topic Re: Issue - MPC5748G Serial Bootloader Green Hill Project convert to S32 Design Studio Project in MPC5xxx

Issue - MPC5748G Serial Bootloader Green Hill Project convert to S32 Design Studio Project

K_W_SEO — Tue, 21 Feb 2023 10:50:23 GMT

Hi, I'm not good at English, so please consider it.

I have a problem occurred while converting the Green Hills Serial Bootloader example project to the S32 Design Studio project.

Putchar(), a function that transmits serial data in the Green Hills Bootloader source code, was changed by applying the LINFLEXD driver.

But when I check the data transmitted using the serial terminal program, there is a problem.

The original source code is as follows.

/* display menu */
OutStr("\r\n1.) Erase Flash\r\n");
OutStr("2.) Program Flash\r\n");
OutStr("3.) Execute Application\r\n");
OutStr("Please choose 1 to 3: ");

However, the terminal program is output as follows.

No output since "Pleas"

When checked with the Trace32 debugger, it is stuck on the while(TxBAvail == 0) line of the Putchar() function.

The bigger problem is that if I put a breakpoint on the line (TxBAvail == 0), and run the program step by step, it will output correctly to the terminal program as shown below.

I would appreciate it if you could tell me how to modify the putchar() function to work properly.

I will attach my project file.

Thanks:)

Re: Issue - MPC5748G Serial Bootloader Green Hill Project convert to S32 Design Studio Project

lukaszadrapa — Wed, 22 Feb 2023 12:20:28 GMT

Hi @K_W_SEO

I will answer this in different way - is there a reason to add SDK to this project? I can't see any. It should be quite straightforward to migrate the project from GHS to S32DS - *.c and *.h files will be the same, you just need to update the linker file and startup file in case you want to jump to application right after reset.

Regards,

Lukas

Re: Issue - MPC5748G Serial Bootloader Green Hill Project convert to S32 Design Studio Project

K_W_SEO — Thu, 23 Feb 2023 00:20:54 GMT

Thank you for your reply.

I'll ask you a further question.

GHS project is not compiled on S32DS, is there any other way?

Re: Issue - MPC5748G Serial Bootloader Green Hill Project convert to S32 Design Studio Project

lukaszadrapa — Thu, 23 Feb 2023 08:51:46 GMT

No, GHS project can't be compiled in S32DS. It is possible to install GHS plugin to S32DS but this plugin can compile only S32DS projects.

As I mentioned, I think that easiest option is to simply migrate the source files to new project in S32DS (without SDK, of course) and update linker+startup file.

Regards,

Lukas