5213 problems...debugging and printf

airswit — Wed, 09 Aug 2006 09:58:28 GMT

Hi everyone,

I am working on my senior project, and have asked this of the tech support at freescale...they told me to re-write everything from scratch..and read all of the technical data sheets for codewarrior. my problems are that I can no longer debug this project over the BDM cable, in sram. I try using the 'console debug' target, but when i try to run the debugger, i get a bus error when it tries to call uart_init(). Also, i cannot use the printf function (it just doesn't do anything...skips over it?), and i know that it does in some of the files i have downloaded from freescale (this is for the M5213EVB, with some peripherals added on). i doubt i will get help here, because I have asked this question before, but i'll give it a shot. I have attached my project files, and hope to hear back from someone soon!

Re: 5213 problems...debugging and printf

DrSeuss — Mon, 21 Aug 2006 22:38:38 GMT

You should let the initialization of ram and vectors complete befor using them:

void
mcf5213_init(void)
{
/********************************************************************/
/* RAMBAR & FLASHBAR already initialized in asm_startmeup */
/********************************************************************/
extern char __DATA_ROM[];
extern char __DATA_RAM[];
extern char __DATA_END[];
extern char __BSS_START[];
extern char __BSS_END[];
extern uint32 VECTOR_TABLE[];
extern uint32 __VECTOR_RAM[];
register uint32 n;
register uint8 *dp, *sp;

/* Copy the vector table to RAM */
if (__VECTOR_RAM != VECTOR_TABLE)
{
  for (n = 0; n < 256; n++)
   __VECTOR_RAM[n] = VECTOR_TABLE[n];
}
    mcf5xxx_wr_vbr((uint32)__VECTOR_RAM);

/*
* Move initialized data from ROM to RAM.
*/
if (__DATA_ROM != __DATA_RAM)
{
  dp = (uint8 *)__DATA_RAM;
  sp = (uint8 *)__DATA_ROM;
  n = __DATA_END - __DATA_RAM;
  while (n--)
   *dp++ = *sp++;
}

/*
* Zero uninitialized data
*/
if (__BSS_START != __BSS_END)
{
  sp = (uint8 *)__BSS_START;
  n = __BSS_END - __BSS_START;
  while (n--)
   *sp++ = 0;
}
mcf5213_wtm_init();
mcf5213_pll_init();
mcf5213_uart_init();
mcf5213_allow_interrupts();

}

ColdFire/68K Microcontrollers and Processorsのトピック5213 problems...debugging and printf

5213 problems...debugging and printf

Re: 5213 problems...debugging and printf