24 lines
573 B
Markdown
24 lines
573 B
Markdown
# Error codes
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Your micro:bit may encounter a situation that prevents it from running your code. When this happens, a frowny face will appear on your micro:bit screen (see picture) followed by an error number.
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Below is a list of error numbers and what they mean:
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* **10** (`MICROBIT_I2C_LOCKUP`): the micro:bit's I2C bus is not working
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* **20** (`MICROBIT_OOM`): there is no free memory on the micro:bit
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```sim
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basic.showLeds(`
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# . . . #
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# # . # #
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. . . . .
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. # # # .
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# . . . #
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`)
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```
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### See also
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[Run scripts on your micro:bit](/device/usb)
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