SPC58nh-disp - I get a build error when I run the example

[SHan.4]

Hi, My discovery board is SPC58NH-DISP and I'm a beginner

I want to run the RTOS exampe.

so I tried running the example sequnce.

like picture....

umm..

I am getting a build error.

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./components/spc5_freertos_tcpip_component_rla/lib/src/FreeRTOS_IP.c:1782:32: warning: comparison of promoted ~unsigned with unsigned [-Wsign-compare]

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How can I solve this?

[ODOUV.1]

Hello,

this is not an error but a compilor warning

if( pxICMPHeader->usChecksum >= FreeRTOS_htons( 0xFFFFu - usRequest ) )

in this line, 0xFFFFu is a 32 bits unsigned value 65535

usRequest is a 16 bit unsigned value

usChecksum is a 16 bit unsigned value

compiler suppose that u32 - u16 can be a negative value

macro FreeRTOS_htons is casting this supposed negative value into an u16

the comparison (<=) between a u16 and casted negative value can be an issue

this is the reason of the warning

BUT usRequest value is between 0 and 65535

so 0xFFFFu - usRequest will remain between 65535 and 0

so it cannot be negative, so there is no issue

Best regards.

[ODOUV.1]

you could try this:

/**

* Fix warning: comparison of promoted ~unsigned with unsigned

*

* with uint16_t format:

* 0xFFFFu - usRequest == ~usRequest

*

*/

uint16_t temp = ~usRequest;

if( pxICMPHeader->usChecksum >= temp )