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Author SHA1 Message Date
Alissa Rao 2aa59bb341
Implement a sync API for working with global mutable state. (#107) 
* Add IntelliJ workspace files to the .gitignore.

* Add a simple make_example script for Linux.

* Create a `sync` module with many GBA-specific sync utilties.

* Fix overflow error in debug mode in the hello_world crate.

* Fixes to DMA.

* Code cleanup for the sync module.

* Run rustfmt on new sync code.

* Fix up some names and documentation in the sync module.

* Add a few changes suggested by thomcc for the locks.

* Added needed compiler fences to `InitOnce::try_get`.
* Change the error in `RawMutex::raw_unlock` to better reflect the cause.

* Add a proper issue link to the __sync_synchronize hack.

* Disable interrupts during `InitOnce::try_get`.

* Fix some bad wording in the comments for `InitOnce::try_get`

* Use the new target in `cfg` checks to see if we're on GBA.

* Change registers used for transfer_align4_arm for the different target.

* Cleanup on sync_api changes for the target change.
 2021-02-21 16:57:26 -07:00
Michael Mogenson 00897a0657
SioSerial improvements (#100) 
Make a few improvements to the SioSerial struct:
- Have init() return Self. It's more ergonomic to create and initialize
the empty struct in one call.
- Enable FIFO. The GBA has a 4-byte UART FIFO. This makes it less
likely to lose received bytes.
- Derive Clone on SioSerial so it can be split and shared with an
interrupt.
- Derive Debug on SioError so results can be unwrapped.
 2021-01-12 14:42:56 -07:00
Michael Mogenson 51c870281c
Add Serial and GPIO registers and implement embedded_hal traits (#96) 
* Add Serial and GPIO registers and implement embedded_hal traits

Use VolAddress and phantom_fields to populate the SIOCNT, RCNT, and
SIODATA8 registers. Implement embedded_hal serial traits around an empty
SioSerial struct.

Hide serial read and write traits behind a "serial" feature flag
to make embedded-hal and nb dependencies optional.

* UART echo example

Enable the serial feature for this example. Provide a pinout
diagram to assist people with wiring up a USB to UART adapter.
 2020-12-26 11:28:07 -07:00
Lokathor ac031627c8 Update IME to be u16 sized, avoid newtype_enum 
newtype_enum makes an enum, but an enum can be UB if it's no a valid bit pattern. We should avoid having registers mapped to enum types.
 2019-02-14 22:11:23 -07:00
Lokathor 0f031e6435 bitmap video explanation 2019-02-14 21:18:21 -07:00
Lokathor 3b688b907c Get all the code lined up 2019-02-14 19:39:34 -07:00
Lokathor 89b7cc0eaa Merge branch 'dev' into lokathor 2019-02-14 19:17:02 -07:00
Lokathor 273a8bd676 commit the changes 2019-02-14 19:16:09 -07:00
Ian Pickering d15168068b Add __IRQ_HANDLER symbol to hello_magic example 
The hello_magic example does not depend on the gba crate, but the crt0
now assumes that the symbol for the interrupt handler which is defined
in it will be present, as interrupts ought to be handled in some
manner. If neither the symbol or the crate are added then the linker
will give an error, but if anything in the gba crate is used also then
the symbol will be brought in, so defining it manually also would
cause a duplicate definition error. In the future something like
cortex-m-rt's `exception!` macro could be used to better document how
to define this symbol (all their examples depend on at least one
symbol from their runtime library, so they don't have this problem).
 2019-02-13 18:27:27 -08:00
Ian Pickering 0d654032bb Add module for interrupt request (IRQ) handling 2019-02-13 17:08:57 -08:00
Lokathor c360c2dce4 example updates 2019-02-13 01:47:12 -07:00
Lokathor 2929076e55 jump to 120 
Picking this because it makes the `hello_magic.rs` lines all stay on one line.
 2019-02-12 09:42:17 -07:00
Lokathor b67bdc80a1 io registers lesson, +cargo fmt with lin length down to 100 2019-02-11 21:59:17 -07:00
Lokathor 6466a53475 Move to the phantom_fields! proc-macro 2018-12-29 00:06:08 -07:00
Lokathor f99da154e8 minor fixes 2018-12-27 23:22:48 -07:00
Lokathor e475253dcf small cleanups 2018-12-27 11:51:53 -07:00
Lokathor 72bbe412b6 clearer module organization 2018-12-26 23:13:10 -07:00
Lokathor 6271614335 backgrounds and OAM start 2018-12-26 20:19:53 -07:00
Lokathor d6a6301815 CLOSE to another release 2018-12-25 23:19:16 -07:00
Lokathor 298d45ccfb The BG checker demo runs now! 2018-12-25 16:46:11 -07:00
Lokathor d2260fc117 Move Mode3/4/5 into gba::video::bitmap 2018-12-25 14:44:05 -07:00
Lokathor 51dbb749ef DMA first draft 2018-12-24 15:43:36 -07:00
Lokathor 7d8c82ddbc mgba panic handler 100% safe, justrelease only tho 2018-12-23 15:52:42 -07:00
Lokathor 7ab96c35f2 light cycle is also 100% safe now 2018-12-23 15:10:14 -07:00
Lokathor 35ed03cb44 cleanup, hello world runs 100% safe now 2018-12-23 14:45:38 -07:00
Lokathor b927a348bd sensible goals 2018-12-22 00:26:52 -07:00
Lokathor 4586d2d95f module organization 2018-12-20 18:08:54 -07:00
Lokathor 58d739dd9e fixed point and stuff 2018-12-17 17:00:22 -07:00
Lokathor 779770a187 cleanup and cleanup designations 2018-12-16 20:55:53 -07:00
Lokathor 51d3915dea static asserts 2018-12-15 20:35:57 -07:00
Lokathor ac5353b773 Introduction and Limits chapters updated 2018-12-14 22:57:14 -07:00
Lokathor 00e14960c6 ch 00: rewrite done 2018-12-10 01:48:06 -07:00
Lokathor ad7cac6628 begin re-oganization 2018-12-07 17:06:11 -07:00
Lokathor 9689394d75 checkers! 2018-12-05 21:56:39 -07:00
Lokathor e9b62f1832 more writing, but the demo just shows white 2018-12-04 23:27:35 -07:00
Lokathor b40ee565d0 ready to begin PR 2018-11-29 00:15:41 -07:00
Lokathor 6ae1374412 closer 2018-11-28 18:18:23 -07:00
Lokathor caec27da7b more stuff 2018-11-27 16:58:13 -07:00
Lokathor e6cc23ef30 progress towards an RNG section 2018-11-26 01:35:30 -07:00
Lokathor ca4118b482 final case 2018-11-23 14:55:14 -07:00
Lokathor f225c67d9f commit 2018-11-23 14:48:37 -07:00
Lokathor 423a2f584b better make those examples build 2018-11-21 22:47:43 -07:00
Lokathor fa6bd606d5 reg-backgrounds 2018-11-21 16:49:17 -07:00
Lokathor 445c3b489b describing how tiles work 2018-11-20 02:57:43 -07:00
Lokathor 39176c19ee part of ch3 2018-11-18 22:19:13 -07:00
Lokathor 241fb1746c edits, cleanups, and a goal for ch3 2018-11-17 17:14:42 -07:00
Lokathor 3a355db578 cargo-make Makefile.toml 2018-11-16 00:39:47 -07:00
Lokathor 8aa1bb0065 partial intrinsic work 2018-11-15 01:23:04 -07:00
Lokathor 5b0e2e30a4 more correct example 2018-11-14 19:54:32 -07:00
Lokathor 4060b5d6f1 test your keys! 2018-11-14 19:54:04 -07:00