An example to display some text and graphics on a Waveshare 2.7" ePaper display tri-colour. From Kanjia 2.13" code.
set_RTC.cpp
- Committer:
- mdroberts1243
- Date:
- 2019-12-06
- Revision:
- 0:fc1642aade4a
File content as of revision 0:fc1642aade4a:
/* * Set time into RTC * * Copyright (c) 2019 Kenji Arai / JH1PJL * http://www.page.sannet.ne.jp/kenjia/index.html * http://mbed.org/users/kenjiArai/ * Created: April 27th, 2019 * Revised: June 29th, 2019 */ #include "mbed.h" extern Serial pc; static void chk_and_set_time(char *ptr); static int32_t xatoi (char **str, int32_t *res); static void get_line (char *buff, int len); void time_enter_mode(void) { char *ptr; char linebuf[64]; pc.printf("\r\nSet time into RTC\r\n"); pc.printf(" e.g. >19 6 29 10 11 12 -> June 29th,'19, 10:11:12\r\n"); pc.printf(" If time is fine, just hit enter\r\n"); pc.putc('>'); ptr = linebuf; get_line(ptr, sizeof(linebuf)); pc.printf("\r"); chk_and_set_time(ptr); } static void get_line (char *buff, int len) { char c; uint32_t idx = 0; while(true) { c = pc.getc(); if (c == '\r') { buff[idx++] = c; break; } if ((c == '\b') && idx) { idx--; pc.putc(c); pc.putc(' '); pc.putc(c); } if (((uint8_t)c >= ' ') && (idx < len - 1)) { buff[idx++] = c; pc.putc(c); } } buff[idx] = 0; pc.puts("\r\n"); } static void chk_and_set_time(char *ptr) { int32_t p1; struct tm t; time_t seconds; if (xatoi(&ptr, &p1)) { t.tm_year = (uint8_t)p1 + 100; pc.printf("Year:%d ",p1); xatoi( &ptr, &p1 ); t.tm_mon = (uint8_t)p1 - 1; pc.printf("Month:%d ",p1); xatoi( &ptr, &p1 ); t.tm_mday = (uint8_t)p1; pc.printf("Day:%d ",p1); xatoi( &ptr, &p1 ); t.tm_hour = (uint8_t)p1; pc.printf("Hour:%d ",p1); xatoi( &ptr, &p1 ); t.tm_min = (uint8_t)p1; pc.printf("Min:%d ",p1); xatoi( &ptr, &p1 ); t.tm_sec = (uint8_t)p1; pc.printf("Sec: %d \r\n",p1); } else { return; } seconds = mktime(&t); set_time(seconds); pc.printf( "Date: %04d/%02d/%02d, %02d:%02d:%02d\r\n", t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec ); } static int32_t xatoi (char **str, int32_t *res) { int32_t val; uint8_t c, radix, s = 0; while ((c = **str) == ' ') { (*str)++; } if (c == '-') { s = 1; c = *(++(*str)); } if (c == '0') { c = *(++(*str)); if (c <= ' ') { *res = 0; return 1; } if (c == 'x') { radix = 16; c = *(++(*str)); } else { if (c == 'b') { radix = 2; c = *(++(*str)); } else { if ((c >= '0')&&(c <= '9')) { radix = 8; } else { return 0; } } } } else { if ((c < '1')||(c > '9')) { return 0; } radix = 10; } val = 0; while (c > ' ') { if (c >= 'a') { c -= 0x20; } c -= '0'; if (c >= 17) { c -= 7; if (c <= 9) { return 0; } } if (c >= radix) { return 0; } val = val * radix + c; c = *(++(*str)); } if (s) { val = -val; } *res = val; return 1; }