Created
November 17, 2025 17:50
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| #!/usr/bin/env python3 | |
| import serial | |
| import time | |
| port = serial.Serial(port="/dev/serial/by-id/usb-FTDI_DHT22_A9Y513JN-if00-port0", baudrate=125000, timeout=0.1) | |
| while True: | |
| while port.read(1024): | |
| pass | |
| port.break_condition = True | |
| time.sleep(0.030) | |
| port.break_condition = False | |
| data = port.read(42) | |
| if data and len(data) == 42 and data[1] == 0: | |
| bits = 0 | |
| for byte in data[2:42]: | |
| bits <<= 1 | |
| if not (byte & 0x10): | |
| bits |= 1 | |
| checksum = ((bits >> 8) + (bits >> 16) + (bits >> 24) + (bits >> 32)) & 0xff | |
| if checksum == bits & 0xff: | |
| humid = ((bits >> 24) & 0xffff) / 10 | |
| temp = ((bits >> 8) & 0xffff) / 10 | |
| print(f"{temp}°C | {humid}%") | |
| time.sleep(2) |
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