36 lines
996 B
Python
36 lines
996 B
Python
import time
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import adafruit_sdcard
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import board
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import busio
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import digitalio
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import microcontroller
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import storage
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# Use any pin that is not taken by SPI
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SD_CS = board.D0
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led = digitalio.DigitalInOut(board.D13)
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led.direction = digitalio.Direction.OUTPUT
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# Connect to the card and mount the filesystem.
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spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
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cs = digitalio.DigitalInOut(SD_CS)
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sdcard = adafruit_sdcard.SDCard(spi, cs)
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vfs = storage.VfsFat(sdcard)
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storage.mount(vfs, "/sd")
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# Use the filesystem as normal! Our files are under /sd
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print("Logging temperature to filesystem")
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# append to the file!
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while True:
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# open file for append
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with open("/sd/temperature.txt", "a") as f:
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led.value = True # turn on LED to indicate we're writing to the file
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t = microcontroller.cpu.temperature
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print("Temperature = %0.1f" % t)
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f.write("%0.1f\n" % t)
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led.value = False # turn off LED to indicate we're done
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# file is saved
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time.sleep(1)
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