LPC MicrocontrollersのトピックRe: Keil uVision 5 Optimization Level 3 for LPCOpen Library

Keil uVision 5 Optimization Level 3 for LPCOpen Library

lpestanas — Fri, 13 Sep 2024 02:51:29 GMT

Hi LPC Community,

I am porting the New LPCOpen Library 18xx->43xx for Keil uVision.

I am using the LPC4330FBD144 as my device and will be coded on Keil uVision.

My code works fine on Optimization 0 and 1 with no warnings and build errors.

But when I tried Optimization 2-3, the program would hang up with no changes in the code.

Is the new LPCOpen DFP 3.02 tested with Optimization Level 3 on Keil uVision?

I already read the Application Note 202, 298 for MDK ARM compiler optimization and it is quite tedious to check for "volatile" on variables, applying __attribute__((used)) on functions to be skipped and we are not allowed to use #pragma on actual program deployment of the firmware to isolate the hanging part. Please advise if someone tested it with Optimization Level 3 and they succeeded with no hangup or faults.

Thanks and Good Day,

Leo Pestañas

Re: Keil uVision 5 Optimization Level 3 for LPCOpen Library

ZhangJennie — Fri, 13 Sep 2024 10:06:19 GMT

Hi lpestanas

LPCOpen is developed and only tested with default compiler optimization setting.

Anyway if anyone ever tested with other level of optimization, welcome input.

Jun Zhang

Re: Keil uVision 5 Optimization Level 3 for LPCOpen Library

lpestanas — Tue, 24 Sep 2024 01:46:59 GMT

Hi Zhang,
Thanks for the response.
This will mean that I should also consider migrating the library to Optimization Level 3.

Best Regards,
Leo

Re: Keil uVision 5 Optimization Level 3 for LPCOpen Library

ZhangJennie — Wed, 25 Sep 2024 07:57:29 GMT

yes. correct.

Re: Keil uVision 5 Optimization Level 3 for LPCOpen Library

lpestanas — Thu, 26 Sep 2024 08:28:30 GMT

Hi Zhang,

Given that LPCOpen is an open-source,

a. did NXP released a driver that was tested across Optimizations (let us say Optimization level 0. 1. 2 and 3)?

b. Is the user of LPCOpen allowed to alter the contents to make it Optimization Level 3 without any software licensing implications regardless of purpose whether it will be a commercial or personal use only?

Best Regards,
Leo

Re: Keil uVision 5 Optimization Level 3 for LPCOpen Library

ZhangJennie — Fri, 27 Sep 2024 06:28:28 GMT

HI lpestanas,

We don't have driver tested across Optimizations.

LPCOpen copyright is anounced as below which should answer your question. You can also find this file under LPCOpen install folder.

Thanks,

Jun Zhang