LPC11E68 QEI Emulation Using SCTimer

mikenn — Tue, 25 Jan 2022 00:41:01 GMT

Hello.

I need a QEI peripheral to realize an accurate 32 bit count from a quadrature encoder but my processor LPC11E68 does not have a QEI peripheral. Is this possible with the SCTimer, and if so, how?

Re: LPC11E68 QEI Emulation Using SCTimer

Alice_Yang — Tue, 25 Jan 2022 08:29:01 GMT

Hello mik enn,

I think yes, you can add logical XOR gate , together with SCTIMER to make a quadrature encoder.

There is an application using PLU and SCTIEMR , you can have a look at the theory, replace PLU with XOR gate.

Sorry it is in Chinese, no English version, try translate it into English.

https://www.nxpic.org.cn/module/forum/thread-622747-1-1.html

Alice

topic Re: LPC11E68 QEI Emulation Using SCTimer in LPC Microcontrollers

LPC11E68 QEI Emulation Using SCTimer

Re: LPC11E68 QEI Emulation Using SCTimer