To find a date in the future there is the 'usual' solution with python datetime module. Which is not available on micropython.
What could be done, brute force approach:
- build an array of (year,month,day) for the next 10 years or so
- grab the current (year, month, day) from the RTC
- search this current date in the array. Then move five positions ahead and you have a date in the future.
as large array are difficult to handle in micropython, I have written the dates to a file 't.dat', sample:In micropython, read the file into array and search with the current date.The code in regular python to produce some days:Optimizations possible, of course.
What could be done, brute force approach:
- build an array of (year,month,day) for the next 10 years or so
- grab the current (year, month, day) from the RTC
- search this current date in the array. Then move five positions ahead and you have a date in the future.
as large array are difficult to handle in micropython, I have written the dates to a file 't.dat', sample:
Code:
2024, 11, 272024, 11, 282024, 11, 292024, 11, 302024, 12, 12024, 12, 22024, 12, 3Code:
import micropythonimport gcimport timemicropython.mem_info()iconversion = []t0 = time.ticks_ms()with open("t.dat", "rt") as f: cnt = 0 while True: line = f.readline() cnt += 1 # print(line) if len(line) == 0: break elements = line.split(",") le = (int(elements[0]),int(elements[1]),int(elements[2]) ) iconversion.append(le) # memory cleanup if cnt%16==0: gc.collect()micropython.mem_info()t1 = time.ticks_ms()print("load", time.ticks_diff(t1,t0)) # prox 6sec on a picot0 = time.ticks_ms()# a sample current = (2024, 12, 6)for idx,c in enumerate(iconversion): if c[0] == current[0] and c[1] == current[1] and c[2] == current[2]: print("found", idx) print(iconversion[idx+5]) breakt1 = time.ticks_ms()print("search", time.ticks_diff(t1,t0))Code:
import datetimet = datetime.date(2024,11,27)delta_1 = datetime.timedelta(days=1)for _ in range(365*10): print( f"{t.year}, {t.month}, {t.day}") t = t+delta_1Statistics: Posted by ghp — Wed Nov 27, 2024 11:43 am