Reicast Stuck On Time & Date !

mrbwa1

Most of my testing is based on this video:

Your input device may not be js0. Try doing a cd /dev/input then an ls -h to get a devices listing. Look for and jsX listings.

It also could be possible that jstest is not available. If that is the case: sudo apt-get install joystick should bring in the package.

EDIT. It looks like I crossed up my commands as well. It should be jstest /dev/input/js0
Time for another cup of coffee!

Slugz

@mediamogul said in Reicast Stuck On Time & Date !:

@Slugz

https://github.com/retropie/retropie-setup/wiki/Dreamcast#for-mapping-non-standard-controller-via-folly

i ran the controller this is what i got -

[emulator]
mapping_name = MAYFLASH Arcade Fightstick F300
btn_escape = 296

[dreamcast]
btn_a = 290
btn_b = 289
btn_c =
btn_d =
btn_x = 291
btn_y = 288
btn_z =
btn_start = 297
btn_dpad1_left =
btn_dpad1_right =
btn_dpad1_up =
btn_dpad1_down =
btn_dpad2_left =
btn_dpad2_right =
btn_dpad2_up =
btn_dpad2_down =
axis_x =
axis_y =
axis_trigger_left =
axis_trigger_right =

[compat]
btn_trigger_left = 292
btn_trigger_right = 293
axis_dpad1_x =
axis_dpad1_y =
axis_dpad2_x =
axis_dpad2_y =
axis_x_inverted =
axis_y_inverted =
axis_trigger_left_inverted =
axis_trigger_right_inverted =

these are the numbers i got from a jtest -

up - 5: -32767
down - 5: 32767
left - 4: -32767
right - 4: 32767

x - 1:
o - 2:
square - 0:
triangle - 3:

etc .....

where i place these number & which

mediamogul

@Slugz

It's been a while since I've done it myself, but from memory, you would add the number codes you got from running /opt/retropie/emulators/reicast/bin/reicast-joyconfig and input them into the Reicast mapping file. According to the wiki entry, you'll need to create it yourself. I'll have to defer any more specific questions to someone else, as I have had Reicast uninstalled for some time due to poor performance on the Pi3.

Slugz

@mediamogul said in Reicast Stuck On Time & Date !:

@Slugz

It's been a while since I've done it myself, but from memory, you would add the number codes you got from running /opt/retropie/emulators/reicast/bin/reicast-joyconfig and input them into the Reicast mapping file. According to the wiki entry, you'll need to create it yourself. I'll have to defer any more specific questions to someone else, as I have had Reicast uninstalled for some time due to poor performance on the Pi3.

this is what i got in the /opt/retropie/emulators/reicast/bin/reicast-joyconfig

# -*- coding: utf-8 -*-

from __future__ import print_function

import sys
import re
import os
if sys.version_info < (3, 0):
    import ConfigParser as configparser
    INPUT_FUNC = raw_input
else:
    import configparser
    INPUT_FUNC = input

try:
    import evdev
except ImportError:
    print("Can't import evdev module. Please install it.")
    print("You can do this via:")
    print("  pip install evdev")
    sys.exit(1)

DEV_ID_PATTERN = re.compile('(\d+)')
DREAMCAST_BUTTONS = ['A', 'B', 'C', 'D', 'X', 'Y', 'Z', 'START']
DREAMCAST_DPAD = [('X', 'LEFT', 'RIGHT'), ('Y', 'UP', 'DOWN')]
DREAMCAST_TRIGGERS = ['TRIGGER_LEFT', 'TRIGGER_RIGHT']
DREAMCAST_STICK_AXES = [('X', 'left'), ('Y', 'up')]
SECTIONS = ["emulator", "dreamcast", "compat"]


def list_devices():
    devices = [(int(DEV_ID_PATTERN.findall(fn)[0]), evdev.InputDevice(fn))
               for fn in evdev.list_devices()]

    dev_id_len = len(str(max([dev_id for dev_id, dev in devices])))

    for dev_id, dev in sorted(devices, key=lambda x: x[0]):
        print("%s: %s (%s, %s)" %
              (str(dev_id).rjust(dev_id_len), dev.name, dev.fn, dev.phys))


def clear_events(dev):
    try:
        event = dev.read_one()
        while(event is not None):
            event = dev.read_one()
    except (OSError, IOError):
        # BlockingIOErrors should only occur if someone uses the evdev
        # module < v0.4.4. BlockingIOError inherits from OSError, so we
        # catch that for Python 2 compatibility. We also catch IOError,
        # just in case.
        pass


def read_button(dev):
    for event in dev.read_loop():
        if event.type == evdev.ecodes.EV_KEY and event.value == 0:
            break
    return event


def read_axis(dev, absinfos):
    axis_inverted = False
    for event in dev.read_loop():
        if event.type == evdev.ecodes.EV_ABS and \
           event.value in (absinfos[event.code].min, absinfos[event.code].max):
            if event.value == absinfos[event.code].max:
                axis_inverted = True
            break
    return (event, axis_inverted)


def read_axis_or_key(dev, absinfos):
    axis_inverted = False
    for event in dev.read_loop():
        if event.type == evdev.ecodes.EV_KEY and event.value == 0:
            break
        elif (event.type == evdev.ecodes.EV_ABS and event.value in
              (absinfos[event.code].min, absinfos[event.code].max)):
            if event.value == absinfos[event.code].max:
                axis_inverted = True
            break
    return (event, axis_inverted)


def print_mapped_button(name, event):
    try:
        code_id = evdev.ecodes.BTN[event.code]
    except (IndexError, KeyError):
        try:
            code_id = evdev.ecodes.KEY[event.code]
        except (IndexError, KeyError):
            code_id = None
    if type(code_id) is list:
        code_id = code_id[0]
    code_id = (' (%s)' % code_id) if code_id else ''
    print("%s mapped to %d%s." % (name, event.code, code_id))


def print_mapped_axis(name, event, axis_inverted=False):
    try:
        code_id = evdev.ecodes.ABS[event.code]
    except (IndexError, KeyError):
        code_id = None
    if type(code_id) is list:
        code_id = code_id[0]
    code_id = (' (%s)' % code_id) if code_id else ''
    inv = (' (inverted)' if axis_inverted else '')
    print("%s mapped to %d%s%s." % (name, event.code, code_id, inv))


def setup_device(dev_id):
    print("Using device %d..." % dev_id)
    fn = "/dev/input/event%d" % dev_id
    dev = evdev.InputDevice(fn)
    print("Name: %s" % dev.name)
    print("File: %s" % dev.fn)
    print("Phys: %s" % dev.phys)

    cap = dev.capabilities(verbose=False, absinfo=True)
    try:
        absinfos = dict(cap[evdev.ecodes.EV_ABS])
    except KeyError:
        absinfos = dict()

    mapping = configparser.RawConfigParser()
    for section in SECTIONS:
        mapping.add_section(section)
    mapping.set("emulator", "mapping_name", dev.name)

    # Emulator escape button
    if ask_yes_no("Do you want to map a button to exit the emulator"):
        clear_events(dev)
        print("Press the that button now...")
        event = read_button(dev)
        mapping.set("emulator", "btn_escape", event.code)
        print_mapped_button("emulator escape button", event)

    # Regular dreamcast buttons
    for button in DREAMCAST_BUTTONS:
        if ask_yes_no("Do you want to map the %s button?" % button):
            clear_events(dev)
            print("Press the %s button now..." % button)
            event = read_button(dev)
            mapping.set("dreamcast", "btn_%s" % button.lower(), event.code)
            print_mapped_button("%s button" % button, event)

    # DPads
    for i in range(1, 3):
        if ask_yes_no("Do you want to map DPad %d?" % i):
            for axis, button1, button2 in DREAMCAST_DPAD:
                clear_events(dev)
                print("Press the %s button of DPad %d now..." % (button1, i))
                event, axis_inverted = read_axis_or_key(dev, absinfos)
                if event.type == evdev.ecodes.EV_ABS:
                    axisname = "axis_dpad%d_%s" % (i, axis.lower())
                    mapping.set("compat", axisname, event.code)
                    mapping.set("compat", "%s_inverted" % axisname, "yes" if axis_inverted else "no")
                    print_mapped_axis("%s axis of DPad %d" % (axis, i), event, axis_inverted)
                else:
                    buttonconf = "btn_dpad%d_%%s" % i
                    mapping.set("dreamcast", buttonconf % button1.lower(), event.code)
                    print_mapped_button("%s button of DPad %d" % (button1, i), event)
                    clear_events(dev)
                    print("Press the %s button of DPad %d now..." % (button2, i))
                    event = read_button(dev)
                    mapping.set("dreamcast", buttonconf % button2.lower(), event.code)
                    print_mapped_button("%s button of DPad %d" % (button2, i), event)

    # Triggers
    for trigger in DREAMCAST_TRIGGERS:
        if ask_yes_no("Do you want to map %s?" % trigger):
            clear_events(dev)
            print("Press the %s now..." % trigger)
            event, axis_inverted = read_axis_or_key(dev, absinfos)
            axis_inverted = not axis_inverted
            if event.type == evdev.ecodes.EV_ABS:
                axisname = "axis_%s" % trigger.lower()
                mapping.set("dreamcast", axisname, event.code)
                mapping.set("compat", "%s_inverted" % axisname, "yes" if axis_inverted else "no")
                print_mapped_axis("analog %s" % trigger, event, axis_inverted)
            else:
                mapping.set("compat", "btn_%s" % trigger.lower(), event.code)
                print_mapped_button("digital %s" % trigger, event)

    # Stick
    if ask_yes_no("Do you want to map the analog stick?"):
        for axis, axis_dir in DREAMCAST_STICK_AXES:
            clear_events(dev)
            print("Please move the analog stick as far %s as possible now..." % axis_dir)
            event, axis_inverted = read_axis(dev, absinfos)
            axisname = "axis_%s" % axis.lower()
            mapping.set("dreamcast", axisname, event.code)
            mapping.set("compat", "%s_inverted" % axisname, "yes" if axis_inverted else "no")
            print_mapped_axis(axis, event, axis_inverted)

    for section in SECTIONS:
        if not mapping.options(section):
            mapping.remove_section(section)

    return mapping


def ask_yes_no(question, default=True):
    valid = {"yes": True, "y": True, "ye": True,
             "no": False, "n": False}
    prompt = "Y/n" if default else "y/N"

    while True:
        print("%s [%s] " % (question, prompt), end='')
        choice = INPUT_FUNC().lower()
        if choice == '':
            return default
        if choice in valid:
            return valid[choice]
        else:
            print("Please respond with 'yes' or 'no'")


if __name__ == "__main__":
    import argparse
    parser = argparse.ArgumentParser(
      description='Reicast evdev controller mapping editor')
    parser.add_argument('-d', '--device-id', action='store', type=int,
                        default=-1, help='device-id to map.')
    parser.add_argument('-f', '--file', action='store', default=None,
                        help='write mapping to this file')
    args = parser.parse_args()

    if args.device_id < 0:
        list_devices()
        dev_id = int(input("Please enter the device id: "))
    else:
        dev_id = args.device_id

    mapping = setup_device(dev_id)

    if args.file:
        with open(args.file, "w") as f:
            mapping.write(f)
        print("\nMapping file saved to: %s\n" % os.path.abspath(args.file))
    else:
        print("\nHere's your mapping file:\n")
        mapping.write(sys.stdout)

    sys.exit(0)```

BuZz

@Slugz if you are going to post configs and code to the forum - please format it properly http://commonmark.org/help/ (Please go back and edit your post and put in code blocks)

Slugz

@BuZz said in Reicast Stuck On Time & Date !:

@Slugz if you are going to post configs and code to the forum - please format it properly http://commonmark.org/help/ (Please go back and edit your post and put in code blocks)

don't know how.

backstander

@Slugz
I believe you put those controller mapping info into a files named something like this /opt/retropie/configs/dreamcast/mappings/MAYFLASHArcadeFightstickF300.cfg

Than edit /opt/retropie/configs/dreamcast/emu.cfg to tell the emulator to use your custom controller mapping:

evdev_mapping_1 = /opt/retropie/configs/dreamcast/mappings/MAYFLASHArcadeFightstickF300.cfg
evdev_mapping_2 = /opt/retropie/configs/dreamcast/mappings/MAYFLASHArcadeFightstickF300.cfg

BuZz

@Slugz read the link - surround the code with three backticks ```

Slugz

@backstander said in Reicast Stuck On Time & Date !:

@Slugz
I believe you put those controller mapping info into a files named something like this /opt/retropie/configs/dreamcast/mappings/MAYFLASHArcadeFightstickF300.cfg

Than edit /opt/retropie/configs/dreamcast/emu.cfg to tell the emulator to use your custom controller mapping:
evdev_mapping_1 = /opt/retropie/configs/dreamcast/mappings/MAYFLASHArcadeFightstickF300.cfg
evdev_mapping_2 = /opt/retropie/configs/dreamcast/mappings/MAYFLASHArcadeFightstickF300.cfg

don't get it.

can you tell me which files i move & change & where.

Slugz

this is what is in my /opt/retropie/configs/dreamcast/emu.cfg

there is no controller on it.

disable = 0

[config]
Debug.SerialConsoleEnabled = 0
Dreamcast.Broadcast = 4
Dreamcast.Cable = 3
Dreamcast.RTC = 2109681505
Dreamcast.Region = 3
Dynarec.Enabled = 1
Dynarec.idleskip = 1
Dynarec.unstable-opt = 0
aica.LimitFPS = 1
aica.NoBatch = 0
aica.NoSound = 0
bios.UseReios = 0
pvr.MaxThreads = 3
pvr.Subdivide = 0
pvr.SynchronousRendering = 0
pvr.rend = 0
rend.UseMipmaps = 1
rend.WideScreen = 0
ta.skip = 0

[dispmanx]
height = 480
maintain_aspect = yes
width = 640

[omx]
audio_hdmi = yes
audio_latency = 100

[reios]
ElfFile = 

[validate]
OpenGlChecks = 0```

mrbwa1

The Input section should be between the [dispmanx] and [omx] sections. Hre is that part of my emu.config:

[dispmanx]
height = 480
maintain_aspect = yes
width = 640

[input]
evdev_device_id_1 = 0
evdev_device_id_2 = 1
evdev_device_id_3 = -1
evdev_device_id_4 = -1
evdev_mapping_1 = /opt/retropie/configs/dreamcast/mappings/controller_TwinUSBJoystick.cfg
evdev_mapping_2 = /opt/retropie/configs/dreamcast/mappings/controller_TwinUSBJoystick.cfg
joystick_device_id = -1

[omx]
audio_hdmi = yes
audio_latency = 100

I have never done a manual edit of this config file, so I'm not sure what you need in the evdev_mapping_X lines or the joystick_device_id_X line. You can try pasting in what I have and changing TwinUSBJoystick.cfg lines to

evdev_mapping_1 = /opt/retropie/configs/dreamcast/mappings/MAYFLASHArcadeFightstickF300.cfg
evdev_mapping_2 = /opt/retropie/configs/dreamcast/mappings/MAYFLASHArcadeFightstickF300.cfg

Note, check /opt/retropie/configs/dreamcast/mappings for the exact filename. It might be something like controller_MAYFLASHArcadeFightstickF300.cfg. All of y listed configs start with "controller_" except keyboard.cfg (I am running Retropie 4.1)

Slugz

@mrbwa1 said in Reicast Stuck On Time & Date !:

The Input section should be between the [dispmanx] and [omx] sections. Hre is that part of my emu.config:

[dispmanx]
height = 480
maintain_aspect = yes
width = 640

[input]
evdev_device_id_1 = 0
evdev_device_id_2 = 1
evdev_device_id_3 = -1
evdev_device_id_4 = -1
evdev_mapping_1 = /opt/retropie/configs/dreamcast/mappings/controller_TwinUSBJoystick.cfg
evdev_mapping_2 = /opt/retropie/configs/dreamcast/mappings/controller_TwinUSBJoystick.cfg
joystick_device_id = -1

[omx]
audio_hdmi = yes
audio_latency = 100

I have never done a manual edit of this config file, so I'm not sure what you need in the evdev_mapping_X lines or the joystick_device_id_X line. You can try pasting in what I have and changing TwinUSBJoystick.cfg lines to

evdev_mapping_1 = /opt/retropie/configs/dreamcast/mappings/MAYFLASHArcadeFightstickF300.cfg
evdev_mapping_2 = /opt/retropie/configs/dreamcast/mappings/MAYFLASHArcadeFightstickF300.cfg

Note, check /opt/retropie/configs/dreamcast/mappings for the exact filename. It might be something like controller_MAYFLASHArcadeFightstickF300.cfg. All of y listed configs start with "controller_" except keyboard.cfg (I am running Retropie 4.1)

here is my devices -

0: Mini Keyboard (/dev/input/event0, usb-3f980000.usb-1.2/input0)
1: Mini Keyboard (/dev/input/event1, usb-3f980000.usb-1.2/input1)
2: MAYFLASH Arcade Fightstick F300 (/dev/input/event2, usb-3f980000.usb-1.5/input0)
3: 8Bitdo SNES30 GamePad (/dev/input/event3, b8:27:eb:e5:9c:6a)

i like to setup the MAYFLASH & THE 8Bitdo -

controller_8BitdoSNES30GamePad.cfg
& the -
controller_MAYFLASHArcadeFightstickF300.cfg

Slugz

& do i need to install any driver updates.

Slugz

here is my devices -

0: Mini Keyboard (/dev/input/event0, usb-3f980000.usb-1.2/input0)
1: Mini Keyboard (/dev/input/event1, usb-3f980000.usb-1.2/input1)
2: MAYFLASH Arcade Fightstick F300 (/dev/input/event2, usb-3f980000.usb-1.5/input0)
3: 8Bitdo SNES30 GamePad (/dev/input/event3, b8:27:eb:e5:9c:6a)

i like to setup the MAYFLASH & THE 8Bitdo -

controller_8BitdoSNES30GamePad.cfg
& the -
controller_MAYFLASHArcadeFightstickF300.cfg

backstander

@Slugz

Oh yeah, in the /opt/retropie/configs/dreamcast/emu.cfg file you need to change evdev_device_id_1 & 2 to equal the number of the joystick you want to use.

So if you want your MAYFLASH Arcade Fightstick F300 to be player 1 and your 8Bitdo SNES30 GamePad to be player 2. From what you posted above the Mini Keyboard is using 0 and 1 and the MAYFLASH is 2 and the 8Bitdo is 3.

You'd do something like this:

[input]
evdev_device_id_1 = 2
evdev_device_id_2 = 3
evdev_device_id_3 = -1
evdev_device_id_4 = -1
evdev_mapping_1 = /opt/retropie/configs/dreamcast/mappings/controller_MAYFLASHArcadeFightstickF300.cfg
evdev_mapping_2 = /opt/retropie/configs/dreamcast/mappings/controller_8BitdoSNES30GamePad.cfg
joystick_device_id = -1

The -1 means no joystick which we used for player 3 and 4 and also have evdev_mapping_1 & 2 to point to the matching joystick mapping config files.

And if you want 2 players at the same time, then you need to add this to the bottom of that same emu.cfg file:

[players]
nb = 2

Slugz

@backstander said in Reicast Stuck On Time & Date !:

@Slugz

Oh yeah, in the /opt/retropie/configs/dreamcast/emu.cfg file you need to change evdev_device_id_1 & 2 to equal the number of the joystick you want to use.

So if you want your MAYFLASH Arcade Fightstick F300 to be player 1 and your 8Bitdo SNES30 GamePad to be player 2. From what you posted above the Mini Keyboard is using 0 and 1 and the MAYFLASH is 2 and the 8Bitdo is 3.

You'd do something like this:
[input]
evdev_device_id_1 = 2
evdev_device_id_2 = 3
evdev_device_id_3 = -1
evdev_device_id_4 = -1
evdev_mapping_1 = /opt/retropie/configs/dreamcast/mappings/controller_MAYFLASHArcadeFightstickF300.cfg
evdev_mapping_2 = /opt/retropie/configs/dreamcast/mappings/controller_8BitdoSNES30GamePad.cfg
joystick_device_id = -1
The -1 means no joystick which we used for player 3 and 4 and also have evdev_mapping_1 & 2 to point to the matching joystick mapping config files.

And if you want 2 players at the same time, then you need to add this to the bottom of that same emu.cfg file:
[players]
nb = 2

still not working !

Slugz

still not working !

backstander

@Slugz

still not working !

I'm stumped.

Please post the contents of your /opt/retropie/configs/dreamcast/mappings/controller_MAYFLASHArcadeFightstickF300.cfg and /opt/retropie/configs/dreamcast/mappings/controller_8BitdoSNES30GamePad.cfg files (or whatever controller mapping files that are referenced by your /opt/retropie/configs/dreamcast/emu.cfg).

Also post your current contents of your /opt/retropie/configs/dreamcast/emu.cfg file as well.

Sometimes something as little as a typo can cause the whole emulator not to work.

Slugz

@backstander said in Reicast Stuck On Time & Date !:

@Slugz

still not working !

I'm stumped.

Please post the contents of your /opt/retropie/configs/dreamcast/mappings/controller_MAYFLASHArcadeFightstickF300.cfg and /opt/retropie/configs/dreamcast/mappings/controller_8BitdoSNES30GamePad.cfg files (or whatever controller mapping files that are referenced by your /opt/retropie/configs/dreamcast/emu.cfg).

Also post your current contents of your /opt/retropie/configs/dreamcast/emu.cfg file as well.

Sometimes something as little as a typo can cause the whole emulator not to work.

Mayflash

mapping_name = MAYFLASH Arcade Fightstick F300
btn_escape = 296

[dreamcast]
btn_a = 290
btn_b = 289
btn_c =
btn_d =
btn_x = 291
btn_y = 288
btn_z =
btn_start = 297
btn_dpad1_left =
btn_dpad1_right =
btn_dpad1_up =
btn_dpad1_down =
btn_dpad2_left =
btn_dpad2_right =
btn_dpad2_up =
btn_dpad2_down =
axis_x =
axis_y =
axis_trigger_left =
axis_trigger_right =

[compat]
btn_trigger_left = 292
btn_trigger_right = 293
axis_dpad1_x =
axis_dpad1_y =
axis_dpad2_x =
axis_dpad2_y =
axis_x_inverted =
axis_y_inverted =
axis_trigger_left_inverted =
axis_trigger_right_inverted =

8BitdoSNES30

mapping_name = 8Bitdo SNES30 GamePad
btn_escape = 298

[dreamcast]
btn_a = 289
btn_b = 288
btn_c =
btn_d =
btn_x = 292
btn_y = 291
btn_z =
btn_start = 299
btn_dpad1_left =
btn_dpad1_right =
btn_dpad1_up =
btn_dpad1_down =
btn_dpad2_left =
btn_dpad2_right =
btn_dpad2_up =
btn_dpad2_down =
axis_x = 0
axis_y = 1
axis_trigger_left =
axis_trigger_right =

[compat]
btn_trigger_left = 294
btn_trigger_right = 295
axis_dpad1_x =
axis_dpad1_y =
axis_dpad2_x =
axis_dpad2_y =
axis_x_inverted = no
axis_y_inverted = no
axis_trigger_left_inverted =
axis_trigger_right_inverted =

emu.cfg

disable = 0

[config]
Debug.SerialConsoleEnabled = 0
Dreamcast.Broadcast = 4
Dreamcast.Cable = 3
Dreamcast.RTC = 2110739856
Dreamcast.Region = 3
Dynarec.Enabled = 1
Dynarec.idleskip = 1
Dynarec.unstable-opt = 0
aica.LimitFPS = 1
aica.NoBatch = 0
aica.NoSound = 0
bios.UseReios = 0
pvr.MaxThreads = 3
pvr.Subdivide = 0
pvr.SynchronousRendering = 0
pvr.rend = 0
rend.UseMipmaps = 1
rend.WideScreen = 0
ta.skip = 0

[dispmanx]
height = 480
maintain_aspect = yes
width = 640

[input]
evdev_device_id_1 = 0
evdev_device_id_2 = 1
evdev_device_id_3 = -1
evdev_device_id_4 = -1
evdev_mapping_1 = /opt/retropie/configs/dreamcast/mappings/controller_8Bitdo SNES30 GamePad.cfg
evdev_mapping_2 = /opt/retropie/configs/dreamcast/mappings/controller_8Bitdo SNES30 GamePad.cfg
joystick_device_id = -1

[omx]
audio_hdmi = yes
audio_latency = 100

[reios]
ElfFile = 

[validate]
OpenGlChecks = 0

and how do i see my device id inputs again because i think i did a update.

backstander

and how do i see my device id inputs again because i think i did a update.

evtest then just hit Ctrl+C to exit after you get your event number.

I did notice something in your emu.cfg. There's spaces in your controller mapping cfg file name. Try putting quotes around them like this:

evdev_mapping_1 = "/opt/retropie/configs/dreamcast/mappings/controller_8Bitdo SNES30 GamePad.cfg"
evdev_mapping_2 = "/opt/retropie/configs/dreamcast/mappings/controller_8Bitdo SNES30 GamePad.cfg"

Or you can just rename them to controller_8BitdoSNES30GamePad.cfg to remove the spaces.

Also you'll want to add this somewhere to your emu.cfg file if you want 2 players:

[players]
nb = 2