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Dependencies: mbed SDFileSystem ds3231
Revision 0:8b72e62543ea, committed 2019-01-08
- Comitter:
- sixto94
- Date:
- Tue Jan 08 12:36:57 2019 +0000
- Commit message:
- Mollie data;
Changed in this revision
diff -r 000000000000 -r 8b72e62543ea RTCtester.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/RTCtester.lib Tue Jan 08 12:36:57 2019 +0000 @@ -0,0 +1,1 @@ +http://os.mbed.com/teams/Maxim-Integrated/code/ds3231/#11630748e2f2
diff -r 000000000000 -r 8b72e62543ea SDFileSystem.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Tue Jan 08 12:36:57 2019 +0000 @@ -0,0 +1,1 @@ +http://os.mbed.com/users/mbed_official/code/SDFileSystem/#8db0d3b02cec
diff -r 000000000000 -r 8b72e62543ea main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Tue Jan 08 12:36:57 2019 +0000 @@ -0,0 +1,248 @@ +/******************************************************** + * Real Time Clock + * By Mollie Coleman - University of Bath, 2018 + * + * This code uses a pre-defined library created + * by Justin Jordan which has specified functions + * that can be used to set the time and access it + * + * Hardware: + * 1. mbed LPC1768 + * 2. DS3231MPMB1 Peripheral Module + * 3. CR1025 Battery + * 4. 4x Jumper Cables + * + * Connectivity: (RTC --> mbed) + * J1-3 SCL --> P27 + * J1-4 SDA --> P28 + * J1-5 GND --> GND + * J1-6 VCC --> VOUT + * + * References: + * 1. https://os.mbed.com/components/DS3231/ + * 2. https://os.mbed.com/users/techstep/code + * /DS3231/file/1607610a4ee9/DS3231.cpp/ + * 3. https://os.mbed.com/handbook/Timer + ********************************************************/ + +/*********************************** + * Importing of the required libs * + ***********************************/ +#include "ds3231.h" +#include "iostream" +#include "SDFileSystem.h" +#include "string" +#include "sstream" +#include "inttypes.h" +#include "stdio.h" +#define ESC 0x1B +#define PRIx16 "hx" + +/************************************ + * Defining the ports that the RTC * + * and SD reader is attatched to. * + ************************************/ +Ds3231 rtc(p28, p27); +SDFileSystem sd (p5, p6, p7, p8, "sd"); + +/************************************ + * Creating a timer variable to be * + * used to deal with the time taken * + * to save the data * + ************************************/ +Timer t; + +/************************************ + * This can be updated for more * + * variables, or change the type to * + * suit the needs. These are the * + * variables to be stored in on the * + * SD card in a .txt file * + ************************************/ +float temperature = 0.0; +float uvData = 0.0; +float LUXData = 0.0; +char buffer[12]; + +/******************************************************** + * settingCalTimeVal Funtion + * + * Parameters: + * 1. ds3231_time_t rtc_time + * 2. ds3231_calendar_t rtc_calendar + * + * This funtion is only used when the time + * needs to be set for the first time. Once + * done, this is no longer required as the + * time and date is stored and the RTC keeps + * it up to date. + * + * The data is stored in a tempoary variable, + * temp. A pointer is used and assigned the + * reference point for that specific piece + * of data.The vale of temp is then stored + * at that location in memory. + * + * Once all the assigning and storing of data + * is complete, the time and data are set and + * stored indefinitely. + * + * rtc.set_time() <- Function defined in ds3231.cpp + * rtc.set_calendar() <- Function defined in ds3231.cpp + * If the time/date cannot be set, the function will + * return 1, where the code is then terminated. + * + * (If the time needs to be updated, the numbers in the + * below can be altered accordingly) + ********************************************************/ +void settingCalTimeVal(ds3231_time_t rtc_time, ds3231_calendar_t rtc_calendar) +{ + uint32_t temp; + uint32_t* mem; + bool* mem2; + + temp = 17; + mem = &rtc_time.hours; + *mem = temp; + + temp = 30; + mem = &rtc_time.minutes; + *mem = temp; + + temp = 30; + mem = &rtc_time.seconds; + *mem = temp; + + temp = 0; + mem2 = &rtc_time.mode; + *mem2 = temp; + + temp = 2; + mem = &rtc_calendar.day; + *mem = temp; + + temp = 06; + mem = &rtc_calendar.date; + *mem = temp; + + temp = 11; + mem = &rtc_calendar.month; + *mem = temp; + + temp = 18; + mem = &rtc_calendar.year; + *mem = temp; + + //Setting the time/date and storing it + if(rtc.set_time(rtc_time) || rtc.set_calendar(rtc_calendar)) + { + printf("uh oh"); + exit(0); //terminates the program + } +} + +/* + * Converts the input into a type String + */ +template <typename T> +std::string to_string(T value) +{ + std::ostringstream os; + os << value ; + return os.str() ; +} + +/*********************************************************** + * Main Function + * + * Calls the function that sets the time it it is needed, + * else it is commented out and the time is retrieved. + * + * rtc.get_time() <- Function defined in ds3231.cpp + * rtc.get_calendar() <- Function defined in ds3231.cpp + * These are called if the time has already been + * set and we do not want to over-write what has + * been stored in the memory. + * + * When the mbed is disconencted, it will continue to + * run and update the time. This means, when re-attatched + * the time is what it should be, not the last time it was + * when it was switched off. + ************************************************************/ +int main(void) +{ + time_t epoch_time; + + /* default, use bit masks in ds3231.h for desired operation */ + ds3231_cntl_stat_t rtc_control_status = {0,0}; + ds3231_time_t rtc_time; + ds3231_calendar_t rtc_calendar; + rtc.set_cntl_stat_reg(rtc_control_status); + + /* Uncomment if you want to set the time */ + //settingCalTimeVal(rtc_time, rtc_calendar); + + rtc.get_time(&rtc_time); + rtc.get_calendar(&rtc_calendar); + //std::string CalendarResult = to_string((uint16_t)dates); + //printf("Cal: %lu", (unsigned long)dates); + + /* + * This if statement checks to see if there is a directory already made on the + * sd card and if there is not, then it will create the wanted directory. This + * means that any SD card that is plugged in will have this directory created + * automatically. + */ + DIR* dir = opendir("/sd/data"); + if(dir) + { + printf("The directory already exits"); + } + else + { + mkdir("/sd/data", 0777); + printf("The directory has been created on the SD card"); + } + + /* + * This section deals with the setting of the file name to be the date. This + * is also where the data is stored into the file, in a specific format. + */ + epoch_time = rtc.get_epoch(); + strftime(buffer, 32, "%I:%M:%S", localtime(&epoch_time)); + + struct tm tm = *localtime(&epoch_time); + double date = tm.tm_mday; + double month = tm.tm_mon + 1; + double year = tm.tm_year + 1900; + std::string dateS = to_string(date); + std::string monthS = to_string(month); + std::string yearS = to_string(year); + + //Setting the filename to be the date in the format date-month-year + std::string fileNameS = "/sd/data/" + dateS + "-" + monthS + "-" + yearS + ".txt"; + const char *fileNameC = fileNameS.c_str(); + FILE *out_file = fopen(fileNameC, "w"); + + if(out_file == NULL) + { + error("Could not open file for write\n"); + } + + fseek(out_file, 0, SEEK_END); // goto end of file + if(ftell(out_file) == 0) + { + fprintf(out_file, "-----------------------------------------------\r\n| Time | Temperature | UV Data | LUX Data |\r\n-----------------------------------------------\r\n"); + } + + if(temperature != 0 && uvData != 0 && LUXData != 0) + { + fseek(out_file, 0, SEEK_END); + epoch_time = rtc.get_epoch(); + strftime(buffer, 32, "%I:%M:%S %p\n", localtime(&epoch_time)); + + fprintf(out_file, "| %s | %f | UV Data | LUX Data |\r\n-----------------------------------------------\r\n", buffer, temperature); + } + printf("Finished writing to the file"); + fclose(out_file); +} \ No newline at end of file
diff -r 000000000000 -r 8b72e62543ea mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Jan 08 12:36:57 2019 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/3a7713b1edbc \ No newline at end of file