Improve RTC support, implement RTC write command#205
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sp1187 merged 2 commits inton64dev:masterfrom Sep 4, 2021
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* Set local time offset when writing to Joybus or 64DD RTC. * Refactor get_local_time to use ISO C Time APIs. Special thanks to @jago85 and @LuigiBlood for their research!
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The Joybus commands to read/write to RTC are based off of the UltraPIF implementation (thanks @jago85!)
The N64DD commands to read/write to RTC are based off of LuigiBlood's research (thanks @LuigiBlood)
Note that RTC writes are currently not persistent after the emulator quits and will always revert to system local time on the next launch.
Changes to
get_local_timeget_local_timenow supports an offset (in seconds) so that the RTC clock can be adjusted relative to local time.Note that the implementation of getting the operating system time has been unified using ISO C Time functions; I have made a best-effort to implement this for Windows but I do not run Windows so I have not tested it. I would greatly appreciate it if a Windows user could build this and run my test ROM.
Test ROM
rtctest.zip (For more information about this test ROM, please see DragonMinded/libdragon#152)
Note that the test ROM does not currently support the N64DD RTC, you can test reading/writing to the 64DD RTC using the DD IPL ROM (holding down A while booting).