Python 3 support (requires 3.7), and various modifications, included some from PR #47

Author: josephernest

README.md

@@ -16,32 +16,36 @@ Website: [www.samplerbox.org](https://www.samplerbox.org)
 
 SamplerBox works with the RaspberryPi's built-in soundcard, but it is recommended to use a USB DAC (PCM2704 USB DAC for less than 10€ on eBay is fine) for better sound quality.
 
-1. Install the required dependencies (Python-related packages and audio libraries):
+1. Install the required dependencies (Python-related packages and audio libraries - the current version requires at least Python 3.7):
 
   ~~~
-  sudo apt-get update ; sudo apt-get -y install git python-dev python-pip python-numpy cython python-smbus libportaudio2 libffi-dev
-  sudo pip install rtmidi-python cffi sounddevice
+  sudo apt-get update
+  sudo apt-get -y install git python3-pip python3-smbus python3-numpy libportaudio2 raspberrypi-kernel
+  sudo pip3 install cython rtmidi-python cffi sounddevice pyserial
   ~~~
 
 2. Download SamplerBox and build it with:
 
   ~~~
   git clone https://github.com/josephernest/SamplerBox.git
-  cd SamplerBox ; sudo python setup.py build_ext --inplace
+  cd SamplerBox
+  sudo python3 setup.py build_ext --inplace
   ~~~
 
-3. Run the soft with `python samplerbox.py`.
+3. Run the soft with `sudo python3 samplerbox.py`.
 
 4. Play some notes on the connected MIDI keyboard, you'll hear some sound!
 
-*(Optional)*  Modify `samplerbox.py`'s first lines if you want to change root directory for sample-sets, default soundcard, etc.
+*(Optional)*  Modify `config.py` if you want to change root directory for sample-sets, default soundcard, etc.
 
 
 [How to use it](#howto)
 ----
 
 See the [FAQ](https://www.samplerbox.org/faq) on https://www.samplerbox.org.
 
+Note: the current version also works on Windows if all the required modules are installed.
+
 
 [ISO image](#isoimage)
 ----

config.py

@@ -5,8 +5,8 @@
 
 AUDIO_DEVICE_ID = 2                     # change this number to use another soundcard
 SAMPLES_DIR = "."                       # The root directory containing the sample-sets. Example: "/media/" to look for samples on a USB stick / SD card
-USE_SERIALPORT_MIDI = False             # Set to True to enable MIDI IN via SerialPort (e.g. RaspberryPi's GPIO UART pins)
-USE_I2C_7SEGMENTDISPLAY = False         # Set to True to use a 7-segment display via I2C
-USE_BUTTONS = False                     # Set to True to use momentary buttons (connected to RaspberryPi's GPIO pins) to change preset
 MAX_POLYPHONY = 80                      # This can be set higher, but 80 is a safe value
+USE_BUTTONS = False                     # Set to True to use momentary buttons (connected to RaspberryPi's GPIO pins) to change preset
+USE_I2C_7SEGMENTDISPLAY = False         # Set to True to use a 7-segment display via I2C
+USE_SERIALPORT_MIDI = False             # Set to True to enable MIDI IN via SerialPort (e.g. RaspberryPi's GPIO UART pins)
 USE_SYSTEMLED = False                   # Flashing LED after successful boot, only works on RPi/Linux

isoimage/maker.sh

@@ -19,7 +19,7 @@ mount -v -t ext4 -o sync /dev/mapper/loop0p2 sdcard
 mount -v -t vfat -o sync /dev/mapper/loop0p1 sdcard/boot
 echo root:root | chroot sdcard chpasswd
 chroot sdcard apt update
-chroot sdcard apt install -y build-essential python-dev python-pip cython python-smbus python-numpy python-rpi.gpio python-serial portaudio19-dev alsa-utils git libportaudio2 libffi-dev raspberrypi-kernel ntpdate
+chroot sdcard apt install -y build-essential python-dev python-pip cython python-smbus python-numpy python-rpi.gpio python-serial alsa-utils git libportaudio2 libffi-dev raspberrypi-kernel ntpdate
 chroot sdcard pip install rtmidi-python pyaudio cffi sounddevice
 chroot sdcard sh -c "cd /root ; git clone https://github.com/josephernest/SamplerBox.git ; cd SamplerBox ; python setup.py build_ext --inplace"
 cp -R root/* sdcard
@@ -29,10 +29,6 @@ chroot sdcard systemctl disable regenerate_ssh_host_keys sshswitch
 chroot sdcard ssh-keygen -A -v
 chroot sdcard systemctl enable ssh
 sed -i 's/ENV{pvolume}:="-20dB"/ENV{pvolume}:="-10dB"/' sdcard/usr/share/alsa/init/default
-sed -i 's/USE_SERIALPORT_MIDI = False/USE_SERIALPORT_MIDI = True/' sdcard/root/SamplerBox/samplerbox.py
-sed -i 's/USE_I2C_7SEGMENTDISPLAY = False/USE_I2C_7SEGMENTDISPLAY = True/' sdcard/root/SamplerBox/samplerbox.py
-sed -i 's/USE_BUTTONS = False/USE_BUTTONS = True/' sdcard/root/SamplerBox/samplerbox.py
-sed -i 's,SAMPLES_DIR = ".",SAMPLES_DIR = "/media/",' sdcard/root/SamplerBox/samplerbox.py
 echo "PermitRootLogin yes" >> sdcard/etc/ssh/sshd_config
 echo "alias rw=\"mount -o remount,rw /\"" >> sdcard/root/.bashrc
 sync

isoimage/root/boot/cmdline.txt

@@ -1 +1 @@
-root=/dev/mmcblk0p2 ro rootwait console=tty1 selinux=0 plymouth.enable=0 elevator=deadline bcm2708.uart_clock=3000000
+root=/dev/mmcblk0p2 ro rootwait console=tty1 selinux=0 plymouth.enable=0 elevator=deadline

isoimage/root/boot/config.txt

@@ -1,7 +1,5 @@
 dtoverlay=disable-bt
 device_tree_param=i2c_arm=on
-init_uart_clock=2441406
-init_uart_baud=38400
 boot_delay=0
 disable_splash=1
 disable_audio_dither=1

isoimage/root/etc/systemd/system/samplerbox.service

@@ -1,11 +1,8 @@
 [Unit]
 Description=Starts SamplerBox
-DefaultDependencies=false
-
 [Service]
 Type=simple
-ExecStart=/root/SamplerBox/samplerbox.sh
+ExecStart=/usr/bin/python /root/SamplerBox/samplerbox.py
 WorkingDirectory=/root/SamplerBox/
-
 [Install]
-WantedBy=local-fs.target
+RequiredBy=basic.target