature5minMax = temperature * TEMPERATURE_MULTIPLIER;
+ temperature24hrs[0][0] = temperature * TEMPERATURE_MULTIPLIER;
+ temperature24hrs[1][0] = temperature * TEMPERATURE_MULTIPLIER;
+ temperature24hrs[2][0] = temperature * TEMPERATURE_MULTIPLIER;
+
+ Counter24hrs = 0;
+}
\ No newline at end of file