init

.gitignore

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+venv/
+__pycache__

README.md

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+# Seq
+
+![cover made with libre office calc](cover.png)
+
+An open ended CSV sequencer. It only takes care of looping through a .csv file, row by row, and send the contents of each one to a client with OSC.
+
+In this way all the command logic is up to the user, and the sequencer can be prototyped on the go.
+
+There is no restriction in the number or lenght of columns.
+
+Tested with a VVVV client with different modes:
+
+-   frequency
+    `440`
+    enter the frequency for a basic oscillator
+
+-   frequency + waveform
+    `s400`, `t600`, `n700`
+    first character is the waveform (sine, tri, noise, pulse), the rest is the frequency
+
+-   midi
+    `m064`, `m148`
+    m stands for midi, first digit is the midi channel, the rest is the note
+    ![](2022-12-26-16-26-40.png)
+
+## Install
+
+To install create a virtual environemnt and then install the requirements from the `requirements.txt` file.
+
+`python3 -m venv venv`
+
+`source venv/bin/activate`
+
+`pip install -r requirements.txt`
+
+## Run
+
+To run the sequencer run
+
+`python seq.py`
+
+It will read the contents of the `seq.csv` file and forward them on a OSC client running on the local ip `127.0.0.1`, on the port `1337`
+
+Note that you can edit live the `seq.csv` file with a software like LibreOffice Calc, or directly as a text file.
+
+ATM the main loop of the sequencer reload the file at every step. Not really efficient! But for small files should not be a problem.
+
+## Next steps
+
+-   Use env files to set ports and osc address
+-   bpm as command line arguments

requirements.txt

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+python-osc==1.8.0

seq.csv

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+Track 1,Track 2,Track 3,Track 4
+m064\0.1,,,
+,,,
+m098,,,
+,,,
+,,,
+M064\2,,,

seq.py

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+import csv
+import time
+from pythonosc.udp_client import SimpleUDPClient
+
+class Loop:
+
+    index = 0
+
+    def __init__(self, seq: list, bpm: int, ip="127.0.0.1", port=1337):
+        self.seq = seq
+        self.bpm = bpm
+        self.client = SimpleUDPClient(ip, port)
+
+    def read(self):
+        with open('seq.csv', newline='') as f:
+            self.seq = [step for step in csv.DictReader(f)]       
+
+
+    def process(self, step):
+        commands = [command for command in step.values()]
+        self.client.send_message('/seq', commands)
+        for key, value in step.items():
+            print(value, end=' ')
+        print('')
+
+    def main(self):
+        while True:
+            self.read()
+            try:
+                self.process(self.seq[self.index])
+            except IndexError:
+                self.index = 0
+                self.process(self.seq[self.index])
+            self.index = self.index + 1 if self.index < len(self.seq) - 1 else 0
+            time.sleep(60/self.bpm/4)
+            
+
+if __name__ == "__main__":
+    with open('seq.csv', newline='') as f:
+        sequence = [step for step in csv.DictReader(f)]
+    loop = Loop(sequence, 120)
+    loop.main()