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Merge pull request #2134 from adafruit/esp32_pure_data
adding circuitpython and pure data code
2 parents 24e62a0 + 6104f91 commit 94230bd

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‎Wireless_ESP32-S2_Controller_For_Pure_Data/code.py

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# SPDX-FileCopyrightText: 2022 Liz Clark for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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import ipaddress
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import wifi
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import socketpool
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import board
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import simpleio
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import adafruit_tsc2007
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import adafruit_adxl34x
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# Get wifi details and host IP from a secrets.py file
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try:
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from secrets import secrets
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except ImportError:
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print("WiFi secrets are kept in secrets.py, please add them there!")
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raise
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# I2C setup for STEMMA port
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i2c = board.STEMMA_I2C()
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# touchscreen setup for TSC2007
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irq_dio = None
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tsc = adafruit_tsc2007.TSC2007(i2c, irq=irq_dio)
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# accelerometer setup
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accelerometer = adafruit_adxl34x.ADXL343(i2c)
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accelerometer.enable_tap_detection()
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# MIDI notes - 2 octaves of Cmaj7 triad
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notes = [48, 52, 55, 59, 60, 64, 67, 71]
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# reads touch input
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point = tsc.touch
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# accelerometer x coordinate
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acc_x = 0
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# accelerometer y coordinate
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acc_y = 0
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# last accelerometer x coordinate
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last_accX = 0
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# last accelerometer y coordinate
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last_accY = 0
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# mapped value for touchscreen x coordinate
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x_map = 0
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# mapped value for touchscreen y coordinate
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y_map = 0
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# last mapped value for touchscreen x coordinate
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last_x = 0
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# last mapped value for touchscreen y coordinate
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last_y = 0
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# state for whether synth is running
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run = 0
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# tap detection state
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last_tap = False
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# new value detection state
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new_val = False
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# URLs to fetch from
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HOST = secrets["host"]
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PORT = 12345
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TIMEOUT = 5
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INTERVAL = 5
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MAXBUF = 256
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# connect to WIFI
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print("Connecting to %s"%secrets["ssid"])
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wifi.radio.connect(secrets["ssid"], secrets["password"])
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print("Connected to %s!"%secrets["ssid"])
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pool = socketpool.SocketPool(wifi.radio)
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ipv4 = ipaddress.ip_address(pool.getaddrinfo(HOST, PORT)[0][4][0])
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buf = bytearray(MAXBUF)
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print("Create TCP Client Socket")
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s = pool.socket(pool.AF_INET, pool.SOCK_STREAM)
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print("Connecting")
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s.connect((HOST, PORT))
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while True:
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# tap detection
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# if tap is detected and the synth is not running...
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if accelerometer.events["tap"] and not last_tap and not run:
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# run is updated to 1
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run = 1
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# last_tap is reset
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last_tap = True
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print("running")
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# message is sent to Pd to start the synth
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# all Pd messages need to end with a ";"
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size = s.send(str.encode(' '.join(["run", str(run), ";"])))
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# if tap is detected and the synth is running...
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if accelerometer.events["tap"] and not last_tap and run:
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# run is updated to 0
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run = 0
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# last_tap is reset
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last_tap = True
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print("not running")
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# message is sent to Pd to stop the synth
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# all Pd messages need to end with a ";"
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size = s.send(str.encode(' '.join(["run", str(run), ";"])))
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# tap detection debounce
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if not accelerometer.events["tap"] and last_tap:
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last_tap = False
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# if the touchscreen is touched...
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if tsc.touched:
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# point holds touch data
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point = tsc.touch
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# x coordinate is remapped to 0 - 8
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x_map = simpleio.map_range(point["x"], 0, 4095, 0, 8)
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# y coordinate is remapped to 0 - 8
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y_map = simpleio.map_range(point["y"], 0, 4095, 0, 8)
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# accelerometer x value is remapped for synth filter
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acc_x = simpleio.map_range(accelerometer.acceleration[0], -10, 10, 450, 1200)
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# accelerometer y value is remapped for synth filter
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acc_y = simpleio.map_range(accelerometer.acceleration[1], -10, 10, 250, 750)
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# if any of the values are different from the last value...
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if x_map != last_x:
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# last value is updated
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last_x = x_map
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# new value is detected
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new_val = True
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if y_map != last_y:
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last_y = y_map
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new_val = True
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if int(acc_x) != last_accX:
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last_accX = int(acc_x)
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new_val = True
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if int(acc_y) != last_accY:
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last_accY = int(acc_y)
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new_val = True
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# if a new value is detected...
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if new_val:
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# note index is updated to y coordinate on touch screen
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note = notes[int(y_map)]
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# message with updated values is sent via socket to Pd
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# all Pd messages need to end with a ";"
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size = s.send(str.encode(' '.join(["x", str(x_map), ";",
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"y", str(y_map), ";",
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"aX", str(acc_x), ";",
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"aY", str(acc_y), ";",
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"n", str(note), ";"])))
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# new_val is reset
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new_val = False

‎Wireless_ESP32-S2_Controller_For_Pure_Data/pureDataWithEsp32.pd

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