Homebrew noob question

[msmalik681]

This may seem like a silly question but how do I get windows versions of the devkitPPC and libOGC I used devkitProUpdater-3.0.3 but there was no option to select what version to download. I just want to update libfat so it can read from a usb correctly.

Is there any way to check from the current devkitpro folder what revision it is using ?

The project I want to update can be found on github under "DCurrent" "openbor"

 

[Wiimpathy]

This is not a silly question at all. The devkit is now using pacman : https://devkitpro.org/wiki/devkitPro_pacman
The devkitPPC binaries are not on sourceforge anymore. On github, only the latest ones are available. This is very annoying... I don't know if you can chose the version with pacman. Anyway, here are some links :
https://github.com/devkitPro/libfat/releases
https://github.com/devkitPro/buildscripts/releases
https://github.com/devkitPro/libogc/releases
The latest libogc has a nasty bug. There's a fix in the pull request.

To check DevkitPPC version, open cmd, go to /devkitPRO/devkitPPC/bin and type powerpc-eabi-gcc.exe -v.
For libogc : /devkitPRO/libogc/include/ogc/libversion.h

And I just saw this answer from Wintermute : https://github.com/devkitPro/buildscripts/issues/29
Mirrors of previous devkit/liboc would be very useful. Sometimes, you can't spent hours debugging errors introduced by the libs. The errors could also be too low level for homebrew developpers. The new libs don't add huge improvements or new hardware support anyway. Well, there are many reasons but it seems it's a lost cause.

 

[msmalik681]

libOGC Release 1.8.12 and devkitPPC release 27

Are these good stable releases ?

When the source code tries to access the "usb:/" using libfat it crashes the wii how to I fix this it can access "sd:/" without any problems.

 

[Wiimpathy]

I don't know, I've used r26 for a long time then r28. R29+ supports WiiU pro controller... but you'll have to adapt the code.

About the usb crash, you could try adding IOS_ReloadIOS(58) before fatInitDefault(). You could also add usleep to be sure the drive is mounted.

 

[msmalik681]

I tried to add both the the ios_reload and usleep but I still got a black screen with "exception (DSI) occurred!" with a screen full of numbers attached the file if you can see what I am doing wrong please help.

 

[nulln]

I tried to add both the the ios_reload and usleep but I still got a black screen with "exception (DSI) occurred!" with a screen full of numbers attached the file if you can see what I am doing wrong please help.

if you're getting an error with usleep, try adding this to the file that gives you the error:

#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>

 

[Wiimpathy]

Are you sure you're building the dol with libfat? Because in the Makefile, Wii section there's BUILD_ELM = 1. But even if you change it to BUILD_ELM = 0 it will still try to compile with libelm. Here's why :
You're testing with ifdef BUILD_ELM. The problem is that it will always be true since ifdef only test the existence of the variable. You should use ifeq ($(BUILD_ELM), 1) to test the value instead.
Here's a good example here : https://stackoverflow.com/questions...-preprocessor-directives-if-and-ifdef#3803108

I've tried with devkitPPC 27 like you (but with linux), libogc 1.8.15, libfat 1.0.14 and your libvorbisidec. Usb seems to work without changing anything related to libfat. By the way, you don't need to unmount usb at startup. Only a delay and the reload should be enough, look at how it's done in Genesis Plus Gx : https://github.com/ekeeke/Genesis-Plus-GX/blob/master/gx/main.c

I've started with devkitppc 29 so I've changed stricmp to strcasecmp etc. Anyway, here's test dol + source code:

Openbor-wii_usb-test

source

Look for my pseudo wiimpathy in the source to see my initial changes. You still have to add the delay etc.
I almost forgot but years ago, I've made a wiiflow plugin for openbor (quick hack) and had this usb issue. Maybe you're also interested in adding proper plugin support?

 

[msmalik681]

@Wiimpathy
Thanks you are very helpful i managed to get it working on the current build by removing any reference to libelm in both the wiiport.c and the makefile it loaded from usb without any issues made me so happy I wanted to cry lol.

Now my main issue is adding dynamic directories what I mean is when the engine is loaded have a script to check what path is was loaded from is sdl they say basepath if I could check that path then export it to the directories then you could run multiple copies of obenbor. The main benefit from this would be having one game in each folder then you could make a forwarder and load individual games from the wii menu.

This test you uploaded are you saying you updated the devkit from 27 to 29 if so are there any real benefits from using the newer devkit since I see a lot of posts where people want to downgrade due to bugs and problems

 

[Wiimpathy]

Do you know WiiFlow plugin's system? You can launch individual file for emulators/apps with covers : https://sites.google.com/site/wiiflowiki4/plugins-setup
What you ask is how to handle arguments (argv) and how to test folders. I can give you some hints but I won't do all the job for you.
My openbor plugin : https://gbatemp.net/threads/wiiflow-an-open-source-gui-usb-loader.204106/page-667#post-4719266
It's a quick and nasty hack but you'll get the idea. Look for plugin in the source.

More recently SuperrSonic's Wiimc : https://github.com/SuperrSonic/WiiMC-SSLC/commit/3a93d256779c8cf1d979de274ac9750e4a094af4
https://github.com/Wiimpathy/FunnyMu-Wii/blob/master/source/funnymu.c#L103

Test folders :
https://github.com/Wiimpathy/Bermuda-Wii/blob/master/source/main.cpp#L77

Genesis plus, surely better code than mine :
https://github.com/ekeeke/Genesis-Plus-GX/blob/master/gx/main.c#L331

The test dol is compiled with r27 but I've started the changes to be r29+ compatible. As I said wii-u pro controller support is integrated in r29, you need an external lib before that. You can read the changelogs and commits to help you decide.

 

[msmalik681]

Demothens already added wii-u pro controller support I just need to add it to the source code It is still buggy and needs updating though. https://gbatemp.net/threads/request-wii-openbor-with-libwupc-compatibility.512433/#post-8177106

It seems the controller support is the main advantage of updating. https://devkitpro.org/viewtopic.php?f=13&t=8625

Thanks for the links and I don't want you to write the code for me just some pointers (no coding joke intended) are fine thanks.

 

[msmalik681]

I have managed to get the base path using this code:

char root[MAX_FILENAME_LEN];
memset(root, '\0', sizeof(root));
strncpy(root, argv[0], strrchr(argv[0], '/') - argv[0]);

sprintf(rootDir, "%s/OpenBOR/", root);
sprintf(savesDir, "%s/Saves", root);
sprintf(paksDir,"%s/Paks", root);
sprintf(logsDir, "%s/Logs", root);
sprintf(screenShotsDir, "%s/ScreenShots", root);

Does anyone know how to check what video mode the wii is running (PAL - NTSC) I need this so I can scale the screen correctly.

 

[msmalik681]

Openbor on the wii has a issue when handling double data type as explained here: http://www.chronocrash.com/forum/index.php?topic=3990.msg55313#msg55313

My question is are there any known issues when handling double values ?

 

[GreyWolf]

Use the DSI data to determine where it's crashing. You'll need the ELF file for the version you're testing and gdb from devkitPPC. "gdb info line *X" where X is the hex address from the DSI dump. (ex: "gdb info line *0x800084ac")

I don't know of any issues with newlib and double values.

 

[msmalik681]

Thanks greywolf the issue has been resolved. My next problem will be 16 bit samples.

 

[msmalik681]

Can anyone help me with 16-bit samples (sfx) here is the source behind the sound https://github.com/DCurrent/openbor/blob/master/engine/wii/sblaster.c all music and 8-bit samples work fine but 16-bit samples just sound like static noise.