Use the MAXREFDES99 to display the time from a DS3231 RTC. Requires the DS3231 RTC, or a MAXREFDES72 which has the rtc on it.
Dependencies: MAX7219 ds3231 mbed
main.cpp
- Committer:
- j3
- Date:
- 2016-05-31
- Revision:
- 1:ce6a3accca77
- Parent:
- 0:52f9ecc09233
File content as of revision 1:ce6a3accca77:
/*********************************************************************** * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name of Maxim Integrated * Products, Inc. shall not be used except as stated in the Maxim Integrated * Products, Inc. Branding Policy. * * The mere transfer of this software does not imply any licenses * of trade secrets, proprietary technology, copyrights, patents, * trademarks, maskwork rights, or any other form of intellectual * property whatsoever. Maxim Integrated Products, Inc. retains all * ownership rights. **********************************************************************/ #include "mbed.h" #include "ds3231.h" #include "maxrefdes99.h" #include <string> void set_rtc(Ds3231 & rtc); int main(void) { //rtc object Ds3231 rtc(D14, D15); set_rtc(rtc); Max7219 display(D11, D12, D13, D10); //struct for holding MAX7219 configuration data max7219_configuration_t display_config; //configuration data display_config.decode_mode = 0; //no BCD decode display_config.intensity = 0x0F; //max intensity display_config.scan_limit = 0x07; //scan all digits //set number of MAX7219 devices being used display.set_num_devices(4); //config display display.init_display(display_config); //ensure all data registers are 0 display.display_all_off(); display.enable_display(); time_t epoch_time; string str; char time_buff[32]; for(;;) { //get epoch time from rtc epoch_time = rtc.get_epoch(); //format time strftime(time_buff, 32, "%a %b %d %Y %I:%M %p", localtime(&epoch_time)); //assign to str str.assign(time_buff); //find '\n' and remove it if(str.find('\n') != std::string::npos) { str.erase(str.find('\n')); } //append spaces to the end str.append(" "); //print to display print_string(&display, 33, str.c_str()); //shift the display the appropriate number of positions //1 char is 6 columns wide shift_display_left(&display, (str.length()*6), 150); //clear the display all_off(&display); //clears all data in buffer clear_buffer(); wait(0.5); } } //********************************************************************* void set_rtc(Ds3231 & rtc) { //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); //get day from user rtc_calendar.day = get_user_input("\nPlease enter day of week, 1 for Sunday (1-7): ", 7); //get day of month from user rtc_calendar.date = get_user_input("\nPlease enter day of month (1-31): ", 31); //get month from user rtc_calendar.month = get_user_input("\nPlease enter the month, 1 for January (1-12): ", 12); //get year from user rtc_calendar.year = get_user_input("\nPlease enter the year (0-99): ", 99); //Get time mode rtc_time.mode = get_user_input("\nWhat time mode? 1 for 12hr 0 for 24hr: ", 1); if(rtc_time.mode) { //Get AM/PM status rtc_time.am_pm = get_user_input("\nIs it AM or PM? 0 for AM 1 for PM: ", 1); //Get hour from user rtc_time.hours = get_user_input("\nPlease enter the hour (1-12): ", 12); } else { //Get hour from user rtc_time.hours = get_user_input("\nPlease enter the hour (0-23): ", 23); } //Get minutes from user rtc_time.minutes = get_user_input("\nPlease enter the minute (0-59): ", 59); //Get seconds from user rtc_time.seconds = get_user_input("\nPlease enter the second (0-59): ", 59); rtc.set_time(rtc_time); rtc.set_calendar(rtc_calendar); }