petrockblog / snesdev-rpi Goto Github PK

Check out my branch.
https://github.com/axle-h/SNESDev-RPi

I haven't made a pull request because I've changed so much.
Instead, here's where I think you can improve this.

Performance:

• Assume that the latch and clock signals are tied so only need to run the poll sequences once per frame. Data signals can be read for all controllers fast enough between clock pulses.
• Retain last frame state so that we don't need to write button state to uinput every frame. We can instead only write when state changes.
• Don't need to run all 16 SNES clock pulses. 12 works fine.
• uinput sync is only required once per frame, not per button and no need to write the button press time.
• Button polling doesn't need to be done every frame.

Accuracy:

• The latch pulse should be 12ns. Each clock pulse should be 6ns.
• The clock signal should be held high and pulsed low.

Some general daemon stuff:

• Run as daemon using unistd. Don't rely on daemon tools.
• Log to daemon syslog.
• Provide command line options e.g. verbose, pid-file, debug.
• Don't tie this to your snes gpio adapter, e.g. i'm using your circuit but not connected to same gpios.
• Use an auto build system e.g. CMake instead of building dependencies as part of project.

Improvements

• Button config seems over complicated. Simplify it like what I've done and providing configurable key values is trivial.

root@raspberrypi:~/SNESDev-RPi# make
gcc -c -Wall -O3 -Iinclude -lbcm2835 -lrt src/main.c -o obj/main.o
src/main.c: In function ‘main’:
src/main.c:216:15: error: ‘RPI_V2_GPIO_P1_11’ undeclared (first use in this function)
src/main.c:216:15: note: each undeclared identifier is reported only once for each function it appears in
src/main.c:271:17: error: ‘RPI_V2_GPIO_P1_19’ undeclared (first use in this function)
src/main.c:272:17: error: ‘RPI_V2_GPIO_P1_23’ undeclared (first use in this function)
src/main.c:273:17: error: ‘RPI_V2_GPIO_P1_07’ undeclared (first use in this function)
src/main.c:274:17: error: ‘RPI_V2_GPIO_P1_05’ undeclared (first use in this function)
make: *** [obj/main.o] Error 1

Hi Florian, when i connect the Snes controller to Pi i get an unlimited serie de characters in the command line, It stops if i disconnect the controller. I installed your Snesdv trough the lastest RetroPie-Setup script, and all connections to GPIO ports seem to be ok.

Any ideas? How can i reconfigure or reinstall Snesdv cfg?

Suggestion from Fritiof: Since both controllers are using the same clock and strobe signal, the button states coud be read in parallel.

Ive been futzing with this for a few days on and off, and it seems like the install scripts are not quite getting SNESDev installed all the way as a service. Upon attempting to run the scripts manually my RPi will reboot at the install service portion. I have to Uninstall the service first, then Install it. Not sure if its part of a bad image that may be causing the issue but im burning retropie-4.1-rpi2_rpi3.img from the website last downloaded on Dec 5, 2016. Something about this particular combination makes for an unhappy pi.

The SNES controllers are the wrong way around.

I've double checked my wiring and it's definitely correct.

I'm only using 1 controller and when i run jstest /dev/input/js0 i get nothing, then when i run jstest /dev/input/js1 it works.

How can i reverse this? I'm only using 1 controller so it's not like i can just use them in this way.

Revision : 000e (Model B, Revision 2.0, 512MB)

For users not using the SNES Dev Shield and just going raw onto the pins having a dedicated GPIO that can be used similar to the button on the Sheild.

The documentation for going without the shield seems to have a few mixed versions eventually found the correct one on reddit - in your documentation in the GIT hub having it spelled out explicitly would be a huge help. Thanks

The Command will not work because there is not /bin folder inside the Folder SNESDev-RPi

Something has gone wrong durign make?

I am trying to setup another SD card and trying to install SNESDev. I started out with the RetroPie image (1.9.1).

If I try the manual install I get this:

CC src/uinput_gamepad.c
/usr/lib/gcc/arm-linux-gnueabihf/4.6/cc1: error while loading shared libraries: libmpfr.so.4: cannot open shared object file: Input/output error
make: *** [build/uinput_gamepad.o] Error 1


If I try from the retropie setup script I get this:

= = = = = = = = = = = = = = = = = = = = =
Installing SNESDev as GPIO interface for SNES controllers
= = = = = = = = = = = = = = = = = = = = =

CC src/uinput_gamepad.c
/usr/lib/gcc/arm-linux-gnueabihf/4.6/cc1: error while loading shared libraries: libmpfr.so.4: cannot open shared object file: Input/output error
make: *** [build/uinput_gamepad.o] Error 1
/home/pi/RetroPie-Setup
chgrp: changing group of /home/pi/RetroPie/emulators/mame4all-pi/src/sound/ym2151.h': Input/output error chgrp: changing group of/home/pi/RetroPie/emulators/mame4all-pi/src/sound/c140.h': Input/output error
chgrp: changing group of /home/pi/RetroPie/emulators/fbzx-2.10.0/Z80free.o': Input/output error chgrp: changing group of/home/pi/RetroPie/emulators/gngeo-0.7/installdir/share/gngeo/romrc.d/lresort.rc': Input/output error
chgrp: changing group of /home/pi/RetroPie/emulators/gngeo-0.7/installdir/share/gngeo/romrc.d/samsho5sp.rc': Input/output error chown: changing ownership of/home/pi/RetroPie/emulators/mame4all-pi/src/sound/ym2151.h': Input/output error
chown: changing ownership of /home/pi/RetroPie/emulators/mame4all-pi/src/sound/c140.h': Input/output error chown: changing ownership of/home/pi/RetroPie/emulators/fbzx-2.10.0/Z80free.o': Input/output error
chown: changing ownership of /home/pi/RetroPie/emulators/gngeo-0.7/installdir/share/gngeo/romrc.d/lresort.rc': Input/output error chown: changing ownership of/home/pi/RetroPie/emulators/gngeo-0.7/installdir/share/gngeo/romrc.d/samsho5sp.rc': Input/output error


What am I doing wrong?

Curently libconfuse is built/installed to /usr/local/lib - perhaps it could just link with it directly after building without installing - keeps everything in one place then. Also on raspbian, it should check if there is a system libconfuse installed - that way we can just add a dependency on RetroPie-Setup for libconfuse which saves building it at all.

Hey guys,

I'm running the v3.3 BETA Retropie SD Card Image on a RPi2. Manually downloading, compiling and manually starting SNESDev works (also compiling and installing via the retropie setup works fine)

However, there is no start script for the Systemd, so SNESDev isn't loaded automatically everytime retropie starts.

Please fix :)

Thanks!

Instead of virtual keyboard, implement gamepad driver(s). This would require less configuration.

First press: rewind
Three taps: ESC
Five taps: Shutdown