Merge pull request #1500 from jedgarpark/pi400-knobs

first commit

Author: ladyada

Pi400_Knobs/pi400_knobs_osc.py

@@ -0,0 +1,48 @@
+# SPDX-FileCopyrightText: 2021 John Park for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+#!/usr/bin/env python
+
+import time
+import board
+from adafruit_simplemath import map_range
+import adafruit_pcf8591.pcf8591 as PCF
+from adafruit_pcf8591.analog_in import AnalogIn
+from pythonosc import udp_client
+
+
+sender = udp_client.SimpleUDPClient("127.0.0.1", 4560)
+sender.send_message("/trigger/prophet", [43, 110, 1, 0.7])
+
+i2c = board.I2C()
+pcf = PCF.PCF8591(i2c)
+
+pcf_in_0 = AnalogIn(pcf, PCF.A0)
+pcf_in_1 = AnalogIn(pcf, PCF.A1)
+pcf_in_2 = AnalogIn(pcf, PCF.A2)
+pcf_in_3 = AnalogIn(pcf, PCF.A3)
+
+try:
+    while True:
+        osc_0_val = int(255 - (pcf_in_0.value / 256))  # convert values to useful ranges
+        osc_1_val = int(255 - (pcf_in_1.value / 256))
+        osc_2_val = int(255 - (pcf_in_2.value / 256))
+        osc_3_val = int(255 - (pcf_in_3.value / 256))
+
+        osc_note_val = int(
+            map_range(osc_0_val, 0, 255, 43, 58)
+        )  # map values to relevant ranges
+        osc_cutoff_val = int(map_range(osc_1_val, 0, 255, 30, 110))
+        osc_sustain_val = map_range(osc_2_val, 0, 255, 0.2, 2)
+        osc_gain_val = map_range(osc_3_val, 0, 255, 0, 1.0)
+
+        # print((osc_note_val, osc_cutoff_val, osc_sustain_val, osc_gain_val))  # for plotter
+        sender.send_message(
+            "/trigger/prophet",
+            [osc_note_val, osc_cutoff_val, osc_sustain_val, osc_gain_val],
+        )
+
+        time.sleep(0.001)
+
+except KeyboardInterrupt:
+    print("done")