USB device code for LPC15xx on Keil MDK4

lpcware — Wed, 15 Jun 2016 17:11:19 GMT

Content originally posted in LPCWare by aykutkes on Mon Jul 21 02:42:49 MST 2014
Hello,

I can't find any sample project about using USB for LPC15xx on keil MDK4. I've been try to complie sample project written for lpcespresso ( usbd_rom_hid_generic) on my MDK4 but it does'nt work.

Anybody can help me?

There is a start code running after reset and there is some definitons coming from Linker. And i couldn't find equvilants on MDK4.

The definitions are;

extern unsigned int __data_section_table;
extern unsigned int __data_section_table_end;
extern unsigned int __bss_section_table;
extern unsigned int __bss_section_table_end;

The code is;

//*****************************************************************************
// Functions to carry out the initialization of RW and BSS data sections. These
// are written as separate functions rather than being inlined within the
// ResetISR() function in order to cope with MCUs with multiple banks of
// memory.
//*****************************************************************************
__attribute__ ((section(".after_vectors")))
void data_init(unsigned int romstart, unsigned int start, unsigned int len) {
    unsigned int *pulDest = (unsigned int*) start;
    unsigned int *pulsrc=(unsigned int*) romstart;
    unsigned int loop;
    for (loop = 0; loop < len; loop = loop + 4)
        *pulDest++ = *pulSrc++;
}

__attribute__ ((section(".after_vectors")))
void bss_init(unsigned int start, unsigned int len) {
    unsigned int *pulDest = (unsigned int*) start;
    unsigned int loop;
    for (loop = 0; loop < len; loop = loop + 4)
        *pulDest++ = 0;
}

//*****************************************************************************
// The following symbols are constructs generated by the linker, indicating
// the location of various points in the "Global Section Table". This table is
// created by the linker via the Code Red managed linker script mechanism. It
// contains the load address, execution address and length of each RW data
// section and the execution and length of each BSS (zero initialized) section.
//*****************************************************************************
extern unsigned int __data_section_table;
extern unsigned int __data_section_table_end;
extern unsigned int __bss_section_table;
extern unsigned int __bss_section_table_end;


//*****************************************************************************
// Reset entry point for your code.
// Sets up a simple runtime environment and initializes the C/C++
// library.
//*****************************************************************************
__attribute__ ((section(".after_vectors")))
void
ResetISR(void) {

    //
    // Copy the data sections from flash to SRAM.
    //
    unsigned int LoadAddr, ExeAddr, SectionLen;
    unsigned int *SectionTableAddr;

    // Load base address of Global Section Table
    SectionTableAddr = &__data_section_table;

    // Copy the data sections from flash to SRAM.
    while (SectionTableAddr < &__data_section_table_end) {
        LoadAddr = *SectionTableAddr++;
        ExeAddr = *SectionTableAddr++;
        SectionLen = *SectionTableAddr++;
        data_init(LoadAddr, ExeAddr, SectionLen);
    }
    // At this point, SectionTableAddr = &__bss_section_table;
    // Zero fill the bss segment
    while (SectionTableAddr < &__bss_section_table_end) {
        ExeAddr = *SectionTableAddr++;
        SectionLen = *SectionTableAddr++;
        bss_init(ExeAddr, SectionLen);
    }
#if defined (__USE_CMSIS) || defined (__USE_LPCOPEN)
    SystemInit();
#endif

#if defined (__cplusplus)
    //
    // Call C++ library initialisation
    //
    __libc_init_array();
#endif

#if defined (__REDLIB__)
    // Call the Redlib library, which in turn calls main()
    __main() ;
#else
    main();
#endif

    //
    // main() shouldn't return, but if it does, we'll just enter an infinite loop
    //
    while (1) {
        ;
    }
}

I've found similiar code for MDK4 on internet. Looks like doing same job. But not work properly;

extern unsigned int Load$$RW_IRAM1$$Base;
extern unsigned int Image$$RW_IRAM1$$RW$$Base;
extern unsigned int Image$$RW_IRAM1$$RW$$Length;
extern unsigned int Image$$RW_IRAM1$$ZI$$Base;
extern unsigned int Image$$RW_IRAM1$$ZI$$Length;

void  Prepare_Zero( unsigned int  * dst, unsigned int  len )
{
    while(len)
    {
        *dst++ = 0;

        len -= 4;
    }
}

void Prepare_Copy( unsigned int  * src, unsigned int  * dst, unsigned int  len )
{
    if(dst != src)
    {
        while(len)
        {
            *dst++ = *src++;

            len -= 4;
        }
    }
}

Prepare_Copy((unsigned int *)&Load$$RW_IRAM1$$Base,(unsigned int *)&Image$$RW_IRAM1$$RW$$Base,(unsigned int)&Image$$RW_IRAM1$$RW$$Length);
Prepare_Zero((unsigned int *)&Image$$RW_IRAM1$$ZI$$Base,(unsigned int)&Image$$RW_IRAM1$$ZI$$Length);

Can I find an USB HID code running on LPC15xx for MDK4 or a way to transfer lpcexpresso project to MDK4 ??

Thanks to everybody...

topic USB device code for LPC15xx on Keil MDK4 in LPC Microcontrollers

USB device code for LPC15xx on Keil MDK4