# QSPI setup issues

**URL:** <https://forums.pimoroni.com/t/qspi-setup-issues/12559>\
**Category:** Beta Testers\
**Created:** [December 29, 2019, 7:47am UTC](https://forums.pimoroni.com/t/qspi-setup-issues/12559 "2019-12-29T07:47:56Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![AndyCap](https://avatars.discourse-cdn.com/v4/letter/a/e0b2c6/32.png) [@AndyCap](https://forums.pimoroni.com/u/AndyCap)\
**Post date:** [December 29, 2019, 7:47am UTC](https://forums.pimoroni.com/t/qspi-setup-issues/12559/1 "2019-12-29T07:47:56Z")

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Hi Guys,

A couple of issues with MX\_QUADSPI\_Init()

First the ClockPrescaler is a bit high, works fine with 5 here.

Secondly the FlashSize is wrong, QSPI\_FLASH\_SIZE should be POSITION\_VAL(0x2000000)-1;