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.StringsTransform.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 ************************** Transform humiditity / temperature float value to string ***************************************
Ksenia 0:5d3131d1b142 5 **************************************************************************************************************************/
Ksenia 0:5d3131d1b142 6 // If isTemp = 0, resulting string includes
Ksenia 0:5d3131d1b142 7 // 1. current humididty
Ksenia 0:5d3131d1b142 8 // 3. " %"
Ksenia 0:5d3131d1b142 9
Ksenia 0:5d3131d1b142 10 // If isTemp = 1, resulting string includes
Ksenia 0:5d3131d1b142 11 // 1. "-" (optional),
Ksenia 0:5d3131d1b142 12 // 2. current temperature with decimal mark
Ksenia 0:5d3131d1b142 13 // 3. " С"
Ksenia 0:5d3131d1b142 14
Ksenia 0:5d3131d1b142 15 // Returns offset using for placing degree sign
Ksenia 0:5d3131d1b142 16 char Display::CreateStringTempHum(char *str, float number, bool isTemp)
Ksenia 0:5d3131d1b142 17 {
Ksenia 0:5d3131d1b142 18 char offsetForDegreeSign;
Ksenia 0:5d3131d1b142 19 short int multipedNumber = (short int)(number * 100);
Ksenia 0:5d3131d1b142 20 char strCnt = 0;
Ksenia 0:5d3131d1b142 21 if (isTemp) {
Ksenia 0:5d3131d1b142 22 if (multipedNumber < 0) {
Ksenia 0:5d3131d1b142 23 multipedNumber = -multipedNumber;
Ksenia 0:5d3131d1b142 24 str[strCnt] = '-';
Ksenia 0:5d3131d1b142 25 strCnt++;
Ksenia 0:5d3131d1b142 26 }
Ksenia 0:5d3131d1b142 27 }
Ksenia 0:5d3131d1b142 28 if (multipedNumber >= 10000) {
Ksenia 0:5d3131d1b142 29 str[strCnt] = '0' + (multipedNumber % 100000) / 10000;
Ksenia 0:5d3131d1b142 30 strCnt++;
Ksenia 0:5d3131d1b142 31 }
Ksenia 0:5d3131d1b142 32 if (multipedNumber >= 1000) {
Ksenia 0:5d3131d1b142 33 str[strCnt] = '0' + (multipedNumber % 10000) / 1000;
Ksenia 0:5d3131d1b142 34 strCnt++;
Ksenia 0:5d3131d1b142 35 }
Ksenia 0:5d3131d1b142 36 if (multipedNumber >= 100) {
Ksenia 0:5d3131d1b142 37 str[strCnt] = '0' + (multipedNumber % 1000) / 100;
Ksenia 0:5d3131d1b142 38 strCnt++;
Ksenia 0:5d3131d1b142 39 }
Ksenia 0:5d3131d1b142 40 if (isTemp) {
Ksenia 0:5d3131d1b142 41 str[strCnt] = '.';
Ksenia 0:5d3131d1b142 42 strCnt++;
Ksenia 0:5d3131d1b142 43 str[strCnt] = '0' + (multipedNumber % 100) / 10;
Ksenia 0:5d3131d1b142 44 strCnt++;
Ksenia 0:5d3131d1b142 45 str[strCnt] = ' ';
Ksenia 0:5d3131d1b142 46 strCnt++;
Ksenia 0:5d3131d1b142 47 offsetForDegreeSign = strCnt;
Ksenia 0:5d3131d1b142 48 str[strCnt] = 'C';
Ksenia 0:5d3131d1b142 49 strCnt++;
Ksenia 0:5d3131d1b142 50 } else {
Ksenia 0:5d3131d1b142 51 str[strCnt] = '%';
Ksenia 0:5d3131d1b142 52 strCnt++;
Ksenia 0:5d3131d1b142 53 }
Ksenia 0:5d3131d1b142 54 str[strCnt] = 0;
Ksenia 0:5d3131d1b142 55
Ksenia 0:5d3131d1b142 56 return offsetForDegreeSign;
Ksenia 0:5d3131d1b142 57 }
Ksenia 0:5d3131d1b142 58
Ksenia 0:5d3131d1b142 59
Ksenia 0:5d3131d1b142 60 /**************************************************************************************************************************
Ksenia 0:5d3131d1b142 61 ************************** Transform multiplied temperature value to string ***********************************************
Ksenia 0:5d3131d1b142 62 **************************************************************************************************************************/
Ksenia 0:5d3131d1b142 63 // Resulting string includes
Ksenia 0:5d3131d1b142 64 // 1. "-" (optional),
Ksenia 0:5d3131d1b142 65 // 2. current temperature with decimal mark
Ksenia 0:5d3131d1b142 66 void Display::CreateStringMultipliedTemp(char *str, short int number)
Ksenia 0:5d3131d1b142 67 {
Ksenia 0:5d3131d1b142 68 char strCnt = 0;
Ksenia 0:5d3131d1b142 69 if (number < 0) {
Ksenia 0:5d3131d1b142 70 number = -number;
Ksenia 0:5d3131d1b142 71 str[strCnt] = '-';
Ksenia 0:5d3131d1b142 72 strCnt++;
Ksenia 0:5d3131d1b142 73 }
Ksenia 0:5d3131d1b142 74 if (number >= 1000) {
Ksenia 0:5d3131d1b142 75 str[strCnt] = '0' + (number % 10000) / 1000;
Ksenia 0:5d3131d1b142 76 strCnt++;
Ksenia 0:5d3131d1b142 77 }
Ksenia 0:5d3131d1b142 78 if (number >= 100) {
Ksenia 0:5d3131d1b142 79 str[strCnt] = '0' + (number % 1000) / 100;
Ksenia 0:5d3131d1b142 80 strCnt++;
Ksenia 0:5d3131d1b142 81 }
Ksenia 0:5d3131d1b142 82 if (number >= 10) {
Ksenia 0:5d3131d1b142 83 str[strCnt] = '0' + (number % 100) / 10;
Ksenia 0:5d3131d1b142 84 strCnt++;
Ksenia 0:5d3131d1b142 85 }
Ksenia 0:5d3131d1b142 86 str[strCnt] = '.';
Ksenia 0:5d3131d1b142 87 strCnt++;
Ksenia 0:5d3131d1b142 88 str[strCnt] = '0' + (number % 100) / 10;
Ksenia 0:5d3131d1b142 89 strCnt++;
Ksenia 0:5d3131d1b142 90 str[strCnt] = 0;
Ksenia 0:5d3131d1b142 91 }
Ksenia 0:5d3131d1b142 92
Ksenia 0:5d3131d1b142 93
Ksenia 0:5d3131d1b142 94 /**************************************************************************************************************************
Ksenia 0:5d3131d1b142 95 ************************** Transform number of seconds to HH:MM:SS string *************************************************
Ksenia 0:5d3131d1b142 96 **************************************************************************************************************************/
Ksenia 0:5d3131d1b142 97 void Display::CreateStringTime(char *str, uint32_t numberOfSeconds)
Ksenia 0:5d3131d1b142 98 {
Ksenia 0:5d3131d1b142 99 char hrs = (numberOfSeconds / 3600);
Ksenia 0:5d3131d1b142 100 if (hrs < 10) {
Ksenia 0:5d3131d1b142 101 str[0] = '0';
Ksenia 0:5d3131d1b142 102 } else {
Ksenia 0:5d3131d1b142 103 str[0] = '0' + hrs / 10;
Ksenia 0:5d3131d1b142 104 }
Ksenia 0:5d3131d1b142 105 str[1] = '0' + hrs % 10;
Ksenia 0:5d3131d1b142 106 str[2] = ':';
Ksenia 0:5d3131d1b142 107 char minutes = (numberOfSeconds / 60) % 60;
Ksenia 0:5d3131d1b142 108 if (minutes < 10) {
Ksenia 0:5d3131d1b142 109 str[3] = '0';
Ksenia 0:5d3131d1b142 110 } else {
Ksenia 0:5d3131d1b142 111 str[3] = '0' + minutes / 10;
Ksenia 0:5d3131d1b142 112 }
Ksenia 0:5d3131d1b142 113 str[4] = '0' + minutes % 10;
Ksenia 0:5d3131d1b142 114 str[5] = ':';
Ksenia 0:5d3131d1b142 115 char sec = numberOfSeconds % 60;
Ksenia 0:5d3131d1b142 116 if (sec < 10) {
Ksenia 0:5d3131d1b142 117 str[6] = '0';
Ksenia 0:5d3131d1b142 118 } else {
Ksenia 0:5d3131d1b142 119 str[6] = '0' + sec / 10;
Ksenia 0:5d3131d1b142 120 }
Ksenia 0:5d3131d1b142 121 str[7] = '0' + sec % 10;
Ksenia 0:5d3131d1b142 122 str[8] = 0;
Ksenia 0:5d3131d1b142 123 }