Firmware migration from LPC11U14 to LPC11U24: is it direct?

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Firmware migration from LPC11U14 to LPC11U24: is it direct?

1,234 Views
juliodemelo
Contributor II

Hello,

I have a design that uses an LPC11U14, and I intend to migrate it to LPC11U24. Is there anything that I need to change  or can I just migrate it directly?

I changed the processor under settings, but the program did not work, even though it compiled OK. I am using LPCXpresso 8.1.4.

Any hints on this migration? Any docs on this subject?

Thanks,
Julio

4 Replies

970 Views
Carlos_Mendoza
NXP Employee
NXP Employee

Hi Julio,

There should not be a major difference, LPC11U24 and LPC11U14 use the same user manual, the LPC11U24 just has a larger SRAM and the eeprom, all the other peripherals are the same. LPC11U24 is backward-compatible with LPC11U14 so the LPC11U14 projects should work on the LPC11U24.

Could you try flashing one of the LPC11U14 LPCOpen demo projects to the LPC11U24?

LPCOpen Software for LPC11XX|NXP


Hope it helps!

Best Regards,
Carlos Mendoza
Technical Support Engineer

0 Kudos

970 Views
juliodemelo
Contributor II

Hi Carlos,

Thanks for the hints. One big difference I will have in migrating from U14 to U24 is that I intend to use the USB ROM system calls, instead of the regular USB procedure calls.

Reasoning like you suggested, I can imagine that if I keep using the same system calls, there should not be any problems, right? Do you think initialization might make any difference? Descriptors?

I will go ahead and try flashing two USB projects on the U24, one based on the U14 and one based on the U24, just to see if they behave the same way. If so, I'll compare the source code for some of the files to search for differences.

Thanks again,

Julio

0 Kudos

970 Views
Carlos_Mendoza
NXP Employee
NXP Employee

Hi Julio,

 

Please notice that the USB on-chip drivers are available on parts LPC11U2x and LPC11U3x only.


Hope it helps!

 

Best Regards,
Carlos Mendoza
Technical Support Engineer

0 Kudos

970 Views
juliodemelo
Contributor II

Hi Carlos,

Thanks for the hint. I was already aware of it, and that is actually the

reason we want to migrate, besides the U24 having the DFU capability.

I've already started the migration, and it is going well. In case I hit a

wall, I'll get back to you.

Thanks,

Julio

2017-09-29 13:56 GMT-03:00 Carlos_Mendoza <admin@community.nxp.com>:

NXP Community

<https://community.freescale.com/resources/statics/1000/35400-NXP-Community-Email-banner-600x75.jpg>

Re: Firmware migration from LPC11U14 to LPC11U24: is it direct?

reply from Carlos_Mendoza

<https://community.nxp.com/people/Carlos_Mendoza?et=watches.email.thread>

in MCUXpresso Software and Tools - View the full discussion

<https://community.nxp.com/message/948296?commentID=948296&et=watches.email.thread#comment-948296>