Ksenia Kondrashova
HYT humidity & temp sensor polling / showing received data at TFT with capacitive touchscreen
Dependencies: FT800_2 HYT mbed
HYT humidity & temperature sensor: polling and showing data at TFT via graphical controller FT800/FT801.
Hardware
- HYT-271 / HYT-221 / HYT-939 humidity and temperature sensor by IST-AG
- TFT module uxTouch by Riverdi
- Break Out Board 20 by Riverdi
- Any mbed platform with I2C interface, SPI interface and 2 free GPIO for PD and INT signals
For documentation on the FT800 library, please refer to the library pages.
Connection
MCU-board to TFT-module
MCU-board is connected to TFT-module via Break Out Board. You need 6 signals to connect: SCK, MOSI and MISO are connected to a SPI channel, SS is the chip select signal, PD work as powerdown and INT for interrupts from TFT to MCU.
You have to connect VDD to BLVDD at Break Out Board if you use the board:
MCU-board to HYT sensor
MCU-board is connected to sensor via I2C. Remember to use pull-up resisrors there:
Подробнее в статьях Как перестать бояться и полюбить mbed [Часть 1 - 5] на https://habrahabr.ru/users/uuuulala/topics/
Diff: display.h
- Revision:
- 0:5d3131d1b142
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/display.h Fri Oct 07 11:08:19 2016 +0000
@@ -0,0 +1,123 @@
+#include "mbed.h"
+#include "FT_Platform.h"
+#include "pictures.h"
+#include "statistics.h"
+#include <string>
+
+#ifndef DISPLAY_H_
+#define DISPLAY_H_
+
+/**************************************************************************************************************************
+************************** Defines using for drawing **********************************************************************
+**************************************************************************************************************************/
+
+// all tracking touch screen areas
+typedef enum {
+ NONE_PRESS,
+ CURR_TEMP_PRESS,
+ CURR_HUM_PRESS,
+ STAT_TEMP_PRESS,
+ STAT_HUM_PRESS,
+ ZONE_1_PRESS,
+ ZONE_2_PRESS,
+ ZONE_3_PRESS,
+ ZONE_4_PRESS,
+ ZONE_5_PRESS,
+ ZONE_6_PRESS,
+ ZONE_7_PRESS,
+ ZONE_8_PRESS,
+ ABOUT_PRESS,
+ MENU_PRESS,
+} pressValues;
+
+// all screens available in app
+typedef enum {
+ MENU_SCREEN,
+ CURR_HUM_SCREEN,
+ CURR_TEMP_SCREEN,
+ ABOUT_SCREEN,
+ HUM_24HRS_SCREEN,
+ HUM_3HRS_SCREEN,
+ HUM_30MIN_SCREEN,
+ TEMP_24HRS_SCREEN,
+ TEMP_3HRS_SCREEN,
+ TEMP_30MIN_SCREEN
+} screenValues;
+
+
+/**************************************************************************************************************************
+************************** User class for drawing at FT800 ****************************************************************
+**************************************************************************************************************************/
+
+class Display
+{
+public:
+ // in Display class we use FT800 TFT (definition is available in main.cpp)
+ Display(FT800 *TFT) {
+ _TFT = TFT;
+ }
+
+ // functions describing all available screens (screens-functions)
+ void MainMenu(float humidity, float temperature); // [display.Draw_MainMenu.cpp]
+ void CurrentHumidity(float humidity); // [display.Draw_CurrentValues.cpp]
+ void CurrentTemperature(float temperature); // [display.Draw_CurrentValues.cpp]
+ void StatHumidity_24hrs(volatile uint64_t seconds, short int statistics24hrs[3][288],
+ uint64_t gridSecondsOffset); // [display.Draw_24hrsStatistics.cpp]
+ void StatTemperature_24hrs(volatile uint64_t seconds, short int statistics24hrs[3][288],
+ uint64_t gridSecondsOffset); // [display.Draw_24hrsStatistics.cpp]
+ void StatHumidity_3hrs(volatile uint64_t seconds, short int statistics24hrs[3][288],
+ uint64_t gridSecondsOffset); // [display.Draw_3hrsStatistics.cpp]
+ void StatTemperature_3hrs(volatile uint64_t seconds, short int statistics24hrs[3][288],
+ uint64_t gridSecondsOffset); // [display.Draw_3hrsStatistics.cpp]
+ void StatHumidity_30min(volatile uint64_t seconds, short int statistics24hrs[3][288],
+ uint64_t gridSecondsOffset); // [display.Draw_30minStatistics.cpp]
+ void StatTemperature_30min(volatile uint64_t seconds, short int statistics24hrs[3][288],
+ uint64_t gridSecondsOffset); // [display.Draw_30minStatistics.cpp]
+ void AboutSensor(void); // [display.Draw_AboutSensor.cpp]
+
+ // functions using to prepare FT800 / FT801
+ void LoadImagesAndFonts(void); // [display.LoadImagesAndFonts.cpp]
+ void HandleAllBitmaps(void); // [display.LoadImagesAndFonts.cpp]
+ void Calibration(void); // [display.Calibration.cpp]
+
+ // function for touchscreen tracking
+ char GetTouch(void); // [display.GetTouch.cpp]
+
+ // variables using for navigation between screens
+ char pressedButton;
+ char activeScreen;
+ char timePoint3hrs, timePoint30min;
+
+private:
+ FT800 *_TFT;
+
+ // For start and end every display list (every screen)
+ void StartDL(void); // [display.DisplayListFunctions.cpp]
+ void FinishDL(void); // [display.DisplayListFunctions.cpp]
+
+ // Utility function for drawing
+ void MainMenuReference(void); // [display.Draw_MainMenuReference.cpp]
+ void TimeSinceTurnOn(uint64_t seconds); // [display.Draw_TimeSinceTurnOn.cpp]
+ void HorisontalGrid_Current_Temperature(void); // [display.Draw_Grids.cpp]
+ void HorisontalGrid_Current_Humidity(void); // [display.Draw_Grids.cpp]
+ void HorisontalGrid_Statistics_Temperature(void); // [display.Draw_Grids.cpp]
+ void HorisontalGrid_Statistics_Humidity(void); // [display.Draw_Grids.cpp]
+ void VerticalGrid3hrs(uint64_t gridSecondsOffset); // [display.Draw_Grids.cpp]
+ void VerticalGrid24hrs(uint64_t gridSecondsOffset); // [display.Draw_Grids.cpp]
+ void VerticalGrid30min(uint64_t gridSecondsOffset); // [display.Draw_Grids.cpp]
+
+ // String operations
+ char CreateStringTempHum(char *str, float number, bool isTemp); // [display.StringsTransform.cpp]
+ void CreateStringMultipliedTemp(char *str, short int number); // [display.StringsTransform.cpp]
+ void CreateStringTime(char *str, uint32_t numberOfSeconds); // [display.StringsTransform.cpp]
+
+ // String variables
+ char humidityStr[8], temperatureStr[8];
+ char timeStr[9], gridTimeStr[9];
+
+ // Variables for managing graphs with current temperature or humidity
+ char currentHumidity_X, currentTemperature_X;
+ char currentHumidity_Y[68], currentTemperature_Y[68];
+};
+
+#endif /* SCREENS_H_ */
\ No newline at end of file