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

myFunctions.cpp@12:7772974713ac, 2016-10-08 (annotated)

Committer:
tanasaro10
Date:
Sat Oct 08 10:30:15 2016 +0000
Revision:
12:7772974713ac
Parent:
11:baafa4f7a15e 
Version ready for use to exercise.

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 11:baafa4f7a15e 30 void search_latest_in_flash(mdate_time_t * outDateTime){
tanasaro10 11:baafa4f7a15e 31 uint8_t page_nr, sizeB,temp[6];
tanasaro10 9:303d3628986a 32 uint16_t max_page=(uint16_t)MAX_PAGE_NUM+1u;
tanasaro10 9:303d3628986a 33 int retVal;
tanasaro10 11:baafa4f7a15e 34 mdate_time_t max_datetime={16,1,1,0,0,0}, inv_datetime={255,255,255,255,255,255};
tanasaro10 9:303d3628986a 35
tanasaro10 11:baafa4f7a15e 36 sizeB=sizeof(mdate_time_t);
tanasaro10 9:303d3628986a 37 uint32_t* p_curr_addr;
tanasaro10 9:303d3628986a 38
tanasaro10 9:303d3628986a 39 for (page_nr = MAX_PAGE_NUM; page_nr>= MIN_PAGE_NUM; page_nr --){
tanasaro10 9:303d3628986a 40 p_curr_addr= (uint32_t *)((uint16_t)BLE_FLASH_PAGE_SIZE * page_nr);
tanasaro10 9:303d3628986a 41 p_curr_addr += 2; // skip the magic number and the word count
tanasaro10 11:baafa4f7a15e 42
tanasaro10 11:baafa4f7a15e 43 memcpy(temp, p_curr_addr, sizeB);
tanasaro10 11:baafa4f7a15e 44 retVal = memcmp(&temp, &inv_datetime, sizeB);
tanasaro10 9:303d3628986a 45 if (retVal!=0) {
tanasaro10 11:baafa4f7a15e 46 retVal = memcmp(&temp, &max_datetime, sizeB);
tanasaro10 11:baafa4f7a15e 47 if (retVal >0) {
tanasaro10 11:baafa4f7a15e 48 memcpy(&max_datetime, &temp, sizeB);
tanasaro10 11:baafa4f7a15e 49 max_page= page_nr;
tanasaro10 9:303d3628986a 50 }
tanasaro10 11:baafa4f7a15e 51 }
tanasaro10 9:303d3628986a 52 }
tanasaro10 9:303d3628986a 53
tanasaro10 11:baafa4f7a15e 54 memcpy(outDateTime, &max_datetime, sizeB);
tanasaro10 9:303d3628986a 55 g_currPage= (uint8_t)(max_page-1u);
tanasaro10 9:303d3628986a 56 }
tanasaro10 9:303d3628986a 57
tanasaro10 11:baafa4f7a15e 58 void update_time(mdatetime_manager_t* myDateTimeVar, uint16_t tseconds){
tanasaro10 11:baafa4f7a15e 59 //memcpy(&myDateTimeVar->newDateTime, &myDateTimeVar->currentDateTime, sizeof(mdate_time_t));
tanasaro10 11:baafa4f7a15e 60 if (myDateTimeVar->updateDateTime ==false){
tanasaro10 11:baafa4f7a15e 61 myDateTimeVar->newDateTime.seconds = (myDateTimeVar->currentDateTime.seconds + tseconds)% 60;
tanasaro10 11:baafa4f7a15e 62 myDateTimeVar->newDateTime.minutes = (myDateTimeVar->currentDateTime.minutes + ((tseconds + myDateTimeVar->currentDateTime.seconds) / 60))%60;
tanasaro10 11:baafa4f7a15e 63 if (myDateTimeVar->newDateTime.minutes< myDateTimeVar->currentDateTime.minutes ) {
tanasaro10 11:baafa4f7a15e 64 myDateTimeVar->currentDateTime.hours++;
tanasaro10 11:baafa4f7a15e 65 }
tanasaro10 11:baafa4f7a15e 66 myDateTimeVar->newDateTime.hours = (myDateTimeVar->currentDateTime.hours + (tseconds / 3600+myDateTimeVar->newDateTime.minutes/60))%24;
tanasaro10 11:baafa4f7a15e 67 if (myDateTimeVar->newDateTime.hours < myDateTimeVar->currentDateTime.hours){
tanasaro10 12:7772974713ac 68 myDateTimeVar->newDateTime.day = (myDateTimeVar->currentDateTime.day + 1)%(eNrDaysPerMonth[myDateTimeVar->currentDateTime.month-1]+1);
tanasaro10 12:7772974713ac 69 if (myDateTimeVar->newDateTime.day == 0){
tanasaro10 12:7772974713ac 70 myDateTimeVar->newDateTime.day ++;
tanasaro10 12:7772974713ac 71 }
tanasaro10 11:baafa4f7a15e 72 if (myDateTimeVar->newDateTime.day < myDateTimeVar->currentDateTime.day ){
tanasaro10 12:7772974713ac 73 myDateTimeVar->newDateTime.month = (myDateTimeVar->currentDateTime.month+ 1)%13;
tanasaro10 12:7772974713ac 74 if (myDateTimeVar->newDateTime.month ==0){
tanasaro10 12:7772974713ac 75 myDateTimeVar->newDateTime.month++;
tanasaro10 12:7772974713ac 76 }
tanasaro10 11:baafa4f7a15e 77 if (myDateTimeVar->newDateTime.month< myDateTimeVar->currentDateTime.month){
tanasaro10 11:baafa4f7a15e 78 myDateTimeVar->newDateTime.year = (myDateTimeVar->currentDateTime.year+ 1);
tanasaro10 11:baafa4f7a15e 79 }
tanasaro10 11:baafa4f7a15e 80 }
tanasaro10 11:baafa4f7a15e 81 }
tanasaro10 11:baafa4f7a15e 82 } else {
tanasaro10 11:baafa4f7a15e 83 myDateTimeVar->updateDateTime =false;
tanasaro10 9:303d3628986a 84 }
tanasaro10 9:303d3628986a 85
tanasaro10 11:baafa4f7a15e 86 if (myDateTimeVar->updateDateTime ==true){ // there is a new Date ?
tanasaro10 11:baafa4f7a15e 87 myDateTimeVar->updateDateTime =true;
tanasaro10 9:303d3628986a 88 }
tanasaro10 11:baafa4f7a15e 89 memcpy(&myDateTimeVar->currentDateTime,&myDateTimeVar->newDateTime, sizeof(mdate_time_t));
tanasaro10 9:303d3628986a 90 }
tanasaro10 9:303d3628986a 91
tanasaro10 9:303d3628986a 92
tanasaro10 9:303d3628986a 93 int buzz_int(PwmOut* buzzer, uint8_t period, uint8_t duty_cycle){
tanasaro10 9:303d3628986a 94 int retVal = 0;
tanasaro10 9:303d3628986a 95 if ((duty_cycle<10)&&(period<10)){
tanasaro10 9:303d3628986a 96 if (period!=0) {
tanasaro10 9:303d3628986a 97 buzzer->period_ms(period);
tanasaro10 9:303d3628986a 98 *buzzer = (10.0 - (float)duty_cycle)/9.0;
tanasaro10 9:303d3628986a 99 } else {
tanasaro10 9:303d3628986a 100 *buzzer = 0;
tanasaro10 9:303d3628986a 101 }
tanasaro10 9:303d3628986a 102 } else {
tanasaro10 9:303d3628986a 103 retVal=-1;
tanasaro10 9:303d3628986a 104 }
tanasaro10 9:303d3628986a 105 return retVal;
tanasaro10 9:303d3628986a 106 }
tanasaro10 9:303d3628986a 107
tanasaro10 9:303d3628986a 108 void assert_error_app(bool condition, Serial *pc, uint16_t error, uint16_t line, const char* file){
tanasaro10 9:303d3628986a 109 if (condition) {
tanasaro10 9:303d3628986a 110 pc->printf("App err = %d, line = %d, file = %s\r\n",error, line, file);
tanasaro10 9:303d3628986a 111 }
tanasaro10 9:303d3628986a 112 }