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98 lines
3.1 KiB
C++
98 lines
3.1 KiB
C++
/* DateStrings.cpp
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* Definitions for date strings for use with the Time library
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*
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* Updated for Arduino 1.5.7 18 July 2014
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*
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* No memory is consumed in the sketch if your code does not call any of the string methods
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* You can change the text of the strings, make sure the short strings are each exactly 3 characters
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* the long strings can be any length up to the constant dt_MAX_STRING_LEN defined in Time.h
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*
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*/
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#if defined(__AVR__)
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#include <avr/pgmspace.h>
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#else
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// for compatiblity with Arduino Due and Teensy 3.0 and maybe others?
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#define PROGMEM
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#define PGM_P const char *
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#define pgm_read_byte(addr) (*(const unsigned char *)(addr))
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#define pgm_read_word(addr) (*(const unsigned char **)(addr))
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#define strcpy_P(dest, src) strcpy((dest), (src))
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#endif
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#include <string.h> // for strcpy_P or strcpy
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#include "Time.h"
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// the short strings for each day or month must be exactly dt_SHORT_STR_LEN
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#define dt_SHORT_STR_LEN 3 // the length of short strings
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static char buffer[dt_MAX_STRING_LEN+1]; // must be big enough for longest string and the terminating null
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const char monthStr0[] PROGMEM = "";
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const char monthStr1[] PROGMEM = "January";
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const char monthStr2[] PROGMEM = "February";
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const char monthStr3[] PROGMEM = "March";
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const char monthStr4[] PROGMEM = "April";
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const char monthStr5[] PROGMEM = "May";
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const char monthStr6[] PROGMEM = "June";
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const char monthStr7[] PROGMEM = "July";
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const char monthStr8[] PROGMEM = "August";
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const char monthStr9[] PROGMEM = "September";
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const char monthStr10[] PROGMEM = "October";
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const char monthStr11[] PROGMEM = "November";
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const char monthStr12[] PROGMEM = "December";
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const PROGMEM char * const PROGMEM monthNames_P[] =
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{
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monthStr0,monthStr1,monthStr2,monthStr3,monthStr4,monthStr5,monthStr6,
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monthStr7,monthStr8,monthStr9,monthStr10,monthStr11,monthStr12
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};
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const char monthShortNames_P[] PROGMEM = "ErrJanFebMarAprMayJunJulAugSepOctNovDec";
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const char dayStr0[] PROGMEM = "Err";
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const char dayStr1[] PROGMEM = "Sunday";
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const char dayStr2[] PROGMEM = "Monday";
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const char dayStr3[] PROGMEM = "Tuesday";
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const char dayStr4[] PROGMEM = "Wednesday";
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const char dayStr5[] PROGMEM = "Thursday";
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const char dayStr6[] PROGMEM = "Friday";
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const char dayStr7[] PROGMEM = "Saturday";
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const PROGMEM char * const PROGMEM dayNames_P[] =
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{
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dayStr0,dayStr1,dayStr2,dayStr3,dayStr4,dayStr5,dayStr6,dayStr7
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};
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const char dayShortNames_P[] PROGMEM = "ErrSunMonTueWedThuFriSat";
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/* functions to return date strings */
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char* monthStr(uint8_t month)
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{
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strcpy_P(buffer, (PGM_P)pgm_read_word(&(monthNames_P[month])));
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return buffer;
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}
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char* monthShortStr(uint8_t month)
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{
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for (int i=0; i < dt_SHORT_STR_LEN; i++)
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buffer[i] = pgm_read_byte(&(monthShortNames_P[i+ (month*dt_SHORT_STR_LEN)]));
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buffer[dt_SHORT_STR_LEN] = 0;
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return buffer;
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}
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char* dayStr(uint8_t day)
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{
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strcpy_P(buffer, (PGM_P)pgm_read_word(&(dayNames_P[day])));
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return buffer;
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}
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char* dayShortStr(uint8_t day)
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{
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uint8_t index = day*dt_SHORT_STR_LEN;
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for (int i=0; i < dt_SHORT_STR_LEN; i++)
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buffer[i] = pgm_read_byte(&(dayShortNames_P[index + i]));
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buffer[dt_SHORT_STR_LEN] = 0;
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return buffer;
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}
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