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

Committer:
tanasaro10
Date:
2016-10-08
Revision:
12:7772974713ac
Parent:
11:baafa4f7a15e

File content as of revision 12:7772974713ac:

#include "myData.h"


uint8_t eNrDaysPerMonth[12]= {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
static uint8_t g_currPage = MAX_PAGE_NUM;  // current page in Flash to be write

uint8_t flash_currPage(){
    return g_currPage;    
}

uint8_t flash_go_nextPage(){
    g_currPage --;
    if (g_currPage < MIN_PAGE_NUM) {
        g_currPage = MAX_PAGE_NUM;
    }
    return g_currPage;    
}


uint8_t flash_prev_N_Page(uint8_t nr_of_pages){
    uint8_t retVal;
    retVal = g_currPage + nr_of_pages;
    
    if (retVal > MAX_PAGE_NUM ) {
        retVal = MIN_PAGE_NUM + (retVal % MAX_PAGE_NUM - 1);
    }
    return retVal;    
}

void search_latest_in_flash(mdate_time_t * outDateTime){
    uint8_t page_nr, sizeB,temp[6];
    uint16_t max_page=(uint16_t)MAX_PAGE_NUM+1u;
    int retVal;
    mdate_time_t max_datetime={16,1,1,0,0,0}, inv_datetime={255,255,255,255,255,255};
    
    sizeB=sizeof(mdate_time_t);
    uint32_t* p_curr_addr;
    
    for (page_nr = MAX_PAGE_NUM; page_nr>= MIN_PAGE_NUM; page_nr --){
        p_curr_addr= (uint32_t *)((uint16_t)BLE_FLASH_PAGE_SIZE * page_nr);
        p_curr_addr += 2; // skip the magic number and the word count                
        
        memcpy(temp, p_curr_addr, sizeB);        
        retVal = memcmp(&temp, &inv_datetime, sizeB);
        if (retVal!=0) {
            retVal  = memcmp(&temp, &max_datetime, sizeB);
                if (retVal >0) {
                        memcpy(&max_datetime, &temp, sizeB);
                        max_page= page_nr;
                }
        }
    }
   
    memcpy(outDateTime, &max_datetime, sizeB);    
    g_currPage= (uint8_t)(max_page-1u);
}

void update_time(mdatetime_manager_t* myDateTimeVar, uint16_t tseconds){
    //memcpy(&myDateTimeVar->newDateTime, &myDateTimeVar->currentDateTime, sizeof(mdate_time_t));    
    if (myDateTimeVar->updateDateTime ==false){
        myDateTimeVar->newDateTime.seconds = (myDateTimeVar->currentDateTime.seconds + tseconds)% 60; 
        myDateTimeVar->newDateTime.minutes = (myDateTimeVar->currentDateTime.minutes + ((tseconds + myDateTimeVar->currentDateTime.seconds) / 60))%60;
        if (myDateTimeVar->newDateTime.minutes< myDateTimeVar->currentDateTime.minutes ) { 
            myDateTimeVar->currentDateTime.hours++;
        }
        myDateTimeVar->newDateTime.hours = (myDateTimeVar->currentDateTime.hours + (tseconds / 3600+myDateTimeVar->newDateTime.minutes/60))%24;
        if (myDateTimeVar->newDateTime.hours < myDateTimeVar->currentDateTime.hours){
            myDateTimeVar->newDateTime.day = (myDateTimeVar->currentDateTime.day + 1)%(eNrDaysPerMonth[myDateTimeVar->currentDateTime.month-1]+1);
            if (myDateTimeVar->newDateTime.day == 0){
                myDateTimeVar->newDateTime.day ++; 
            }
            if (myDateTimeVar->newDateTime.day < myDateTimeVar->currentDateTime.day ){
                myDateTimeVar->newDateTime.month = (myDateTimeVar->currentDateTime.month+ 1)%13;
                if (myDateTimeVar->newDateTime.month ==0){
                        myDateTimeVar->newDateTime.month++;
                    }
                if (myDateTimeVar->newDateTime.month< myDateTimeVar->currentDateTime.month){
                    myDateTimeVar->newDateTime.year = (myDateTimeVar->currentDateTime.year+ 1);
                }
            }         
        }        
    } else {        
        myDateTimeVar->updateDateTime =false;
    }
    
    if (myDateTimeVar->updateDateTime ==true){  // there is a new Date ?        
        myDateTimeVar->updateDateTime =true;
    }
    memcpy(&myDateTimeVar->currentDateTime,&myDateTimeVar->newDateTime, sizeof(mdate_time_t));    
}


int buzz_int(PwmOut* buzzer, uint8_t period, uint8_t duty_cycle){
    int retVal = 0;
    if ((duty_cycle<10)&&(period<10)){
        if (period!=0) {        
            buzzer->period_ms(period);
            *buzzer = (10.0 - (float)duty_cycle)/9.0;        
        } else {
            *buzzer = 0;
        }
    } else {
        retVal=-1;
    }
    return retVal;
}

void assert_error_app(bool condition, Serial *pc, uint16_t error, uint16_t line, const char* file){
    if (condition) {
        pc->printf("App err = %d, line = %d, file = %s\r\n",error, line, file);
    }
}