Ksenia Kondrashova / Mbed 2 deprecated Temp_&_RH_at_TFT_with_touchscreen-ENG

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

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.

/media/uploads/Ksenia/4_-22-.jpg

You have to connect VDD to BLVDD at Break Out Board if you use the board:

/media/uploads/Ksenia/4_-5-.jpg

MCU-board to HYT sensor

MCU-board is connected to sensor via I2C. Remember to use pull-up resisrors there:

/media/uploads/Ksenia/freshpaint-20-2016.09.16-10.37.03.png

Подробнее в статьях Как перестать бояться и полюбить mbed [Часть 1 - 5] на https://habrahabr.ru/users/uuuulala/topics/

TFT/display.Draw_CurrentValues.cpp@0:5d3131d1b142, 2016-10-07 (annotated)

Committer:
Ksenia
Date:
Fri Oct 07 11:08:19 2016 +0000
Revision:
0:5d3131d1b142
Initial commit;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Ksenia 0:5d3131d1b142 1 #include "display.h"
Ksenia 0:5d3131d1b142 2
Ksenia 0:5d3131d1b142 3 /**************************************************************************************************************************
Ksenia 0:5d3131d1b142 4 ************************** Display real-time humidity *********************************************************************
Ksenia 0:5d3131d1b142 5 **************************************************************************************************************************/
Ksenia 0:5d3131d1b142 6
Ksenia 0:5d3131d1b142 7 void Display::CurrentHumidity(float humidity)
Ksenia 0:5d3131d1b142 8 {
Ksenia 0:5d3131d1b142 9 // accelerator for x-axis data output
Ksenia 0:5d3131d1b142 10 char accelerator = 6;
Ksenia 0:5d3131d1b142 11 // create string including current humididty and " %"
Ksenia 0:5d3131d1b142 12 CreateStringTempHum(humidityStr, humidity, 0);
Ksenia 0:5d3131d1b142 13 // write the new scalable (* 1.5) data to the next available array position
Ksenia 0:5d3131d1b142 14 currentHumidity_Y[currentHumidity_X] = (char)(humidity * 1.5);
Ksenia 0:5d3131d1b142 15
Ksenia 0:5d3131d1b142 16 // start FT800 display list
Ksenia 0:5d3131d1b142 17 StartDL();
Ksenia 0:5d3131d1b142 18
Ksenia 0:5d3131d1b142 19 // draw bottom color for graph line
Ksenia 0:5d3131d1b142 20 (*_TFT).DL(COLOR_RGB(200, 200, 200));
Ksenia 0:5d3131d1b142 21 (*_TFT).DL(BEGIN(EDGE_STRIP_B));
Ksenia 0:5d3131d1b142 22 for (int i = 0; i < 68; i++) {
Ksenia 0:5d3131d1b142 23 if (currentHumidity_Y[i] != 0 && i <= currentHumidity_X) {
Ksenia 0:5d3131d1b142 24 (*_TFT).DL(VERTEX2F((i * accelerator + 15) * 16, (220 - currentHumidity_Y[i]) * 16));
Ksenia 0:5d3131d1b142 25 }
Ksenia 0:5d3131d1b142 26 }
Ksenia 0:5d3131d1b142 27
Ksenia 0:5d3131d1b142 28 // draw horisontal grid for humidity (0 .. 100)
Ksenia 0:5d3131d1b142 29 HorisontalGrid_Current_Humidity();
Ksenia 0:5d3131d1b142 30
Ksenia 0:5d3131d1b142 31 // draw main graph line
Ksenia 0:5d3131d1b142 32 (*_TFT).DL(COLOR_RGB(9, 0, 63));
Ksenia 0:5d3131d1b142 33 (*_TFT).DL(BEGIN(POINTS));
Ksenia 0:5d3131d1b142 34 (*_TFT).DL(POINT_SIZE(25));
Ksenia 0:5d3131d1b142 35 for (int i = 0; i < 68; i++) {
Ksenia 0:5d3131d1b142 36 if (currentHumidity_Y[i] != 0 && (i < currentHumidity_X || i >= currentHumidity_X + 13)) {
Ksenia 0:5d3131d1b142 37 (*_TFT).DL(VERTEX2F((i * accelerator + 15) * 16, (222 - currentHumidity_Y[i]) * 16));
Ksenia 0:5d3131d1b142 38 }
Ksenia 0:5d3131d1b142 39 }
Ksenia 0:5d3131d1b142 40
Ksenia 0:5d3131d1b142 41 // draw subtitle for main graph line
Ksenia 0:5d3131d1b142 42 (*_TFT).DL(COLOR_RGB(255, 255, 255));
Ksenia 0:5d3131d1b142 43 (*_TFT).DL(BEGIN(RECTS));
Ksenia 0:5d3131d1b142 44 (*_TFT).DL(VERTEX2II((currentHumidity_X * accelerator + 40) + 25, (200 - currentHumidity_Y[currentHumidity_X]), 0, 0));
Ksenia 0:5d3131d1b142 45 (*_TFT).DL(VERTEX2II((currentHumidity_X * accelerator + 40), (177 - currentHumidity_Y[currentHumidity_X]), 0, 0));
Ksenia 0:5d3131d1b142 46 (*_TFT).DL(COLOR_RGB(255, 0, 0));
Ksenia 0:5d3131d1b142 47 (*_TFT).Text((currentHumidity_X * accelerator + 30), (180 - currentHumidity_Y[currentHumidity_X] - 7), 28, 0, humidityStr);
Ksenia 0:5d3131d1b142 48 (*_TFT).DL(BEGIN(LINES));
Ksenia 0:5d3131d1b142 49 (*_TFT).DL(LINE_WIDTH(8));
Ksenia 0:5d3131d1b142 50 (*_TFT).DL(VERTEX2F((currentHumidity_X * accelerator + 15) * 16, (220 - currentHumidity_Y[currentHumidity_X]) * 16));
Ksenia 0:5d3131d1b142 51 (*_TFT).DL(VERTEX2F((currentHumidity_X * accelerator + 35) * 16, (200 - currentHumidity_Y[currentHumidity_X]) * 16));
Ksenia 0:5d3131d1b142 52 (*_TFT).DL(COLOR_RGB(255, 30, 33));
Ksenia 0:5d3131d1b142 53 (*_TFT).DL(BEGIN(POINTS));
Ksenia 0:5d3131d1b142 54 (*_TFT).DL(POINT_SIZE(33));
Ksenia 0:5d3131d1b142 55 (*_TFT).DL(VERTEX2F((currentHumidity_X * accelerator + 15) * 16, (220 - currentHumidity_Y[currentHumidity_X]) * 16));
Ksenia 0:5d3131d1b142 56 (*_TFT).DL(END());
Ksenia 0:5d3131d1b142 57
Ksenia 0:5d3131d1b142 58 // write main title
Ksenia 0:5d3131d1b142 59 (*_TFT).DL(COLOR_RGB(0, 0, 0));
Ksenia 0:5d3131d1b142 60 (*_TFT).Text(11, 15, 30, 0, "Current humidity, rH");
Ksenia 0:5d3131d1b142 61
Ksenia 0:5d3131d1b142 62 // clean the space under the plot, create link to the main menu
Ksenia 0:5d3131d1b142 63 (*_TFT).DL(SCISSOR_XY(15, 222));
Ksenia 0:5d3131d1b142 64 (*_TFT).DL(SCISSOR_SIZE(420, 53));
Ksenia 0:5d3131d1b142 65 (*_TFT).Gradient(0, 256, 0xFFFFFF, 450, 16, 0xFFFFFF);
Ksenia 0:5d3131d1b142 66 MainMenuReference();
Ksenia 0:5d3131d1b142 67
Ksenia 0:5d3131d1b142 68 // finish FT800 display list
Ksenia 0:5d3131d1b142 69 FinishDL();
Ksenia 0:5d3131d1b142 70
Ksenia 0:5d3131d1b142 71 // manage the index for array with real-time humidity
Ksenia 0:5d3131d1b142 72 if (currentHumidity_X >= 68) {
Ksenia 0:5d3131d1b142 73 currentHumidity_X = 0;
Ksenia 0:5d3131d1b142 74 } else {
Ksenia 0:5d3131d1b142 75 currentHumidity_X ++;
Ksenia 0:5d3131d1b142 76 }
Ksenia 0:5d3131d1b142 77 if (pressedButton == MENU_PRESS) {
Ksenia 0:5d3131d1b142 78 for (int i = 0; i < 68; i++) {
Ksenia 0:5d3131d1b142 79 currentHumidity_Y[i] = 0;
Ksenia 0:5d3131d1b142 80 currentHumidity_X = 0;
Ksenia 0:5d3131d1b142 81 }
Ksenia 0:5d3131d1b142 82 }
Ksenia 0:5d3131d1b142 83 }
Ksenia 0:5d3131d1b142 84
Ksenia 0:5d3131d1b142 85 /**************************************************************************************************************************
Ksenia 0:5d3131d1b142 86 ************************** Display real-time temperature ******************************************************************
Ksenia 0:5d3131d1b142 87 **************************************************************************************************************************/
Ksenia 0:5d3131d1b142 88
Ksenia 0:5d3131d1b142 89 void Display::CurrentTemperature(float temperature)
Ksenia 0:5d3131d1b142 90 {
Ksenia 0:5d3131d1b142 91 // accelerator for x-axis data output
Ksenia 0:5d3131d1b142 92 char accelerator = 6;
Ksenia 0:5d3131d1b142 93 // create string including current temperature with decimal mark and " С"
Ksenia 0:5d3131d1b142 94 char degreeOffset = CreateStringTempHum(temperatureStr, temperature, 1);
Ksenia 0:5d3131d1b142 95 // write the new scalable (* 0.88 + 45) data to the next available array position
Ksenia 0:5d3131d1b142 96 currentTemperature_Y[currentTemperature_X] = (char)(temperature * 0.88 + 45);
Ksenia 0:5d3131d1b142 97
Ksenia 0:5d3131d1b142 98 // start FT800 display list
Ksenia 0:5d3131d1b142 99 StartDL();
Ksenia 0:5d3131d1b142 100
Ksenia 0:5d3131d1b142 101 // draw bottom color for graph line
Ksenia 0:5d3131d1b142 102 (*_TFT).DL(COLOR_RGB(200, 177, 199));
Ksenia 0:5d3131d1b142 103 (*_TFT).DL(BEGIN(EDGE_STRIP_B));
Ksenia 0:5d3131d1b142 104 for (int i = 0; i < 68; i++) {
Ksenia 0:5d3131d1b142 105 if (currentTemperature_Y[i] != 0 && i <= currentTemperature_X) {
Ksenia 0:5d3131d1b142 106 (*_TFT).DL(VERTEX2F((i * accelerator + 15) * 16, (220 - currentTemperature_Y[i]) * 16));
Ksenia 0:5d3131d1b142 107 }
Ksenia 0:5d3131d1b142 108 }
Ksenia 0:5d3131d1b142 109
Ksenia 0:5d3131d1b142 110 // draw horisontal grid for temperature (-50 .. +125)
Ksenia 0:5d3131d1b142 111 HorisontalGrid_Current_Temperature();
Ksenia 0:5d3131d1b142 112
Ksenia 0:5d3131d1b142 113 // draw main graph line
Ksenia 0:5d3131d1b142 114 (*_TFT).DL(COLOR_RGB(9, 0, 63));
Ksenia 0:5d3131d1b142 115 (*_TFT).DL(BEGIN(POINTS));
Ksenia 0:5d3131d1b142 116 (*_TFT).DL(POINT_SIZE(25));
Ksenia 0:5d3131d1b142 117 for (int i = 0; i < 68; i++) {
Ksenia 0:5d3131d1b142 118 if (currentTemperature_Y[i] != 0 && (i < currentTemperature_X || i >= currentTemperature_X + 13)) {
Ksenia 0:5d3131d1b142 119 (*_TFT).DL(VERTEX2F((i * accelerator + 15) * 16, (222 - currentTemperature_Y[i]) * 16));
Ksenia 0:5d3131d1b142 120 }
Ksenia 0:5d3131d1b142 121 }
Ksenia 0:5d3131d1b142 122
Ksenia 0:5d3131d1b142 123 // draw subtitle for main graph line
Ksenia 0:5d3131d1b142 124 (*_TFT).DL(COLOR_RGB(255, 255, 255));
Ksenia 0:5d3131d1b142 125 (*_TFT).DL(BEGIN(RECTS));
Ksenia 0:5d3131d1b142 126 (*_TFT).DL(VERTEX2II((currentTemperature_X * accelerator + 40) + 25, (200 - currentTemperature_Y[currentTemperature_X]), 0, 0));
Ksenia 0:5d3131d1b142 127 (*_TFT).DL(VERTEX2II((currentTemperature_X * accelerator + 40), (177 - currentTemperature_Y[currentTemperature_X]), 0, 0));
Ksenia 0:5d3131d1b142 128 (*_TFT).DL(COLOR_RGB(255, 0, 0));
Ksenia 0:5d3131d1b142 129 (*_TFT).Text((currentTemperature_X * accelerator + 25), (173 - currentTemperature_Y[currentTemperature_X]), 28, 0, temperatureStr);
Ksenia 0:5d3131d1b142 130 (*_TFT).Text((currentTemperature_X * accelerator + 25) + (degreeOffset * 8 + 3), (173 - currentTemperature_Y[currentTemperature_X]) - 4, 20, 0, "o");
Ksenia 0:5d3131d1b142 131 (*_TFT).DL(BEGIN(LINES));
Ksenia 0:5d3131d1b142 132 (*_TFT).DL(LINE_WIDTH(8));
Ksenia 0:5d3131d1b142 133 (*_TFT).DL(VERTEX2F((currentTemperature_X * accelerator + 15) * 16, (220 - currentTemperature_Y[currentTemperature_X]) * 16));
Ksenia 0:5d3131d1b142 134 (*_TFT).DL(VERTEX2F((currentTemperature_X * accelerator + 35) * 16, (200 - currentTemperature_Y[currentTemperature_X]) * 16));
Ksenia 0:5d3131d1b142 135 (*_TFT).DL(COLOR_RGB(255, 30, 33));
Ksenia 0:5d3131d1b142 136 (*_TFT).DL(BEGIN(POINTS));
Ksenia 0:5d3131d1b142 137 (*_TFT).DL(POINT_SIZE(33));
Ksenia 0:5d3131d1b142 138 (*_TFT).DL(VERTEX2F((currentTemperature_X * accelerator + 15) * 16, (220 - currentTemperature_Y[currentTemperature_X]) * 16));
Ksenia 0:5d3131d1b142 139 (*_TFT).DL(END());
Ksenia 0:5d3131d1b142 140
Ksenia 0:5d3131d1b142 141 // write main title
Ksenia 0:5d3131d1b142 142 (*_TFT).DL(COLOR_RGB(0, 0, 0));
Ksenia 0:5d3131d1b142 143 (*_TFT).Text(11, 15, 30, 0, "Current temperature");
Ksenia 0:5d3131d1b142 144
Ksenia 0:5d3131d1b142 145 // clean the space under the plot, create link to the main menu
Ksenia 0:5d3131d1b142 146 (*_TFT).DL(SCISSOR_XY(15, 225));
Ksenia 0:5d3131d1b142 147 (*_TFT).DL(SCISSOR_SIZE(420, 53));
Ksenia 0:5d3131d1b142 148 (*_TFT).Gradient(0, 256, 0xFFFFFF, 450, 16, 0xFFFFFF);
Ksenia 0:5d3131d1b142 149 MainMenuReference();
Ksenia 0:5d3131d1b142 150
Ksenia 0:5d3131d1b142 151 // finish FT800 display list
Ksenia 0:5d3131d1b142 152 FinishDL();
Ksenia 0:5d3131d1b142 153
Ksenia 0:5d3131d1b142 154 if (currentTemperature_X >= 68) {
Ksenia 0:5d3131d1b142 155 currentTemperature_X = 0;
Ksenia 0:5d3131d1b142 156 } else {
Ksenia 0:5d3131d1b142 157 currentTemperature_X ++;
Ksenia 0:5d3131d1b142 158 }
Ksenia 0:5d3131d1b142 159 if (pressedButton == MENU_PRESS) {
Ksenia 0:5d3131d1b142 160 for (int i = 0; i < 68; i++) {
Ksenia 0:5d3131d1b142 161 currentTemperature_Y[i] = 0;
Ksenia 0:5d3131d1b142 162 currentTemperature_X = 0;
Ksenia 0:5d3131d1b142 163 }
Ksenia 0:5d3131d1b142 164 }
Ksenia 0:5d3131d1b142 165 }