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39 lines
1.2 KiB
Python
39 lines
1.2 KiB
Python
"""
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This is a simple program that runs in a loop, looking for character data over the
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UART0 line which happens to be hooked up to the MicroUSB to UART circuit on these
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dev kits.
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"""
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import os
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import random
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import serial
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import time
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ESP32_PORT= '/dev/cu.SLAB_USBtoUART' if os.uname().sysname == "Darwin" else "/dev/ttyUSB0"
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SENTENCES = [
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"The little green frog hopped to the pond.\n",
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"The cheese was late to the party.\n",
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"Don't let your dreams just be dreams.\n"
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]
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def main():
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print(f"Connecting to {ESP32_PORT}....")
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try:
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with serial.Serial(ESP32_PORT, 115200, timeout=1) as serial_conn:
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while True:
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if serial_conn.is_open:
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serial_conn.write(random.choice(SENTENCES).encode('ascii'))
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time.sleep(0.5)
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if serial_conn.in_waiting:
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print(f"Found {serial_conn.in_waiting} bytes waiting in input buffer!")
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print(serial_conn.readlines())
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else:
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print("No data received.")
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except KeyboardInterrupt:
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print("Exiting program")
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exit(0)
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if __name__ == "__main__":
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main()
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