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Document additional panic codes.

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ganicke
2017-08-30 16:53:58 -07:00
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docs/device/error-codes.md
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# Error codes
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.
Your @boardname@ may encounter a situation that prevents it from running your code. When this happens, a frowny face will appear on your @boardname@ screen (see picture) followed by an error number. These are called _panic_ codes.
Below is a list of error numbers and what they mean:
* **10** (`MICROBIT_I2C_LOCKUP`): the micro:bit's I2C bus is not working
* **20** (`MICROBIT_OOM`): there is no free memory on the micro:bit
* **10** (`MICROBIT_I2C_LOCKUP`): the @boardname@'s I2C bus is not working
* **20** (`MICROBIT_OOM`): there is no free memory on the @boardname@
* **30** (`MICORBIT_HEAP_ERROR`): a problem in the heap space.
* **40** (`MICROBIT_NULL_DEREFERENCE `): there was a NULL dereference, the @boardname@ tried to manage a invalid object pointer.
* **42** (`MICROBIT_SYSTEM_ERROR`): there's an error condition in the @boardname@ system software.
* **43** (`MICROBIT_NO_RADIO`): the @boardname@ can't enable the radio.
* **98** (`MICROBIT_ASSERTION_FAILED`): assertion failed, the condition in an [assert](/reference/control/assert) was false.
```sim
basic.showLeds(`
@ -19,5 +24,4 @@ basic.showLeds(`
### See also
[Run scripts on your micro:bit](/device/usb)
[panic](/reference/control/panic), [assert](/reference/control/assert),