An example to display some text and graphics on a Waveshare 2.7" ePaper display tri-colour. From Kanjia 2.13" code.
Diff: set_RTC.cpp
- Revision:
- 0:fc1642aade4a
diff -r 000000000000 -r fc1642aade4a set_RTC.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/set_RTC.cpp Fri Dec 06 23:31:49 2019 +0000 @@ -0,0 +1,159 @@ +/* + * 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; +} + +