Valentin Tanasa / Mbed 2 deprecated nRF51822_TemperatureEx

This program is given as a sample exercise. It has all the functionality to be used on a BLE Nano device and to connect to SimpleChat application for Android/ iOS from RebBearLab. The aim of the exercise is to read a voltage and then to convert as good as possible the appropriate temperature in Celsius degrees. AI5 pin is considered for reading the voltage for the termistor. The ADC of AI5 is called every second. The function to be updated : update_measurements() from main.cpp file.

Dependencies:   BLE_API mbed nRF51822

Fork of nRF51822_DataLogger_with_Chat by Valentin Tanasa

functions.cpp@9:303d3628986a, 2016-04-25 (annotated)

Committer:
tanasaro10
Date:
Mon Apr 25 19:34:39 2016 +0000
Revision:
9:303d3628986a
Major rework on the code and extended functionality added. Detailed explanations are given in read_me.md file.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tanasaro10 9:303d3628986a 1 #include "myData.h"
tanasaro10 9:303d3628986a 2
tanasaro10 9:303d3628986a 3
tanasaro10 9:303d3628986a 4 uint8_t eNrDaysPerMonth[12]= {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
tanasaro10 9:303d3628986a 5 static uint8_t g_currPage = MAX_PAGE_NUM; // current page in Flash to be write
tanasaro10 9:303d3628986a 6
tanasaro10 9:303d3628986a 7 uint8_t flash_currPage(){
tanasaro10 9:303d3628986a 8 return g_currPage;
tanasaro10 9:303d3628986a 9 }
tanasaro10 9:303d3628986a 10
tanasaro10 9:303d3628986a 11 uint8_t flash_go_nextPage(){
tanasaro10 9:303d3628986a 12 g_currPage --;
tanasaro10 9:303d3628986a 13 if (g_currPage < MIN_PAGE_NUM) {
tanasaro10 9:303d3628986a 14 g_currPage = MAX_PAGE_NUM;
tanasaro10 9:303d3628986a 15 }
tanasaro10 9:303d3628986a 16 return g_currPage;
tanasaro10 9:303d3628986a 17 }
tanasaro10 9:303d3628986a 18
tanasaro10 9:303d3628986a 19
tanasaro10 9:303d3628986a 20 uint8_t flash_prev_N_Page(uint8_t nr_of_pages){
tanasaro10 9:303d3628986a 21 uint8_t retVal;
tanasaro10 9:303d3628986a 22 retVal = g_currPage + nr_of_pages;
tanasaro10 9:303d3628986a 23
tanasaro10 9:303d3628986a 24 if (retVal > MAX_PAGE_NUM ) {
tanasaro10 9:303d3628986a 25 retVal = MIN_PAGE_NUM + (retVal % MAX_PAGE_NUM - 1);
tanasaro10 9:303d3628986a 26 }
tanasaro10 9:303d3628986a 27 return retVal;
tanasaro10 9:303d3628986a 28 }
tanasaro10 9:303d3628986a 29
tanasaro10 9:303d3628986a 30 void save_flash_curr_pageNr(date_t mdata){
tanasaro10 9:303d3628986a 31 uint8_t data2write[4];
tanasaro10 9:303d3628986a 32 memcpy(&data2write,&mdata,sizeof(date_t));
tanasaro10 9:303d3628986a 33 data2write[3] = g_currPage;
tanasaro10 9:303d3628986a 34 ble_flash_word_write((((uint32_t *)((uint16_t)256 * 255)) + 254),*(uint32_t*)data2write);
tanasaro10 9:303d3628986a 35 }
tanasaro10 9:303d3628986a 36
tanasaro10 9:303d3628986a 37 void search_latest_in_flash(date_t * outDate, mtime_t * outTime){
tanasaro10 9:303d3628986a 38 uint8_t page_nr, sizeB;
tanasaro10 9:303d3628986a 39 uint16_t max_page=(uint16_t)MAX_PAGE_NUM+1u;
tanasaro10 9:303d3628986a 40 int retVal;
tanasaro10 9:303d3628986a 41 myDataLogShort_t initialData;
tanasaro10 9:303d3628986a 42 date_t max_date={16,1,1}, inv_date={255,255,255};
tanasaro10 9:303d3628986a 43 mtime_t max_time={0,0,0}, inv_time={255,255,255};
tanasaro10 9:303d3628986a 44
tanasaro10 9:303d3628986a 45 sizeB=sizeof(date_t);
tanasaro10 9:303d3628986a 46 uint32_t* p_curr_addr;
tanasaro10 9:303d3628986a 47
tanasaro10 9:303d3628986a 48 for (page_nr = MAX_PAGE_NUM; page_nr>= MIN_PAGE_NUM; page_nr --){
tanasaro10 9:303d3628986a 49 p_curr_addr= (uint32_t *)((uint16_t)BLE_FLASH_PAGE_SIZE * page_nr);
tanasaro10 9:303d3628986a 50 p_curr_addr += 2; // skip the magic number and the word count
tanasaro10 9:303d3628986a 51 memcpy((uint32_t*)&initialData, p_curr_addr, 6*sizeof(uint32_t));
tanasaro10 9:303d3628986a 52 retVal = memcmp(&initialData.startData.date, &inv_date, sizeB);
tanasaro10 9:303d3628986a 53 if (retVal!=0) {
tanasaro10 9:303d3628986a 54 retVal = memcmp(&initialData.startData.time, &inv_time, sizeB);
tanasaro10 9:303d3628986a 55 if (retVal !=0) {
tanasaro10 9:303d3628986a 56 retVal = memcmp(&initialData.startData.date, &max_date, sizeB);
tanasaro10 9:303d3628986a 57 if (retVal >=0) {
tanasaro10 9:303d3628986a 58 if (retVal>0){
tanasaro10 9:303d3628986a 59 memcpy(&max_date, &initialData.startData.date, sizeB);
tanasaro10 9:303d3628986a 60 max_time.hour = 0;
tanasaro10 9:303d3628986a 61 max_time.min = 0;
tanasaro10 9:303d3628986a 62 max_time.sec = 0;
tanasaro10 9:303d3628986a 63 }
tanasaro10 9:303d3628986a 64 retVal = memcmp(&initialData.startData.time, &max_time, sizeB);
tanasaro10 9:303d3628986a 65 if (retVal >=0) {
tanasaro10 9:303d3628986a 66 memcpy(&max_time, &initialData.startData.time, sizeB);
tanasaro10 9:303d3628986a 67 max_page= page_nr;
tanasaro10 9:303d3628986a 68 }
tanasaro10 9:303d3628986a 69 }
tanasaro10 9:303d3628986a 70
tanasaro10 9:303d3628986a 71 }
tanasaro10 9:303d3628986a 72 }
tanasaro10 9:303d3628986a 73 }
tanasaro10 9:303d3628986a 74
tanasaro10 9:303d3628986a 75 memcpy(outTime, &max_time, sizeB);
tanasaro10 9:303d3628986a 76 memcpy(outDate, &max_date, sizeB);
tanasaro10 9:303d3628986a 77 g_currPage= (uint8_t)(max_page-1u);
tanasaro10 9:303d3628986a 78 }
tanasaro10 9:303d3628986a 79
tanasaro10 9:303d3628986a 80 void load_flash_curr_pageNr(date_t *mdata){
tanasaro10 9:303d3628986a 81 uint8_t l_currPage[4];
tanasaro10 9:303d3628986a 82 date_t lDate;
tanasaro10 9:303d3628986a 83 memcpy(&lDate,mdata,sizeof(date_t));
tanasaro10 9:303d3628986a 84 memcpy(&l_currPage,( ((uint32_t *)(BLE_FLASH_PAGE_SIZE * 255)) + 254),sizeof(uint32_t));
tanasaro10 9:303d3628986a 85
tanasaro10 9:303d3628986a 86 g_currPage = (l_currPage[3]);
tanasaro10 9:303d3628986a 87 memcpy(mdata,&l_currPage,sizeof(date_t));
tanasaro10 9:303d3628986a 88
tanasaro10 9:303d3628986a 89 if (g_currPage< MIN_PAGE_NUM){
tanasaro10 9:303d3628986a 90 g_currPage = MAX_PAGE_NUM;
tanasaro10 9:303d3628986a 91 }
tanasaro10 9:303d3628986a 92
tanasaro10 9:303d3628986a 93 if (mdata->year> 99u){
tanasaro10 9:303d3628986a 94 memcpy(mdata,&lDate,sizeof(date_t));
tanasaro10 9:303d3628986a 95 }
tanasaro10 9:303d3628986a 96 //ble_flash_word_write((uint32_t *)(BLE_FLASH_PAGE_SIZE * MAX_PAGE_NUM),(uint32_t)g_currPage);
tanasaro10 9:303d3628986a 97 }
tanasaro10 9:303d3628986a 98
tanasaro10 9:303d3628986a 99 void update_time(mtime_manager_t* myTimeVar, mdate_manager_t* myDateVar, uint16_t tseconds){
tanasaro10 9:303d3628986a 100 if (myTimeVar->updateTime ==false){
tanasaro10 9:303d3628986a 101 myTimeVar->newTime.sec = (myTimeVar->currentTime.sec + tseconds)% 60;
tanasaro10 9:303d3628986a 102 myTimeVar->newTime.min = (myTimeVar->currentTime.min + ((tseconds + myTimeVar->currentTime.sec) / 60))%60;
tanasaro10 9:303d3628986a 103 if (myTimeVar->newTime.min< myTimeVar->currentTime.min ) {
tanasaro10 9:303d3628986a 104 myTimeVar->currentTime.hour++;
tanasaro10 9:303d3628986a 105 }
tanasaro10 9:303d3628986a 106 myTimeVar->newTime.hour = (myTimeVar->currentTime.hour + (tseconds / 3600+myTimeVar->newTime.min/60))%24;
tanasaro10 9:303d3628986a 107 if (myTimeVar->newTime.hour < myTimeVar->currentTime.hour){
tanasaro10 9:303d3628986a 108 memcpy(&myDateVar->newDate,&myDateVar->currentDate,sizeof(date_t));// fill with default date data
tanasaro10 9:303d3628986a 109
tanasaro10 9:303d3628986a 110 myDateVar->newDate.day = (myDateVar->currentDate.day + 1)%(eNrDaysPerMonth[myDateVar->currentDate.month+1]+1);
tanasaro10 9:303d3628986a 111 if (myDateVar->newDate.day < myDateVar->currentDate.day ){
tanasaro10 9:303d3628986a 112 myDateVar->newDate.month = (myDateVar->currentDate.month+ 1)%13+1;
tanasaro10 9:303d3628986a 113 if (myDateVar->newDate.month< myDateVar->currentDate.month){
tanasaro10 9:303d3628986a 114 myDateVar->newDate.year = (myDateVar->currentDate.year+ 1);
tanasaro10 9:303d3628986a 115 }
tanasaro10 9:303d3628986a 116 }
tanasaro10 9:303d3628986a 117 memcpy(&myDateVar->currentDate,&myDateVar->newDate, sizeof(date_t));
tanasaro10 9:303d3628986a 118 }
tanasaro10 9:303d3628986a 119 memcpy(&myTimeVar->currentTime,&myTimeVar->newTime, sizeof(mtime_t));
tanasaro10 9:303d3628986a 120 } else {
tanasaro10 9:303d3628986a 121 memcpy(&myTimeVar->currentTime,&myTimeVar->newTime, sizeof(mtime_t));
tanasaro10 9:303d3628986a 122 myTimeVar->updateTime =false;
tanasaro10 9:303d3628986a 123 }
tanasaro10 9:303d3628986a 124 if (myDateVar->updateDate ==true){ // there is a new Date ?
tanasaro10 9:303d3628986a 125 memcpy(&myDateVar->currentDate,&myDateVar->newDate, sizeof(date_t));
tanasaro10 9:303d3628986a 126 myDateVar->updateDate =true;
tanasaro10 9:303d3628986a 127 }
tanasaro10 9:303d3628986a 128 }
tanasaro10 9:303d3628986a 129
tanasaro10 9:303d3628986a 130
tanasaro10 9:303d3628986a 131 int buzz_int(PwmOut* buzzer, uint8_t period, uint8_t duty_cycle){
tanasaro10 9:303d3628986a 132 int retVal = 0;
tanasaro10 9:303d3628986a 133 if ((duty_cycle<10)&&(period<10)){
tanasaro10 9:303d3628986a 134 if (period!=0) {
tanasaro10 9:303d3628986a 135 buzzer->period_ms(period);
tanasaro10 9:303d3628986a 136 *buzzer = (10.0 - (float)duty_cycle)/9.0;
tanasaro10 9:303d3628986a 137 } else {
tanasaro10 9:303d3628986a 138 *buzzer = 0;
tanasaro10 9:303d3628986a 139 }
tanasaro10 9:303d3628986a 140 } else {
tanasaro10 9:303d3628986a 141 retVal=-1;
tanasaro10 9:303d3628986a 142 }
tanasaro10 9:303d3628986a 143 return retVal;
tanasaro10 9:303d3628986a 144 }
tanasaro10 9:303d3628986a 145
tanasaro10 9:303d3628986a 146 void assert_error_app(bool condition, Serial *pc, uint16_t error, uint16_t line, const char* file){
tanasaro10 9:303d3628986a 147 if (condition) {
tanasaro10 9:303d3628986a 148 pc->printf("App err = %d, line = %d, file = %s\r\n",error, line, file);
tanasaro10 9:303d3628986a 149 }
tanasaro10 9:303d3628986a 150 }