Permalink
Cannot retrieve contributors at this time
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
pico_examples/rtc/src/main.adb
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
58 lines (48 sloc)
1.39 KB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
-- | |
-- Copyright 2021 (C) Jeremy Grosser | |
-- | |
-- SPDX-License-Identifier: BSD-3-Clause | |
-- | |
with HAL.Real_Time_Clock; use HAL.Real_Time_Clock; | |
with RP.Timer; use RP.Timer; | |
with RP.Device; | |
with RP.Clock; | |
with RP.GPIO; | |
with Pico; | |
-- Helper methods for formatting date and time as an ISO 8601 string | |
with Text_Format; | |
with Ada.Text_IO; | |
procedure Main is | |
-- Try to trigger a Y2K bug | |
Date : RTC_Date := | |
(Day_Of_Week => Sunday, | |
Year => 99, | |
Month => December, | |
Day => 31); | |
Time : RTC_Time := | |
(Hour => 23, | |
Min => 59, | |
Sec => 50); | |
T : RP.Timer.Time; | |
begin | |
RP.Clock.Initialize (Pico.XOSC_Frequency); | |
RP.Device.Timer.Enable; | |
Pico.LED.Configure (RP.GPIO.Output); | |
RP.Device.RTC.Configure; | |
RP.Device.RTC.Set (Time, Date); | |
-- Wait a couple seconds after setting the time to ensure it reads back | |
-- correctly. | |
T := RP.Timer.Clock + Ticks_Per_Second * 2; | |
RP.Device.Timer.Delay_Until (T); | |
loop | |
RP.Device.RTC.Get (Time, Date); | |
-- Printing over semihosting I/O is slow enough that we occasionally | |
-- lose a second. If you're using this for anything important, consider | |
-- using a UART for output instead. | |
Ada.Text_IO.Put_Line | |
(Text_Format.To_String (Time, Date)); | |
Pico.LED.Toggle; | |
T := T + Ticks_Per_Second; | |
RP.Device.Timer.Delay_Until (T); | |
end loop; | |
end Main; |