Enter Standby mode then wake up(only restart) by RTC timer
Dependencies: mbed WakeUp_STM32
see /users/kenjiArai/notebook/standby-mode-current-consumption-on-nucleo-f446re/
main.cpp
- Committer:
- kenjiArai
- Date:
- 2020-03-12
- Revision:
- 2:4793eeeac6d0
- Parent:
- 1:abe49c3395cd
- Child:
- 3:1d19ad5ddf52
File content as of revision 2:4793eeeac6d0:
/* * Mbed Application program * Check Deep Sleep Mode * * Copyright (c) 2020 Kenji Arai / JH1PJL * http://www7b.biglobe.ne.jp/~kenjia/ * https://os.mbed.com/users/kenjiArai/ * Revised: March 12th, 2020 * Revised: March 12th, 2020 */ /* Reference information: https://forums.mbed.com/t/how-to-deep-sleep/7551 Tested on Nucleo-L152RE */ // Include -------------------------------------------------------------------- #include "mbed.h" #include "WakeUp.h" // Definition ----------------------------------------------------------------- // https://keisan.casio.jp/exec/system/1526003938 #define DATE_20200222_222222 1582377742 // 2020/2/22 22:22:22 #if (MBED_MAJOR_VERSION == 5) #define WAIT_MS(x) ThisThread::sleep_for(x) #else #define WAIT_MS(x) wait_ms(x) #endif // Constructor ---------------------------------------------------------------- DigitalIn my_sw(USER_BUTTON); DigitalOut myled(LED1,1); Serial pc(USBTX, USBRX); AnalogIn a_in(A0); Timer t; // RAM ------------------------------------------------------------------------ // ROM / Constant data -------------------------------------------------------- // Function prototypes -------------------------------------------------------- void sw_irq(void); void time_enter_mode(void); void chk_and_set_time(char *ptr); int32_t xatoi (char **str, int32_t *res); void get_line (char *buff, int len); void print_revision(void); //------------------------------------------------------------------------------ // Control Program //------------------------------------------------------------------------------ int main() { time_t seconds; char buf[64]; uint32_t t_pass = 0; uint32_t loop_count = 1; float ain; printf("\r\nCheck current consumption at Deep-sleep mode.\r\n"); print_revision(); seconds = time(NULL); if (seconds < DATE_20200220_222222) { strftime(buf, 50, " %B %d,'%y, %H:%M:%S\r\n", localtime(&seconds)); pc.printf("[Time] %s\r\n", buf); time_enter_mode(); } while (my_sw == 0) {;} WAIT_MS(10); while (true) { t.reset(); t.start(); if ((my_sw == 0) || (loop_count > 20)) { DigitalIn dmy0(LED1); DigitalIn dmy1(USBTX); DigitalIn dmy2(USBRX); WakeUp::standby_then_reset(10000); while(true) {;} // never executing this line } ain = a_in.read(); myled = !myled; seconds = time(NULL); strftime(buf, 50, "%H:%M:%S -> ", localtime(&seconds)); pc.printf("%s", buf); pc.printf( "analog = %4.3f, loop_time=%3d, counter=%4d\r\n", ain, t_pass, loop_count++ ); t_pass = t.read_ms(); WAIT_MS(1000 - t_pass); } } void time_enter_mode(void) { char *ptr; char linebuf[64]; pc.printf("\r\nSet time into RTC\r\n"); pc.printf(" e.g. >20 2 22 22 22 22 -> February 22,'20, 22:22:22\r\n"); pc.putc('>'); ptr = linebuf; get_line(ptr, sizeof(linebuf)); pc.printf("\r"); chk_and_set_time(ptr); } 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"); } 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 ); } 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; }