LPC MicrocontrollersのトピックRe: Lpc1788 & SDRAM

Lpc1788 & SDRAM

TahmidToky — Mon, 05 Oct 2020 18:34:25 GMT

Hello everyone I have one lpc1788 evolution board. There is already an SDRAM connected on the board. I want to learn how can I write data to SDRAM and read when needed. I am a beginner so any doc or link which I can visit to begin with would be appreciated. Thanks in advance.

Re: Lpc1788 & SDRAM

frank_m — Tue, 06 Oct 2020 07:48:54 GMT

SDK examples for your eval board ?

Worked for me, with a LPC54xxx board.

Re: Lpc1788 & SDRAM

TahmidToky — Tue, 06 Oct 2020 14:59:02 GMT

Thanks for your reply. There is no SDK available for LPC1788 Evolution Board. Can you suggest me any other way that i can use to learn?

Re: Lpc1788 & SDRAM

frank_m — Tue, 06 Oct 2020 15:08:46 GMT

An EMC example in a SDK for the LPC1788 perhaps ?

Or a SDK for a similar board ?

As an embedded SW developer, you cannot always rely on ready-made examples. In the worst case, on the basis of the datasheets.

Re: Lpc1788 & SDRAM

TahmidToky — Tue, 06 Oct 2020 15:19:26 GMT

There is no EMC examples as well. all I could find, is zipped in the attached file. You can have a look. Thanks again for you help.

Re: Lpc1788 & SDRAM

frank_m — Wed, 07 Oct 2020 12:48:44 GMT

You can create a SDK for your MCU online on the NXP website, and download it. With plenty of options to include middleware components like communication protocols, or graphics. Have you tried that ?

Select you MCU on the NXP product page, and go to the Design Resources / Embedded Software page:

I don't really know the LPC1788.

Re: Lpc1788 & SDRAM

frank_m — Wed, 07 Oct 2020 13:10:39 GMT

Trying to check that myself, I couldn't find my way through. Not sure if the LPC17xx is supported by the SDK generation tool (https://mcuxpresso.nxp.com/en/welcome).

Perhaps the NXP staff can chime in.

Re: Lpc1788 & SDRAM

Alexis_A — Wed, 07 Oct 2020 16:33:09 GMT

Hello @frank_m,

This MCU is not supported in the SDK, this has a library called LPCOpen where you can find examples for most of the peripherals (link), there's an example code called periph_memtest that use an external DRAM that you could take a look.

Best Regards,

Alexis Andalon

Re: Lpc1788 & SDRAM

TahmidToky — Wed, 07 Oct 2020 18:26:51 GMT

great. Thanks a lot. Let me see. Thanks again.

Re: Lpc1788 & SDRAM

TahmidToky — Wed, 07 Oct 2020 18:28:48 GMT

yes i know. No problem at all. let me see. Hope i can figure it out some how. Thanks for you time & research.