pxt-calliope/docs/device/error-codes.md

# 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.

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

```sim
basic.showLeds(`
    # . . . #
    # # . # #
    . . . . .
    . # # # .
    # . . . #
    `)
```

### See also

[Run scripts on your micro:bit](/device/usb)
Migrate docs from the other repo 2016-03-26 00:47:20 +01:00			`# 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.`

			`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

cleaning out old images 2016-08-18 16:23:26 +02:00			```sim
			basic.showLeds(`
			`# . . . #`
			`# # . # #`
			`. . . . .`
			`. # # # .`
			`# . . . #`
			`)
			```
Migrate docs from the other repo 2016-03-26 00:47:20 +01:00
			`### See also`

batch fixing ](/microbit/ -> ](/ links 2016-04-13 17:27:45 +02:00			`[Run scripts on your micro:bit](/device/usb)`
Migrate docs from the other repo 2016-03-26 00:47:20 +01:00