# Four Letter pHat - Any C Examples?

**URL:** https://forums.pimoroni.com/t/four-letter-phat-any-c-examples/6892
**Category:** Support
**Created:** [January 9, 2018, 3:20pm UTC](https://forums.pimoroni.com/t/four-letter-phat-any-c-examples/6892 "2018-01-09T15:20:52Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![PhilG1300](https://avatars.discourse-cdn.com/v4/letter/p/7ea924/32.png) [@PhilG1300](https://forums.pimoroni.com/u/PhilG1300)
#### Post date: [January 9, 2018, 3:20pm UTC](https://forums.pimoroni.com/t/four-letter-phat-any-c-examples/6892/1 "2018-01-09T15:20:52Z")

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Hi,  
I’ve just got a Four Letter pHat running on a Pi Zero WiFi. It’s a great product.  
I am wondering if there are any examples of controlling the Four Letter pHat using ‘C’ as I do not usually write code in Python, use to writing in ‘C’ on for the Pi?  
Look forward to getting comments.  
Regards  
Phil

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### Author: ![gadgetoid](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/gadgetoid/32/13_2.png) [@gadgetoid](https://forums.pimoroni.com/u/gadgetoid)
#### Post date: [January 9, 2018, 10:26pm UTC](https://forums.pimoroni.com/t/four-letter-phat-any-c-examples/6892/2 "2018-01-09T22:26:34Z")

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Not that we’ve written, but Four Letter pHAT is driven by an HT16K33, which there should absolutely be a C driver for somewhere.

Looks like there’s even an upstream Linux module for it, though I don’t know how useful it’d be: [https://github.com/torvalds/linux/blob/master/drivers/auxdisplay/ht16k33.c](https://github.com/torvalds/linux/blob/master/drivers/auxdisplay/ht16k33.c)
